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[catacomb-python] / algorithms.c
CommitLineData
d7ab1bab 1/* -*-c-*-
2 *
d7ab1bab 3 * Symmetric cryptography
4 *
5 * (c) 2004 Straylight/Edgeware
6 */
7
b2687a0a 8/*----- Licensing notice --------------------------------------------------*
d7ab1bab 9 *
10 * This file is part of the Python interface to Catacomb.
11 *
12 * Catacomb/Python is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
b2687a0a 16 *
d7ab1bab 17 * Catacomb/Python is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
b2687a0a 21 *
d7ab1bab 22 * You should have received a copy of the GNU General Public License
23 * along with Catacomb/Python; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 */
26
27/*----- Header files ------------------------------------------------------*/
28
29#include "catacomb-python.h"
6640e060 30PUBLIC_SYMBOLS;
d7ab1bab 31#include "algorithms.h"
6640e060 32PRIVATE_SYMBOLS;
d7ab1bab 33
34/*----- Key sizes ---------------------------------------------------------*/
35
c6e89d48
MW		 36static PyTypeObject *keysz_pytype;
37static PyTypeObject *keyszany_pytype, *keyszrange_pytype, *keyszset_pytype;
38
39typedef struct keysz_pyobj {
40 PyObject_HEAD
41 int dfl;
42} keysz_pyobj;
43
44typedef struct keyszrange_pyobj {
45 PyObject_HEAD
46 int dfl;
47 int min, max, mod;
48} keyszrange_pyobj;
49
50typedef struct keyszset_pyobj {
51 PyObject_HEAD
52 int dfl;
53 PyObject *set;
54} keyszset_pyobj;
55
56#define KEYSZ_PYCHECK(o) PyObject_TypeCheck((o), keysz_pytype)
d7ab1bab 57
cfe23cf8
MW		 58#ifndef KSZ_OPMASK
59# define KSZ_OPMASK 0x1f
60#endif
61
62#ifndef KSZ_16BIT
63# define KSZ_16BIT 0x20
64#endif
65
d7ab1bab 66PyObject *keysz_pywrap(const octet *k)
67{
cfe23cf8
MW		 68 unsigned op = *k++;
69#define ARG(i) (op&KSZ_16BIT ? LOAD16(k + 2*(i)) : k[i])
70 switch (op&KSZ_OPMASK) {
d7ab1bab 71 case KSZ_ANY: {
72 keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype);
cfe23cf8 73 o->dfl = ARG(0);
d7ab1bab 74 return ((PyObject *)o);
75 } break;
76 case KSZ_RANGE: {
77 keyszrange_pyobj *o =
b2687a0a 78 PyObject_New(keyszrange_pyobj, keyszrange_pytype);
cfe23cf8
MW		 79 o->dfl = ARG(0);
80 o->min = ARG(1);
81 o->max = ARG(2);
82 o->mod = ARG(3);
d7ab1bab 83 if (!o->mod) o->mod = 1;
84 return ((PyObject *)o);
85 } break;
86 case KSZ_SET: {
87 keyszset_pyobj *o =
b2687a0a 88 PyObject_New(keyszset_pyobj, keyszset_pytype);
fd46a88d 89 PyObject *l;
d7ab1bab 90 int i, n;
cfe23cf8
MW		 91 o->dfl = ARG(0);
92 for (i = 0; ARG(i); i++) ;
fd46a88d
MW		 93 n = i; l = PyList_New(n);
94 for (i = 0; i < n; i++) PyList_SET_ITEM(l, i, PyInt_FromLong(ARG(i)));
95 o->set = PyFrozenSet_New(l); Py_DECREF(l);
d7ab1bab 96 return ((PyObject *)o);
97 } break;
98 default:
99 abort();
100 }
cfe23cf8 101#undef ARG
d7ab1bab 102}
103
104static PyObject *keyszany_pynew(PyTypeObject *ty,
105 PyObject *arg, PyObject *kw)
106{
827f89d7 107 static const char *const kwlist[] = { "default", 0 };
d7ab1bab 108 int dfl;
109 keysz_pyobj *o;
110
827f89d7 111 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", KWLIST, &dfl))
d7ab1bab 112 goto end;
113 if (dfl < 0) VALERR("key size cannot be negative");
114 o = (keysz_pyobj *)ty->tp_alloc(ty, 0);
115 o->dfl = dfl;
116 return ((PyObject *)o);
117end:
118 return (0);
119}
120
121static PyObject *keyszrange_pynew(PyTypeObject *ty,
122 PyObject *arg, PyObject *kw)
123{
827f89d7 124 static const char *const kwlist[] = { "default", "min", "max", "mod", 0 };
a9410db7
MW		 125 int dfl, min = 0, max, mod = 1;
126 PyObject *maxobj = Py_None;
d7ab1bab 127 keyszrange_pyobj *o;
128
a9410db7
MW		 129 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iOi:new", KWLIST,
130 &dfl, &min, &maxobj, &mod))
d7ab1bab 131 goto end;
a9410db7
MW		 132 if (maxobj == Py_None)
133 max = 0;
134 else {
135 max = PyInt_AsLong(maxobj);
136 if (max == -1 && PyErr_Occurred()) goto end;
137 }
138 if (dfl < 0 || min < 0 || max < 0) VALERR("key size cannot be negative");
838ab173
MW		 139 if (min > dfl || (max && dfl > max)) VALERR("bad key size bounds");
140 if (mod <= 0 || dfl%mod || min%mod || max%mod)
d7ab1bab 141 VALERR("bad key size modulus");
142 o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0);
143 o->dfl = dfl;
144 o->min = min;
145 o->max = max;
146 o->mod = mod;
147 return ((PyObject *)o);
148end:
149 return (0);
150}
151
152static PyObject *keyszset_pynew(PyTypeObject *ty,
153 PyObject *arg, PyObject *kw)
154{
827f89d7 155 static const char *const kwlist[] = { "default", "set", 0 };
fd46a88d 156 int dfl, xx;
d7ab1bab 157 PyObject *set = 0;
fd46a88d 158 PyObject *x = 0, *l = 0, *i = 0;
d7ab1bab 159 keyszset_pyobj *o = 0;
160
827f89d7 161 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", KWLIST, &dfl, &set))
d7ab1bab 162 goto end;
fd46a88d
MW		 163 if (set) i = PyObject_GetIter(set);
164 else { set = PyTuple_New(0); i = PyObject_GetIter(set); Py_DECREF(set); }
165 if (!i) goto end;
4281a7ee 166 l = PyList_New(0); if (!l) goto end;
d7ab1bab 167 if (dfl < 0) VALERR("key size cannot be negative");
fd46a88d
MW		 168 x = PyInt_FromLong(dfl); PyList_Append(l, x); Py_DECREF(x); x = 0;
169 for (;;) {
170 x = PyIter_Next(i); if (!x) break;
171 xx = PyInt_AsLong(x); if (xx == -1 && PyErr_Occurred()) goto end;
d7ab1bab 172 if (xx < 0) VALERR("key size cannot be negative");
fd46a88d 173 PyList_Append(l, x); Py_DECREF(x); x = 0;
d7ab1bab 174 }
fd46a88d 175 if ((set = PyFrozenSet_New(l)) == 0) goto end;
d7ab1bab 176 o = (keyszset_pyobj *)ty->tp_alloc(ty, 0);
177 o->dfl = dfl;
178 o->set = set;
d7ab1bab 179end:
d7ab1bab 180 Py_XDECREF(l);
181 Py_XDECREF(x);
182 return ((PyObject *)o);
183}
184
185static PyObject *kaget_min(PyObject *me, void *hunoz)
186 { return (PyInt_FromLong(0)); }
a9410db7
MW		 187static PyObject *kaget_max(PyObject *me, void *hunoz)
188 { RETURN_NONE; }
189
190static PyObject *krget_max(PyObject *me, void *hunoz)
191{
192 int max = ((keyszrange_pyobj *)me)->max;
193 if (max) return (PyInt_FromLong(max));
194 else RETURN_NONE;
195}
d7ab1bab 196
197static PyObject *ksget_min(PyObject *me, void *hunoz)
198{
fd46a88d
MW		 199 PyObject *i = PyObject_GetIter(((keyszset_pyobj *)me)->set);
200 PyObject *v = 0;
201 int y, x = -1;
202 for (;;) {
203 v = PyIter_Next(i); if (!v) break;
204 y = PyInt_AsLong(v); assert(y >= 0);
d7ab1bab 205 if (x == -1 || y < x) x = y;
206 }
fd46a88d
MW		 207 Py_DECREF(i); Py_XDECREF(v);
208 if (PyErr_Occurred()) return (0);
d7ab1bab 209 return (PyInt_FromLong(x));
210}
211
212static PyObject *ksget_max(PyObject *me, void *hunoz)
213{
fd46a88d
MW		 214 PyObject *i = PyObject_GetIter(((keyszset_pyobj *)me)->set);
215 PyObject *v = 0;
216 int y, x = -1;
217 for (;;) {
218 v = PyIter_Next(i); if (!v) break;
219 y = PyInt_AsLong(v); assert(y >= 0);
d7ab1bab 220 if (y > x) x = y;
221 }
fd46a88d
MW		 222 Py_DECREF(i); Py_XDECREF(v);
223 if (PyErr_Occurred()) return (0);
d7ab1bab 224 return (PyInt_FromLong(x));
225}
226
c90f712e 227static const PyMemberDef keysz_pymembers[] = {
d7ab1bab 228#define MEMBERSTRUCT keysz_pyobj
8dfb09a7 229 MEMRNM(default, T_INT, dfl, READONLY, "KSZ.default -> default key size")
d7ab1bab 230#undef MEMBERSTRUCT
231 { 0 }
232};
233
f281293c 234#define KSZCONVOP(op) \
a157093f 235 static PyObject *kszmeth_##op(PyObject *me, PyObject *arg) \
f281293c
MW		 236 { \
237 double x, y; \
a157093f 238 if (!PyArg_ParseTuple(arg, "d:" #op, &x)) return (0); \
f281293c
MW		 239 y = keysz_##op(x); \
240 return (PyFloat_FromDouble(y)); \
241 }
242KSZCONVOP(fromdl)
243KSZCONVOP(fromschnorr)
244KSZCONVOP(fromif)
245KSZCONVOP(fromec)
246KSZCONVOP(todl)
247KSZCONVOP(toschnorr)
248KSZCONVOP(toif)
249KSZCONVOP(toec)
250#undef KSZCONVOP
251
a157093f
MW		 252static const PyMethodDef keysz_pymethods[] = {
253#define METHNAME(name) kszmeth_##name
254 SMTH (fromdl, "fromdl(N) -> M: "
255 "convert integer discrete log field size to work factor")
256 SMTH (fromschnorr, "fromschnorr(N) -> M: "
257 "convert Schnorr group order to work factor")
258 SMTH (fromif, "fromif(N) -> M: "
259 "convert integer factorization problem size to work factor")
260 SMTH (fromec, "fromec(N) -> M: "
261 "convert elliptic curve group order to work factor")
262 SMTH (todl, "todl(N) -> M: "
263 "convert work factor to integer discrete log field size")
264 SMTH (toschnorr, "toschnorr(N) -> M: "
265 "convert work factor to Schnorr group order")
266 SMTH (toif, "toif(N) -> M: "
267 "convert work factor to integer factorization problem size")
268 SMTH (toec, "toec(N) -> M: "
269 "convert work factor to elliptic curve group order")
270 SMTH (toec, "toec(N) -> M: "
271 "convert work factor to elliptic curve group order")
272#undef METHNAME
273 { 0 }
274};
275
c90f712e 276static const PyGetSetDef keyszany_pygetset[] = {
d7ab1bab 277#define GETSETNAME(op, name) ka##op##_##name
d96c882e
MW		 278 GET (min, "KSZ.min -> smallest allowed key size")
279 GET (max, "KSZ.max -> largest allowed key size")
d7ab1bab 280#undef GETSETNAME
281 { 0 }
282};
283
c90f712e 284static const PyMemberDef keyszrange_pymembers[] = {
d7ab1bab 285#define MEMBERSTRUCT keyszrange_pyobj
d96c882e 286 MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size")
d96c882e
MW		 287 MEMBER(mod, T_INT, READONLY,
288 "KSZ.mod -> key size must be a multiple of this")
d7ab1bab 289#undef MEMBERSTRUCT
290 { 0 }
291};
292
a9410db7
MW		 293static const PyGetSetDef keyszrange_pygetset[] = {
294#define GETSETNAME(op, name) kr##op##_##name
295 GET (max, "KSZ.max -> largest allowed key size")
296#undef GETSETNAME
297 { 0 }
298};
299
c90f712e 300static const PyGetSetDef keyszset_pygetset[] = {
d7ab1bab 301#define GETSETNAME(op, name) ks##op##_##name
d96c882e
MW		 302 GET (min, "KSZ.min -> smallest allowed key size")
303 GET (max, "KSZ.max -> largest allowed key size")
d7ab1bab 304#undef GETSETNAME
305 { 0 }
306};
307
c90f712e 308static const PyMemberDef keyszset_pymembers[] = {
d7ab1bab 309#define MEMBERSTRUCT keyszset_pyobj
d96c882e 310 MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes")
d7ab1bab 311#undef MEMBERSTRUCT
312 { 0 }
313};
314
c263b05c 315static const PyTypeObject keysz_pytype_skel = {
591bf41b 316 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 317 "KeySZ", /* @tp_name@ */
d7ab1bab 318 sizeof(keysz_pyobj), /* @tp_basicsize@ */
319 0, /* @tp_itemsize@ */
320
3aa33042 321 0, /* @tp_dealloc@ */
d7ab1bab 322 0, /* @tp_print@ */
323 0, /* @tp_getattr@ */
324 0, /* @tp_setattr@ */
325 0, /* @tp_compare@ */
326 0, /* @tp_repr@ */
327 0, /* @tp_as_number@ */
328 0, /* @tp_as_sequence@ */
329 0, /* @tp_as_mapping@ */
330 0, /* @tp_hash@ */
331 0, /* @tp_call@ */
332 0, /* @tp_str@ */
333 0, /* @tp_getattro@ */
334 0, /* @tp_setattro@ */
335 0, /* @tp_as_buffer@ */
336 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
337 Py_TPFLAGS_BASETYPE,
338
339 /* @tp_doc@ */
d96c882e 340 "Key size constraints. Abstract.",
d7ab1bab 341
342 0, /* @tp_traverse@ */
343 0, /* @tp_clear@ */
344 0, /* @tp_richcompare@ */
345 0, /* @tp_weaklistoffset@ */
346 0, /* @tp_iter@ */
963a6148 347 0, /* @tp_iternext@ */
a157093f 348 PYMETHODS(keysz), /* @tp_methods@ */
c90f712e 349 PYMEMBERS(keysz), /* @tp_members@ */
d7ab1bab 350 0, /* @tp_getset@ */
351 0, /* @tp_base@ */
352 0, /* @tp_dict@ */
353 0, /* @tp_descr_get@ */
354 0, /* @tp_descr_set@ */
355 0, /* @tp_dictoffset@ */
356 0, /* @tp_init@ */
357 PyType_GenericAlloc, /* @tp_alloc@ */
358 abstract_pynew, /* @tp_new@ */
3aa33042 359 0, /* @tp_free@ */
d7ab1bab 360 0 /* @tp_is_gc@ */
361};
362
c263b05c 363static const PyTypeObject keyszany_pytype_skel = {
591bf41b 364 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 365 "KeySZAny", /* @tp_name@ */
d7ab1bab 366 sizeof(keysz_pyobj), /* @tp_basicsize@ */
367 0, /* @tp_itemsize@ */
368
3aa33042 369 0, /* @tp_dealloc@ */
d7ab1bab 370 0, /* @tp_print@ */
371 0, /* @tp_getattr@ */
372 0, /* @tp_setattr@ */
373 0, /* @tp_compare@ */
374 0, /* @tp_repr@ */
375 0, /* @tp_as_number@ */
376 0, /* @tp_as_sequence@ */
377 0, /* @tp_as_mapping@ */
378 0, /* @tp_hash@ */
379 0, /* @tp_call@ */
380 0, /* @tp_str@ */
381 0, /* @tp_getattro@ */
382 0, /* @tp_setattro@ */
383 0, /* @tp_as_buffer@ */
384 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
385 Py_TPFLAGS_BASETYPE,
386
387 /* @tp_doc@ */
d96c882e
MW		 388 "KeySZAny(DEFAULT)\n"
389 " Key size constraints. This object imposes no constraints on size.",
d7ab1bab 390
391 0, /* @tp_traverse@ */
392 0, /* @tp_clear@ */
393 0, /* @tp_richcompare@ */
394 0, /* @tp_weaklistoffset@ */
395 0, /* @tp_iter@ */
963a6148 396 0, /* @tp_iternext@ */
d7ab1bab 397 0, /* @tp_methods@ */
398 0, /* @tp_members@ */
c90f712e 399 PYGETSET(keyszany), /* @tp_getset@ */
d7ab1bab 400 0, /* @tp_base@ */
401 0, /* @tp_dict@ */
402 0, /* @tp_descr_get@ */
403 0, /* @tp_descr_set@ */
404 0, /* @tp_dictoffset@ */
405 0, /* @tp_init@ */
406 PyType_GenericAlloc, /* @tp_alloc@ */
407 keyszany_pynew, /* @tp_new@ */
3aa33042 408 0, /* @tp_free@ */
d7ab1bab 409 0 /* @tp_is_gc@ */
410};
411
c263b05c 412static const PyTypeObject keyszrange_pytype_skel = {
591bf41b 413 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 414 "KeySZRange", /* @tp_name@ */
d7ab1bab 415 sizeof(keyszrange_pyobj), /* @tp_basicsize@ */
416 0, /* @tp_itemsize@ */
417
3aa33042 418 0, /* @tp_dealloc@ */
d7ab1bab 419 0, /* @tp_print@ */
420 0, /* @tp_getattr@ */
421 0, /* @tp_setattr@ */
422 0, /* @tp_compare@ */
423 0, /* @tp_repr@ */
424 0, /* @tp_as_number@ */
425 0, /* @tp_as_sequence@ */
426 0, /* @tp_as_mapping@ */
427 0, /* @tp_hash@ */
428 0, /* @tp_call@ */
429 0, /* @tp_str@ */
430 0, /* @tp_getattro@ */
431 0, /* @tp_setattro@ */
432 0, /* @tp_as_buffer@ */
433 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
434 Py_TPFLAGS_BASETYPE,
435
436 /* @tp_doc@ */
d96c882e
MW		 437 "KeySZRange(DEFAULT, [min = 0], [max = 0], [mod = 1])\n"
438 " Key size constraints: size must be between MIN and MAX inclusive, and\n"
439 " be a multiple of MOD.",
d7ab1bab 440
441 0, /* @tp_traverse@ */
442 0, /* @tp_clear@ */
443 0, /* @tp_richcompare@ */
444 0, /* @tp_weaklistoffset@ */
445 0, /* @tp_iter@ */
963a6148 446 0, /* @tp_iternext@ */
d7ab1bab 447 0, /* @tp_methods@ */
c90f712e 448 PYMEMBERS(keyszrange), /* @tp_members@ */
a9410db7 449 PYGETSET(keyszrange), /* @tp_getset@ */
d7ab1bab 450 0, /* @tp_base@ */
451 0, /* @tp_dict@ */
452 0, /* @tp_descr_get@ */
453 0, /* @tp_descr_set@ */
454 0, /* @tp_dictoffset@ */
455 0, /* @tp_init@ */
456 PyType_GenericAlloc, /* @tp_alloc@ */
457 keyszrange_pynew, /* @tp_new@ */
3aa33042 458 0, /* @tp_free@ */
d7ab1bab 459 0 /* @tp_is_gc@ */
460};
461
c263b05c 462static const PyTypeObject keyszset_pytype_skel = {
591bf41b 463 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 464 "KeySZSet", /* @tp_name@ */
d7ab1bab 465 sizeof(keyszset_pyobj), /* @tp_basicsize@ */
466 0, /* @tp_itemsize@ */
467
3aa33042 468 0, /* @tp_dealloc@ */
d7ab1bab 469 0, /* @tp_print@ */
470 0, /* @tp_getattr@ */
471 0, /* @tp_setattr@ */
472 0, /* @tp_compare@ */
473 0, /* @tp_repr@ */
474 0, /* @tp_as_number@ */
475 0, /* @tp_as_sequence@ */
476 0, /* @tp_as_mapping@ */
477 0, /* @tp_hash@ */
478 0, /* @tp_call@ */
479 0, /* @tp_str@ */
480 0, /* @tp_getattro@ */
481 0, /* @tp_setattro@ */
482 0, /* @tp_as_buffer@ */
483 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
484 Py_TPFLAGS_BASETYPE,
485
486 /* @tp_doc@ */
fd46a88d
MW		 487 "KeySZSet(DEFAULT, ITER)\n"
488 " Key size constraints: size must be DEFAULT or an element of ITER.",
d7ab1bab 489
490 0, /* @tp_traverse@ */
491 0, /* @tp_clear@ */
492 0, /* @tp_richcompare@ */
493 0, /* @tp_weaklistoffset@ */
494 0, /* @tp_iter@ */
963a6148 495 0, /* @tp_iternext@ */
d7ab1bab 496 0, /* @tp_methods@ */
c90f712e
MW		 497 PYMEMBERS(keyszset), /* @tp_members@ */
498 PYGETSET(keyszset), /* @tp_getset@ */
d7ab1bab 499 0, /* @tp_base@ */
500 0, /* @tp_dict@ */
501 0, /* @tp_descr_get@ */
502 0, /* @tp_descr_set@ */
503 0, /* @tp_dictoffset@ */
504 0, /* @tp_init@ */
505 PyType_GenericAlloc, /* @tp_alloc@ */
506 keyszset_pynew, /* @tp_new@ */
3aa33042 507 0, /* @tp_free@ */
d7ab1bab 508 0 /* @tp_is_gc@ */
509};
510
511/*----- Symmetric encryption ----------------------------------------------*/
512
c6e89d48
MW		 513static PyTypeObject *gccipher_pytype, *gcipher_pytype;
514
515typedef struct gccipher_pyobj {
516 PyHeapTypeObject ty;
517 gccipher *cc;
518} gccipher_pyobj;
519
520#define GCCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gccipher_pytype)
521#define GCCIPHER_CC(o) (((gccipher_pyobj *)(o))->cc)
522
523typedef struct gcipher_pyobj {
524 PyObject_HEAD
525 gcipher *c;
526} gcipher_pyobj;
527
528#define GCIPHER_PYCHECK(o) PyObject_TypeCheck((o), gcipher_pytype)
529#define GCIPHER_C(o) (((gcipher_pyobj *)(o))->c)
d7ab1bab 530
531CONVFUNC(gccipher, gccipher *, GCCIPHER_CC)
d7ab1bab 532
c6e89d48 533static PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c)
d7ab1bab 534{
535 gcipher_pyobj *g;
536 if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c));
537 else Py_INCREF(cobj);
538 g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj);
539 g->c = c;
b2687a0a 540 return ((PyObject *)g);
d7ab1bab 541}
542
543static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
544{
827f89d7 545 static const char *const kwlist[] = { "k", 0 };
21684137
MW		 546 struct bin k = BIN_INIT;
547 PyObject *rc = 0;
d7ab1bab 548
67c75893 549 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
d7ab1bab 550 goto end;
67c75893 551 if (keysz(k.sz, GCCIPHER_CC(ty)->keysz) != k.sz) VALERR("bad key length");
21684137 552 rc = gcipher_pywrap((PyObject *)ty, GC_INIT(GCCIPHER_CC(ty), k.p, k.sz));
d7ab1bab 553end:
21684137
MW		 554 freebin(&k);
555 return (rc);
d7ab1bab 556}
557
558PyObject *gccipher_pywrap(gccipher *cc)
559{
df9f8366 560 gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name);
d7ab1bab 561 g->cc = cc;
24b3d57b
MW		 562 g->ty.ht_type.tp_basicsize = sizeof(gcipher_pyobj);
563 g->ty.ht_type.tp_base = gcipher_pytype;
d7ab1bab 564 Py_INCREF(gcipher_pytype);
24b3d57b
MW		 565 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
566 Py_TPFLAGS_BASETYPE |
567 Py_TPFLAGS_HEAPTYPE);
568 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
569 g->ty.ht_type.tp_free = 0;
570 g->ty.ht_type.tp_new = gcipher_pynew;
dc075750 571 typeready(&g->ty.ht_type);
d7ab1bab 572 return ((PyObject *)g);
573}
574
575static void gcipher_pydealloc(PyObject *me)
576{
c41d0371 577 GC_DESTROY(GCIPHER_C(me));
2a448f86 578 Py_DECREF(Py_TYPE(me));
3aa33042 579 FREEOBJ(me);
d7ab1bab 580}
581
582static PyObject *gccget_name(PyObject *me, void *hunoz)
2135a6d3 583 { return (TEXT_FROMSTR(GCCIPHER_CC(me)->name)); }
d7ab1bab 584
585static PyObject *gccget_keysz(PyObject *me, void *hunoz)
586 { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); }
587
588static PyObject *gccget_blksz(PyObject *me, void *hunoz)
589 { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); }
590
591static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg)
592{
21684137 593 struct bin m = BIN_INIT;
d7ab1bab 594 PyObject *rc = 0;
595
21684137 596 if (!PyArg_ParseTuple(arg, "O&:encrypt", convbin, &m)) goto end;
67c75893 597 rc = bytestring_pywrap(0, m.sz);
2135a6d3 598 GC_ENCRYPT(GCIPHER_C(me), m.p, BIN_PTR(rc), m.sz);
21684137
MW		 599end:
600 freebin(&m);
d7ab1bab 601 return (rc);
602}
603
604static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg)
605{
606 char *p;
607 int sz;
608 PyObject *rc = 0;
609
610 if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0);
611 rc = bytestring_pywrap(0, sz);
2135a6d3 612 p = BIN_PTR(rc);
d7ab1bab 613 memset(p, 0, sz);
614 GC_ENCRYPT(GCIPHER_C(me), p, p, sz);
615 return (rc);
616}
617
618static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg)
619{
21684137 620 struct bin c = BIN_INIT;
d7ab1bab 621 PyObject *rc = 0;
622
21684137 623 if (!PyArg_ParseTuple(arg, "O&:decrypt", convbin, &c)) goto end;
67c75893 624 rc = bytestring_pywrap(0, c.sz);
2135a6d3 625 GC_DECRYPT(GCIPHER_C(me), c.p, BIN_PTR(rc), c.sz);
21684137
MW		 626end:
627 freebin(&c);
d7ab1bab 628 return (rc);
629}
630
631static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg)
632{
633 char *p;
634 int sz;
635 PyObject *rc = 0;
636
637 if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0);
638 rc = bytestring_pywrap(0, sz);
2135a6d3 639 p = BIN_PTR(rc);
d7ab1bab 640 memset(p, 0, sz);
641 GC_DECRYPT(GCIPHER_C(me), p, p, sz);
642 return (rc);
643}
644
645static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg)
646{
21684137
MW		 647 struct bin iv = BIN_INIT;
648 PyObject *rc = 0;
d7ab1bab 649
67c75893 650 if (!PyArg_ParseTuple(arg, "O&:setiv", convbin, &iv)) goto end;
30eef666 651 if (!GCIPHER_C(me)->ops->setiv) VALERR("`setiv' not supported");
d7ab1bab 652 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
67c75893
MW		 653 if (iv.sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length");
654 GC_SETIV(GCIPHER_C(me), iv.p);
21684137 655 rc = me; Py_INCREF(rc);
d7ab1bab 656end:
21684137
MW		 657 freebin(&iv);
658 return (rc);
d7ab1bab 659}
660
91e56f06 661static PyObject *gcmeth_bdry(PyObject *me)
d7ab1bab 662{
30eef666 663 if (!GCIPHER_C(me)->ops->bdry) VALERR("`bdry' not supported");
d7ab1bab 664 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
665 GC_BDRY(GCIPHER_C(me));
666 RETURN_ME;
667end:
668 return (0);
669}
670
c90f712e 671static const PyGetSetDef gccipher_pygetset[] = {
d7ab1bab 672#define GETSETNAME(op, name) gcc##op##_##name
d96c882e
MW		 673 GET (keysz, "CC.keysz -> acceptable key sizes")
674 GET (blksz, "CC.blksz -> block size, or zero")
675 GET (name, "CC.name -> name of this kind of cipher")
d7ab1bab 676#undef GETSETNAME
677 { 0 }
678};
679
c90f712e 680static const PyMethodDef gcipher_pymethods[] = {
d7ab1bab 681#define METHNAME(name) gcmeth_##name
d96c882e
MW		 682 METH (encrypt, "C.encrypt(PT) -> CT")
683 METH (enczero, "C.enczero(N) -> CT")
684 METH (decrypt, "C.decrypt(CT) -> PT")
685 METH (deczero, "C.deczero(N) -> PT")
686 METH (setiv, "C.setiv(IV)")
91e56f06 687 NAMETH(bdry, "C.bdry()")
d7ab1bab 688#undef METHNAME
689 { 0 }
690};
691
c263b05c 692static const PyTypeObject gccipher_pytype_skel = {
591bf41b 693 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 694 "GCCipher", /* @tp_name@ */
d7ab1bab 695 sizeof(gccipher_pyobj), /* @tp_basicsize@ */
696 0, /* @tp_itemsize@ */
697
698 0, /* @tp_dealloc@ */
699 0, /* @tp_print@ */
700 0, /* @tp_getattr@ */
701 0, /* @tp_setattr@ */
702 0, /* @tp_compare@ */
703 0, /* @tp_repr@ */
704 0, /* @tp_as_number@ */
705 0, /* @tp_as_sequence@ */
706 0, /* @tp_as_mapping@ */
707 0, /* @tp_hash@ */
708 0, /* @tp_call@ */
709 0, /* @tp_str@ */
710 0, /* @tp_getattro@ */
711 0, /* @tp_setattro@ */
712 0, /* @tp_as_buffer@ */
713 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
714 Py_TPFLAGS_BASETYPE,
715
716 /* @tp_doc@ */
d96c882e 717 "Symmetric cipher metaclass.",
d7ab1bab 718
719 0, /* @tp_traverse@ */
720 0, /* @tp_clear@ */
721 0, /* @tp_richcompare@ */
722 0, /* @tp_weaklistoffset@ */
723 0, /* @tp_iter@ */
963a6148 724 0, /* @tp_iternext@ */
d7ab1bab 725 0, /* @tp_methods@ */
726 0, /* @tp_members@ */
c90f712e 727 PYGETSET(gccipher), /* @tp_getset@ */
d7ab1bab 728 0, /* @tp_base@ */
729 0, /* @tp_dict@ */
730 0, /* @tp_descr_get@ */
731 0, /* @tp_descr_set@ */
732 0, /* @tp_dictoffset@ */
733 0, /* @tp_init@ */
734 PyType_GenericAlloc, /* @tp_alloc@ */
735 abstract_pynew, /* @tp_new@ */
3aa33042 736 0, /* @tp_free@ */
d7ab1bab 737 0 /* @tp_is_gc@ */
738};
739
c263b05c 740static const PyTypeObject gcipher_pytype_skel = {
591bf41b 741 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 742 "GCipher", /* @tp_name@ */
d7ab1bab 743 sizeof(gcipher_pyobj), /* @tp_basicsize@ */
744 0, /* @tp_itemsize@ */
745
746 gcipher_pydealloc, /* @tp_dealloc@ */
747 0, /* @tp_print@ */
748 0, /* @tp_getattr@ */
749 0, /* @tp_setattr@ */
750 0, /* @tp_compare@ */
751 0, /* @tp_repr@ */
752 0, /* @tp_as_number@ */
753 0, /* @tp_as_sequence@ */
754 0, /* @tp_as_mapping@ */
755 0, /* @tp_hash@ */
756 0, /* @tp_call@ */
757 0, /* @tp_str@ */
758 0, /* @tp_getattro@ */
759 0, /* @tp_setattro@ */
760 0, /* @tp_as_buffer@ */
761 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
762 Py_TPFLAGS_BASETYPE,
763
764 /* @tp_doc@ */
d96c882e 765 "Symmetric cipher, abstract base class.",
d7ab1bab 766
767 0, /* @tp_traverse@ */
768 0, /* @tp_clear@ */
769 0, /* @tp_richcompare@ */
770 0, /* @tp_weaklistoffset@ */
771 0, /* @tp_iter@ */
963a6148 772 0, /* @tp_iternext@ */
c90f712e 773 PYMETHODS(gcipher), /* @tp_methods@ */
d7ab1bab 774 0, /* @tp_members@ */
775 0, /* @tp_getset@ */
776 0, /* @tp_base@ */
777 0, /* @tp_dict@ */
778 0, /* @tp_descr_get@ */
779 0, /* @tp_descr_set@ */
780 0, /* @tp_dictoffset@ */
781 0, /* @tp_init@ */
782 PyType_GenericAlloc, /* @tp_alloc@ */
783 abstract_pynew, /* @tp_new@ */
3aa33042 784 0, /* @tp_free@ */
d7ab1bab 785 0 /* @tp_is_gc@ */
786};
787
bebf03ab
MW		 788/*----- Authenticated encryption ------------------------------------------*/
789
c6e89d48
MW		 790static PyTypeObject *gcaead_pytype, *gaeadkey_pytype;
791static PyTypeObject *gcaeadaad_pytype, *gaeadaad_pytype;
792static PyTypeObject *gcaeadenc_pytype, *gaeadenc_pytype;
793static PyTypeObject *gcaeaddec_pytype, *gaeaddec_pytype;
794
795typedef struct gcaead_pyobj {
796 PyHeapTypeObject ty;
797 gcaead *aec;
798 struct gcaeadaad_pyobj *aad;
799 struct gcaeadenc_pyobj *enc;
800 struct gcaeaddec_pyobj *dec;
801} gcaead_pyobj;
802
803#define GCAEAD_PYCHECK(o) PyObject_TypeCheck((o), gcaead_pytype)
804#define GCAEAD_AEC(o) (((gcaead_pyobj *)(o))->aec)
805#define GCAEAD_AAD(o) (((gcaead_pyobj *)(o))->aad)
806#define GCAEAD_ENC(o) (((gcaead_pyobj *)(o))->enc)
807#define GCAEAD_DEC(o) (((gcaead_pyobj *)(o))->dec)
808static PyObject *gcaead_pywrap(gcaead *);
809
810typedef struct gaeadkey_pyobj {
811 PyObject_HEAD
812 gaead_key *k;
813} gaeadkey_pyobj;
814
815#define GAEADKEY_PYCHECK(o) PyObject_TypeCheck((o), gaeadkey_pytype)
816#define GAEADKEY_K(o) (((gaeadkey_pyobj *)(o))->k)
817
818typedef struct gcaeadaad_pyobj {
819 PyHeapTypeObject ty;
820 gcaead_pyobj *key;
821} gcaeadaad_pyobj;
822
823#define GCAEADAAD_KEY(o) (((gcaeadaad_pyobj *)(o))->key)
824static PyObject *gaeadaad_pywrap(PyObject *, gaead_aad *, unsigned, size_t);
825
826typedef struct gaeadaad_pyobj {
827 PyObject_HEAD
828 gaead_aad *a;
829 unsigned f;
830#define AEADF_DEAD 32768u
831 size_t hsz, hlen;
832} gaeadaad_pyobj;
833
834#define GAEADAAD_PYCHECK(o) PyObject_TypeCheck((o), gaeadaad_pytype)
835#define GAEADAAD_A(o) (((gaeadaad_pyobj *)(o))->a)
836#define GAEADAAD_F(o) (((gaeadaad_pyobj *)(o))->f)
837#define GAEADAAD_HSZ(o) (((gaeadaad_pyobj *)(o))->hsz)
838#define GAEADAAD_HLEN(o) (((gaeadaad_pyobj *)(o))->hlen)
839
840typedef struct gcaeadenc_pyobj {
841 PyHeapTypeObject ty;
842 gcaead_pyobj *key;
843} gcaeadenc_pyobj;
844
845#define GCAEADENC_KEY(o) (((gcaeadenc_pyobj *)(o))->key)
846static PyObject *gaeadenc_pywrap(PyObject *, gaead_enc *, unsigned,
847 size_t, size_t, size_t);
848
849typedef struct gaeadenc_pyobj {
850 PyObject_HEAD
851 gaead_enc *e;
852 gaeadaad_pyobj *aad;
853 unsigned f;
854 size_t hsz, msz, tsz;
855 size_t mlen;
856} gaeadenc_pyobj;
857
858#define GAEADENC_PYCHECK(o) PyObject_TypeCheck((o), gaeadenc_pytype)
859#define GAEADENC_AAD(o) (((gaeadenc_pyobj *)(o))->aad)
860#define GAEADENC_E(o) (((gaeadenc_pyobj *)(o))->e)
861#define GAEADENC_F(o) (((gaeadenc_pyobj *)(o))->f)
862#define GAEADENC_HSZ(o) (((gaeadenc_pyobj *)(o))->hsz)
863#define GAEADENC_MSZ(o) (((gaeadenc_pyobj *)(o))->msz)
864#define GAEADENC_TSZ(o) (((gaeadenc_pyobj *)(o))->tsz)
865#define GAEADENC_MLEN(o) (((gaeadenc_pyobj *)(o))->mlen)
866
867typedef struct gcaeaddec_pyobj {
868 PyHeapTypeObject ty;
869 gcaead_pyobj *key;
870} gcaeaddec_pyobj;
871
872#define GCAEADDEC_KEY(o) (((gcaeaddec_pyobj *)(o))->key)
873static PyObject *gaeaddec_pywrap(PyObject *, gaead_dec *, unsigned,
874 size_t, size_t, size_t);
875
876typedef struct gaeaddec_pyobj {
877 PyObject_HEAD
878 gaead_dec *d;
879 gaeadaad_pyobj *aad;
880 unsigned f;
881 size_t hsz, csz, tsz;
882 size_t clen;
883} gaeaddec_pyobj;
884
885#define GAEADDEC_PYCHECK(o) PyObject_TypeCheck((o), gaeaddec_pytype)
886#define GAEADDEC_AAD(o) (((gaeaddec_pyobj *)(o))->aad)
887#define GAEADDEC_D(o) (((gaeaddec_pyobj *)(o))->d)
888#define GAEADDEC_F(o) (((gaeaddec_pyobj *)(o))->f)
889#define GAEADDEC_HSZ(o) (((gaeaddec_pyobj *)(o))->hsz)
890#define GAEADDEC_CSZ(o) (((gaeaddec_pyobj *)(o))->csz)
891#define GAEADDEC_TSZ(o) (((gaeaddec_pyobj *)(o))->tsz)
892#define GAEADDEC_CLEN(o) (((gaeaddec_pyobj *)(o))->clen)
893
894static PyObject *gaeadkey_pywrap(PyObject *cobj, gaead_key *k)
bebf03ab
MW		 895{
896 gaeadkey_pyobj *gk;
897
898 if (!cobj) cobj = gcaead_pywrap((/*unconst*/ gcaead *)GAEAD_CLASS(k));
899 else Py_INCREF(cobj);
900 gk = PyObject_NEW(gaeadkey_pyobj, (PyTypeObject *)cobj);
901 gk->k = k;
902 return ((PyObject *)gk);
903}
904
905static PyObject *gaeadkey_pynew(PyTypeObject *ty,
906 PyObject *arg, PyObject *kw)
907{
908 static const char *const kwlist[] = { "k", 0 };
21684137
MW		 909 struct bin k = BIN_INIT;
910 PyObject *rc = 0;
bebf03ab 911
67c75893 912 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
bebf03ab 913 goto end;
67c75893 914 if (keysz(k.sz, GCAEAD_AEC(ty)->keysz) != k.sz) VALERR("bad key length");
21684137
MW		 915 rc = gaeadkey_pywrap((PyObject *)ty,
916 GAEAD_KEY(GCAEAD_AEC(ty), k.p, k.sz));
bebf03ab 917end:
21684137
MW		 918 freebin(&k);
919 return (rc);
bebf03ab
MW		 920}
921
c6e89d48 922static PyObject *gcaead_pywrap(gcaead *aec)
bebf03ab
MW		 923{
924 gcaead_pyobj *gck;
925 gcaeadaad_pyobj *gca;
926 gcaeadenc_pyobj *gce;
927 gcaeaddec_pyobj *gcd;
928
929#define MKTYPE(obj, thing, newfn, namefmt) do { \
930 (obj) = newtype(gcaead_pytype, 0, 0); \
2135a6d3
MW		 931 (obj)->ty.ht_name = TEXT_FORMAT(namefmt, aec->name); \
932 (obj)->ty.ht_type.tp_name = TEXT_PTR((obj)->ty.ht_name); \
bebf03ab
MW		 933 (obj)->ty.ht_type.tp_basicsize = sizeof(gaead##thing##_pyobj); \
934 (obj)->ty.ht_type.tp_base = gaead##thing##_pytype; \
935 Py_INCREF(gaead##thing##_pytype); \
936 (obj)->ty.ht_type.tp_flags = \
937 (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE); \
938 (obj)->ty.ht_type.tp_alloc = PyType_GenericAlloc; \
939 (obj)->ty.ht_type.tp_free = 0; \
940 (obj)->ty.ht_type.tp_new = newfn; \
941 typeready(&(obj)->ty.ht_type); \
942} while (0)
943
944 MKTYPE(gck, key, gaeadkey_pynew, "%s(key)");
945 MKTYPE(gca, aad, abstract_pynew, "%s(aad-hash)");
946 MKTYPE(gce, enc, abstract_pynew, "%s(encrypt)");
947 MKTYPE(gcd, dec, abstract_pynew, "%s(decrypt)");
948
949#undef MKTYPE
950
951 gck->aec = aec; gck->aad = gca; gck->enc = gce; gck->dec = gcd;
952 gca->key = gce->key = gcd->key = gck;
953 return ((PyObject *)gck);
954}
955
956static void gaeadkey_pydealloc(PyObject *me)
2a448f86 957 { GAEAD_DESTROY(GAEADKEY_K(me)); Py_DECREF(Py_TYPE(me)); FREEOBJ(me); }
bebf03ab
MW		 958
959static PyObject *gcaeget_name(PyObject *me, void *hunoz)
2135a6d3 960 { return (TEXT_FROMSTR(GCAEAD_AEC(me)->name)); }
bebf03ab
MW		 961
962static PyObject *gcaeget_keysz(PyObject *me, void *hunoz)
963 { return (keysz_pywrap(GCAEAD_AEC(me)->keysz)); }
964
965static PyObject *gcaeget_noncesz(PyObject *me, void *hunoz)
966 { return (keysz_pywrap(GCAEAD_AEC(me)->noncesz)); }
967
968static PyObject *gcaeget_tagsz(PyObject *me, void *hunoz)
969 { return (keysz_pywrap(GCAEAD_AEC(me)->tagsz)); }
970
971static PyObject *gcaeget_blksz(PyObject *me, void *hunoz)
972 { return (PyInt_FromLong(GCAEAD_AEC(me)->blksz)); }
973
974static PyObject *gcaeget_bufsz(PyObject *me, void *hunoz)
975 { return (PyInt_FromLong(GCAEAD_AEC(me)->bufsz)); }
976
977static PyObject *gcaeget_ohd(PyObject *me, void *hunoz)
978 { return (PyInt_FromLong(GCAEAD_AEC(me)->ohd)); }
979
980static PyObject *gcaeget_flags(PyObject *me, void *hunoz)
981 { return (PyInt_FromLong(GCAEAD_AEC(me)->f)); }
982
c90f712e 983static const PyGetSetDef gcaead_pygetset[] = {
bebf03ab 984#define GETSETNAME(op, name) gcae##op##_##name
d96c882e
MW		 985 GET (keysz, "AEC.keysz -> acceptable key sizes")
986 GET (noncesz, "AEC.noncesz -> acceptable nonce sizes")
987 GET (tagsz, "AEC.tagsz -> acceptable tag sizes")
988 GET (blksz, "AEC.blksz -> block size, or zero")
989 GET (bufsz, "AEC.bufsz -> amount of data buffered internally")
990 GET (ohd, "AEC.ohd -> maximum encryption overhead")
991 GET (name, "AEC.name -> name of this kind of AEAD scheme")
992 GET (flags, "AEC.flags -> mask of `AEADF_...' flags")
bebf03ab
MW		 993#undef GETSETNAME
994 { 0 }
995};
996
91e56f06 997static PyObject *gaekmeth_aad(PyObject *me)
bebf03ab
MW		 998{
999 const gaead_key *k = GAEADKEY_K(me);
1000 PyObject *rc = 0;
1001
bebf03ab
MW		 1002 if (k->ops->c->f&AEADF_AADNDEP)
1003 VALERR("aad must be associated with enc/dec op");
2a448f86 1004 rc = gaeadaad_pywrap((PyObject *)GCAEAD_AAD(Py_TYPE(me)),
bebf03ab
MW		 1005 GAEAD_AAD(k), 0, 0);
1006end:
1007 return (rc);
1008}
1009
1010static int check_aead_encdec(const gcaead *aec, unsigned *f_out, size_t nsz,
1011 PyObject *hszobj, size_t *hsz_out,
1012 PyObject *mszobj, size_t *msz_out,
1013 PyObject *tszobj, size_t *tsz_out)
1014{
1015 unsigned f = 0, miss;
1016 int rc = -1;
1017
1018 if (hszobj != Py_None)
1019 { f |= AEADF_PCHSZ; if (!convszt(hszobj, hsz_out)) goto end; }
1020 if (mszobj != Py_None)
1021 { f |= AEADF_PCMSZ; if (!convszt(mszobj, msz_out)) goto end; }
1022 if (tszobj != Py_None)
1023 { f |= AEADF_PCTSZ; if (!convszt(tszobj, tsz_out)) goto end; }
1024 miss = aec->f&~f;
1025 if (miss&AEADF_PCHSZ) VALERR("header length precommitment required");
1026 if (miss&AEADF_PCMSZ) VALERR("message length precommitment required");
1027 if (miss&AEADF_PCTSZ) VALERR("tag length precommitment required");
1028 if (keysz(nsz, aec->noncesz) != nsz) VALERR("bad nonce length");
1029 if (tszobj != Py_None && keysz(*tsz_out, aec->tagsz) != *tsz_out)
1030 VALERR("bad tag length");
1031 *f_out = f | aec->f; rc = 0;
1032end:
1033 return (rc);
1034}
1035
1036static PyObject *gaekmeth_enc(PyObject *me, PyObject *arg, PyObject *kw)
1037{
1038 static const char *const kwlist[] = { "nonce", "hsz", "msz", "tsz", 0 };
1039 const gaead_key *k = GAEADKEY_K(me);
1040 gaead_enc *e;
1041 PyObject *rc = 0;
21684137 1042 struct bin n = BIN_INIT;
bebf03ab
MW		 1043 PyObject *hszobj = Py_None, *mszobj = Py_None, *tszobj = Py_None;
1044 size_t hsz = 0, msz = 0, tsz = 0;
1045 unsigned f;
1046
67c75893
MW		 1047 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:enc", KWLIST,
1048 convbin, &n, &hszobj, &mszobj, &tszobj))
bebf03ab 1049 goto end;
67c75893 1050 if (check_aead_encdec(k->ops->c, &f, n.sz,
bebf03ab
MW		 1051 hszobj, &hsz, mszobj, &msz, tszobj, &tsz))
1052 goto end;
67c75893 1053 e = GAEAD_ENC(GAEADKEY_K(me), n.p, n.sz, hsz, msz, tsz);
bebf03ab 1054 if (!e) VALERR("bad aead parameter combination");
2a448f86 1055 rc = gaeadenc_pywrap((PyObject *)GCAEAD_ENC(Py_TYPE(me)),
bebf03ab
MW		 1056 e, f, hsz, msz, tsz);
1057end:
21684137 1058 freebin(&n);
bebf03ab
MW		 1059 return (rc);
1060}
1061
1062static PyObject *gaekmeth_dec(PyObject *me, PyObject *arg, PyObject *kw)
1063{
1064 static const char *const kwlist[] = { "nonce", "hsz", "csz", "tsz", 0 };
1065 const gaead_key *k = GAEADKEY_K(me);
1066 gaead_dec *d;
1067 PyObject *rc = 0;
21684137 1068 struct bin n = BIN_INIT;
bebf03ab
MW		 1069 PyObject *hszobj = Py_None, *cszobj = Py_None, *tszobj = Py_None;
1070 size_t hsz = 0, csz = 0, tsz = 0;
1071 unsigned f;
1072
67c75893
MW		 1073 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:dec", KWLIST,
1074 convbin, &n, &hszobj, &cszobj, &tszobj))
bebf03ab 1075 goto end;
67c75893 1076 if (check_aead_encdec(k->ops->c, &f, n.sz,
bebf03ab
MW		 1077 hszobj, &hsz, cszobj, &csz, tszobj, &tsz))
1078 goto end;
67c75893 1079 d = GAEAD_DEC(GAEADKEY_K(me), n.p, n.sz, hsz, csz, tsz);
bebf03ab 1080 if (!d) VALERR("bad aead parameter combination");
2a448f86 1081 rc = gaeaddec_pywrap((PyObject *)GCAEAD_DEC(Py_TYPE(me)),
bebf03ab
MW		 1082 d, f, hsz, csz, tsz);
1083end:
21684137 1084 freebin(&n);
bebf03ab
MW		 1085 return (rc);
1086}
1087
c90f712e 1088static const PyMethodDef gaeadkey_pymethods[] = {
bebf03ab 1089#define METHNAME(name) gaekmeth_##name
91e56f06 1090 NAMETH(aad, "KEY.aad() -> AAD")
d96c882e
MW		 1091 KWMETH(enc, "KEY.enc(NONCE, [hsz], [msz], [tsz]) -> ENC")
1092 KWMETH(dec, "KEY.dec(NONCE, [hsz], [csz], [tsz]) -> DEC")
bebf03ab
MW		 1093#undef METHNAME
1094 { 0 }
1095};
1096
c6e89d48
MW		 1097static PyObject *gaeadaad_pywrap(PyObject *cobj, gaead_aad *a,
1098 unsigned f, size_t hsz)
bebf03ab
MW		 1099{
1100 gaeadaad_pyobj *ga;
1101
1102 assert(cobj); Py_INCREF(cobj);
1103 ga = PyObject_NEW(gaeadaad_pyobj, (PyTypeObject *)cobj);
1104 ga->a = a; ga->f = f; ga->hsz = hsz; ga->hlen = 0;
1105 return ((PyObject *)ga);
1106}
1107
1108static void gaeadaad_pydealloc(PyObject *me)
1109{
1110 gaeadaad_pyobj *ga = (gaeadaad_pyobj *)me;
1111
1112 if (ga->a) GAEAD_DESTROY(ga->a);
2a448f86 1113 Py_DECREF(Py_TYPE(me)); FREEOBJ(me);
bebf03ab
MW		 1114}
1115
1116static int gaea_check(PyObject *me)
1117{
1118 gaeadaad_pyobj *ga = (gaeadaad_pyobj *)me;
1119 int rc = -1;
1120
1121 if ((ga->f&AEADF_DEAD) || !ga->a) VALERR("aad object no longer active");
1122 rc = 0;
1123end:
1124 return (rc);
1125}
1126
1127static void gaea_invalidate(gaeadaad_pyobj *ga)
1128 { if (ga) ga->f |= AEADF_DEAD; }
1129
1130static void gaea_sever(gaeadaad_pyobj **ga_inout)
1131{
1132 gaeadaad_pyobj *ga = *ga_inout;
1133 if (ga) { ga->f |= AEADF_DEAD; ga->a = 0; Py_DECREF(ga); *ga_inout = 0; }
1134}
1135
1136static PyObject *gaeaget_hsz(PyObject *me, void *hunoz)
1137{
1138 if (gaea_check(me)) return (0);
1139 else if (GAEADAAD_F(me)&AEADF_PCHSZ) return getulong(GAEADAAD_HSZ(me));
1140 else RETURN_NONE;
1141}
1142
1143static PyObject *gaeaget_hlen(PyObject *me, void *hunoz)
1144 { return (gaea_check(me) ? 0 : getulong(GAEADAAD_HLEN(me))); }
1145
c90f712e 1146static const PyGetSetDef gaeadaad_pygetset[] = {
bebf03ab 1147#define GETSETNAME(op, name) gaea##op##_##name
d96c882e
MW		 1148 GET (hsz, "AAD.hsz -> precommitted header length or `None'")
1149 GET (hlen, "AAD.hlen -> header length so far")
bebf03ab
MW		 1150#undef GETSETNAME
1151 { 0 }
1152};
1153
91e56f06 1154static PyObject *gaeameth_copy(PyObject *me)
bebf03ab
MW		 1155{
1156 PyObject *rc = 0;
1157
bebf03ab
MW		 1158 if (gaea_check(me)) goto end;
1159 if (GAEADAAD_F(me)&AEADF_AADNDEP)
1160 VALERR("can't duplicate nonce-dependent aad");
2a448f86 1161 rc = gaeadaad_pywrap((PyObject *)Py_TYPE(me),
bebf03ab 1162 GAEAD_DUP(GAEADAAD_A(me)), 0, 0);
de7abe02 1163 GAEADAAD_HLEN(rc) = GAEADAAD_HLEN(me);
bebf03ab
MW		 1164end:
1165 return (rc);
1166}
1167
1168static int gaeadaad_hash(PyObject *me, const void *h, size_t hsz)
1169{
1170 gaeadaad_pyobj *ga = (gaeadaad_pyobj *)me;
1171 int rc = -1;
1172
1173 if (gaea_check(me)) goto end;
1174 if ((ga->f&AEADF_NOAAD) && hsz)
1175 VALERR("header data not permitted");
1176 if ((ga->f&AEADF_PCHSZ) && hsz > ga->hsz - ga->hlen)
1177 VALERR("too large for precommitted header length");
1178 GAEAD_HASH(ga->a, h, hsz); ga->hlen += hsz;
1179 rc = 0;
1180end:
1181 return (rc);
1182}
1183
bebf03ab
MW		 1184static PyObject *gaeameth_hash(PyObject *me, PyObject *arg)
1185{
21684137
MW		 1186 struct bin h = BIN_INIT;
1187 PyObject *rc = 0;
bebf03ab 1188
21684137
MW		 1189 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &h)) goto end;
1190 if (gaeadaad_hash(me, h.p, h.sz)) goto end;
1191 rc = me; Py_INCREF(rc);
1192end:
1193 freebin(&h);
1194 return (rc);
bebf03ab
MW		 1195}
1196
1197#define GAEAMETH_HASHU_(n, W, w) \
1198 static PyObject *gaeameth_hashu##w(PyObject *me, PyObject *arg) \
1199 { \
1200 uint##n x; octet b[SZ_##W]; \
21684137 1201 \
bebf03ab
MW		 1202 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
1203 STORE##W(b, x); if (gaeadaad_hash(me, b, sizeof(b))) return (0); \
1204 RETURN_ME; \
1205 }
1206DOUINTCONV(GAEAMETH_HASHU_)
1207
1208#define GAEAMETH_HASHBUF_(n, W, w) \
1209 static PyObject *gaeameth_hashbuf##w(PyObject *me, PyObject *arg) \
1210 { \
21684137
MW		 1211 struct bin in = BIN_INIT; octet b[SZ_##W]; \
1212 PyObject *rc = 0; \
1213 \
67c75893 1214 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 1215 if (in.sz > MASK##n) VALERR("too large"); \
67c75893
MW		 1216 STORE##W(b, in.sz); if (gaeadaad_hash(me, b, sizeof(b))) goto end; \
1217 if (gaeadaad_hash(me, in.p, in.sz)) goto end; \
21684137 1218 rc = me; Py_INCREF(rc); \
bebf03ab 1219 end: \
21684137
MW		 1220 freebin(&in); \
1221 return (rc); \
bebf03ab
MW		 1222 }
1223DOUINTCONV(GAEAMETH_HASHBUF_)
1224
1225static PyObject *gaeameth_hashstrz(PyObject *me, PyObject *arg)
1226{
1227 char *p;
1228 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1229 if (gaeadaad_hash(me, p, strlen(p) + 1)) return (0);
1230 RETURN_ME;
1231}
1232
c90f712e 1233static const PyMethodDef gaeadaad_pymethods[] = {
bebf03ab 1234#define METHNAME(name) gaeameth_##name
91e56f06 1235 NAMETH(copy, "AAD.copy() -> AAD'")
d96c882e 1236 METH (hash, "AAD.hash(H)")
bebf03ab
MW		 1237#define METHU_(n, W, w) METH(hashu##w, "AAD.hashu" #w "(WORD)")
1238 DOUINTCONV(METHU_)
1239#undef METHU_
1240#define METHBUF_(n, W, w) METH(hashbuf##w, "AAD.hashbuf" #w "(BYTES)")
1241 DOUINTCONV(METHBUF_)
1242#undef METHBUF_
d96c882e 1243 METH (hashstrz, "AAD.hashstrz(STRING)")
bebf03ab
MW		 1244#undef METHNAME
1245 { 0 }
1246};
1247
c6e89d48
MW		 1248static PyObject *gaeadenc_pywrap(PyObject *cobj, gaead_enc *e, unsigned f,
1249 size_t hsz, size_t msz, size_t tsz)
bebf03ab
MW		 1250{
1251 gaeadenc_pyobj *ge;
1252
1253 assert(cobj); Py_INCREF(cobj);
1254 ge = PyObject_NEW(gaeadenc_pyobj, (PyTypeObject *)cobj);
1255 ge->e = e; ge->f = f; ge->hsz = hsz; ge->msz = msz; ge->tsz = tsz;
1256 ge->aad = 0; ge->mlen = 0;
1257 return ((PyObject *)ge);
1258}
1259
1260static void gaeadenc_pydealloc(PyObject *me)
1261{
1262 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
1263
1264 gaea_sever(&ge->aad); GAEAD_DESTROY(ge->e);
2a448f86 1265 Py_DECREF(Py_TYPE(me)); FREEOBJ(me);
bebf03ab
MW		 1266}
1267
1268static PyObject *gaeeget_hsz(PyObject *me, void *hunoz)
1269{
1270 if (GAEADENC_F(me)&AEADF_PCHSZ) return getulong(GAEADENC_HSZ(me));
1271 else RETURN_NONE;
1272}
1273
1274static PyObject *gaeeget_msz(PyObject *me, void *hunoz)
1275{
1276 if (GAEADENC_F(me)&AEADF_PCMSZ) return getulong(GAEADENC_MSZ(me));
1277 else RETURN_NONE;
1278}
1279
1280static PyObject *gaeeget_tsz(PyObject *me, void *hunoz)
1281{
1282 if (GAEADENC_F(me)&AEADF_PCTSZ) return getulong(GAEADENC_TSZ(me));
1283 else RETURN_NONE;
1284}
1285
1286static PyObject *gaeeget_mlen(PyObject *me, void *hunoz)
1287 { return getulong(GAEADENC_MLEN(me)); }
1288
c90f712e 1289static const PyGetSetDef gaeadenc_pygetset[] = {
bebf03ab 1290#define GETSETNAME(op, name) gaee##op##_##name
d96c882e
MW		 1291 GET (hsz, "ENC.hsz -> precommitted header length or `None'")
1292 GET (msz, "ENC.msz -> precommitted message length or `None'")
1293 GET (tsz, "ENC.tsz -> precommitted tag length or `None'")
1294 GET (mlen, "ENC.mlen -> message length so far")
bebf03ab
MW		 1295#undef GETSETNAME
1296 { 0 }
1297};
1298
91e56f06 1299static PyObject *gaeemeth_aad(PyObject *me)
bebf03ab
MW		 1300{
1301 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
1302 PyObject *rc = 0;
1303
bebf03ab 1304 if (!(ge->f&AEADF_AADNDEP))
2a448f86 1305 rc = gaeadaad_pywrap((PyObject *)GCAEADENC_KEY(Py_TYPE(ge))->aad,
bebf03ab
MW		 1306 GAEAD_AAD(ge->e), 0, 0);
1307 else {
1308 if ((ge->f&AEADF_AADFIRST) && ge->mlen)
1309 VALERR("too late for aad");
1310 if (!ge->aad)
1311 ge->aad = (gaeadaad_pyobj *)
2a448f86 1312 gaeadaad_pywrap((PyObject *)GCAEADENC_KEY(Py_TYPE(ge))->aad,
f77c6b68
MW		 1313 GAEAD_AAD(ge->e), ge->f&(AEADF_PCHSZ | AEADF_NOAAD),
1314 ge->hsz);
bebf03ab
MW		 1315 Py_INCREF(ge->aad);
1316 rc = (PyObject *)ge->aad;
1317 }
1318end:
1319 return (rc);
1320}
1321
1322static PyObject *gaeemeth_reinit(PyObject *me, PyObject *arg, PyObject *kw)
1323{
1324 static const char *const kwlist[] = { "nonce", "hsz", "msz", "tsz", 0 };
1325 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
21684137 1326 struct bin n = BIN_INIT;
bebf03ab
MW		 1327 PyObject *hszobj = Py_None, *mszobj = Py_None, *tszobj = Py_None;
1328 size_t hsz = 0, msz = 0, tsz = 0;
21684137 1329 PyObject *rc = 0;
bebf03ab
MW		 1330 unsigned f;
1331
67c75893
MW		 1332 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:enc", KWLIST,
1333 convbin, &n, &hszobj, &mszobj, &tszobj))
bebf03ab 1334 goto end;
67c75893 1335 if (check_aead_encdec(ge->e->ops->c, &f, n.sz,
bebf03ab
MW		 1336 hszobj, &hsz, mszobj, &msz, tszobj, &tsz))
1337 goto end;
67c75893 1338 if (GAEAD_REINIT(ge->e, n.p, n.sz, hsz, msz, tsz))
bebf03ab
MW		 1339 VALERR("bad aead parameter combination");
1340 gaea_sever(&ge->aad);
1341 ge->f = f; ge->hsz = hsz; ge->msz = msz; ge->tsz = tsz;
21684137 1342 rc = me; Py_INCREF(rc);
bebf03ab 1343end:
21684137
MW		 1344 freebin(&n);
1345 return (rc);
bebf03ab
MW		 1346}
1347
1348static PyObject *gaeemeth_encrypt(PyObject *me, PyObject *arg)
1349{
1350 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
21684137 1351 struct bin m = BIN_INIT;
bebf03ab
MW		 1352 char *c = 0; size_t csz; buf b;
1353 int err;
1354 PyObject *rc = 0;
1355
67c75893 1356 if (!PyArg_ParseTuple(arg, "O&:encrypt", convbin, &m)) goto end;
bebf03ab
MW		 1357 if (ge->f&AEADF_AADFIRST) {
1358 if ((ge->f&AEADF_PCHSZ) && (ge->aad ? ge->aad->hlen : 0) != ge->hsz)
1359 VALERR("header doesn't match precommitted length");
1360 gaea_invalidate(ge->aad);
1361 }
67c75893 1362 if ((ge->f&AEADF_PCMSZ) && m.sz > ge->msz - ge->mlen)
bebf03ab 1363 VALERR("too large for precommitted message length");
67c75893
MW		 1364 csz = m.sz + ge->e->ops->c->bufsz; c = xmalloc(csz); buf_init(&b, c, csz);
1365 err = GAEAD_ENCRYPT(ge->e, m.p, m.sz, &b); assert(!err); (void)err;
1366 buf_flip(&b); rc = bytestring_pywrapbuf(&b); ge->mlen += m.sz;
bebf03ab 1367end:
21684137 1368 freebin(&m); xfree(c);
bebf03ab
MW		 1369 return (rc);
1370}
1371
1372static PyObject *gaeemeth_done(PyObject *me, PyObject *arg, PyObject *kw)
1373{
1374 static const char *const kwlist[] = { "tsz", "aad", 0 };
1375 gaeadenc_pyobj *ge = (gaeadenc_pyobj *)me;
1376 PyObject *aad = Py_None;
1377 char *c = 0; size_t csz; buf b;
1378 PyObject *tszobj = Py_None; PyObject *tag; size_t tsz;
1379 int err;
1380 PyObject *rc = 0;
1381
1382 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|OO:done", KWLIST,
1383 &tszobj, &aad))
1384 goto end;
1385 if (tszobj != Py_None && !convszt(tszobj, &tsz)) goto end;
1386 if (aad != Py_None &&
1387 !PyObject_TypeCheck(aad,
2a448f86 1388 (PyTypeObject *)GCAEADENC_KEY(Py_TYPE(me))->aad))
bebf03ab
MW		 1389 TYERR("wanted aad");
1390 if ((ge->f&AEADF_AADNDEP) && aad != Py_None && aad != (PyObject *)ge->aad)
1391 VALERR("mismatched aad");
1392 if ((ge->f&AEADF_PCHSZ) &&
1393 (aad == Py_None ? 0 : GAEADAAD_HLEN(aad)) != ge->hsz)
1394 VALERR("header doesn't match precommitted length");
1395 if ((ge->f&AEADF_PCMSZ) && ge->mlen != ge->msz)
1396 VALERR("message doesn't match precommitted length");
1397 if (tszobj == Py_None) {
1398 if (ge->f&AEADF_PCTSZ) tsz = ge->tsz;
1399 else tsz = keysz(0, ge->e->ops->c->tagsz);
1400 } else {
1401 if ((ge->f&AEADF_PCTSZ) && tsz != ge->tsz)
1402 VALERR("tag length doesn't match precommitted value");
1403 if (keysz(tsz, ge->e->ops->c->tagsz) != tsz) VALERR("bad tag length");
1404 }
1405 csz = ge->e->ops->c->bufsz; c = xmalloc(csz); buf_init(&b, c, csz);
1406 tag = bytestring_pywrap(0, tsz);
1407 err = GAEAD_DONE(ge->e, aad == Py_None ? 0 : GAEADAAD_A(aad), &b,
2135a6d3 1408 BIN_PTR(tag), tsz);
bebf03ab
MW		 1409 assert(!err); (void)err;
1410 buf_flip(&b); rc = Py_BuildValue("NN", bytestring_pywrapbuf(&b), tag);
1411end:
1412 xfree(c);
1413 return (rc);
1414}
1415
c90f712e 1416static const PyMethodDef gaeadenc_pymethods[] = {
bebf03ab 1417#define METHNAME(name) gaeemeth_##name
91e56f06 1418 NAMETH(aad, "ENC.aad() -> AAD")
d96c882e
MW		 1419 KWMETH(reinit, "ENC.reinit(NONCE, [hsz], [msz], [tsz])")
1420 METH (encrypt, "ENC.encrypt(MSG) -> CT")
1421 KWMETH(done, "ENC.done([tsz], [aad]) -> CT, TAG")
bebf03ab
MW		 1422#undef METHNAME
1423 { 0 }
1424};
1425
c6e89d48
MW		 1426static PyObject *gaeaddec_pywrap(PyObject *cobj, gaead_dec *d, unsigned f,
1427 size_t hsz, size_t csz, size_t tsz)
bebf03ab
MW		 1428{
1429 gaeaddec_pyobj *gd;
1430 assert(cobj); Py_INCREF(cobj);
1431 gd = PyObject_NEW(gaeaddec_pyobj, (PyTypeObject *)cobj);
1432 gd->d = d; gd->f = f; gd->hsz = hsz; gd->csz = csz; gd->tsz = tsz;
1433 gd->aad = 0; gd->clen = 0;
1434 return ((PyObject *)gd);
1435}
1436
1437static void gaeaddec_pydealloc(PyObject *me)
1438{
1439 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
1440
1441 gaea_sever(&gd->aad); GAEAD_DESTROY(GAEADDEC_D(me));
2a448f86 1442 Py_DECREF(Py_TYPE(me)); FREEOBJ(me);
bebf03ab
MW		 1443}
1444
1445static PyObject *gaedget_hsz(PyObject *me, void *hunoz)
1446{
1447 if (GAEADDEC_F(me)&AEADF_PCHSZ) return getulong(GAEADDEC_HSZ(me));
1448 else RETURN_NONE;
1449}
1450
1451static PyObject *gaedget_csz(PyObject *me, void *hunoz)
1452{
1453 if (GAEADDEC_F(me)&AEADF_PCMSZ) return getulong(GAEADDEC_CSZ(me));
1454 else RETURN_NONE;
1455}
1456
1457static PyObject *gaedget_tsz(PyObject *me, void *hunoz)
1458{
1459 if (GAEADDEC_F(me)&AEADF_PCTSZ) return getulong(GAEADDEC_TSZ(me));
1460 else RETURN_NONE;
1461}
1462
1463static PyObject *gaedget_clen(PyObject *me, void *hunoz)
1464 { return getulong(GAEADDEC_CLEN(me)); }
1465
c90f712e 1466static const PyGetSetDef gaeaddec_pygetset[] = {
bebf03ab 1467#define GETSETNAME(op, name) gaed##op##_##name
d96c882e
MW		 1468 GET (hsz, "DEC.hsz -> precommitted header length or `None'")
1469 GET (csz, "DEC.csz -> precommitted ciphertext length or `None'")
1470 GET (tsz, "DEC.tsz -> precommitted tag length or `None'")
1471 GET (clen, "DEC.clen -> ciphertext length so far")
bebf03ab
MW		 1472#undef GETSETNAME
1473 { 0 }
1474};
1475
91e56f06 1476static PyObject *gaedmeth_aad(PyObject *me)
bebf03ab
MW		 1477{
1478 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
1479
bebf03ab 1480 if (!(gd->f&AEADF_AADNDEP))
2a448f86 1481 return (gaeadaad_pywrap((PyObject *)GCAEADDEC_KEY(Py_TYPE(gd))->aad,
bebf03ab
MW		 1482 GAEAD_AAD(gd->d), 0, 0));
1483 else {
1484 if (!gd->aad)
1485 gd->aad = (gaeadaad_pyobj *)
2a448f86 1486 gaeadaad_pywrap((PyObject *)GCAEADENC_KEY(Py_TYPE(gd))->aad,
f77c6b68
MW		 1487 GAEAD_AAD(gd->d), gd->f&(AEADF_PCHSZ | AEADF_NOAAD),
1488 gd->hsz);
bebf03ab
MW		 1489 Py_INCREF(gd->aad);
1490 return ((PyObject *)gd->aad);
1491 }
1492}
1493
1494static PyObject *gaedmeth_reinit(PyObject *me, PyObject *arg, PyObject *kw)
1495{
1496 static const char *const kwlist[] = { "nonce", "hsz", "csz", "tsz", 0 };
1497 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
21684137 1498 struct bin n = BIN_INIT;
bebf03ab
MW		 1499 PyObject *hszobj = Py_None, *cszobj = Py_None, *tszobj = Py_None;
1500 size_t hsz = 0, csz = 0, tsz = 0;
21684137 1501 PyObject *rc = 0;
bebf03ab
MW		 1502 unsigned f;
1503
67c75893
MW		 1504 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|OOO:enc", KWLIST,
1505 convbin, &n, &hszobj, &cszobj, &tszobj))
bebf03ab 1506 goto end;
67c75893 1507 if (check_aead_encdec(gd->d->ops->c, &f, n.sz,
bebf03ab
MW		 1508 hszobj, &hsz, cszobj, &csz, tszobj, &tsz))
1509 goto end;
67c75893 1510 if (GAEAD_REINIT(gd->d, n.p, n.sz, hsz, csz, tsz))
bebf03ab
MW		 1511 VALERR("bad aead parameter combination");
1512 gaea_sever(&gd->aad);
1513 gd->f = f; gd->hsz = hsz; gd->csz = csz; gd->tsz = tsz;
21684137 1514 rc = me; Py_INCREF(rc);
bebf03ab 1515end:
21684137 1516 freebin(&n);
bebf03ab
MW		 1517 return (0);
1518}
1519
1520static PyObject *gaedmeth_decrypt(PyObject *me, PyObject *arg)
1521{
1522 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
21684137 1523 struct bin c = BIN_INIT;
bebf03ab
MW		 1524 char *m = 0; size_t msz; buf b;
1525 int err;
1526 PyObject *rc = 0;
1527
67c75893 1528 if (!PyArg_ParseTuple(arg, "O&:decrypt", convbin, &c)) goto end;
bebf03ab
MW		 1529 if (gd->f&AEADF_AADFIRST) {
1530 if ((gd->f&AEADF_PCHSZ) && (gd->aad ? gd->aad->hlen : 0) != gd->hsz)
1531 VALERR("header doesn't match precommitted length");
1532 gaea_invalidate(gd->aad);
1533 }
67c75893 1534 if ((gd->f&AEADF_PCMSZ) && c.sz > gd->csz - gd->clen)
bebf03ab 1535 VALERR("too large for precommitted message length");
67c75893
MW		 1536 msz = c.sz + gd->d->ops->c->bufsz; m = xmalloc(msz); buf_init(&b, m, msz);
1537 err = GAEAD_DECRYPT(gd->d, c.p, c.sz, &b); assert(!err); (void)err;
1538 buf_flip(&b); rc = bytestring_pywrapbuf(&b); gd->clen += c.sz;
bebf03ab 1539end:
21684137 1540 freebin(&c); xfree(m);
bebf03ab
MW		 1541 return (rc);
1542}
1543
1544static PyObject *gaedmeth_done(PyObject *me, PyObject *arg, PyObject *kw)
1545{
1546 static const char *const kwlist[] = { "tag", "aad", 0 };
1547 gaeaddec_pyobj *gd = (gaeaddec_pyobj *)me;
1548 PyObject *aad = Py_None;
21684137 1549 struct bin t = BIN_INIT;
bebf03ab
MW		 1550 char *m = 0; size_t msz; buf b;
1551 int err;
1552 PyObject *rc = 0;
1553
67c75893
MW		 1554 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O:done", KWLIST,
1555 convbin, &t, &aad))
bebf03ab
MW		 1556 goto end;
1557 if (aad != Py_None &&
1558 !PyObject_TypeCheck(aad,
2a448f86 1559 (PyTypeObject *)GCAEADENC_KEY(Py_TYPE(me))->aad))
bebf03ab
MW		 1560 TYERR("wanted aad");
1561 if ((gd->f&AEADF_AADNDEP) && aad != Py_None && aad != (PyObject *)gd->aad)
1562 VALERR("mismatched aad");
1563 if ((gd->f&AEADF_PCHSZ) &&
1564 (aad == Py_None ? 0 : GAEADAAD_HLEN(aad)) != gd->hsz)
1565 VALERR("header doesn't match precommitted length");
1566 if ((gd->f&AEADF_PCMSZ) && gd->clen != gd->csz)
1567 VALERR("message doesn't match precommitted length");
67c75893 1568 if ((gd->f&AEADF_PCTSZ) && t.sz != gd->tsz)
bebf03ab 1569 VALERR("tag length doesn't match precommitted value");
67c75893 1570 if (keysz(t.sz, gd->d->ops->c->tagsz) != t.sz) VALERR("bad tag length");
bebf03ab 1571 msz = gd->d->ops->c->bufsz; m = xmalloc(msz); buf_init(&b, m, msz);
67c75893
MW		 1572 err = GAEAD_DONE(gd->d, aad == Py_None ? 0 : GAEADAAD_A(aad),
1573 &b, t.p, t.sz);
bebf03ab
MW		 1574 assert(err >= 0);
1575 if (!err) VALERR("decryption failed");
1576 buf_flip(&b); rc = bytestring_pywrapbuf(&b);
1577end:
21684137 1578 freebin(&t); xfree(m);
bebf03ab
MW		 1579 return (rc);
1580}
1581
c90f712e 1582static const PyMethodDef gaeaddec_pymethods[] = {
bebf03ab 1583#define METHNAME(name) gaedmeth_##name
91e56f06 1584 NAMETH(aad, "DEC.aad() -> AAD")
d96c882e
MW		 1585 KWMETH(reinit, "DEC.reinit(NONCE, [hsz], [csz], [tsz])")
1586 METH (decrypt, "DEC.decrypt(CT) -> MSG")
1587 KWMETH(done, "DEC.done(TAG, [aad]) -> MSG | None")
bebf03ab
MW		 1588#undef METHNAME
1589 { 0 }
1590};
1591
c263b05c 1592static const PyTypeObject gcaead_pytype_skel = {
591bf41b 1593 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1594 "GCAEAD", /* @tp_name@ */
1595 sizeof(gcaead_pyobj), /* @tp_basicsize@ */
1596 0, /* @tp_itemsize@ */
1597
1598 0, /* @tp_dealloc@ */
1599 0, /* @tp_print@ */
1600 0, /* @tp_getattr@ */
1601 0, /* @tp_setattr@ */
1602 0, /* @tp_compare@ */
1603 0, /* @tp_repr@ */
1604 0, /* @tp_as_number@ */
1605 0, /* @tp_as_sequence@ */
1606 0, /* @tp_as_mapping@ */
1607 0, /* @tp_hash@ */
1608 0, /* @tp_call@ */
1609 0, /* @tp_str@ */
1610 0, /* @tp_getattro@ */
1611 0, /* @tp_setattro@ */
1612 0, /* @tp_as_buffer@ */
1613 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1614 Py_TPFLAGS_BASETYPE,
1615
1616 /* @tp_doc@ */
d96c882e 1617 "Authenticated encryption (key) metaclass.",
bebf03ab
MW		 1618
1619 0, /* @tp_traverse@ */
1620 0, /* @tp_clear@ */
1621 0, /* @tp_richcompare@ */
1622 0, /* @tp_weaklistoffset@ */
1623 0, /* @tp_iter@ */
1624 0, /* @tp_iternext@ */
1625 0, /* @tp_methods@ */
1626 0, /* @tp_members@ */
c90f712e 1627 PYGETSET(gcaead), /* @tp_getset@ */
bebf03ab
MW		 1628 0, /* @tp_base@ */
1629 0, /* @tp_dict@ */
1630 0, /* @tp_descr_get@ */
1631 0, /* @tp_descr_set@ */
1632 0, /* @tp_dictoffset@ */
1633 0, /* @tp_init@ */
1634 PyType_GenericAlloc, /* @tp_alloc@ */
1635 abstract_pynew, /* @tp_new@ */
1636 0, /* @tp_free@ */
1637 0 /* @tp_is_gc@ */
1638};
1639
c263b05c 1640static const PyTypeObject gaeadkey_pytype_skel = {
591bf41b 1641 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1642 "GAEKey", /* @tp_name@ */
1643 sizeof(gaeadkey_pyobj), /* @tp_basicsize@ */
1644 0, /* @tp_itemsize@ */
1645
1646 gaeadkey_pydealloc, /* @tp_dealloc@ */
1647 0, /* @tp_print@ */
1648 0, /* @tp_getattr@ */
1649 0, /* @tp_setattr@ */
1650 0, /* @tp_compare@ */
1651 0, /* @tp_repr@ */
1652 0, /* @tp_as_number@ */
1653 0, /* @tp_as_sequence@ */
1654 0, /* @tp_as_mapping@ */
1655 0, /* @tp_hash@ */
1656 0, /* @tp_call@ */
1657 0, /* @tp_str@ */
1658 0, /* @tp_getattro@ */
1659 0, /* @tp_setattro@ */
1660 0, /* @tp_as_buffer@ */
1661 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1662 Py_TPFLAGS_BASETYPE,
1663
1664 /* @tp_doc@ */
d96c882e 1665 "Authenticated encryption key.",
bebf03ab
MW		 1666
1667 0, /* @tp_traverse@ */
1668 0, /* @tp_clear@ */
1669 0, /* @tp_richcompare@ */
1670 0, /* @tp_weaklistoffset@ */
1671 0, /* @tp_iter@ */
1672 0, /* @tp_iternext@ */
c90f712e 1673 PYMETHODS(gaeadkey), /* @tp_methods@ */
bebf03ab
MW		 1674 0, /* @tp_members@ */
1675 0, /* @tp_getset@ */
1676 0, /* @tp_base@ */
1677 0, /* @tp_dict@ */
1678 0, /* @tp_descr_get@ */
1679 0, /* @tp_descr_set@ */
1680 0, /* @tp_dictoffset@ */
1681 0, /* @tp_init@ */
1682 PyType_GenericAlloc, /* @tp_alloc@ */
1683 abstract_pynew, /* @tp_new@ */
1684 0, /* @tp_free@ */
1685 0 /* @tp_is_gc@ */
1686};
1687
c263b05c 1688static const PyTypeObject gcaeadaad_pytype_skel = {
591bf41b 1689 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1690 "GAEAADClass", /* @tp_name@ */
1691 sizeof(gcaeadaad_pyobj), /* @tp_basicsize@ */
1692 0, /* @tp_itemsize@ */
1693
1694 0, /* @tp_dealloc@ */
1695 0, /* @tp_print@ */
1696 0, /* @tp_getattr@ */
1697 0, /* @tp_setattr@ */
1698 0, /* @tp_compare@ */
1699 0, /* @tp_repr@ */
1700 0, /* @tp_as_number@ */
1701 0, /* @tp_as_sequence@ */
1702 0, /* @tp_as_mapping@ */
1703 0, /* @tp_hash@ */
1704 0, /* @tp_call@ */
1705 0, /* @tp_str@ */
1706 0, /* @tp_getattro@ */
1707 0, /* @tp_setattro@ */
1708 0, /* @tp_as_buffer@ */
1709 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1710 Py_TPFLAGS_BASETYPE,
1711
1712 /* @tp_doc@ */
d96c882e 1713 "Authenticated encryption additional-data hash metaclass.",
bebf03ab
MW		 1714
1715 0, /* @tp_traverse@ */
1716 0, /* @tp_clear@ */
1717 0, /* @tp_richcompare@ */
1718 0, /* @tp_weaklistoffset@ */
1719 0, /* @tp_iter@ */
1720 0, /* @tp_iternext@ */
1721 0, /* @tp_methods@ */
1722 0, /* @tp_members@ */
1723 0, /* @tp_getset@ */
1724 0, /* @tp_base@ */
1725 0, /* @tp_dict@ */
1726 0, /* @tp_descr_get@ */
1727 0, /* @tp_descr_set@ */
1728 0, /* @tp_dictoffset@ */
1729 0, /* @tp_init@ */
1730 PyType_GenericAlloc, /* @tp_alloc@ */
1731 abstract_pynew, /* @tp_new@ */
1732 0, /* @tp_free@ */
1733 0 /* @tp_is_gc@ */
1734};
1735
c263b05c 1736static const PyTypeObject gaeadaad_pytype_skel = {
591bf41b 1737 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1738 "GAEAAD", /* @tp_name@ */
1739 sizeof(gaeadaad_pyobj), /* @tp_basicsize@ */
1740 0, /* @tp_itemsize@ */
1741
1742 gaeadaad_pydealloc, /* @tp_dealloc@ */
1743 0, /* @tp_print@ */
1744 0, /* @tp_getattr@ */
1745 0, /* @tp_setattr@ */
1746 0, /* @tp_compare@ */
1747 0, /* @tp_repr@ */
1748 0, /* @tp_as_number@ */
1749 0, /* @tp_as_sequence@ */
1750 0, /* @tp_as_mapping@ */
1751 0, /* @tp_hash@ */
1752 0, /* @tp_call@ */
1753 0, /* @tp_str@ */
1754 0, /* @tp_getattro@ */
1755 0, /* @tp_setattro@ */
1756 0, /* @tp_as_buffer@ */
1757 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1758 Py_TPFLAGS_BASETYPE,
1759
1760 /* @tp_doc@ */
d96c882e 1761 "Authenticated encryption AAD hash.",
bebf03ab
MW		 1762
1763 0, /* @tp_traverse@ */
1764 0, /* @tp_clear@ */
1765 0, /* @tp_richcompare@ */
1766 0, /* @tp_weaklistoffset@ */
1767 0, /* @tp_iter@ */
1768 0, /* @tp_iternext@ */
c90f712e 1769 PYMETHODS(gaeadaad), /* @tp_methods@ */
bebf03ab 1770 0, /* @tp_members@ */
c90f712e 1771 PYGETSET(gaeadaad), /* @tp_getset@ */
bebf03ab
MW		 1772 0, /* @tp_base@ */
1773 0, /* @tp_dict@ */
1774 0, /* @tp_descr_get@ */
1775 0, /* @tp_descr_set@ */
1776 0, /* @tp_dictoffset@ */
1777 0, /* @tp_init@ */
1778 PyType_GenericAlloc, /* @tp_alloc@ */
1779 abstract_pynew, /* @tp_new@ */
1780 0, /* @tp_free@ */
1781 0 /* @tp_is_gc@ */
1782};
1783
c263b05c 1784static const PyTypeObject gcaeadenc_pytype_skel = {
591bf41b 1785 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1786 "GAEEncClass", /* @tp_name@ */
1787 sizeof(gcaeadenc_pyobj), /* @tp_basicsize@ */
1788 0, /* @tp_itemsize@ */
1789
1790 0, /* @tp_dealloc@ */
1791 0, /* @tp_print@ */
1792 0, /* @tp_getattr@ */
1793 0, /* @tp_setattr@ */
1794 0, /* @tp_compare@ */
1795 0, /* @tp_repr@ */
1796 0, /* @tp_as_number@ */
1797 0, /* @tp_as_sequence@ */
1798 0, /* @tp_as_mapping@ */
1799 0, /* @tp_hash@ */
1800 0, /* @tp_call@ */
1801 0, /* @tp_str@ */
1802 0, /* @tp_getattro@ */
1803 0, /* @tp_setattro@ */
1804 0, /* @tp_as_buffer@ */
1805 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1806 Py_TPFLAGS_BASETYPE,
1807
1808 /* @tp_doc@ */
d96c882e 1809 "Authenticated encryption operation metaclass.",
bebf03ab
MW		 1810
1811 0, /* @tp_traverse@ */
1812 0, /* @tp_clear@ */
1813 0, /* @tp_richcompare@ */
1814 0, /* @tp_weaklistoffset@ */
1815 0, /* @tp_iter@ */
1816 0, /* @tp_iternext@ */
1817 0, /* @tp_methods@ */
1818 0, /* @tp_members@ */
1819 0, /* @tp_getset@ */
1820 0, /* @tp_base@ */
1821 0, /* @tp_dict@ */
1822 0, /* @tp_descr_get@ */
1823 0, /* @tp_descr_set@ */
1824 0, /* @tp_dictoffset@ */
1825 0, /* @tp_init@ */
1826 PyType_GenericAlloc, /* @tp_alloc@ */
1827 abstract_pynew, /* @tp_new@ */
1828 0, /* @tp_free@ */
1829 0 /* @tp_is_gc@ */
1830};
1831
c263b05c 1832static const PyTypeObject gaeadenc_pytype_skel = {
591bf41b 1833 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1834 "GAEEnc", /* @tp_name@ */
1835 sizeof(gaeadenc_pyobj), /* @tp_basicsize@ */
1836 0, /* @tp_itemsize@ */
1837
1838 gaeadenc_pydealloc, /* @tp_dealloc@ */
1839 0, /* @tp_print@ */
1840 0, /* @tp_getattr@ */
1841 0, /* @tp_setattr@ */
1842 0, /* @tp_compare@ */
1843 0, /* @tp_repr@ */
1844 0, /* @tp_as_number@ */
1845 0, /* @tp_as_sequence@ */
1846 0, /* @tp_as_mapping@ */
1847 0, /* @tp_hash@ */
1848 0, /* @tp_call@ */
1849 0, /* @tp_str@ */
1850 0, /* @tp_getattro@ */
1851 0, /* @tp_setattro@ */
1852 0, /* @tp_as_buffer@ */
1853 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1854 Py_TPFLAGS_BASETYPE,
1855
1856 /* @tp_doc@ */
d96c882e 1857 "Authenticated encryption operation.",
bebf03ab
MW		 1858
1859 0, /* @tp_traverse@ */
1860 0, /* @tp_clear@ */
1861 0, /* @tp_richcompare@ */
1862 0, /* @tp_weaklistoffset@ */
1863 0, /* @tp_iter@ */
1864 0, /* @tp_iternext@ */
c90f712e 1865 PYMETHODS(gaeadenc), /* @tp_methods@ */
bebf03ab 1866 0, /* @tp_members@ */
c90f712e 1867 PYGETSET(gaeadenc), /* @tp_getset@ */
bebf03ab
MW		 1868 0, /* @tp_base@ */
1869 0, /* @tp_dict@ */
1870 0, /* @tp_descr_get@ */
1871 0, /* @tp_descr_set@ */
1872 0, /* @tp_dictoffset@ */
1873 0, /* @tp_init@ */
1874 PyType_GenericAlloc, /* @tp_alloc@ */
1875 abstract_pynew, /* @tp_new@ */
1876 0, /* @tp_free@ */
1877 0 /* @tp_is_gc@ */
1878};
1879
c263b05c 1880static const PyTypeObject gcaeaddec_pytype_skel = {
591bf41b 1881 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1882 "GAEDecClass", /* @tp_name@ */
1883 sizeof(gcaeaddec_pyobj), /* @tp_basicsize@ */
1884 0, /* @tp_itemsize@ */
1885
1886 0, /* @tp_dealloc@ */
1887 0, /* @tp_print@ */
1888 0, /* @tp_getattr@ */
1889 0, /* @tp_setattr@ */
1890 0, /* @tp_compare@ */
1891 0, /* @tp_repr@ */
1892 0, /* @tp_as_number@ */
1893 0, /* @tp_as_sequence@ */
1894 0, /* @tp_as_mapping@ */
1895 0, /* @tp_hash@ */
1896 0, /* @tp_call@ */
1897 0, /* @tp_str@ */
1898 0, /* @tp_getattro@ */
1899 0, /* @tp_setattro@ */
1900 0, /* @tp_as_buffer@ */
1901 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1902 Py_TPFLAGS_BASETYPE,
1903
1904 /* @tp_doc@ */
d96c882e 1905 "Authenticated decryption operation metaclass.",
bebf03ab
MW		 1906
1907 0, /* @tp_traverse@ */
1908 0, /* @tp_clear@ */
1909 0, /* @tp_richcompare@ */
1910 0, /* @tp_weaklistoffset@ */
1911 0, /* @tp_iter@ */
1912 0, /* @tp_iternext@ */
1913 0, /* @tp_methods@ */
1914 0, /* @tp_members@ */
1915 0, /* @tp_getset@ */
1916 0, /* @tp_base@ */
1917 0, /* @tp_dict@ */
1918 0, /* @tp_descr_get@ */
1919 0, /* @tp_descr_set@ */
1920 0, /* @tp_dictoffset@ */
1921 0, /* @tp_init@ */
1922 PyType_GenericAlloc, /* @tp_alloc@ */
1923 abstract_pynew, /* @tp_new@ */
1924 0, /* @tp_free@ */
1925 0 /* @tp_is_gc@ */
1926};
1927
c263b05c 1928static const PyTypeObject gaeaddec_pytype_skel = {
591bf41b 1929 PyVarObject_HEAD_INIT(0, 0) /* Header */
bebf03ab
MW		 1930 "GAEDec", /* @tp_name@ */
1931 sizeof(gaeaddec_pyobj), /* @tp_basicsize@ */
1932 0, /* @tp_itemsize@ */
1933
1934 gaeaddec_pydealloc, /* @tp_dealloc@ */
1935 0, /* @tp_print@ */
1936 0, /* @tp_getattr@ */
1937 0, /* @tp_setattr@ */
1938 0, /* @tp_compare@ */
1939 0, /* @tp_repr@ */
1940 0, /* @tp_as_number@ */
1941 0, /* @tp_as_sequence@ */
1942 0, /* @tp_as_mapping@ */
1943 0, /* @tp_hash@ */
1944 0, /* @tp_call@ */
1945 0, /* @tp_str@ */
1946 0, /* @tp_getattro@ */
1947 0, /* @tp_setattro@ */
1948 0, /* @tp_as_buffer@ */
1949 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1950 Py_TPFLAGS_BASETYPE,
1951
1952 /* @tp_doc@ */
d96c882e 1953 "Authenticated decryption operation.",
bebf03ab
MW		 1954
1955 0, /* @tp_traverse@ */
1956 0, /* @tp_clear@ */
1957 0, /* @tp_richcompare@ */
1958 0, /* @tp_weaklistoffset@ */
1959 0, /* @tp_iter@ */
1960 0, /* @tp_iternext@ */
c90f712e 1961 PYMETHODS(gaeaddec), /* @tp_methods@ */
bebf03ab 1962 0, /* @tp_members@ */
c90f712e 1963 PYGETSET(gaeaddec), /* @tp_getset@ */
bebf03ab
MW		 1964 0, /* @tp_base@ */
1965 0, /* @tp_dict@ */
1966 0, /* @tp_descr_get@ */
1967 0, /* @tp_descr_set@ */
1968 0, /* @tp_dictoffset@ */
1969 0, /* @tp_init@ */
1970 PyType_GenericAlloc, /* @tp_alloc@ */
1971 abstract_pynew, /* @tp_new@ */
1972 0, /* @tp_free@ */
1973 0 /* @tp_is_gc@ */
1974};
1975
d7ab1bab 1976/*----- Hash functions ----------------------------------------------------*/
1977
c6e89d48
MW		 1978PyTypeObject *gchash_pytype;
1979static PyTypeObject *ghash_pytype;
1980PyObject *sha_pyobj, *has160_pyobj;
1981
1982typedef struct ghash_pyobj {
1983 PyObject_HEAD
1984 ghash *h;
1985} ghash_pyobj;
1986
1987#define GHASH_PYCHECK(o) PyObject_TypeCheck((o), ghash_pytype)
1988#define GHASH_H(o) (((ghash_pyobj *)(o))->h)
d7ab1bab 1989
1990CONVFUNC(gchash, gchash *, GCHASH_CH)
1991CONVFUNC(ghash, ghash *, GHASH_H)
1992
1993static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1994{
827f89d7
MW		 1995 static const char *const kwlist[] = { 0 };
1996 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST))
d7ab1bab 1997 goto end;
c41d0371 1998 return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty))));
d7ab1bab 1999end:
b2687a0a 2000 return (0);
d7ab1bab 2001}
2002
c6e89d48 2003static PyObject *gchash_pywrap(gchash *ch)
d7ab1bab 2004{
df9f8366 2005 gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name);
d7ab1bab 2006 g->ch = ch;
24b3d57b
MW		 2007 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
2008 g->ty.ht_type.tp_base = ghash_pytype;
d7ab1bab 2009 Py_INCREF(ghash_pytype);
24b3d57b
MW		 2010 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2011 Py_TPFLAGS_BASETYPE |
2012 Py_TPFLAGS_HEAPTYPE);
2013 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2014 g->ty.ht_type.tp_free = 0;
2015 g->ty.ht_type.tp_new = ghash_pynew;
dc075750 2016 typeready(&g->ty.ht_type);
d7ab1bab 2017 return ((PyObject *)g);
2018}
2019
c41d0371 2020PyObject *ghash_pywrap(PyObject *cobj, ghash *h)
d7ab1bab 2021{
2022 ghash_pyobj *g;
2023 if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h));
2024 else Py_INCREF(cobj);
2025 g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj);
2026 g->h = h;
b2687a0a 2027 return ((PyObject *)g);
d7ab1bab 2028}
2029
2030static void ghash_pydealloc(PyObject *me)
2031{
c41d0371 2032 GH_DESTROY(GHASH_H(me));
2a448f86 2033 Py_DECREF(Py_TYPE(me));
3aa33042 2034 FREEOBJ(me);
d7ab1bab 2035}
2036
2037static PyObject *gchget_name(PyObject *me, void *hunoz)
2135a6d3 2038 { return (TEXT_FROMSTR(GCHASH_CH(me)->name)); }
d7ab1bab 2039
2040static PyObject *gchget_hashsz(PyObject *me, void *hunoz)
2041 { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); }
2042
2043static PyObject *gchget_bufsz(PyObject *me, void *hunoz)
2044 { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); }
2045
91e56f06 2046static PyObject *ghmeth_copy(PyObject *me)
2a448f86 2047 { return (ghash_pywrap((PyObject *)Py_TYPE(me), GH_COPY(GHASH_H(me)))); }
cfe80e51 2048
d7ab1bab 2049static PyObject *ghmeth_hash(PyObject *me, PyObject *arg)
2050{
21684137
MW		 2051 struct bin m = BIN_INIT;
2052 PyObject *rc = 0;
2053
2054 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &m)) goto end;
67c75893 2055 GH_HASH(GHASH_H(me), m.p, m.sz);
21684137
MW		 2056 rc = me; Py_INCREF(rc);
2057end:
2058 freebin(&m);
2059 return (rc);
d7ab1bab 2060}
2061
46e6ad89 2062#define GHMETH_HASHU_(n, W, w) \
2063 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
2064 { \
2065 uint##n x; \
21684137 2066 \
0e5c668c 2067 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
46e6ad89 2068 GH_HASHU##W(GHASH_H(me), x); \
2069 RETURN_ME; \
46e6ad89 2070 }
2071DOUINTCONV(GHMETH_HASHU_)
2072
2073#define GHMETH_HASHBUF_(n, W, w) \
2074 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
2075 { \
21684137
MW		 2076 struct bin in = BIN_INIT; \
2077 PyObject *rc = 0; \
2078 \
67c75893 2079 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 2080 if (in.sz > MASK##n) VALERR("too large"); \
67c75893 2081 GH_HASHBUF##W(GHASH_H(me), in.p, in.sz); \
21684137 2082 rc = me; Py_INCREF(rc); \
46e6ad89 2083 end: \
21684137 2084 freebin(&in); \
46e6ad89 2085 return (0); \
2086 }
2087DOUINTCONV(GHMETH_HASHBUF_)
2088
2089static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
2090{
2091 char *p;
2092 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
2093 GH_HASHSTRZ(GHASH_H(me), p);
2094 RETURN_ME;
2095}
2096
91e56f06 2097static PyObject *ghmeth_done(PyObject *me)
07bcd768
MW		 2098{
2099 ghash *g;
2100 PyObject *rc;
07bcd768
MW		 2101 g = GH_COPY(GHASH_H(me));
2102 rc = bytestring_pywrap(0, g->ops->c->hashsz);
2135a6d3 2103 GH_DONE(g, BIN_PTR(rc));
07bcd768
MW		 2104 GH_DESTROY(g);
2105 return (rc);
2106}
2107
c90f712e 2108static const PyGetSetDef gchash_pygetset[] = {
07bcd768 2109#define GETSETNAME(op, name) gch##op##_##name
d96c882e
MW		 2110 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
2111 GET (hashsz, "CH.hashsz -> hash output size")
2112 GET (name, "CH.name -> name of this kind of hash")
07bcd768
MW		 2113#undef GETSETNAME
2114 { 0 }
2115};
2116
c90f712e 2117static const PyMethodDef ghash_pymethods[] = {
d7ab1bab 2118#define METHNAME(name) ghmeth_##name
91e56f06 2119 NAMETH(copy, "H.copy() -> HH")
d96c882e 2120 METH (hash, "H.hash(M)")
46e6ad89 2121#define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
2122 DOUINTCONV(METHU_)
07bcd768 2123#undef METHU_
46e6ad89 2124#define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
2125 DOUINTCONV(METHBUF_)
07bcd768 2126#undef METHBUF_
d96c882e 2127 METH (hashstrz, "H.hashstrz(STRING)")
91e56f06 2128 NAMETH(done, "H.done() -> HASH")
d7ab1bab 2129#undef METHNAME
2130 { 0 }
2131};
2132
c263b05c 2133static const PyTypeObject gchash_pytype_skel = {
591bf41b 2134 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2135 "GCHash", /* @tp_name@ */
d7ab1bab 2136 sizeof(gchash_pyobj), /* @tp_basicsize@ */
2137 0, /* @tp_itemsize@ */
2138
2139 0, /* @tp_dealloc@ */
2140 0, /* @tp_print@ */
2141 0, /* @tp_getattr@ */
2142 0, /* @tp_setattr@ */
2143 0, /* @tp_compare@ */
2144 0, /* @tp_repr@ */
2145 0, /* @tp_as_number@ */
2146 0, /* @tp_as_sequence@ */
2147 0, /* @tp_as_mapping@ */
2148 0, /* @tp_hash@ */
2149 0, /* @tp_call@ */
2150 0, /* @tp_str@ */
2151 0, /* @tp_getattro@ */
2152 0, /* @tp_setattro@ */
2153 0, /* @tp_as_buffer@ */
2154 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2155 Py_TPFLAGS_BASETYPE,
2156
2157 /* @tp_doc@ */
d96c882e 2158 "Hash function metaclass.",
d7ab1bab 2159
2160 0, /* @tp_traverse@ */
2161 0, /* @tp_clear@ */
2162 0, /* @tp_richcompare@ */
2163 0, /* @tp_weaklistoffset@ */
2164 0, /* @tp_iter@ */
963a6148 2165 0, /* @tp_iternext@ */
d7ab1bab 2166 0, /* @tp_methods@ */
2167 0, /* @tp_members@ */
c90f712e 2168 PYGETSET(gchash), /* @tp_getset@ */
d7ab1bab 2169 0, /* @tp_base@ */
2170 0, /* @tp_dict@ */
2171 0, /* @tp_descr_get@ */
2172 0, /* @tp_descr_set@ */
2173 0, /* @tp_dictoffset@ */
2174 0, /* @tp_init@ */
2175 PyType_GenericAlloc, /* @tp_alloc@ */
2176 abstract_pynew, /* @tp_new@ */
3aa33042 2177 0, /* @tp_free@ */
d7ab1bab 2178 0 /* @tp_is_gc@ */
2179};
2180
c263b05c 2181static const PyTypeObject ghash_pytype_skel = {
591bf41b 2182 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2183 "GHash", /* @tp_name@ */
d7ab1bab 2184 sizeof(ghash_pyobj), /* @tp_basicsize@ */
2185 0, /* @tp_itemsize@ */
2186
2187 ghash_pydealloc, /* @tp_dealloc@ */
2188 0, /* @tp_print@ */
2189 0, /* @tp_getattr@ */
2190 0, /* @tp_setattr@ */
2191 0, /* @tp_compare@ */
2192 0, /* @tp_repr@ */
2193 0, /* @tp_as_number@ */
2194 0, /* @tp_as_sequence@ */
2195 0, /* @tp_as_mapping@ */
2196 0, /* @tp_hash@ */
2197 0, /* @tp_call@ */
2198 0, /* @tp_str@ */
2199 0, /* @tp_getattro@ */
2200 0, /* @tp_setattro@ */
2201 0, /* @tp_as_buffer@ */
2202 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2203 Py_TPFLAGS_BASETYPE,
2204
2205 /* @tp_doc@ */
d96c882e 2206 "Hash function, abstract base class.",
d7ab1bab 2207
2208 0, /* @tp_traverse@ */
2209 0, /* @tp_clear@ */
2210 0, /* @tp_richcompare@ */
2211 0, /* @tp_weaklistoffset@ */
2212 0, /* @tp_iter@ */
963a6148 2213 0, /* @tp_iternext@ */
c90f712e 2214 PYMETHODS(ghash), /* @tp_methods@ */
d7ab1bab 2215 0, /* @tp_members@ */
2216 0, /* @tp_getset@ */
2217 0, /* @tp_base@ */
2218 0, /* @tp_dict@ */
2219 0, /* @tp_descr_get@ */
2220 0, /* @tp_descr_set@ */
2221 0, /* @tp_dictoffset@ */
2222 0, /* @tp_init@ */
2223 PyType_GenericAlloc, /* @tp_alloc@ */
2224 abstract_pynew, /* @tp_new@ */
3aa33042 2225 0, /* @tp_free@ */
d7ab1bab 2226 0 /* @tp_is_gc@ */
2227};
2228
2229/*----- Message authentication --------------------------------------------*/
2230
c6e89d48 2231static PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
d7ab1bab 2232
c6e89d48
MW		 2233typedef struct gcmac_pyobj {
2234 PyHeapTypeObject ty;
2235 gcmac *cm;
2236} gcmac_pyobj;
2237
2238#define GCMAC_PYCHECK(o) PyObject_TypeCheck((o), gcmac_pytype)
2239#define GCMAC_CM(o) (((gcmac_pyobj *)(o))->cm)
2240#define GCMAC_F(o) (((gcmac_pyobj *)(o))->f)
d7ab1bab 2241CONVFUNC(gcmac, gcmac *, GCMAC_CM)
c6e89d48
MW		 2242static PyObject *gmac_pywrap(PyObject *, gmac *);
2243
2244typedef struct gmac_pyobj {
2245 PyHeapTypeObject ty;
2246 gmac *m;
2247} gmac_pyobj;
2248
2249extern PyTypeObject *gmac_pytype;
2250#define GMAC_PYCHECK(o) PyObject_TypeCheck((o), gmac_pytype)
2251#define GMAC_M(o) (((gmac_pyobj *)(o))->m)
2252#define GMAC_F(o) (((gmac_pyobj *)(o))->f)
2253extern PyObject *gmac_pywrap(PyObject *, gmac *);
2254extern int convgmac(PyObject *, void *);
d7ab1bab 2255
2256static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
2257{
827f89d7 2258 static const char *const kwlist[] = { "k", 0 };
21684137
MW		 2259 struct bin k = BIN_INIT;
2260 PyObject *rc = 0;
d7ab1bab 2261
67c75893 2262 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
d7ab1bab 2263 goto end;
67c75893 2264 if (keysz(k.sz, GCMAC_CM(ty)->keysz) != k.sz) VALERR("bad key length");
21684137 2265 rc = gmac_pywrap((PyObject *)ty, GM_KEY(GCMAC_CM(ty), k.p, k.sz));
d7ab1bab 2266end:
21684137 2267 freebin(&k);
b2687a0a 2268 return (0);
d7ab1bab 2269}
2270
2271static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
2272{
827f89d7 2273 static const char *const kwlist[] = { 0 };
d7ab1bab 2274 ghash_pyobj *g;
2275
827f89d7 2276 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) return (0);
d7ab1bab 2277 g = PyObject_NEW(ghash_pyobj, ty);
2278 g->h = GM_INIT(GMAC_M(ty));
d7ab1bab 2279 Py_INCREF(ty);
2280 return ((PyObject *)g);
2281}
2282
c6e89d48 2283static PyObject *gcmac_pywrap(gcmac *cm)
d7ab1bab 2284{
df9f8366 2285 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
d7ab1bab 2286 g->cm = cm;
24b3d57b
MW		 2287 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
2288 g->ty.ht_type.tp_base = gmac_pytype;
d7ab1bab 2289 Py_INCREF(gmac_pytype);
24b3d57b
MW		 2290 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2291 Py_TPFLAGS_BASETYPE |
2292 Py_TPFLAGS_HEAPTYPE);
2293 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2294 g->ty.ht_type.tp_free = 0;
2295 g->ty.ht_type.tp_new = gmac_pynew;
dc075750 2296 typeready(&g->ty.ht_type);
d7ab1bab 2297 return ((PyObject *)g);
2298}
2299
c6e89d48 2300static PyObject *gmac_pywrap(PyObject *cobj, gmac *m)
d7ab1bab 2301{
2302 gmac_pyobj *g;
2303 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
2304 else Py_INCREF(cobj);
df9f8366 2305 g = newtype((PyTypeObject *)cobj, 0, 0);
828b1388 2306 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
2135a6d3
MW		 2307 g->ty.ht_name = TEXT_FORMAT("%s(keyed)", m->ops->c->name);
2308 g->ty.ht_type.tp_name = TEXT_PTR(g->ty.ht_name);
24b3d57b 2309 g->ty.ht_type.tp_base = gmhash_pytype;
d7ab1bab 2310 Py_INCREF(gmac_pytype);
24b3d57b
MW		 2311 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2312 Py_TPFLAGS_BASETYPE |
2313 Py_TPFLAGS_HEAPTYPE);
2314 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2315 g->ty.ht_type.tp_free = 0;
2316 g->ty.ht_type.tp_new = gmhash_pynew;
dc075750 2317 typeready(&g->ty.ht_type);
d7ab1bab 2318 g->m = m;
b2687a0a 2319 return ((PyObject *)g);
d7ab1bab 2320}
2321
2322static void gmac_pydealloc(PyObject *me)
2323{
c41d0371 2324 GM_DESTROY(GMAC_M(me));
2a448f86 2325 Py_DECREF(Py_TYPE(me));
d7ab1bab 2326 PyType_Type.tp_dealloc(me);
2327}
2328
2329static PyObject *gcmget_name(PyObject *me, void *hunoz)
2135a6d3 2330 { return (TEXT_FROMSTR(GCMAC_CM(me)->name)); }
d7ab1bab 2331
2332static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
2333 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
2334
2335static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
2336 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
2337
c90f712e 2338static const PyGetSetDef gcmac_pygetset[] = {
d7ab1bab 2339#define GETSETNAME(op, name) gcm##op##_##name
d96c882e
MW		 2340 GET (keysz, "CM.keysz -> acceptable key sizes")
2341 GET (tagsz, "CM.tagsz -> MAC output size")
2342 GET (name, "CM.name -> name of this kind of MAC")
d7ab1bab 2343#undef GETSETNAME
2344 { 0 }
2345};
2346
71574cba
MW		 2347static PyObject *gmget_name(PyObject *me, void *hunoz)
2348 { return (TEXT_FROMSTR(GMAC_M(me)->ops->c->name)); }
2349
2350static PyObject *gmget_hashsz(PyObject *me, void *hunoz)
2351 { return (PyInt_FromLong(GMAC_M(me)->ops->c->hashsz)); }
2352#define gmget_tagsz gmget_hashsz
2353
2354static const PyGetSetDef gmac_pygetset[] = {
2355#define GETSETNAME(op, name) gm##op##_##name
2356 GET (hashsz, "M.hashsz -> MAC output size")
2357 GET (tagsz, "M.tagsz -> MAC output size")
2358 GET (name, "M.name -> name of this kind of MAC")
2359#undef GETSETNAME
2360 { 0 }
2361};
2362
c263b05c 2363static const PyTypeObject gcmac_pytype_skel = {
591bf41b 2364 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2365 "GCMAC", /* @tp_name@ */
d7ab1bab 2366 sizeof(gchash_pyobj), /* @tp_basicsize@ */
2367 0, /* @tp_itemsize@ */
2368
2369 0, /* @tp_dealloc@ */
2370 0, /* @tp_print@ */
2371 0, /* @tp_getattr@ */
2372 0, /* @tp_setattr@ */
2373 0, /* @tp_compare@ */
2374 0, /* @tp_repr@ */
2375 0, /* @tp_as_number@ */
2376 0, /* @tp_as_sequence@ */
2377 0, /* @tp_as_mapping@ */
2378 0, /* @tp_hash@ */
2379 0, /* @tp_call@ */
2380 0, /* @tp_str@ */
2381 0, /* @tp_getattro@ */
2382 0, /* @tp_setattro@ */
2383 0, /* @tp_as_buffer@ */
2384 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2385 Py_TPFLAGS_BASETYPE,
2386
2387 /* @tp_doc@ */
d96c882e 2388 "Message authentication code metametaclass.",
d7ab1bab 2389
2390 0, /* @tp_traverse@ */
2391 0, /* @tp_clear@ */
2392 0, /* @tp_richcompare@ */
2393 0, /* @tp_weaklistoffset@ */
2394 0, /* @tp_iter@ */
963a6148 2395 0, /* @tp_iternext@ */
d7ab1bab 2396 0, /* @tp_methods@ */
2397 0, /* @tp_members@ */
c90f712e 2398 PYGETSET(gcmac), /* @tp_getset@ */
d7ab1bab 2399 0, /* @tp_base@ */
2400 0, /* @tp_dict@ */
2401 0, /* @tp_descr_get@ */
2402 0, /* @tp_descr_set@ */
2403 0, /* @tp_dictoffset@ */
2404 0, /* @tp_init@ */
2405 PyType_GenericAlloc, /* @tp_alloc@ */
2406 abstract_pynew, /* @tp_new@ */
3aa33042 2407 0, /* @tp_free@ */
d7ab1bab 2408 0 /* @tp_is_gc@ */
2409};
2410
c263b05c 2411static const PyTypeObject gmac_pytype_skel = {
591bf41b 2412 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2413 "GMAC", /* @tp_name@ */
d7ab1bab 2414 sizeof(gmac_pyobj), /* @tp_basicsize@ */
2415 0, /* @tp_itemsize@ */
2416
2417 gmac_pydealloc, /* @tp_dealloc@ */
2418 0, /* @tp_print@ */
2419 0, /* @tp_getattr@ */
2420 0, /* @tp_setattr@ */
2421 0, /* @tp_compare@ */
2422 0, /* @tp_repr@ */
2423 0, /* @tp_as_number@ */
2424 0, /* @tp_as_sequence@ */
2425 0, /* @tp_as_mapping@ */
2426 0, /* @tp_hash@ */
2427 0, /* @tp_call@ */
2428 0, /* @tp_str@ */
2429 0, /* @tp_getattro@ */
2430 0, /* @tp_setattro@ */
2431 0, /* @tp_as_buffer@ */
2432 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2433 Py_TPFLAGS_BASETYPE,
2434
2435 /* @tp_doc@ */
d96c882e 2436 "Message authentication code metaclass, abstract base class.",
d7ab1bab 2437
2438 0, /* @tp_traverse@ */
2439 0, /* @tp_clear@ */
2440 0, /* @tp_richcompare@ */
2441 0, /* @tp_weaklistoffset@ */
2442 0, /* @tp_iter@ */
963a6148 2443 0, /* @tp_iternext@ */
d7ab1bab 2444 0, /* @tp_methods@ */
2445 0, /* @tp_members@ */
71574cba 2446 PYGETSET(gmac), /* @tp_getset@ */
d7ab1bab 2447 0, /* @tp_base@ */
2448 0, /* @tp_dict@ */
2449 0, /* @tp_descr_get@ */
2450 0, /* @tp_descr_set@ */
2451 0, /* @tp_dictoffset@ */
2452 0, /* @tp_init@ */
2453 PyType_GenericAlloc, /* @tp_alloc@ */
2454 abstract_pynew, /* @tp_new@ */
3aa33042 2455 0, /* @tp_free@ */
d7ab1bab 2456 0 /* @tp_is_gc@ */
2457};
2458
c263b05c 2459static const PyTypeObject gmhash_pytype_skel = {
591bf41b 2460 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 2461 "GMACHash", /* @tp_name@ */
d7ab1bab 2462 sizeof(ghash_pyobj), /* @tp_basicsize@ */
2463 0, /* @tp_itemsize@ */
2464
2465 ghash_pydealloc, /* @tp_dealloc@ */
2466 0, /* @tp_print@ */
2467 0, /* @tp_getattr@ */
2468 0, /* @tp_setattr@ */
2469 0, /* @tp_compare@ */
2470 0, /* @tp_repr@ */
2471 0, /* @tp_as_number@ */
2472 0, /* @tp_as_sequence@ */
2473 0, /* @tp_as_mapping@ */
2474 0, /* @tp_hash@ */
2475 0, /* @tp_call@ */
2476 0, /* @tp_str@ */
2477 0, /* @tp_getattro@ */
2478 0, /* @tp_setattro@ */
2479 0, /* @tp_as_buffer@ */
2480 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2481 Py_TPFLAGS_BASETYPE,
2482
2483 /* @tp_doc@ */
d96c882e 2484 "Message authentication code, abstract base class.",
d7ab1bab 2485
2486 0, /* @tp_traverse@ */
2487 0, /* @tp_clear@ */
2488 0, /* @tp_richcompare@ */
2489 0, /* @tp_weaklistoffset@ */
2490 0, /* @tp_iter@ */
963a6148 2491 0, /* @tp_iternext@ */
d7ab1bab 2492 0, /* @tp_methods@ */
2493 0, /* @tp_members@ */
2494 0, /* @tp_getset@ */
2495 0, /* @tp_base@ */
2496 0, /* @tp_dict@ */
2497 0, /* @tp_descr_get@ */
2498 0, /* @tp_descr_set@ */
2499 0, /* @tp_dictoffset@ */
2500 0, /* @tp_init@ */
2501 PyType_GenericAlloc, /* @tp_alloc@ */
2502 abstract_pynew, /* @tp_new@ */
3aa33042 2503 0, /* @tp_free@ */
d7ab1bab 2504 0 /* @tp_is_gc@ */
2505};
2506
204d480b
MW		 2507/*----- Special snowflake for Poly1305 ------------------------------------*/
2508
2509PyTypeObject *poly1305cls_pytype, *poly1305key_pytype, *poly1305hash_pytype;
2510
2511typedef struct poly1305key_pyobj {
2512 PyHeapTypeObject ty;
2513 poly1305_key k;
2514} poly1305key_pyobj;
2515
2516typedef struct poly1305hash_pyobj {
2517 PyObject_HEAD
2518 unsigned f;
2519#define f_mask 1u
2520 poly1305_ctx ctx;
2521} poly1305hash_pyobj;
2522
2523#define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
2524#define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
2525CONVFUNC(poly1305hash, poly1305_ctx *, P1305_CTX)
2526
2527static PyObject *poly1305hash_pynew(PyTypeObject *ty,
2528 PyObject *arg, PyObject *kw)
2529{
827f89d7 2530 static const char *const kwlist[] = { "mask", 0 };
204d480b
MW		 2531 poly1305key_pyobj *pk = (poly1305key_pyobj *)ty;
2532 poly1305hash_pyobj *ph;
21684137
MW		 2533 PyObject *rc = 0;
2534 struct bin m = BIN_INIT;
204d480b 2535
67c75893 2536 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convbin, &m))
21684137 2537 goto end;
67c75893 2538 if (m.p && m.sz != POLY1305_MASKSZ) VALERR("bad mask length");
204d480b
MW		 2539 ph = PyObject_NEW(poly1305hash_pyobj, ty);
2540 ph->f = 0;
67c75893
MW		 2541 if (m.p) ph->f |= f_mask;
2542 poly1305_macinit(&ph->ctx, &pk->k, m.p);
204d480b 2543 Py_INCREF(ty);
21684137 2544 rc = (PyObject *)ph;
204d480b 2545end:
21684137
MW		 2546 freebin(&m);
2547 return (rc);
204d480b
MW		 2548}
2549
2550static PyObject *poly1305key_pynew(PyTypeObject *ty,
2551 PyObject *arg, PyObject *kw)
2552{
827f89d7 2553 static const char *const kwlist[] = { "k", 0 };
204d480b 2554 poly1305key_pyobj *pk;
21684137
MW		 2555 struct bin k = BIN_INIT;
2556 PyObject *rc = 0;
204d480b 2557
67c75893 2558 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
204d480b 2559 goto end;
67c75893 2560 if (keysz(k.sz, poly1305_keysz) != k.sz) VALERR("bad key length");
204d480b
MW		 2561
2562 pk = newtype(ty, 0, 0);
2135a6d3 2563 pk->ty.ht_name = TEXT_FROMSTR("poly1305(keyed)");
204d480b 2564 pk->ty.ht_type.tp_basicsize = sizeof(poly1305hash_pyobj);
2135a6d3 2565 pk->ty.ht_type.tp_name = TEXT_PTR(pk->ty.ht_name);
204d480b
MW		 2566 pk->ty.ht_type.tp_base = poly1305hash_pytype;
2567 Py_INCREF(poly1305key_pytype);
2568 pk->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2569 Py_TPFLAGS_BASETYPE |
2570 Py_TPFLAGS_HEAPTYPE);
2571 pk->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2572 pk->ty.ht_type.tp_free = 0;
2573 pk->ty.ht_type.tp_new = poly1305hash_pynew;
2574 typeready(&pk->ty.ht_type);
2575
67c75893 2576 poly1305_keyinit(&pk->k, k.p, k.sz);
21684137 2577 rc = (PyObject *)pk;
204d480b 2578end:
21684137
MW		 2579 freebin(&k);
2580 return (rc);
204d480b
MW		 2581}
2582
2583static PyObject *poly1305clsget_name(PyObject *me, void *hunoz)
2135a6d3 2584 { return (TEXT_FROMSTR("poly1305")); }
204d480b
MW		 2585
2586static PyObject *poly1305clsget_keysz(PyObject *me, void *hunoz)
2587 { return (keysz_pywrap(poly1305_keysz)); }
2588
2589static PyObject *poly1305clsget_masksz(PyObject *me, void *hunoz)
2590 { return (PyInt_FromLong(POLY1305_MASKSZ)); }
2591
2592static PyObject *poly1305clsget_tagsz(PyObject *me, void *hunoz)
2593 { return (PyInt_FromLong(POLY1305_TAGSZ)); }
2594
91e56f06 2595static PyObject *polymeth_copy(PyObject *me)
204d480b
MW		 2596{
2597 poly1305hash_pyobj *ph;
2a448f86 2598 ph = PyObject_NEW(poly1305hash_pyobj, Py_TYPE(me));
204d480b 2599 poly1305_copy(&ph->ctx, P1305_CTX(me));
2a448f86 2600 Py_INCREF(Py_TYPE(me));
204d480b
MW		 2601 return ((PyObject *)ph);
2602}
2603
2604static PyObject *polymeth_hash(PyObject *me, PyObject *arg)
2605{
21684137
MW		 2606 struct bin m = BIN_INIT;
2607 PyObject *rc = 0;
2608
2609 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &m)) goto end;
67c75893 2610 poly1305_hash(P1305_CTX(me), m.p, m.sz);
21684137
MW		 2611 rc = me; Py_INCREF(rc);
2612end:
2613 freebin(&m);
2614 return (rc);
204d480b
MW		 2615}
2616
2617#define POLYMETH_HASHU_(n, W, w) \
2618 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
2619 { \
2620 uint##n x; \
2621 octet b[SZ_##W]; \
21684137 2622 \
0e5c668c 2623 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
0c87e818 2624 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
204d480b 2625 RETURN_ME; \
204d480b
MW		 2626 }
2627DOUINTCONV(POLYMETH_HASHU_)
2628
2629#define POLYMETH_HASHBUF_(n, W, w) \
2630 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
2631 { \
21684137 2632 struct bin in = BIN_INIT; \
204d480b 2633 octet b[SZ_##W]; \
21684137
MW		 2634 PyObject *rc = 0; \
2635 \
67c75893 2636 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 2637 if (in.sz > MASK##n) VALERR("too large"); \
67c75893
MW		 2638 STORE##W(b, in.sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
2639 poly1305_hash(P1305_CTX(me), in.p, in.sz); \
21684137 2640 rc = me; Py_INCREF(rc); \
204d480b 2641 end: \
21684137
MW		 2642 freebin(&in); \
2643 return (rc); \
204d480b
MW		 2644 }
2645DOUINTCONV(POLYMETH_HASHBUF_)
2646
2647static PyObject *polymeth_hashstrz(PyObject *me, PyObject *arg)
2648{
2649 char *p;
2650 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
2651 poly1305_hash(P1305_CTX(me), p, strlen(p) + 1);
2652 RETURN_ME;
2653}
2654
91e56f06
MW		 2655static PyObject *polymeth_flush(PyObject *me)
2656 { poly1305_flush(P1305_CTX(me)); RETURN_ME; }
204d480b 2657
91e56f06
MW		 2658static PyObject *polymeth_flushzero(PyObject *me)
2659 { poly1305_flushzero(P1305_CTX(me)); RETURN_ME; }
5c17375a 2660
204d480b
MW		 2661static PyObject *polymeth_concat(PyObject *me, PyObject *arg)
2662{
2663 PyObject *pre, *suff;
2664 if (!PyArg_ParseTuple(arg, "OO:concat", &pre, &suff)) return (0);
2665 if (!PyObject_TypeCheck(pre, poly1305hash_pytype) ||
2666 !PyObject_TypeCheck(suff, poly1305hash_pytype))
2667 TYERR("wanted a poly1305hash");
2a448f86 2668 if (Py_TYPE(me) != Py_TYPE(pre) || Py_TYPE(me) != Py_TYPE(suff))
204d480b
MW		 2669 TYERR("key mismatch");
2670 if (P1305_CTX(pre)->nbuf) VALERR("prefix is not block-aligned");
2671 poly1305_concat(P1305_CTX(me), P1305_CTX(pre), P1305_CTX(suff));
2672 RETURN_ME;
2673end:
2674 return (0);
2675}
2676
91e56f06 2677static PyObject *polymeth_done(PyObject *me)
204d480b
MW		 2678{
2679 PyObject *rc;
204d480b
MW		 2680 if (!(P1305_F(me) & f_mask)) VALERR("no mask");
2681 rc = bytestring_pywrap(0, POLY1305_TAGSZ);
2135a6d3 2682 poly1305_done(P1305_CTX(me), BIN_PTR(rc));
204d480b
MW		 2683 return (rc);
2684end:
2685 return (0);
2686}
2687
c90f712e 2688static const PyGetSetDef poly1305cls_pygetset[] = {
204d480b 2689#define GETSETNAME(op, name) poly1305cls##op##_##name
d96c882e
MW		 2690 GET (keysz, "PC.keysz -> acceptable key sizes")
2691 GET (masksz, "PC.masksz -> mask size")
2692 GET (tagsz, "PC.tagsz -> MAC output size")
2693 GET (name, "PC.name -> name of this kind of MAC")
204d480b
MW		 2694#undef GETSETNAME
2695 { 0 }
2696};
2697
71574cba
MW		 2698static PyObject *poly1305get_name(PyObject *me, void *hunoz)
2699 { RETURN_OBJ(((PyHeapTypeObject *)poly1305key_pytype)->ht_name); }
2700
2701static PyObject *poly1305get_tagsz(PyObject *me, void *hunoz)
2702 { return (PyInt_FromLong(16)); }
2703
2704static const PyGetSetDef poly1305_pygetset[] = {
2705#define GETSETNAME(op, name) poly1305##op##_##name
2706 GET (tagsz, "PK.tagsz -> MAC output size")
2707 GET (name, "PK.name -> name of this kind of MAC")
2708#undef GETSETNAME
2709 { 0 }
2710};
2711
c90f712e 2712static const PyMethodDef poly1305hash_pymethods[] = {
204d480b 2713#define METHNAME(name) polymeth_##name
91e56f06 2714 NAMETH(copy, "P.copy() -> PP")
d96c882e 2715 METH (hash, "P.hash(M)")
204d480b
MW		 2716#define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
2717 DOUINTCONV(METHU_)
2718#undef METHU_
2719#define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
2720 DOUINTCONV(METHBUF_)
2721#undef METHBUF_
d96c882e 2722 METH (hashstrz, "P.hashstrz(STRING)")
91e56f06
MW		 2723 NAMETH(flush, "P.flush()")
2724 NAMETH(flushzero, "P.flushzero()")
d96c882e 2725 METH (concat, "P.concat(PREFIX, SUFFIX)")
91e56f06 2726 NAMETH(done, "P.done() -> TAG")
204d480b
MW		 2727#undef METHNAME
2728 { 0 }
2729};
2730
c263b05c 2731static const PyTypeObject poly1305cls_pytype_skel = {
591bf41b 2732 PyVarObject_HEAD_INIT(0, 0) /* Header */
2edb633e 2733 "_Poly1305Class", /* @tp_name@ */
204d480b
MW		 2734 sizeof(PyHeapTypeObject), /* @tp_basicsize@ */
2735 0, /* @tp_itemsize@ */
2736
2737 0, /* @tp_dealloc@ */
2738 0, /* @tp_print@ */
2739 0, /* @tp_getattr@ */
2740 0, /* @tp_setattr@ */
2741 0, /* @tp_compare@ */
2742 0, /* @tp_repr@ */
2743 0, /* @tp_as_number@ */
2744 0, /* @tp_as_sequence@ */
2745 0, /* @tp_as_mapping@ */
2746 0, /* @tp_hash@ */
2747 0, /* @tp_call@ */
2748 0, /* @tp_str@ */
2749 0, /* @tp_getattro@ */
2750 0, /* @tp_setattro@ */
2751 0, /* @tp_as_buffer@ */
2752 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2753 Py_TPFLAGS_BASETYPE,
2754
2755 /* @tp_doc@ */
d96c882e 2756 "Poly1305 metametaclass. Best not to ask.",
204d480b
MW		 2757
2758 0, /* @tp_traverse@ */
2759 0, /* @tp_clear@ */
2760 0, /* @tp_richcompare@ */
2761 0, /* @tp_weaklistoffset@ */
2762 0, /* @tp_iter@ */
2763 0, /* @tp_iternext@ */
2764 0, /* @tp_methods@ */
2765 0, /* @tp_members@ */
c90f712e 2766 PYGETSET(poly1305cls), /* @tp_getset@ */
204d480b
MW		 2767 0, /* @tp_base@ */
2768 0, /* @tp_dict@ */
2769 0, /* @tp_descr_get@ */
2770 0, /* @tp_descr_set@ */
2771 0, /* @tp_dictoffset@ */
2772 0, /* @tp_init@ */
2773 PyType_GenericAlloc, /* @tp_alloc@ */
2774 abstract_pynew, /* @tp_new@ */
2775 0, /* @tp_free@ */
2776 0 /* @tp_is_gc@ */
2777};
2778
c263b05c 2779static const PyTypeObject poly1305key_pytype_skel = {
591bf41b 2780 PyVarObject_HEAD_INIT(0, 0) /* Header */
204d480b
MW		 2781 "poly1305", /* @tp_name@ */
2782 sizeof(poly1305key_pyobj), /* @tp_basicsize@ */
2783 0, /* @tp_itemsize@ */
2784
2785 0, /* @tp_dealloc@ */
2786 0, /* @tp_print@ */
2787 0, /* @tp_getattr@ */
2788 0, /* @tp_setattr@ */
2789 0, /* @tp_compare@ */
2790 0, /* @tp_repr@ */
2791 0, /* @tp_as_number@ */
2792 0, /* @tp_as_sequence@ */
2793 0, /* @tp_as_mapping@ */
2794 0, /* @tp_hash@ */
2795 0, /* @tp_call@ */
2796 0, /* @tp_str@ */
2797 0, /* @tp_getattro@ */
2798 0, /* @tp_setattro@ */
2799 0, /* @tp_as_buffer@ */
2800 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2801 Py_TPFLAGS_BASETYPE,
2802
2803 /* @tp_doc@ */
d96c882e 2804 "poly1305(K): Poly1305 key.",
204d480b
MW		 2805
2806 0, /* @tp_traverse@ */
2807 0, /* @tp_clear@ */
2808 0, /* @tp_richcompare@ */
2809 0, /* @tp_weaklistoffset@ */
2810 0, /* @tp_iter@ */
2811 0, /* @tp_iternext@ */
2812 0, /* @tp_methods@ */
2813 0, /* @tp_members@ */
71574cba 2814 PYGETSET(poly1305), /* @tp_getset@ */
204d480b
MW		 2815 0, /* @tp_base@ */
2816 0, /* @tp_dict@ */
2817 0, /* @tp_descr_get@ */
2818 0, /* @tp_descr_set@ */
2819 0, /* @tp_dictoffset@ */
2820 0, /* @tp_init@ */
2821 PyType_GenericAlloc, /* @tp_alloc@ */
2822 poly1305key_pynew, /* @tp_new@ */
2823 0, /* @tp_free@ */
2824 0 /* @tp_is_gc@ */
2825};
2826
c263b05c 2827static const PyTypeObject poly1305hash_pytype_skel = {
591bf41b 2828 PyVarObject_HEAD_INIT(0, 0) /* Header */
204d480b
MW		 2829 "Poly1305Hash", /* @tp_name@ */
2830 sizeof(poly1305hash_pyobj), /* @tp_basicsize@ */
2831 0, /* @tp_itemsize@ */
2832
2833 0, /* @tp_dealloc@ */
2834 0, /* @tp_print@ */
2835 0, /* @tp_getattr@ */
2836 0, /* @tp_setattr@ */
2837 0, /* @tp_compare@ */
2838 0, /* @tp_repr@ */
2839 0, /* @tp_as_number@ */
2840 0, /* @tp_as_sequence@ */
2841 0, /* @tp_as_mapping@ */
2842 0, /* @tp_hash@ */
2843 0, /* @tp_call@ */
2844 0, /* @tp_str@ */
2845 0, /* @tp_getattro@ */
2846 0, /* @tp_setattro@ */
2847 0, /* @tp_as_buffer@ */
2848 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2849 Py_TPFLAGS_BASETYPE,
2850
2851 /* @tp_doc@ */
d96c882e 2852 "Poly1305 MAC context base class.",
204d480b
MW		 2853
2854 0, /* @tp_traverse@ */
2855 0, /* @tp_clear@ */
2856 0, /* @tp_richcompare@ */
2857 0, /* @tp_weaklistoffset@ */
2858 0, /* @tp_iter@ */
2859 0, /* @tp_iternext@ */
c90f712e 2860 PYMETHODS(poly1305hash), /* @tp_methods@ */
204d480b
MW		 2861 0, /* @tp_members@ */
2862 0, /* @tp_getset@ */
2863 0, /* @tp_base@ */
2864 0, /* @tp_dict@ */
2865 0, /* @tp_descr_get@ */
2866 0, /* @tp_descr_set@ */
2867 0, /* @tp_dictoffset@ */
2868 0, /* @tp_init@ */
2869 PyType_GenericAlloc, /* @tp_alloc@ */
2870 abstract_pynew, /* @tp_new@ */
2871 0, /* @tp_free@ */
2872 0 /* @tp_is_gc@ */
2873};
2874
a75e68c9
MW		 2875/*----- Special snowflake for HSalsa and HChaCha --------------------------*/
2876
2877#define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
2878 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
2879 { \
2880 dance##_ctx dance; \
21684137
MW		 2881 struct bin k = BIN_INIT, n = BIN_INIT; \
2882 PyObject *rc = 0; \
2883 \
67c75893
MW		 2884 if (!PyArg_ParseTuple(arg, "O&O&:" #hdance "_prf", \
2885 convbin, &k, convbin, &n)) \
a75e68c9 2886 goto end; \
67c75893
MW		 2887 if (k.sz != keysz(k.sz, dance##_keysz)) VALERR("bad key length"); \
2888 if (n.sz != HDANCE##_INSZ) VALERR("bad input length"); \
a75e68c9 2889 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
67c75893 2890 dance##_init(&dance, k.p, k.sz, 0); \
2135a6d3 2891 hdance##_prf(&dance, n.p, BIN_PTR(rc)); \
a75e68c9 2892 end: \
21684137
MW		 2893 freebin(&k); freebin(&n); \
2894 return (rc); \
a75e68c9
MW		 2895 }
2896
2897DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa20)
2898DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa2012)
2899DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa208)
2900
2901DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha20)
2902DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha12)
2903DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha8)
204d480b 2904
b35fdbe6
MW		 2905/*----- Keccak-p[1600, n] -------------------------------------------------*/
2906
2907static PyTypeObject *kxvik_pytype;
2908
2909typedef struct kxvik_pyobj {
2910 PyObject_HEAD
2911 keccak1600_state s;
2912 unsigned n;
2913} kxvik_pyobj;
2914
8d2dd9dc 2915static PyObject *kxvik_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
b35fdbe6
MW		 2916{
2917 unsigned n = 24;
2918 kxvik_pyobj *rc = 0;
827f89d7
MW		 2919 static const char *const kwlist[] = { "nround", 0 };
2920 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST,
b35fdbe6
MW		 2921 convuint, &n))
2922 goto end;
2923 rc = (kxvik_pyobj *)ty->tp_alloc(ty, 0);
2924 rc->n = n;
2925 keccak1600_init(&rc->s);
2926end:
2927 return ((PyObject *)rc);
2928}
2929
91e56f06 2930static PyObject *kxvikmeth_copy(PyObject *me)
cfe80e51
MW		 2931{
2932 kxvik_pyobj *k = (kxvik_pyobj *)me, *rc = 0;
2a448f86 2933 rc = (kxvik_pyobj *)Py_TYPE(k)->tp_alloc(Py_TYPE(k), 0);
cfe80e51 2934 rc->s = k->s; rc->n = k->n;
cfe80e51
MW		 2935 return ((PyObject *)rc);
2936}
2937
b35fdbe6
MW		 2938static PyObject *kxvikmeth_mix(PyObject *me, PyObject *arg)
2939{
2940 kxvik_pyobj *k = (kxvik_pyobj *)me;
2941 kludge64 t[25];
2942 const octet *q;
2943 octet buf[8];
2944 unsigned i;
21684137
MW		 2945 struct bin in = BIN_INIT;
2946 PyObject *rc = 0;
67c75893 2947 size_t n;
b35fdbe6 2948
67c75893
MW		 2949 if (!PyArg_ParseTuple(arg, "O&:mix", convbin, &in)) goto end;
2950 if (in.sz > 200) VALERR("out of range");
2951 q = in.p; n = in.sz;
b35fdbe6
MW		 2952 i = 0;
2953 while (n > 8) { LOAD64_L_(t[i], q); i++; q += 8; n -= 8; }
2954 if (n) {
2955 memcpy(buf, q, n); memset(buf + n, 0, 8 - n);
2956 LOAD64_L_(t[i], buf); i++;
2957 }
2958 keccak1600_mix(&k->s, t, i);
21684137 2959 rc = me; Py_INCREF(rc);
b35fdbe6 2960end:
21684137
MW		 2961 freebin(&in);
2962 return (rc);
b35fdbe6
MW		 2963}
2964
df0bd0f9
MW		 2965static PyObject *kxvikmeth_set(PyObject *me, PyObject *arg)
2966{
2967 kxvik_pyobj *k = (kxvik_pyobj *)me;
2968 kludge64 t[25];
2969 const octet *q;
2970 unsigned i;
21684137
MW		 2971 struct bin in = BIN_INIT;
2972 PyObject *rc = 0;
df0bd0f9
MW		 2973 size_t n;
2974
2975 if (!PyArg_ParseTuple(arg, "O&:set", convbin, &in)) goto end;
2976 if (in.sz > 200) VALERR("out of range");
2977 q = in.p; n = in.sz;
2978 i = 0;
2979 while (n >= 8) { LOAD64_L_(t[i], q); i++; q += 8; n -= 8; }
2980 if (n) VALERR("not 64-bit aligned");
2981 keccak1600_set(&k->s, t, i);
21684137 2982 rc = me; Py_INCREF(rc);
df0bd0f9 2983end:
21684137
MW		 2984 freebin(&in);
2985 return (rc);
df0bd0f9
MW		 2986}
2987
b35fdbe6
MW		 2988static PyObject *kxvikmeth_extract(PyObject *me, PyObject *arg)
2989{
2990 kxvik_pyobj *k = (kxvik_pyobj *)me;
2991 PyObject *rc = 0;
2992 kludge64 t[25];
2993 octet *q, buf[8];
2994 unsigned i;
2995 unsigned n;
2996
ae5dbbad 2997 if (!PyArg_ParseTuple(arg, "O&:extract", convuint, &n)) goto end;
b35fdbe6
MW		 2998 if (n > 200) VALERR("out of range");
2999 rc = bytestring_pywrap(0, n);
2135a6d3 3000 q = (octet *)BIN_PTR(rc);
b35fdbe6
MW		 3001 keccak1600_extract(&k->s, t, (n + 7)/8);
3002 i = 0;
3003 while (n > 8) { STORE64_L_(q, t[i]); i++; q += 8; n -= 8; }
3004 if (n) { STORE64_L_(buf, t[i]); memcpy(q, buf, n); }
3005end:
3006 return (rc);
3007}
3008
91e56f06 3009static PyObject *kxvikmeth_step(PyObject *me)
b35fdbe6
MW		 3010{
3011 kxvik_pyobj *k = (kxvik_pyobj *)me;
b35fdbe6
MW		 3012 keccak1600_p(&k->s, &k->s, k->n);
3013 RETURN_ME;
3014}
3015
8e923c68
MW		 3016static const PyMemberDef kxvik_pymembers[] = {
3017#define MEMBERSTRUCT kxvik_pyobj
3018 MEMRNM(nround, T_UINT, n, 0, "KECCAC.nround -> number of rounds")
3019#undef MEMBERSTRUCT
b35fdbe6
MW		 3020 { 0 }
3021};
3022
c90f712e 3023static const PyMethodDef kxvik_pymethods[] = {
b35fdbe6 3024#define METHNAME(func) kxvikmeth_##func
91e56f06 3025 NAMETH(copy, "KECCAK.copy() -> KECCAK'")
d96c882e 3026 METH (mix, "KECCAK.mix(DATA)")
df0bd0f9 3027 METH (set, "KECCAK.set(DATA)")
d96c882e 3028 METH (extract, "KECCAK.extract(NOCTETS)")
91e56f06 3029 NAMETH(step, "KECCAK.step()")
b35fdbe6
MW		 3030#undef METHNAME
3031 { 0 }
3032};
3033
c263b05c 3034static const PyTypeObject kxvik_pytype_skel = {
591bf41b 3035 PyVarObject_HEAD_INIT(0, 0) /* Header */
b35fdbe6
MW		 3036 "Keccak1600", /* @tp_name@ */
3037 sizeof(kxvik_pyobj), /* @tp_basicsize@ */
3038 0, /* @tp_itemsize@ */
3039
3040 0, /* @tp_dealloc@ */
3041 0, /* @tp_print@ */
3042 0, /* @tp_getattr@ */
3043 0, /* @tp_setattr@ */
3044 0, /* @tp_compare@ */
3045 0, /* @tp_repr@ */
3046 0, /* @tp_as_number@ */
3047 0, /* @tp_as_sequence@ */
3048 0, /* @tp_as_mapping@ */
3049 0, /* @tp_hash@ */
3050 0, /* @tp_call@ */
3051 0, /* @tp_str@ */
3052 0, /* @tp_getattro@ */
3053 0, /* @tp_setattro@ */
3054 0, /* @tp_as_buffer@ */
3055 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3056 Py_TPFLAGS_BASETYPE,
3057
3058 /* @tp_doc@ */
d96c882e 3059 "Keccak1600([nround = 24]): Keccak-p[1600, n] state.",
b35fdbe6
MW		 3060
3061 0, /* @tp_traverse@ */
3062 0, /* @tp_clear@ */
3063 0, /* @tp_richcompare@ */
3064 0, /* @tp_weaklistoffset@ */
3065 0, /* @tp_iter@ */
3066 0, /* @tp_iternext@ */
c90f712e 3067 PYMETHODS(kxvik), /* @tp_methods@ */
8e923c68
MW		 3068 PYMEMBERS(kxvik), /* @tp_members@ */
3069 0, /* @tp_getset@ */
b35fdbe6
MW		 3070 0, /* @tp_base@ */
3071 0, /* @tp_dict@ */
3072 0, /* @tp_descr_get@ */
3073 0, /* @tp_descr_set@ */
3074 0, /* @tp_dictoffset@ */
3075 0, /* @tp_init@ */
3076 PyType_GenericAlloc, /* @tp_alloc@ */
3077 kxvik_pynew, /* @tp_new@ */
3078 0, /* @tp_free@ */
3079 0 /* @tp_is_gc@ */
3080};
3081
6bd22b53
MW		 3082static PyTypeObject *shake_pytype, *shake128_pytype, *shake256_pytype;
3083
3084typedef struct shake_pyobj {
3085 PyObject_HEAD
3086 int st;
3087 shake_ctx h;
3088} shake_pyobj;
3089
3090#define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
3091#define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
3092
3093static PyObject *shake_dopynew(void (*initfn)(shake_ctx *,
3094 const void *, size_t,
3095 const void *, size_t),
3096 PyTypeObject *ty,
3097 PyObject *arg, PyObject *kw)
3098{
3099 shake_pyobj *rc = 0;
04b75d71 3100 PyObject *pobj = Py_None, *fobj = Py_None;
21684137 3101 struct bin p = BIN_INIT, f = BIN_INIT;
827f89d7 3102 static const char *const kwlist[] = { "perso", "func", 0 };
6bd22b53 3103
04b75d71
MW		 3104 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|OO:new", KWLIST, &pobj, &fobj))
3105 goto end;
3106 if (pobj != Py_None && !convbin(pobj, &p)) goto end;
3107 if (fobj != Py_None && !convbin(fobj, &f)) goto end;
6bd22b53 3108 rc = (shake_pyobj *)ty->tp_alloc(ty, 0);
67c75893 3109 initfn(&rc->h, f.p, f.sz, p.p, p.sz);
6bd22b53
MW		 3110 rc->st = 0;
3111end:
21684137 3112 freebin(&p); freebin(&f);
6bd22b53
MW		 3113 return ((PyObject *)rc);
3114}
3115
3116static PyObject *shake128_pynew(PyTypeObject *ty,
3117 PyObject *arg, PyObject *kw)
3118 { return (shake_dopynew(cshake128_init, ty, arg, kw)); }
3119
3120static PyObject *shake256_pynew(PyTypeObject *ty,
3121 PyObject *arg, PyObject *kw)
3122 { return (shake_dopynew(cshake256_init, ty, arg, kw)); }
3123
3124static int shake_check(PyObject *me, int st)
3125{
3126 if (SHAKE_ST(me) != st) VALERR("wrong state");
3127 return (0);
3128end:
3129 return (-1);
3130}
3131
3132static PyObject *shakemeth_hash(PyObject *me, PyObject *arg)
3133{
21684137
MW		 3134 struct bin m = BIN_INIT;
3135 PyObject *rc = 0;
3136
3137 if (!PyArg_ParseTuple(arg, "O&:hash", convbin, &m)) goto end;
3138 if (shake_check(me, 0)) goto end;
67c75893 3139 shake_hash(SHAKE_H(me), m.p, m.sz);
21684137
MW		 3140 rc = me; Py_INCREF(rc);
3141end:
3142 freebin(&m);
3143 return (rc);
6bd22b53
MW		 3144}
3145
3146#define SHAKEMETH_HASHU_(n, W, w) \
3147 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
3148 { \
3149 uint##n x; \
3150 octet b[SZ_##W]; \
21684137 3151 \
0e5c668c
MW		 3152 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) return (0); \
3153 if (shake_check(me, 0)) return (0); \
6bd22b53
MW		 3154 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3155 RETURN_ME; \
6bd22b53
MW		 3156 }
3157DOUINTCONV(SHAKEMETH_HASHU_)
3158
3159#define SHAKEMETH_HASHBUF_(n, W, w) \
3160 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
3161 { \
21684137
MW		 3162 struct bin in = BIN_INIT; \
3163 PyObject *rc = 0; \
6bd22b53 3164 octet b[SZ_##W]; \
21684137 3165 \
67c75893 3166 if (!PyArg_ParseTuple(arg, "O&:hashbuf" #w, convbin, &in)) goto end; \
e01ab3c9 3167 if (in.sz > MASK##n) VALERR("too large"); \
6bd22b53 3168 if (shake_check(me, 0)) goto end; \
67c75893
MW		 3169 STORE##W(b, in.sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
3170 shake_hash(SHAKE_H(me), in.p, in.sz); \
21684137 3171 rc = me; Py_INCREF(rc); \
6bd22b53 3172 end: \
21684137
MW		 3173 freebin(&in); \
3174 return (rc); \
6bd22b53
MW		 3175 }
3176DOUINTCONV(SHAKEMETH_HASHBUF_)
3177
3178static PyObject *shakemeth_hashstrz(PyObject *me, PyObject *arg)
3179{
3180 char *p;
21684137 3181
6bd22b53
MW		 3182 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
3183 if (shake_check(me, 0)) return (0);
3184 shake_hash(SHAKE_H(me), p, strlen(p) + 1);
3185 RETURN_ME;
3186}
3187
91e56f06 3188static PyObject *shakemeth_xof(PyObject *me)
6bd22b53 3189{
6bd22b53
MW		 3190 if (shake_check(me, 0)) goto end;
3191 shake_xof(SHAKE_H(me));
3192 SHAKE_ST(me) = 1;
3193 RETURN_ME;
3194end:
3195 return (0);
3196}
3197
aaf8c7aa 3198static PyObject *shakemeth_done(PyObject *me, PyObject *arg, PyObject *kw)
6bd22b53
MW		 3199{
3200 PyObject *rc = 0;
aaf8c7aa
MW		 3201 size_t n = 100 - SHAKE_H(me)->h.r/2;
3202 static const char *const kwlist[] = { "hsz", 0 };
21684137 3203
aaf8c7aa
MW		 3204 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:done", KWLIST, convszt, &n))
3205 goto end;
6bd22b53
MW		 3206 if (shake_check(me, 0)) goto end;
3207 rc = bytestring_pywrap(0, n);
2135a6d3 3208 shake_done(SHAKE_H(me), BIN_PTR(rc), n);
6bd22b53
MW		 3209 SHAKE_ST(me) = -1;
3210end:
3211 return (rc);
3212}
3213
91e56f06 3214static PyObject *shakemeth_copy(PyObject *me)
6bd22b53
MW		 3215{
3216 shake_pyobj *rc = 0;
3217
2a448f86 3218 rc = PyObject_NEW(shake_pyobj, Py_TYPE(me));
6bd22b53
MW		 3219 rc->h = *SHAKE_H(me);
3220 rc->st = SHAKE_ST(me);
9b5c9816 3221 return ((PyObject *)rc);
6bd22b53
MW		 3222}
3223
3224static PyObject *shakemeth_get(PyObject *me, PyObject *arg)
3225{
3226 PyObject *rc = 0;
3227 size_t sz;
3228
3229 if (!PyArg_ParseTuple(arg, "O&:get", convszt, &sz)) goto end;
3230 if (shake_check(me, 1)) goto end;
3231 rc = bytestring_pywrap(0, sz);
2135a6d3 3232 shake_get(SHAKE_H(me), BIN_PTR(rc), sz);
6bd22b53
MW		 3233end:
3234 return (rc);
3235}
3236
3237static PyObject *shakemeth_mask(PyObject *me, PyObject *arg)
3238{
3239 PyObject *rc = 0;
21684137 3240 struct bin in = BIN_INIT;
6bd22b53 3241
67c75893 3242 if (!PyArg_ParseTuple(arg, "O&:mask", convbin, &in)) goto end;
6bd22b53 3243 if (shake_check(me, 1)) goto end;
67c75893 3244 rc = bytestring_pywrap(0, in.sz);
2135a6d3 3245 shake_mask(SHAKE_H(me), in.p, BIN_PTR(rc), in.sz);
6bd22b53 3246end:
21684137 3247 freebin(&in);
6bd22b53
MW		 3248 return (rc);
3249}
3250
6bd22b53
MW		 3251static PyObject *shakeget_state(PyObject *me, void *hunoz)
3252{
3253 int st = SHAKE_ST(me);
2135a6d3
MW		 3254 return (TEXT_FROMSTR(st == 0 ? "absorb" :
3255 st == 1 ? "squeeze" : "dead"));
6bd22b53
MW		 3256}
3257
8e923c68
MW		 3258static const PyMemberDef shake_pymembers[] = {
3259#define MEMBERSTRUCT shake_pyobj
3260 MEMRNM(rate, T_UINT, h.h.r, READONLY, "S.rate -> rate, in bytes")
3261 MEMRNM(buffered, T_UINT, h.h.n, READONLY,
3262 "S.buffered -> amount currently buffered")
3263#undef MEMBERSTRUCT
3264 { 0 }
3265};
3266
c90f712e 3267static const PyGetSetDef shake_pygetset[] = {
6bd22b53 3268#define GETSETNAME(op, name) shake##op##_##name
d96c882e 3269 GET (state, "S.state -> `absorb', `squeeze', `dead'")
6bd22b53
MW		 3270#undef GETSETNAME
3271 { 0 }
3272};
3273
c90f712e 3274static const PyMethodDef shake_pymethods[] = {
6bd22b53 3275#define METHNAME(func) shakemeth_##func
91e56f06 3276 NAMETH(copy, "S.copy() -> SS")
d96c882e 3277 METH (hash, "S.hash(M)")
6bd22b53
MW		 3278#define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
3279 DOUINTCONV(METHU_)
3280#undef METHU_
3281#define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
3282 DOUINTCONV(METHBUF_)
3283#undef METHBUF_
d96c882e 3284 METH (hashstrz, "S.hashstrz(STRING)")
91e56f06 3285 NAMETH(xof, "S.xof()")
aaf8c7aa 3286 KWMETH(done, "S.done([hsz = CAP]) -> H")
d96c882e
MW		 3287 METH (get, "S.get(LEN) -> H")
3288 METH (mask, "S.mask(M) -> C")
6bd22b53
MW		 3289#undef METHNAME
3290 { 0 }
3291};
3292
c263b05c 3293static const PyTypeObject shake_pytype_skel = {
591bf41b 3294 PyVarObject_HEAD_INIT(0, 0) /* Header */
6bd22b53
MW		 3295 "Shake", /* @tp_name@ */
3296 sizeof(shake_pyobj), /* @tp_basicsize@ */
3297 0, /* @tp_itemsize@ */
3298
3299 0, /* @tp_dealloc@ */
3300 0, /* @tp_print@ */
3301 0, /* @tp_getattr@ */
3302 0, /* @tp_setattr@ */
3303 0, /* @tp_compare@ */
3304 0, /* @tp_repr@ */
3305 0, /* @tp_as_number@ */
3306 0, /* @tp_as_sequence@ */
3307 0, /* @tp_as_mapping@ */
3308 0, /* @tp_hash@ */
3309 0, /* @tp_call@ */
3310 0, /* @tp_str@ */
3311 0, /* @tp_getattro@ */
3312 0, /* @tp_setattro@ */
3313 0, /* @tp_as_buffer@ */
3314 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3315 Py_TPFLAGS_BASETYPE,
3316
3317 /* @tp_doc@ */
d96c882e 3318 "SHAKE/cSHAKE/KMAC base class.",
6bd22b53
MW		 3319
3320 0, /* @tp_traverse@ */
3321 0, /* @tp_clear@ */
3322 0, /* @tp_richcompare@ */
3323 0, /* @tp_weaklistoffset@ */
3324 0, /* @tp_iter@ */
3325 0, /* @tp_iternext@ */
c90f712e 3326 PYMETHODS(shake), /* @tp_methods@ */
8e923c68 3327 PYMEMBERS(shake), /* @tp_members@ */
c90f712e 3328 PYGETSET(shake), /* @tp_getset@ */
6bd22b53
MW		 3329 0, /* @tp_base@ */
3330 0, /* @tp_dict@ */
3331 0, /* @tp_descr_get@ */
3332 0, /* @tp_descr_set@ */
3333 0, /* @tp_dictoffset@ */
3334 0, /* @tp_init@ */
3335 PyType_GenericAlloc, /* @tp_alloc@ */
3336 abstract_pynew, /* @tp_new@ */
3337 0, /* @tp_free@ */
3338 0 /* @tp_is_gc@ */
3339};
3340
c263b05c 3341static const PyTypeObject shake128_pytype_skel = {
591bf41b 3342 PyVarObject_HEAD_INIT(0, 0) /* Header */
6bd22b53
MW		 3343 "Shake128", /* @tp_name@ */
3344 0, /* @tp_basicsize@ */
3345 0, /* @tp_itemsize@ */
3346
3347 0, /* @tp_dealloc@ */
3348 0, /* @tp_print@ */
3349 0, /* @tp_getattr@ */
3350 0, /* @tp_setattr@ */
3351 0, /* @tp_compare@ */
3352 0, /* @tp_repr@ */
3353 0, /* @tp_as_number@ */
3354 0, /* @tp_as_sequence@ */
3355 0, /* @tp_as_mapping@ */
3356 0, /* @tp_hash@ */
3357 0, /* @tp_call@ */
3358 0, /* @tp_str@ */
3359 0, /* @tp_getattro@ */
3360 0, /* @tp_setattro@ */
3361 0, /* @tp_as_buffer@ */
3362 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3363 Py_TPFLAGS_BASETYPE,
3364
3365 /* @tp_doc@ */
d96c882e 3366 "Shake128([perso = STR], [func = STR]): SHAKE128/cSHAKE128 XOF.",
6bd22b53
MW		 3367
3368 0, /* @tp_traverse@ */
3369 0, /* @tp_clear@ */
3370 0, /* @tp_richcompare@ */
3371 0, /* @tp_weaklistoffset@ */
3372 0, /* @tp_iter@ */
3373 0, /* @tp_iternext@ */
3374 0, /* @tp_methods@ */
3375 0, /* @tp_members@ */
3376 0, /* @tp_getset@ */
3377 0, /* @tp_base@ */
3378 0, /* @tp_dict@ */
3379 0, /* @tp_descr_get@ */
3380 0, /* @tp_descr_set@ */
3381 0, /* @tp_dictoffset@ */
3382 0, /* @tp_init@ */
3383 PyType_GenericAlloc, /* @tp_alloc@ */
3384 shake128_pynew, /* @tp_new@ */
3385 0, /* @tp_free@ */
3386 0 /* @tp_is_gc@ */
3387};
3388
c263b05c 3389static const PyTypeObject shake256_pytype_skel = {
591bf41b 3390 PyVarObject_HEAD_INIT(0, 0) /* Header */
6bd22b53
MW		 3391 "Shake256", /* @tp_name@ */
3392 0, /* @tp_basicsize@ */
3393 0, /* @tp_itemsize@ */
3394
3395 0, /* @tp_dealloc@ */
3396 0, /* @tp_print@ */
3397 0, /* @tp_getattr@ */
3398 0, /* @tp_setattr@ */
3399 0, /* @tp_compare@ */
3400 0, /* @tp_repr@ */
3401 0, /* @tp_as_number@ */
3402 0, /* @tp_as_sequence@ */
3403 0, /* @tp_as_mapping@ */
3404 0, /* @tp_hash@ */
3405 0, /* @tp_call@ */
3406 0, /* @tp_str@ */
3407 0, /* @tp_getattro@ */
3408 0, /* @tp_setattro@ */
3409 0, /* @tp_as_buffer@ */
3410 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3411 Py_TPFLAGS_BASETYPE,
3412
3413 /* @tp_doc@ */
d96c882e 3414 "Shake256([perso = STR], [func = STR]): SHAKE256/cSHAKE256 XOF.",
6bd22b53
MW		 3415
3416 0, /* @tp_traverse@ */
3417 0, /* @tp_clear@ */
3418 0, /* @tp_richcompare@ */
3419 0, /* @tp_weaklistoffset@ */
3420 0, /* @tp_iter@ */
3421 0, /* @tp_iternext@ */
3422 0, /* @tp_methods@ */
3423 0, /* @tp_members@ */
3424 0, /* @tp_getset@ */
3425 0, /* @tp_base@ */
3426 0, /* @tp_dict@ */
3427 0, /* @tp_descr_get@ */
3428 0, /* @tp_descr_set@ */
3429 0, /* @tp_dictoffset@ */
3430 0, /* @tp_init@ */
3431 PyType_GenericAlloc, /* @tp_alloc@ */
3432 shake256_pynew, /* @tp_new@ */
3433 0, /* @tp_free@ */
3434 0 /* @tp_is_gc@ */
3435};
3436
668b5f54
MW		 3437static PyTypeObject *kmac_pytype, *kmac128_pytype, *kmac256_pytype;
3438
3439static PyObject *kmac_dopynew(void (*initfn)(shake_ctx *,
3440 const void *, size_t,
3441 const void *, size_t),
3442 PyTypeObject *ty,
3443 PyObject *arg, PyObject *kw)
3444{
3445 shake_pyobj *rc = 0;
3446 PyObject *pobj = Py_None;
21684137 3447 struct bin k = BIN_INIT, p = BIN_INIT;
668b5f54
MW		 3448 static const char *const kwlist[] = { "key", "perso", 0 };
3449
3450 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O:new", KWLIST,
3451 convbin, &k, &pobj))
3452 goto end;
3453 if (pobj != Py_None && !convbin(pobj, &p)) goto end;
3454 rc = (shake_pyobj *)ty->tp_alloc(ty, 0);
3455 initfn(&rc->h, p.p, p.sz, k.p, k.sz);
3456 rc->st = 0;
3457end:
21684137 3458 freebin(&k); freebin(&p);
668b5f54
MW		 3459 return ((PyObject *)rc);
3460}
3461
3462static PyObject *kmac128_pynew(PyTypeObject *ty,
3463 PyObject *arg, PyObject *kw)
3464 { return (kmac_dopynew(kmac128_init, ty, arg, kw)); }
3465
3466static PyObject *kmac256_pynew(PyTypeObject *ty,
3467 PyObject *arg, PyObject *kw)
3468 { return (kmac_dopynew(kmac256_init, ty, arg, kw)); }
3469
3470static PyObject *kmacmeth_xof(PyObject *me)
3471{
3472 if (shake_check(me, 0)) goto end;
3473 kmac_xof(SHAKE_H(me));
3474 SHAKE_ST(me) = 1;
3475 RETURN_ME;
3476end:
3477 return (0);
3478}
3479
3480static PyObject *kmacmeth_done(PyObject *me, PyObject *arg, PyObject *kw)
3481{
3482 PyObject *rc = 0;
3483 size_t n = 100 - SHAKE_H(me)->h.r/2;
3484 static const char *const kwlist[] = { "hsz", 0 };
3485 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:done", KWLIST, convszt, &n))
3486 goto end;
3487 if (shake_check(me, 0)) goto end;
3488 rc = bytestring_pywrap(0, n);
3489 kmac_done(SHAKE_H(me), BIN_PTR(rc), n);
3490 SHAKE_ST(me) = -1;
3491end:
3492 return (rc);
3493}
3494
3495static const PyMethodDef kmac_pymethods[] = {
3496#define METHNAME(func) kmacmeth_##func
3497 NAMETH(xof, "K.xof()")
3498 KWMETH(done, "K.done([hsz = CAP/2]) -> T")
3499#undef METHNAME
3500 { 0 }
3501};
3502
3503static const PyTypeObject kmac_pytype_skel = {
3504 PyVarObject_HEAD_INIT(0, 0) /* Header */
3505 "KMAC", /* @tp_name@ */
3506 sizeof(shake_pyobj), /* @tp_basicsize@ */
3507 0, /* @tp_itemsize@ */
3508
3509 0, /* @tp_dealloc@ */
3510 0, /* @tp_print@ */
3511 0, /* @tp_getattr@ */
3512 0, /* @tp_setattr@ */
3513 0, /* @tp_compare@ */
3514 0, /* @tp_repr@ */
3515 0, /* @tp_as_number@ */
3516 0, /* @tp_as_sequence@ */
3517 0, /* @tp_as_mapping@ */
3518 0, /* @tp_hash@ */
3519 0, /* @tp_call@ */
3520 0, /* @tp_str@ */
3521 0, /* @tp_getattro@ */
3522 0, /* @tp_setattro@ */
3523 0, /* @tp_as_buffer@ */
3524 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3525 Py_TPFLAGS_BASETYPE,
3526
3527 /* @tp_doc@ */
3528 "KMAC base class.",
3529
3530 0, /* @tp_traverse@ */
3531 0, /* @tp_clear@ */
3532 0, /* @tp_richcompare@ */
3533 0, /* @tp_weaklistoffset@ */
3534 0, /* @tp_iter@ */
3535 0, /* @tp_iternext@ */
3536 PYMETHODS(kmac), /* @tp_methods@ */
3537 0, /* @tp_members@ */
3538 0, /* @tp_getset@ */
3539 0, /* @tp_base@ */
3540 0, /* @tp_dict@ */
3541 0, /* @tp_descr_get@ */
3542 0, /* @tp_descr_set@ */
3543 0, /* @tp_dictoffset@ */
3544 0, /* @tp_init@ */
3545 PyType_GenericAlloc, /* @tp_alloc@ */
3546 abstract_pynew, /* @tp_new@ */
3547 0, /* @tp_free@ */
3548 0 /* @tp_is_gc@ */
3549};
3550
3551static const PyTypeObject kmac128_pytype_skel = {
3552 PyVarObject_HEAD_INIT(0, 0) /* Header */
3553 "KMAC128", /* @tp_name@ */
3554 0, /* @tp_basicsize@ */
3555 0, /* @tp_itemsize@ */
3556
3557 0, /* @tp_dealloc@ */
3558 0, /* @tp_print@ */
3559 0, /* @tp_getattr@ */
3560 0, /* @tp_setattr@ */
3561 0, /* @tp_compare@ */
3562 0, /* @tp_repr@ */
3563 0, /* @tp_as_number@ */
3564 0, /* @tp_as_sequence@ */
3565 0, /* @tp_as_mapping@ */
3566 0, /* @tp_hash@ */
3567 0, /* @tp_call@ */
3568 0, /* @tp_str@ */
3569 0, /* @tp_getattro@ */
3570 0, /* @tp_setattro@ */
3571 0, /* @tp_as_buffer@ */
3572 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3573 Py_TPFLAGS_BASETYPE,
3574
3575 /* @tp_doc@ */
3576 "KMAC128(KEY, [perso = STR]): KMAC XOMAC.",
3577
3578 0, /* @tp_traverse@ */
3579 0, /* @tp_clear@ */
3580 0, /* @tp_richcompare@ */
3581 0, /* @tp_weaklistoffset@ */
3582 0, /* @tp_iter@ */
3583 0, /* @tp_iternext@ */
3584 0, /* @tp_methods@ */
3585 0, /* @tp_members@ */
3586 0, /* @tp_getset@ */
3587 0, /* @tp_base@ */
3588 0, /* @tp_dict@ */
3589 0, /* @tp_descr_get@ */
3590 0, /* @tp_descr_set@ */
3591 0, /* @tp_dictoffset@ */
3592 0, /* @tp_init@ */
3593 PyType_GenericAlloc, /* @tp_alloc@ */
3594 kmac128_pynew, /* @tp_new@ */
3595 0, /* @tp_free@ */
3596 0 /* @tp_is_gc@ */
3597};
3598
3599static const PyTypeObject kmac256_pytype_skel = {
3600 PyVarObject_HEAD_INIT(0, 0) /* Header */
3601 "KMAC256", /* @tp_name@ */
3602 0, /* @tp_basicsize@ */
3603 0, /* @tp_itemsize@ */
3604
3605 0, /* @tp_dealloc@ */
3606 0, /* @tp_print@ */
3607 0, /* @tp_getattr@ */
3608 0, /* @tp_setattr@ */
3609 0, /* @tp_compare@ */
3610 0, /* @tp_repr@ */
3611 0, /* @tp_as_number@ */
3612 0, /* @tp_as_sequence@ */
3613 0, /* @tp_as_mapping@ */
3614 0, /* @tp_hash@ */
3615 0, /* @tp_call@ */
3616 0, /* @tp_str@ */
3617 0, /* @tp_getattro@ */
3618 0, /* @tp_setattro@ */
3619 0, /* @tp_as_buffer@ */
3620 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3621 Py_TPFLAGS_BASETYPE,
3622
3623 /* @tp_doc@ */
3624 "KMAC256(KEY, [perso = STR]): KMAC XOMAC.",
3625
3626 0, /* @tp_traverse@ */
3627 0, /* @tp_clear@ */
3628 0, /* @tp_richcompare@ */
3629 0, /* @tp_weaklistoffset@ */
3630 0, /* @tp_iter@ */
3631 0, /* @tp_iternext@ */
3632 0, /* @tp_methods@ */
3633 0, /* @tp_members@ */
3634 0, /* @tp_getset@ */
3635 0, /* @tp_base@ */
3636 0, /* @tp_dict@ */
3637 0, /* @tp_descr_get@ */
3638 0, /* @tp_descr_set@ */
3639 0, /* @tp_dictoffset@ */
3640 0, /* @tp_init@ */
3641 PyType_GenericAlloc, /* @tp_alloc@ */
3642 kmac256_pynew, /* @tp_new@ */
3643 0, /* @tp_free@ */
3644 0 /* @tp_is_gc@ */
3645};
3646
a29f5426
MW		 3647static PyTypeObject *strobe_pytype;
3648
3649typedef struct strobe_pyobj {
3650 PyObject_HEAD
3651 strobe_ctx ctx;
3652} strobe_pyobj;
3653#define STROBE_CTX(o) (&((strobe_pyobj *)(o))->ctx)
3654
3655static int convstrbf(PyObject *x, void *p)
3656{
3657 unsigned *ff = p, f;
3658 const char *q;
3659 size_t sz;
3660 int rc = 0;
3661
3662 if (TEXT_CHECK(x)) {
3663 TEXT_PTRLEN(x, q, sz); f = 0;
3664 while (sz--) switch (*q++) {
3665 case 'I': f |= STRBF_I; break;
3666 case 'A': f |= STRBF_A; break;
3667 case 'C': f |= STRBF_C; break;
3668 case 'T': f |= STRBF_T; break;
3669 case 'M': f |= STRBF_M; break;
3670 default: if (!ISSPACE(q[-1])) VALERR("unknown flag character");
3671 }
3672 *ff = f; rc = 1;
3673 } else if (convuint(x, ff))
3674 rc = 1;
3675 else {
3676 PyErr_Clear();
3677 TYERR("expected string or int");
3678 }
3679end:
3680 return (rc);
3681}
3682
3683
3684static PyObject *strobe_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
3685{
3686 strobe_pyobj *rc = 0;
3687 unsigned lambda = 128;
3688 static const char *const kwlist[] = { "l", 0 };
3689
3690 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST,
3691 convuint, &lambda))
3692 goto end;
3693 if (lambda%32 || lambda > 704) VALERR("invalid security parameter");
3694 rc = (strobe_pyobj *)ty->tp_alloc(ty, 0);
3695 strobe_init(&rc->ctx, lambda);
3696end:
3697 return ((PyObject *)rc);
3698}
3699
3700static PyObject *strobemeth_copy(PyObject *me)
3701{
3702 strobe_pyobj *strobe = (strobe_pyobj *)me, *rc;
3703
3704 rc = PyObject_NEW(strobe_pyobj, me->ob_type);
3705 rc->ctx = strobe->ctx;
3706 return ((PyObject *)rc);
3707}
3708
3709static int strobe_checkinactive(PyObject *me)
3710{
3711 int rc = -1;
3712
3713 if (STROBE_CTX(me)->f&STRBF_ACTIVE) VALERR("operation already active");
3714 rc = 0;
3715end:
3716 return (rc);
3717}
3718
3719static int strobe_checkactive(PyObject *me)
3720{
3721 int rc = -1;
3722
3723 if (!(STROBE_CTX(me)->f&STRBF_ACTIVE)) VALERR("operation not active");
3724 rc = 0;
3725end:
3726 return (rc);
3727}
3728
3729static PyObject *strobemeth_begin(PyObject *me, PyObject *arg)
3730{
3731 unsigned f;
3732
3733 if (!PyArg_ParseTuple(arg, "O&:begin", convstrbf, &f)) goto end;
3734 if (strobe_checkinactive(me)) goto end;
3735 if (f&~STRBF_VALIDMASK) VALERR("bad flags");
3736 strobe_begin(STROBE_CTX(me), f);
3737 RETURN_ME;
3738end:
3739 return (0);
3740}
3741
3742static PyObject *strobe_pyprocess(PyObject *me,
3743 const void *p0, size_t sz0,
3744 const void *p1, size_t sz1)
3745{
3746 char *q;
3747 PyObject *rc = 0;
3748
3749 if (strobe_checkactive(me)) goto end;
3750 if (!(STROBE_CTX(me)->f&STRBF_WANTIN) && p0)
3751 VALERR("no input expected for current operation");
3752 if (!(STROBE_CTX(me)->f&STRBF_WANTOUT)) q = 0;
3753 else { rc = bytestring_pywrap(0, sz0 + sz1); q = BIN_PTR(rc); }
3754 strobe_process(STROBE_CTX(me), p0, q, sz0);
3755 if (sz1) strobe_process(STROBE_CTX(me), p1, q ? q + sz0 : 0, sz1);
3756 if (!q) RETURN_ME;
3757end:
3758 return (rc);
3759}
3760
3761static PyObject *strobemeth_process(PyObject *me, PyObject *arg)
3762{
3763 PyObject *inobj;
21684137 3764 struct bin in = BIN_INIT;
a29f5426
MW		 3765 PyObject *rc = 0;
3766
3767 in.p = 0;
3768 if (!PyArg_ParseTuple(arg, "O:process", &inobj)) goto end;
3769 if (!convszt(inobj, &in.sz) && (PyErr_Clear(), !convbin(inobj, &in))) {
3770 PyErr_Clear();
3771 TYERR("expected integer, string, unicode, or single-segment buffer");
3772 }
3773 rc = strobe_pyprocess(me, in.p, in.sz, 0, 0);
3774end:
21684137 3775 freebin(&in);
a29f5426
MW		 3776 return (rc);
3777}
3778
3779static PyObject *strobemeth_done(PyObject *me)
3780{
3781 unsigned f;
3782 int rc;
3783
3784 if (strobe_checkactive(me)) return (0);
3785 f = STROBE_CTX(me)->f; rc = strobe_done(STROBE_CTX(me));
3786 if (f&STRBF_VRFOUT) return (getbool(!rc));
3787 else RETURN_ME;
3788}
3789
3790#define STROBEMETH_PROCESSU_(n, W, w) \
3791 static PyObject *strobemeth_processu##w(PyObject *me, PyObject *arg) \
3792 { \
3793 uint##n x; \
3794 octet b[SZ_##W]; \
21684137 3795 \
a29f5426
MW		 3796 if (!PyArg_ParseTuple(arg, "O&:processu" #w, convu##n, &x)) return (0); \
3797 STORE##W(b, x); return (strobe_pyprocess(me, b, sizeof(b), 0, 0)); \
3798 }
3799DOUINTCONV(STROBEMETH_PROCESSU_)
3800
3801#define STROBEMETH_PROCESSBUF_(n, W, w) \
3802 static PyObject *strobemeth_processbuf##w(PyObject *me, PyObject *arg) \
3803 { \
21684137 3804 struct bin in = BIN_INIT; \
a29f5426 3805 octet b[SZ_##W]; \
21684137
MW		 3806 PyObject *rc = 0; \
3807 \
a29f5426
MW		 3808 if (!PyArg_ParseTuple(arg, "O&:processbuf" #w, convbin, &in)) goto end; \
3809 if (in.sz > MASK##n) VALERR("too large"); \
3810 STORE##W(b, in.sz); \
21684137 3811 rc = strobe_pyprocess(me, b, sizeof(b), in.p, in.sz); \
a29f5426 3812 end: \
21684137
MW		 3813 freebin(&in); \
3814 return (rc); \
a29f5426
MW		 3815 }
3816DOUINTCONV(STROBEMETH_PROCESSBUF_)
3817
3818static PyObject *strobemeth_processstrz(PyObject *me, PyObject *arg)
3819{
3820 char *p;
3821 if (!PyArg_ParseTuple(arg, "s:processstrz", &p)) return (0);
3822 return (strobe_pyprocess(me, p, strlen(p) + 1, 0, 0));
3823}
3824
3825#define STROBEMETH_INONLY_(meth, arg) \
3826 static PyObject *strobemeth_##meth(PyObject *me, \
3827 PyObject *arg, PyObject *kw) \
3828 { \
21684137
MW		 3829 struct bin in = BIN_INIT; unsigned f = 0; \
3830 PyObject *rc = 0; \
a29f5426 3831 static const char *const kwlist[] = { #arg, "f", 0 }; \
21684137 3832 \
a29f5426
MW		 3833 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:" #meth, KWLIST, \
3834 convbin, &in, convstrbf, &f)) \
3835 goto end; \
3836 if (f&~STRBF_M) VALERR("bad flags"); \
3837 if (strobe_checkinactive(me)) goto end; \
3838 strobe_##meth(STROBE_CTX(me), f, in.p, in.sz); \
21684137 3839 rc = me; Py_INCREF(rc); \
a29f5426 3840 end: \
21684137
MW		 3841 freebin(&in); \
3842 return (rc); \
a29f5426
MW		 3843 }
3844
3845#define STROBEMETH_OUTONLY_(meth) \
3846 static PyObject *strobemeth_##meth(PyObject *me, \
3847 PyObject *arg, PyObject *kw) \
3848 { \
3849 size_t sz; unsigned f = 0; PyObject *rc; \
3850 static const char *const kwlist[] = { "sz", "f", 0 }; \
21684137 3851 \
a29f5426
MW		 3852 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:" #meth, KWLIST, \
3853 convszt, &sz, convstrbf, &f)) \
3854 goto end; \
3855 if (f&~STRBF_M) VALERR("bad flags"); \
3856 if (strobe_checkinactive(me)) goto end; \
3857 rc = bytestring_pywrap(0, sz); \
3858 strobe_##meth(STROBE_CTX(me), f, BIN_PTR(rc), sz); \
a29f5426 3859 end: \
21684137 3860 return (rc); \
a29f5426
MW		 3861 }
3862
3863#define STROBEMETH_INOUT_(meth, arg) \
3864 static PyObject *strobemeth_##meth(PyObject *me, \
3865 PyObject *arg, PyObject *kw) \
3866 { \
21684137 3867 struct bin in = BIN_INIT; unsigned f = 0; PyObject *rc; \
a29f5426 3868 static const char *const kwlist[] = { #arg, "f", 0 }; \
21684137 3869 \
a29f5426
MW		 3870 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:" #meth, KWLIST, \
3871 convbin, &in, convstrbf, &f)) \
3872 goto end; \
3873 if (f&~STRBF_M) VALERR("bad flags"); \
3874 if (strobe_checkinactive(me)) goto end; \
3875 rc = bytestring_pywrap(0, in.sz); \
3876 strobe_##meth(STROBE_CTX(me), f, in.p, BIN_PTR(rc), in.sz); \
a29f5426 3877 end: \
21684137
MW		 3878 freebin(&in); \
3879 return (rc); \
a29f5426
MW		 3880 }
3881
3882STROBEMETH_INONLY_(key, key)
3883STROBEMETH_INONLY_(ad, msg)
3884STROBEMETH_OUTONLY_(prf)
3885STROBEMETH_INONLY_(clrout, msg)
3886STROBEMETH_INONLY_(clrin, msg)
3887STROBEMETH_INOUT_(encout, msg)
3888STROBEMETH_INOUT_(encin, ct)
3889STROBEMETH_OUTONLY_(macout)
3890
3891static PyObject *strobemeth_macin(PyObject *me, PyObject *arg, PyObject *kw)
3892{
21684137
MW		 3893 struct bin in = BIN_INIT; unsigned f = 0;
3894 PyObject *rc = 0;
a29f5426 3895 static const char *const kwlist[] = { "tag", "f", 0 };
21684137 3896
a29f5426
MW		 3897 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:macin", KWLIST,
3898 convbin, &in, convstrbf, &f))
3899 goto end;
3900 if (f&~STRBF_M) VALERR("bad flags");
3901 if (strobe_checkinactive(me)) goto end;
21684137 3902 rc = getbool(!strobe_macin(STROBE_CTX(me), f, in.p, in.sz));
a29f5426 3903end:
21684137
MW		 3904 freebin(&in);
3905 return (rc);
a29f5426
MW		 3906}
3907
3908static PyObject *strobemeth_ratchet(PyObject *me,
3909 PyObject *arg, PyObject *kw)
3910{
3911 size_t sz; unsigned f = 0;
3912 static const char *const kwlist[] = { "sz", "f", 0 };
21684137 3913
a29f5426
MW		 3914 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:ratchet", KWLIST,
3915 convszt, &sz, convstrbf, &f))
3916 goto end;
3917 if (f&~STRBF_M) VALERR("bad flags");
3918 if (strobe_checkinactive(me)) goto end;
3919 strobe_ratchet(STROBE_CTX(me), f, sz); RETURN_ME;
3920end:
3921 return (0);
3922}
3923
3924static PyObject *strobeget_l(PyObject *me, void *hunoz)
3925 { return (PyInt_FromLong(4*(200 - STROBE_CTX(me)->r))); }
3926
3927static PyObject *strobeget_role(PyObject *me, void *hunoz)
3928 { return (PyInt_FromLong(STROBE_CTX(me)->f&STROBE_ROLEMASK)); }
3929
3930static PyObject *strobeget_activep(PyObject *me, void *hunoz)
3931 { return (getbool(STROBE_CTX(me)->f&STRBF_ACTIVE)); }
3932
3933static const PyGetSetDef strobe_pygetset[] = {
3934#define GETSETNAME(op, name) strobe##op##_##name
3935 GET (l, "STROBE.l -> security parameter")
3936 GET (role, "STROBE.role -> STRBRL_...")
3937 GET (activep, "STROBE.activep -> operation active?")
3938#undef GETSETNAME
3939 { 0 }
3940};
3941
3942static const PyMethodDef strobe_pymethods[] = {
3943#define METHNAME(func) strobemeth_##func
3944 NAMETH(copy, "S.copy() -> SS")
3945 METH (begin, "S.begin(MSGTY)")
3946 METH (process, "S.process(MSG | SZ) [-> OUT]")
3947#define METHU_(n, W, w) \
3948 METH(processu##w, "S.processu" #w "(WORD) [-> OUT]")
3949 DOUINTCONV(METHU_)
3950#undef METHU_
3951#define METHBUF_(n, W, w) \
3952 METH(processbuf##w, "S.processbuf" #w "(BYTES) [-> OUT]")
3953 DOUINTCONV(METHBUF_)
3954#undef METHBUF_
3955 METH (processstrz, "S.processstrz(STRING) [-> OUT]")
3956 NAMETH(done, "S.done() [-> OK?]")
3957 KWMETH(key, "S.key(KEY, [f = 0])")
3958 KWMETH(ad, "S.ad(MSG, [f = 0])")
3959 KWMETH(prf, "S.prf(SZ, [f = 0]) -> BYTES")
3960 KWMETH(clrout, "S.clrout(MSG, [f = 0])")
3961 KWMETH(clrin, "S.clrin(MSG, [f = 0])")
3962 KWMETH(encout, "S.encout(MSG, [f = 0]) -> CT")
3963 KWMETH(encin, "S.encin(CT, [f = 0]) -> MSG")
3964 KWMETH(macout, "S.macout(SZ, [f = 0]) -> TAG")
3965 KWMETH(macin, "S.macin(TAG, [f = 0]) -> OK?")
3966 KWMETH(ratchet, "S.ratchet(SZ, [f = 0])")
3967#undef METHNAME
3968 { 0 }
3969};
3970
3971static const PyTypeObject strobe_pytype_skel = {
3972 PyVarObject_HEAD_INIT(0, 0) /* Header */
3973 "Strobe", /* @tp_name@ */
3974 sizeof(strobe_pyobj), /* @tp_basicsize@ */
3975 0, /* @tp_itemsize@ */
3976
3977 0, /* @tp_dealloc@ */
3978 0, /* @tp_print@ */
3979 0, /* @tp_getattr@ */
3980 0, /* @tp_setattr@ */
3981 0, /* @tp_compare@ */
3982 0, /* @tp_repr@ */
3983 0, /* @tp_as_number@ */
3984 0, /* @tp_as_sequence@ */
3985 0, /* @tp_as_mapping@ */
3986 0, /* @tp_hash@ */
3987 0, /* @tp_call@ */
3988 0, /* @tp_str@ */
3989 0, /* @tp_getattro@ */
3990 0, /* @tp_setattro@ */
3991 0, /* @tp_as_buffer@ */
3992 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
3993 Py_TPFLAGS_BASETYPE,
3994
3995 /* @tp_doc@ */
3996"STROBE symmetric-crypto framework.",
3997
3998 0, /* @tp_traverse@ */
3999 0, /* @tp_clear@ */
4000 0, /* @tp_richcompare@ */
4001 0, /* @tp_weaklistoffset@ */
4002 0, /* @tp_iter@ */
4003 0, /* @tp_iternext@ */
4004 PYMETHODS(strobe), /* @tp_methods@ */
4005 0, /* @tp_members@ */
4006 PYGETSET(strobe), /* @tp_getset@ */
4007 0, /* @tp_base@ */
4008 0, /* @tp_dict@ */
4009 0, /* @tp_descr_get@ */
4010 0, /* @tp_descr_set@ */
4011 0, /* @tp_dictoffset@ */
4012 0, /* @tp_init@ */
4013 PyType_GenericAlloc, /* @tp_alloc@ */
4014 strobe_pynew, /* @tp_new@ */
4015 0, /* @tp_free@ */
4016 0 /* @tp_is_gc@ */
4017};
4018
03ed9abb
MW		 4019/*----- Pseudorandom permutations -----------------------------------------*/
4020
4021static PyTypeObject *gcprp_pytype, *gprp_pytype;
4022
4023typedef struct prpinfo {
4024 const char *name;
4025 const octet *keysz;
4026 size_t ctxsz;
4027 size_t blksz;
4028 void (*init)(void *, const void *, size_t);
4029 void (*eblk)(void *, const void *, void *);
4030 void (*dblk)(void *, const void *, void *);
4031} prpinfo;
4032
4033#define PRP_DEF(PRE, pre) \
4034 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
4035 { pre##_init(ctx, k, ksz); } \
4036 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
4037 { \
4038 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
4039 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
4040 } \
4041 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
4042 { \
4043 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
4044 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
4045 } \
4046 static const prpinfo pre##_prpinfo = { \
4047 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
4048 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
4049 };
4050PRPS(PRP_DEF)
4051
4052static const struct prpinfo *const gprptab[] = {
4053#define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
4054 PRPS(PRP_ENTRY)
4055 0
b2687a0a 4056};
03ed9abb
MW		 4057
4058typedef struct gcprp_pyobj {
4059 PyHeapTypeObject ty;
4060 const prpinfo *prp;
4061} gcprp_pyobj;
4062#define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
4063
4064typedef struct gprp_pyobj {
4065 PyObject_HEAD
4066 const prpinfo *prp;
4067} gprp_pyobj;
4068#define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
4069#define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
4070
4071typedef struct prp {
4072 const prpinfo *prp;
4073 void *ctx;
4074} prp;
4075
4076static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
4077{
827f89d7 4078 static const char *const kwlist[] = { "key", 0 };
21684137 4079 struct bin k = BIN_INIT;
03ed9abb 4080 const prpinfo *prp = GCPRP_PRP(ty);
0e5b95a8 4081 PyObject *rc = 0;
03ed9abb 4082
67c75893 4083 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
03ed9abb 4084 goto end;
67c75893 4085 if (keysz(k.sz, prp->keysz) != k.sz) VALERR("bad key length");
0e5b95a8 4086 rc = (PyObject *)ty->tp_alloc(ty, 0);
03ed9abb 4087 GPRP_PRP(me) = prp;
67c75893 4088 prp->init(GPRP_CTX(me), k.p, k.sz);
03ed9abb 4089end:
21684137 4090 freebin(&k);
0e5b95a8 4091 return (rc);
03ed9abb
MW		 4092}
4093
4094static void gprp_pydealloc(PyObject *me)
2a448f86 4095 { Py_DECREF(Py_TYPE(me)); FREEOBJ(me); }
03ed9abb
MW		 4096
4097static PyObject *gcprp_pywrap(const prpinfo *prp)
4098{
4099 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
21684137 4100
03ed9abb 4101 g->prp = prp;
24b3d57b
MW		 4102 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
4103 g->ty.ht_type.tp_base = gprp_pytype;
03ed9abb 4104 Py_INCREF(gprp_pytype);
24b3d57b
MW		 4105 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
4106 Py_TPFLAGS_BASETYPE |
4107 Py_TPFLAGS_HEAPTYPE);
4108 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
4109 g->ty.ht_type.tp_free = 0;
4110 g->ty.ht_type.tp_new = gprp_pynew;
dc075750 4111 typeready(&g->ty.ht_type);
03ed9abb
MW		 4112 return ((PyObject *)g);
4113}
4114
4115static PyObject *gcpget_name(PyObject *me, void *hunoz)
2135a6d3 4116 { return (TEXT_FROMSTR(GCPRP_PRP(me)->name)); }
03ed9abb
MW		 4117static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
4118 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
4119static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
4120 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
4121
4122static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
4123{
21684137 4124 struct bin m = BIN_INIT;
03ed9abb
MW		 4125 PyObject *rc = 0;
4126
67c75893
MW		 4127 if (!PyArg_ParseTuple(arg, "O&:encrypt", convbin, &m)) goto end;
4128 if (m.sz != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
4129 rc = bytestring_pywrap(0, m.sz);
2135a6d3 4130 GPRP_PRP(me)->eblk(GPRP_CTX(me), m.p, BIN_PTR(rc));
03ed9abb 4131end:
21684137 4132 freebin(&m);
03ed9abb
MW		 4133 return (rc);
4134}
4135
4136static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
4137{
21684137 4138 struct bin c = BIN_INIT;
03ed9abb
MW		 4139 PyObject *rc = 0;
4140
67c75893
MW		 4141 if (!PyArg_ParseTuple(arg, "O&:decrypt", convbin, &c)) goto end;
4142 if (c.sz != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
4143 rc = bytestring_pywrap(0, c.sz);
2135a6d3 4144 GPRP_PRP(me)->dblk(GPRP_CTX(me), c.p, BIN_PTR(rc));
03ed9abb 4145end:
21684137 4146 freebin(&c);
03ed9abb
MW		 4147 return (rc);
4148}
4149
c90f712e 4150static const PyGetSetDef gcprp_pygetset[] = {
03ed9abb 4151#define GETSETNAME(op, name) gcp##op##_##name
d96c882e
MW		 4152 GET (keysz, "CP.keysz -> acceptable key sizes")
4153 GET (blksz, "CP.blksz -> block size")
4154 GET (name, "CP.name -> name of this kind of PRP")
03ed9abb
MW		 4155#undef GETSETNAME
4156 { 0 }
4157};
4158
c90f712e 4159static const PyMethodDef gprp_pymethods[] = {
03ed9abb 4160#define METHNAME(name) gpmeth_##name
d96c882e
MW		 4161 METH (encrypt, "P.encrypt(PT) -> CT")
4162 METH (decrypt, "P.decrypt(CT) -> PT")
03ed9abb
MW		 4163#undef METHNAME
4164 { 0 }
4165};
4166
c263b05c 4167static const PyTypeObject gcprp_pytype_skel = {
591bf41b 4168 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 4169 "GCPRP", /* @tp_name@ */
03ed9abb
MW		 4170 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
4171 0, /* @tp_itemsize@ */
4172
4173 0, /* @tp_dealloc@ */
4174 0, /* @tp_print@ */
4175 0, /* @tp_getattr@ */
4176 0, /* @tp_setattr@ */
4177 0, /* @tp_compare@ */
4178 0, /* @tp_repr@ */
4179 0, /* @tp_as_number@ */
4180 0, /* @tp_as_sequence@ */
4181 0, /* @tp_as_mapping@ */
4182 0, /* @tp_hash@ */
4183 0, /* @tp_call@ */
4184 0, /* @tp_str@ */
4185 0, /* @tp_getattro@ */
4186 0, /* @tp_setattro@ */
4187 0, /* @tp_as_buffer@ */
4188 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
4189 Py_TPFLAGS_BASETYPE,
4190
4191 /* @tp_doc@ */
d96c882e 4192 "Pseudorandom permutation metaclass.",
03ed9abb
MW		 4193
4194 0, /* @tp_traverse@ */
4195 0, /* @tp_clear@ */
4196 0, /* @tp_richcompare@ */
4197 0, /* @tp_weaklistoffset@ */
4198 0, /* @tp_iter@ */
4199 0, /* @tp_iternext@ */
4200 0, /* @tp_methods@ */
4201 0, /* @tp_members@ */
c90f712e 4202 PYGETSET(gcprp), /* @tp_getset@ */
03ed9abb
MW		 4203 0, /* @tp_base@ */
4204 0, /* @tp_dict@ */
4205 0, /* @tp_descr_get@ */
4206 0, /* @tp_descr_set@ */
4207 0, /* @tp_dictoffset@ */
4208 0, /* @tp_init@ */
4209 PyType_GenericAlloc, /* @tp_alloc@ */
4210 abstract_pynew, /* @tp_new@ */
4211 0, /* @tp_free@ */
4212 0 /* @tp_is_gc@ */
4213};
4214
c263b05c 4215static const PyTypeObject gprp_pytype_skel = {
591bf41b 4216 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 4217 "GPRP", /* @tp_name@ */
03ed9abb
MW		 4218 sizeof(gprp_pyobj), /* @tp_basicsize@ */
4219 0, /* @tp_itemsize@ */
4220
4221 gprp_pydealloc, /* @tp_dealloc@ */
4222 0, /* @tp_print@ */
4223 0, /* @tp_getattr@ */
4224 0, /* @tp_setattr@ */
4225 0, /* @tp_compare@ */
4226 0, /* @tp_repr@ */
4227 0, /* @tp_as_number@ */
4228 0, /* @tp_as_sequence@ */
4229 0, /* @tp_as_mapping@ */
4230 0, /* @tp_hash@ */
4231 0, /* @tp_call@ */
4232 0, /* @tp_str@ */
4233 0, /* @tp_getattro@ */
4234 0, /* @tp_setattro@ */
4235 0, /* @tp_as_buffer@ */
4236 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
4237 Py_TPFLAGS_BASETYPE,
4238
4239 /* @tp_doc@ */
d96c882e 4240 "Pseudorandom permutation, abstract base class.",
03ed9abb
MW		 4241
4242 0, /* @tp_traverse@ */
4243 0, /* @tp_clear@ */
4244 0, /* @tp_richcompare@ */
4245 0, /* @tp_weaklistoffset@ */
4246 0, /* @tp_iter@ */
4247 0, /* @tp_iternext@ */
c90f712e 4248 PYMETHODS(gprp), /* @tp_methods@ */
03ed9abb
MW		 4249 0, /* @tp_members@ */
4250 0, /* @tp_getset@ */
4251 0, /* @tp_base@ */
4252 0, /* @tp_dict@ */
4253 0, /* @tp_descr_get@ */
4254 0, /* @tp_descr_set@ */
4255 0, /* @tp_dictoffset@ */
4256 0, /* @tp_init@ */
4257 PyType_GenericAlloc, /* @tp_alloc@ */
4258 abstract_pynew, /* @tp_new@ */
4259 0, /* @tp_free@ */
4260 0 /* @tp_is_gc@ */
4261};
4262
d7ab1bab 4263/*----- Main code ---------------------------------------------------------*/
4264
810542b0
MW		 4265static const struct nameval consts[] = {
4266 CONST(AEADF_PCHSZ), CONST(AEADF_PCMSZ), CONST(AEADF_PCTSZ),
4267 CONST(AEADF_AADNDEP), CONST(AEADF_AADFIRST), CONST(AEADF_NOAAD),
a29f5426
MW		 4268 CONST(STRBF_I), CONST(STRBF_A), CONST(STRBF_C), CONST(STRBF_T),
4269 CONST(STRBF_M), CONST(STROBE_KEY), CONST(STROBE_AD), CONST(STROBE_PRF),
4270 CONST(STROBE_CLROUT), CONST(STROBE_CLRIN), CONST(STROBE_ENCOUT),
4271 CONST(STROBE_ENCIN), CONST(STRBRL_UNDCD), CONST(STRBRL_INIT),
4272 CONST(STRBRL_RESP),
810542b0
MW		 4273 { 0 }
4274};
4275
c90f712e 4276static const PyMethodDef methods[] = {
89157adc 4277#define METHNAME(func) meth_##func
d96c882e
MW		 4278#define METH_HDANCE(hdance, HDance) METH(hdance##_prf, \
4279 "" #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
a75e68c9
MW		 4280 METH_HDANCE(hsalsa20, "HSalsa20")
4281 METH_HDANCE(hsalsa2012, "HSalsa20/12")
4282 METH_HDANCE(hsalsa208, "HSalsa20/8")
4283 METH_HDANCE(hchacha20, "HChaCha20")
4284 METH_HDANCE(hchacha12, "HChaCha12")
4285 METH_HDANCE(hchacha8, "HChaCha8")
4286#undef METH_DANCE
89157adc
MW		 4287#undef METHNAME
4288 { 0 }
4289};
4290
d7ab1bab 4291void algorithms_pyinit(void)
4292{
4293 INITTYPE(keysz, root);
4294 INITTYPE(keyszany, keysz);
4295 INITTYPE(keyszrange, keysz);
4296 INITTYPE(keyszset, keysz);
4297 INITTYPE(gccipher, type);
4298 INITTYPE(gcipher, root);
bebf03ab
MW		 4299 INITTYPE(gcaead, type);
4300 INITTYPE(gaeadkey, root);
4301 INITTYPE(gcaeadaad, type);
4302 INITTYPE(gaeadaad, root);
4303 INITTYPE(gcaeadenc, type);
4304 INITTYPE(gaeadenc, root);
4305 INITTYPE(gcaeaddec, type);
4306 INITTYPE(gaeaddec, root);
d7ab1bab 4307 INITTYPE(gchash, type);
4308 INITTYPE(ghash, root);
4309 INITTYPE(gcmac, type);
4310 INITTYPE(gmac, type);
4311 INITTYPE(gmhash, ghash);
204d480b
MW		 4312 INITTYPE(poly1305cls, type);
4313 INITTYPE_META(poly1305key, type, poly1305cls);
4314 INITTYPE(poly1305hash, root);
b35fdbe6 4315 INITTYPE(kxvik, root);
6bd22b53
MW		 4316 INITTYPE(shake, root);
4317 INITTYPE(shake128, shake);
4318 INITTYPE(shake256, shake);
668b5f54
MW		 4319 INITTYPE(kmac, shake);
4320 INITTYPE(kmac128, kmac);
4321 INITTYPE(kmac256, kmac);
a29f5426 4322 INITTYPE(strobe, root);
03ed9abb
MW		 4323 INITTYPE(gcprp, type);
4324 INITTYPE(gprp, root);
89157adc 4325 addmethods(methods);
d7ab1bab 4326}
4327
03ed9abb 4328#define gcprp prpinfo
a539ffb8
MW		 4329#define CLASS_TABLES(_) _(cipher) _(aead) _(hash) _(mac) _(prp)
4330#define TABLE_FNS(pre) \
4331 static const char *pre##_namefn(const void *p) \
4332 { const gc##pre *const *cls = p; return (*cls ? (*cls)->name : 0); } \
4333 static PyObject *pre##_valfn(const void *p) \
4334 { gc##pre *const*cls = p; return (gc##pre##_pywrap(*cls)); }
4335CLASS_TABLES(TABLE_FNS)
d7ab1bab 4336
4337void algorithms_pyinsert(PyObject *mod)
4338{
4339 PyObject *d;
4340 INSERT("KeySZ", keysz_pytype);
4341 INSERT("KeySZAny", keyszany_pytype);
4342 INSERT("KeySZRange", keyszrange_pytype);
4343 INSERT("KeySZSet", keyszset_pytype);
4344 INSERT("GCCipher", gccipher_pytype);
4345 INSERT("GCipher", gcipher_pytype);
a539ffb8
MW		 4346 INSERT("gcciphers", make_algtab(gciphertab, sizeof(gccipher *),
4347 cipher_namefn, cipher_valfn));
bebf03ab
MW		 4348 INSERT("GCAEAD", gcaead_pytype);
4349 INSERT("GAEKey", gaeadkey_pytype);
4350 INSERT("GAEAADClass", gcaeadaad_pytype);
4351 INSERT("GAEAAD", gaeadaad_pytype);
4352 INSERT("GAEEncClass", gcaeadenc_pytype);
4353 INSERT("GAEEnc", gaeadenc_pytype);
4354 INSERT("GAEDecClass", gcaeaddec_pytype);
4355 INSERT("GAEDec", gaeaddec_pytype);
a539ffb8
MW		 4356 INSERT("gcaeads", make_algtab(gaeadtab, sizeof(gcaead *),
4357 aead_namefn, aead_valfn));
d7ab1bab 4358 INSERT("GCHash", gchash_pytype);
4359 INSERT("GHash", ghash_pytype);
a539ffb8
MW		 4360 d = make_algtab(ghashtab, sizeof(gchash *), hash_namefn, hash_valfn);
4361 INSERT("gchashes", d);
4362 sha_pyobj = PyMapping_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
4363 has160_pyobj = PyMapping_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
d7ab1bab 4364 INSERT("GCMAC", gcmac_pytype);
4365 INSERT("GMAC", gmac_pytype);
4366 INSERT("GMACHash", gmhash_pytype);
a539ffb8
MW		 4367 INSERT("gcmacs", make_algtab(gmactab, sizeof(gcmac *),
4368 mac_namefn, mac_valfn));
2edb633e 4369 INSERT("_Poly1305Class", poly1305cls_pytype);
204d480b
MW		 4370 INSERT("poly1305", poly1305key_pytype);
4371 INSERT("Poly1305Hash", poly1305hash_pytype);
b35fdbe6 4372 INSERT("Keccak1600", kxvik_pytype);
6bd22b53
MW		 4373 INSERT("Shake", shake_pytype);
4374 INSERT("Shake128", shake128_pytype);
4375 INSERT("Shake256", shake256_pytype);
668b5f54
MW		 4376 INSERT("KMAC", kmac_pytype);
4377 INSERT("KMAC128", kmac128_pytype);
4378 INSERT("KMAC256", kmac256_pytype);
a29f5426 4379 INSERT("Strobe", strobe_pytype);
03ed9abb
MW		 4380 INSERT("GCPRP", gcprp_pytype);
4381 INSERT("GPRP", gprp_pytype);
a539ffb8
MW		 4382 INSERT("gcprps", make_algtab(gprptab, sizeof(gcprp *),
4383 prp_namefn, prp_valfn));
810542b0 4384 setconstants(mod, consts);
d7ab1bab 4385}
4386
4387/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings