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