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