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algorithms.c (AEADAAD.copy): Propagate the hashed length to the copy.
[catacomb-python] / rand.c
1 /* -*-c-*-
2 *
3 * Random-number generators
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 #include "algorithms.h"
31
32 /*----- Main code ---------------------------------------------------------*/
33
34 PyTypeObject *grand_pytype, *truerand_pytype;
35 PyTypeObject *lcrand_pytype, *fibrand_pytype;
36 PyTypeObject *dsarand_pytype, *bbs_pytype, *bbspriv_pytype;
37 PyTypeObject *sslprf_pytype, *tlsdx_pytype, *tlsprf_pytype;
38 PyObject *rand_pyobj;
39
40 static PyObject *gccrands_dict;
41
42 static PyObject *grand_dopywrap(PyTypeObject *ty, grand *r, unsigned f)
43 {
44 grand_pyobj *g;
45
46 g = (grand_pyobj *)ty->tp_alloc(ty, 0);
47 g->r = r;
48 g->f = f;
49 return ((PyObject *)g);
50 }
51
52 PyObject *grand_pywrap(grand *r, unsigned f)
53 {
54 PyTypeObject *ty = grand_pytype;
55 PyObject *ob;
56
57 if (strcmp(r->ops->name, "rand") == 0) ty = truerand_pytype;
58 else if (strcmp(r->ops->name, "lcrand") == 0) ty = lcrand_pytype;
59 else if (strcmp(r->ops->name, "fibrand") == 0) ty = fibrand_pytype;
60 else if (strcmp(r->ops->name, "dsarand") == 0) ty = dsarand_pytype;
61 else if (strcmp(r->ops->name, "bbs") == 0) ty = bbs_pytype;
62 else if (strcmp(r->ops->name, "sslprf") == 0) ty = sslprf_pytype;
63 else if (strcmp(r->ops->name, "tlsdx") == 0) ty = tlsdx_pytype;
64 else if (strcmp(r->ops->name, "tlsprf") == 0) ty = tlsprf_pytype;
65 else if ((ob = PyDict_GetItemString(gccrands_dict, r->ops->name)) != 0)
66 ty = (PyTypeObject *)ob;
67 return (grand_dopywrap(ty, r, f));
68 }
69
70 CONVFUNC(grand, grand *, GRAND_R)
71
72 static int grand_check(PyObject *me)
73 {
74 if (!GRAND_R(me)) VALERR("random generator object is no longer valid");
75 return (0);
76 end:
77 return (-1);
78 }
79
80 static PyObject *grmeth_byte(PyObject *me, PyObject *arg)
81 {
82 if (!PyArg_ParseTuple(arg, ":byte")) return (0);
83 if (grand_check(me)) return (0);
84 return (PyInt_FromLong(grand_byte(GRAND_R(me))));
85 }
86
87 static PyObject *grmeth_word(PyObject *me, PyObject *arg)
88 {
89 if (!PyArg_ParseTuple(arg, ":word")) return (0);
90 if (grand_check(me)) return (0);
91 return (getulong(grand_word(GRAND_R(me))));
92 }
93
94 static PyObject *grmeth_range(PyObject *me, PyObject *arg)
95 {
96 PyObject *m;
97 mp *x = 0;
98 mp *y = 0;
99
100 if (!PyArg_ParseTuple(arg, "O:range", &m)) return (0);
101 if (grand_check(me)) return (0);
102 if (PyInt_Check(m)) {
103 long mm = PyInt_AS_LONG(m);
104 if (mm <= 0)
105 goto notpos;
106 if (mm <= 0xffffffff)
107 return (PyInt_FromLong(grand_range(GRAND_R(me), mm)));
108 }
109 if ((x = getmp(m)) == 0)
110 goto end;
111 if (!MP_POSP(x))
112 goto notpos;
113 y = mprand_range(MP_NEW, x, GRAND_R(me), 0);
114 MP_DROP(x);
115 return (mp_pywrap(y));
116 notpos:
117 VALERR("range must be strictly positive");
118 end:
119 if (x) MP_DROP(x);
120 return (0);
121 }
122
123 static PyObject *grmeth_mp(PyObject *me, PyObject *arg, PyObject *kw)
124 {
125 size_t l;
126 mpw o = 0;
127 static const char *const kwlist[] = { "bits", "or", 0 };
128
129 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:mp", KWLIST,
130 convszt, &l, convmpw, &o))
131 goto end;
132 if (grand_check(me)) return (0);
133 if (l < MPW_BITS && (o >> l)) VALERR("or mask too large");
134 return (mp_pywrap(mprand(MP_NEW, l, GRAND_R(me), o)));
135 end:
136 return (0);
137 }
138
139 static PyObject *grmeth_block(PyObject *me, PyObject *arg)
140 {
141 unsigned long n;
142 PyObject *rc = 0;
143
144 if (!PyArg_ParseTuple(arg, "O&:block", convulong, &n)) goto end;
145 if (grand_check(me)) return (0);
146 rc = bytestring_pywrap(0, n);
147 grand_fill(GRAND_R(me), PyString_AS_STRING(rc), n);
148 end:
149 return (rc);
150 }
151
152 static int checkop(grand *r, unsigned op, const char *what)
153 {
154 if (r->ops->misc(r, GRAND_CHECK, op)) return (0);
155 PyErr_Format(PyExc_TypeError, "operation %s not supported", what);
156 return (-1);
157 }
158
159 static PyObject *grmeth_seedint(PyObject *me, PyObject *arg)
160 {
161 int i;
162 grand *r = GRAND_R(me);
163 if (!PyArg_ParseTuple(arg, "i:seedint", &i) ||
164 grand_check(me) || checkop(r, GRAND_SEEDINT, "seedint"))
165 goto end;
166 r->ops->misc(r, GRAND_SEEDINT, i);
167 RETURN_ME;
168 end:
169 return (0);
170 }
171
172 static PyObject *grmeth_seedword(PyObject *me, PyObject *arg)
173 {
174 uint32 u;
175 grand *r = GRAND_R(me);
176 if (!PyArg_ParseTuple(arg, "O&:seedword", convu32, &u) ||
177 grand_check(me) || checkop(r, GRAND_SEEDUINT32, "seedword"))
178 goto end;
179 r->ops->misc(r, GRAND_SEEDUINT32, u);
180 RETURN_ME;
181 end:
182 return (0);
183 }
184
185 static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
186 {
187 char *p;
188 Py_ssize_t n;
189 grand *r = GRAND_R(me);
190 if (!PyArg_ParseTuple(arg, "s#:seedblock", &p, &n) ||
191 grand_check(me) || checkop(r, GRAND_SEEDBLOCK, "seedblock"))
192 goto end;
193 r->ops->misc(r, GRAND_SEEDBLOCK, p, (size_t)n);
194 RETURN_ME;
195 end:
196 return (0);
197 }
198
199 static PyObject *grmeth_seedmp(PyObject *me, PyObject *arg)
200 {
201 PyObject *x;
202 mp *xx;
203 grand *r = GRAND_R(me);
204 if (!PyArg_ParseTuple(arg, "O:seedmp", &x) ||
205 grand_check(me) || checkop(r, GRAND_SEEDMP, "seedmp") ||
206 (xx = getmp(x)) == 0)
207 goto end;
208 r->ops->misc(r, GRAND_SEEDMP, xx);
209 MP_DROP(xx);
210 RETURN_ME;
211 end:
212 return (0);
213 }
214
215 static PyObject *grmeth_seedrand(PyObject *me, PyObject *arg, PyObject *kw)
216 {
217 static const char *const kwlist[] = { "rng", 0 };
218 grand *r = GRAND_R(me);
219 grand *rr = &rand_global;
220 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:seedrand", KWLIST,
221 convgrand, &rr) ||
222 grand_check(me) || checkop(r, GRAND_SEEDRAND, "seedrand"))
223 goto end;
224 r->ops->misc(r, GRAND_SEEDRAND, rr);
225 RETURN_ME;
226 end:
227 return (0);
228 }
229
230 static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
231 {
232 grand *r = GRAND_R(me);
233 char *p, *q;
234 Py_ssize_t sz;
235 PyObject *rc;
236
237 if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) return (0);
238 if (grand_check(me)) return (0);
239 rc = bytestring_pywrap(0, sz);
240 q = PyString_AS_STRING(rc);
241 GR_FILL(r, q, sz);
242 while (sz--) *q++ ^= *p++;
243 return (rc);
244 }
245
246 static void grand_pydealloc(PyObject *me)
247 {
248 grand_pyobj *g = (grand_pyobj *)me;
249 if ((g->f & f_freeme) && g->r) GR_DESTROY(g->r);
250 FREEOBJ(me);
251 }
252
253 static PyObject *grget_name(PyObject *me, void *hunoz)
254 { return (grand_check(me) ? 0 : PyString_FromString(GRAND_R(me)->ops->name)); }
255
256 static PyObject *grget_cryptop(PyObject *me, void *hunoz)
257 { return (grand_check(me) ? 0 : getbool(GRAND_R(me)->ops->f & GRAND_CRYPTO)); }
258
259 static PyGetSetDef grand_pygetset[] = {
260 #define GETSETNAME(op, name) gr##op##_##name
261 GET (name, "R.name -> name of this kind of generator")
262 GET (cryptop, "R.cryptop -> flag: cryptographically strong?")
263 #undef GETSETNAME
264 { 0 }
265 };
266
267 static PyMethodDef grand_pymethods[] = {
268 #define METHNAME(name) grmeth_##name
269 METH (byte, "R.byte() -> BYTE")
270 METH (word, "R.word() -> WORD")
271 METH (block, "R.block(N) -> STRING")
272 KWMETH(mp, "R.mp(bits, [or = 0]) -> MP")
273 METH (range, "R.range(MAX) -> INT")
274 METH (mask, "R.mask(STR) -> STR")
275 METH (seedint, "R.seedint(I)")
276 METH (seedword, "R.seedword(I)")
277 METH (seedblock, "R.seedblock(BYTES)")
278 METH (seedmp, "R.seedmp(X)")
279 KWMETH(seedrand, "R.seedrand(RR)")
280 #undef METHNAME
281 { 0 }
282 };
283
284 static PyTypeObject grand_pytype_skel = {
285 PyObject_HEAD_INIT(0) 0, /* Header */
286 "GRand", /* @tp_name@ */
287 sizeof(grand_pyobj), /* @tp_basicsize@ */
288 0, /* @tp_itemsize@ */
289
290 grand_pydealloc, /* @tp_dealloc@ */
291 0, /* @tp_print@ */
292 0, /* @tp_getattr@ */
293 0, /* @tp_setattr@ */
294 0, /* @tp_compare@ */
295 0, /* @tp_repr@ */
296 0, /* @tp_as_number@ */
297 0, /* @tp_as_sequence@ */
298 0, /* @tp_as_mapping@ */
299 0, /* @tp_hash@ */
300 0, /* @tp_call@ */
301 0, /* @tp_str@ */
302 0, /* @tp_getattro@ */
303 0, /* @tp_setattro@ */
304 0, /* @tp_as_buffer@ */
305 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
306 Py_TPFLAGS_BASETYPE,
307
308 /* @tp_doc@ */
309 "Generic random number source.",
310
311 0, /* @tp_traverse@ */
312 0, /* @tp_clear@ */
313 0, /* @tp_richcompare@ */
314 0, /* @tp_weaklistoffset@ */
315 0, /* @tp_iter@ */
316 0, /* @tp_iternext@ */
317 grand_pymethods, /* @tp_methods@ */
318 0, /* @tp_members@ */
319 grand_pygetset, /* @tp_getset@ */
320 0, /* @tp_base@ */
321 0, /* @tp_dict@ */
322 0, /* @tp_descr_get@ */
323 0, /* @tp_descr_set@ */
324 0, /* @tp_dictoffset@ */
325 0, /* @tp_init@ */
326 PyType_GenericAlloc, /* @tp_alloc@ */
327 abstract_pynew, /* @tp_new@ */
328 0, /* @tp_free@ */
329 0 /* @tp_is_gc@ */
330 };
331
332 static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
333 {
334 uint32 n = 0;
335 static const char *const kwlist[] = { "seed", 0 };
336 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
337 return (0);
338 return (grand_dopywrap(lcrand_pytype, lcrand_create(n), f_freeme));
339 }
340
341 static PyTypeObject lcrand_pytype_skel = {
342 PyObject_HEAD_INIT(0) 0, /* Header */
343 "LCRand", /* @tp_name@ */
344 sizeof(grand_pyobj), /* @tp_basicsize@ */
345 0, /* @tp_itemsize@ */
346
347 grand_pydealloc, /* @tp_dealloc@ */
348 0, /* @tp_print@ */
349 0, /* @tp_getattr@ */
350 0, /* @tp_setattr@ */
351 0, /* @tp_compare@ */
352 0, /* @tp_repr@ */
353 0, /* @tp_as_number@ */
354 0, /* @tp_as_sequence@ */
355 0, /* @tp_as_mapping@ */
356 0, /* @tp_hash@ */
357 0, /* @tp_call@ */
358 0, /* @tp_str@ */
359 0, /* @tp_getattro@ */
360 0, /* @tp_setattro@ */
361 0, /* @tp_as_buffer@ */
362 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
363 Py_TPFLAGS_BASETYPE,
364
365 /* @tp_doc@ */
366 "LCRand([seed = 0]): linear congruential generator.",
367
368 0, /* @tp_traverse@ */
369 0, /* @tp_clear@ */
370 0, /* @tp_richcompare@ */
371 0, /* @tp_weaklistoffset@ */
372 0, /* @tp_iter@ */
373 0, /* @tp_iternext@ */
374 0, /* @tp_methods@ */
375 0, /* @tp_members@ */
376 0, /* @tp_getset@ */
377 0, /* @tp_base@ */
378 0, /* @tp_dict@ */
379 0, /* @tp_descr_get@ */
380 0, /* @tp_descr_set@ */
381 0, /* @tp_dictoffset@ */
382 0, /* @tp_init@ */
383 PyType_GenericAlloc, /* @tp_alloc@ */
384 lcrand_pynew, /* @tp_new@ */
385 0, /* @tp_free@ */
386 0 /* @tp_is_gc@ */
387 };
388
389 static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
390 {
391 uint32 n = 0;
392 static const char *const kwlist[] = { "seed", 0 };
393 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
394 return (0);
395 return (grand_dopywrap(fibrand_pytype, fibrand_create(n), f_freeme));
396 }
397
398 static PyTypeObject fibrand_pytype_skel = {
399 PyObject_HEAD_INIT(0) 0, /* Header */
400 "FibRand", /* @tp_name@ */
401 sizeof(grand_pyobj), /* @tp_basicsize@ */
402 0, /* @tp_itemsize@ */
403
404 grand_pydealloc, /* @tp_dealloc@ */
405 0, /* @tp_print@ */
406 0, /* @tp_getattr@ */
407 0, /* @tp_setattr@ */
408 0, /* @tp_compare@ */
409 0, /* @tp_repr@ */
410 0, /* @tp_as_number@ */
411 0, /* @tp_as_sequence@ */
412 0, /* @tp_as_mapping@ */
413 0, /* @tp_hash@ */
414 0, /* @tp_call@ */
415 0, /* @tp_str@ */
416 0, /* @tp_getattro@ */
417 0, /* @tp_setattro@ */
418 0, /* @tp_as_buffer@ */
419 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
420 Py_TPFLAGS_BASETYPE,
421
422 /* @tp_doc@ */
423 "FibRand([seed = 0]): Fibonacci generator.",
424
425 0, /* @tp_traverse@ */
426 0, /* @tp_clear@ */
427 0, /* @tp_richcompare@ */
428 0, /* @tp_weaklistoffset@ */
429 0, /* @tp_iter@ */
430 0, /* @tp_iternext@ */
431 0, /* @tp_methods@ */
432 0, /* @tp_members@ */
433 0, /* @tp_getset@ */
434 0, /* @tp_base@ */
435 0, /* @tp_dict@ */
436 0, /* @tp_descr_get@ */
437 0, /* @tp_descr_set@ */
438 0, /* @tp_dictoffset@ */
439 0, /* @tp_init@ */
440 PyType_GenericAlloc, /* @tp_alloc@ */
441 fibrand_pynew, /* @tp_new@ */
442 0, /* @tp_free@ */
443 0 /* @tp_is_gc@ */
444 };
445
446 /*----- True random generator ---------------------------------------------*/
447
448 static PyObject *trmeth_gate(PyObject *me, PyObject *arg)
449 {
450 grand *r = GRAND_R(me);
451 if (!PyArg_ParseTuple(arg, ":gate")) return (0);
452 r->ops->misc(r, RAND_GATE);
453 RETURN_ME;
454 }
455
456 static PyObject *trmeth_stretch(PyObject *me, PyObject *arg)
457 {
458 grand *r = GRAND_R(me);
459 if (!PyArg_ParseTuple(arg, ":stretch")) return (0);
460 r->ops->misc(r, RAND_STRETCH);
461 RETURN_ME;
462 }
463
464 static PyObject *trmeth_add(PyObject *me, PyObject *arg)
465 {
466 grand *r = GRAND_R(me);
467 char *p; Py_ssize_t n; unsigned goodbits;
468 if (!PyArg_ParseTuple(arg, "s#O&:add", &p, &n, convuint, &goodbits))
469 return (0);
470 r->ops->misc(r, RAND_ADD, p, (size_t)n, goodbits);
471 RETURN_ME;
472 }
473
474 static PyObject *trmeth_key(PyObject *me, PyObject *arg)
475 {
476 grand *r = GRAND_R(me);
477 char *p; Py_ssize_t n;
478 if (!PyArg_ParseTuple(arg, "s#:key", &p, &n)) return (0);
479 r->ops->misc(r, RAND_KEY, p, (size_t)n);
480 RETURN_ME;
481 }
482
483 static PyObject *trmeth_seed(PyObject *me, PyObject *arg)
484 {
485 grand *r = GRAND_R(me);
486 unsigned u;
487 if (!PyArg_ParseTuple(arg, "O&:seed", convuint, &u)) return (0);
488 if (u > RAND_IBITS) VALERR("pointlessly large");
489 r->ops->misc(r, RAND_SEED, u);
490 RETURN_ME;
491 end:
492 return (0);
493 }
494
495 static PyObject *trmeth_timer(PyObject *me, PyObject *arg)
496 {
497 grand *r = GRAND_R(me);
498 if (!PyArg_ParseTuple(arg, ":timer")) return (0);
499 r->ops->misc(r, RAND_TIMER);
500 RETURN_ME;
501 }
502
503 static PyObject *truerand_pynew(PyTypeObject *ty,
504 PyObject *arg, PyObject *kw)
505 {
506 static const char *const kwlist[] = { 0 };
507 grand *r;
508 PyObject *rc = 0;
509 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) goto end;
510 r = rand_create();
511 r->ops->misc(r, RAND_NOISESRC, &noise_source);
512 r->ops->misc(r, RAND_SEED, 160);
513 rc = grand_dopywrap(ty, r, f_freeme);
514 end:
515 return (rc);
516 }
517
518 static PyMethodDef truerand_pymethods[] = {
519 #define METHNAME(name) trmeth_##name
520 METH (gate, "R.gate()")
521 METH (stretch, "R.stretch()")
522 METH (key, "R.key(BYTES)")
523 METH (seed, "R.seed(NBITS)")
524 METH (add, "R.add(BYTES, GOODBITS")
525 METH (timer, "R.timer()")
526 #undef METHNAME
527 { 0 }
528 };
529
530 static PyObject *trget_goodbits(PyObject *me, void *hunoz)
531 {
532 grand *r = GRAND_R(me);
533 return (PyInt_FromLong(r->ops->misc(r, RAND_GOODBITS)));
534 }
535
536 static PyGetSetDef truerand_pygetset[] = {
537 #define GETSETNAME(op, name) tr##op##_##name
538 GET (goodbits, "R.goodbits -> good bits of entropy remaining")
539 #undef GETSETNAME
540 { 0 }
541 };
542
543 static PyTypeObject truerand_pytype_skel = {
544 PyObject_HEAD_INIT(0) 0, /* Header */
545 "TrueRand", /* @tp_name@ */
546 sizeof(grand_pyobj), /* @tp_basicsize@ */
547 0, /* @tp_itemsize@ */
548
549 grand_pydealloc, /* @tp_dealloc@ */
550 0, /* @tp_print@ */
551 0, /* @tp_getattr@ */
552 0, /* @tp_setattr@ */
553 0, /* @tp_compare@ */
554 0, /* @tp_repr@ */
555 0, /* @tp_as_number@ */
556 0, /* @tp_as_sequence@ */
557 0, /* @tp_as_mapping@ */
558 0, /* @tp_hash@ */
559 0, /* @tp_call@ */
560 0, /* @tp_str@ */
561 0, /* @tp_getattro@ */
562 0, /* @tp_setattro@ */
563 0, /* @tp_as_buffer@ */
564 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
565 Py_TPFLAGS_BASETYPE,
566
567 /* @tp_doc@ */
568 "TrueRand(): true random number source.",
569
570 0, /* @tp_traverse@ */
571 0, /* @tp_clear@ */
572 0, /* @tp_richcompare@ */
573 0, /* @tp_weaklistoffset@ */
574 0, /* @tp_iter@ */
575 0, /* @tp_iternext@ */
576 truerand_pymethods, /* @tp_methods@ */
577 0, /* @tp_members@ */
578 truerand_pygetset, /* @tp_getset@ */
579 0, /* @tp_base@ */
580 0, /* @tp_dict@ */
581 0, /* @tp_descr_get@ */
582 0, /* @tp_descr_set@ */
583 0, /* @tp_dictoffset@ */
584 0, /* @tp_init@ */
585 PyType_GenericAlloc, /* @tp_alloc@ */
586 truerand_pynew, /* @tp_new@ */
587 0, /* @tp_free@ */
588 0 /* @tp_is_gc@ */
589 };
590
591 /*----- Generators from symmetric encryption algorithms -------------------*/
592
593 static PyTypeObject *gccrand_pytype, *gcrand_pytype, *gclatinrand_pytype;
594
595 typedef grand *gcrand_func(const void *, size_t sz);
596 typedef grand *gcirand_func(const void *, size_t sz, uint32);
597 typedef grand *gcnrand_func(const void *, size_t sz, const void *);
598 typedef grand *gcshakerand_func(const void *, size_t,
599 const void *, size_t,
600 const void *, size_t);
601 typedef grand *gcshafuncrand_func(const void *, size_t,
602 const void *, size_t);
603 typedef grand *gckmacrand_func(const void *, size_t, const void *, size_t);
604 typedef struct gccrand_info {
605 const char *name;
606 const octet *keysz;
607 unsigned f;
608 size_t noncesz;
609 gcrand_func *func;
610 } gccrand_info;
611
612 #define RNGF_MASK 255u
613
614 enum {
615 RNG_PLAIN = 0,
616 RNG_SEAL,
617 RNG_LATIN,
618 RNG_SHAKE,
619 RNG_KMAC
620 };
621
622 typedef struct gccrand_pyobj {
623 PyHeapTypeObject ty;
624 const gccrand_info *info;
625 } gccrand_pyobj;
626 #define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
627
628 #define GCCRAND_DEF(name, ksz, func, f, nsz) \
629 static const gccrand_info func##_info = \
630 { name, ksz, f, nsz, (gcrand_func *)func };
631 RNGS(GCCRAND_DEF)
632
633 static const gccrand_info *const gcrandtab[] = {
634 #define GCCRAND_ENTRY(name, ksz, func, f, nsz) &func##_info,
635 RNGS(GCCRAND_ENTRY)
636 0
637 };
638
639 static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
640 {
641 const gccrand_info *info = GCCRAND_INFO(ty);
642 static const char *const kwlist[] = { "key", 0 };
643 char *k;
644 Py_ssize_t n;
645
646 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &k, &n))
647 goto end;
648 if (keysz(n, info->keysz) != n) VALERR("bad key length");
649 return (grand_dopywrap(ty, info->func(k, n), f_freeme));
650 end:
651 return (0);
652 }
653
654 static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
655 {
656 const gccrand_info *info = GCCRAND_INFO(ty);
657 uint32 i = 0;
658 static const char *const kwlist[] = { "key", "i", 0 };
659 char *k;
660 Py_ssize_t n;
661
662 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&:new", KWLIST,
663 &k, &n, convu32, &i))
664 goto end;
665 if (keysz(n, info->keysz) != n) VALERR("bad key length");
666 return (grand_dopywrap(ty,
667 ((gcirand_func *)info->func)(k, n, i),
668 f_freeme));
669 end:
670 return (0);
671 }
672
673 static PyObject *gcnrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
674 {
675 const gccrand_info *info = GCCRAND_INFO(ty);
676 static const char *const kwlist[] = { "key", "nonce", 0 };
677 char *k, *n;
678 Py_ssize_t ksz, nsz;
679
680 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#:new", KWLIST,
681 &k, &ksz, &n, &nsz))
682 goto end;
683 if (keysz(ksz, info->keysz) != ksz) VALERR("bad key length");
684 if (nsz != info->noncesz) VALERR("bad nonce length");
685 return (grand_dopywrap(ty,
686 ((gcnrand_func *)info->func)(k, ksz, n),
687 f_freeme));
688 end:
689 return (0);
690 }
691
692 static PyObject *gcshakyrand_pynew(PyTypeObject *ty,
693 PyObject *arg, PyObject *kw)
694 {
695 const gccrand_info *info = GCCRAND_INFO(ty);
696 static const char
697 *const kwlist_shake[] = { "key", "func", "perso", 0 },
698 *const kwlist_func[] = { "key", "perso", 0 };
699 char *k, *f = 0, *p = 0;
700 Py_ssize_t ksz, fsz = 0, psz = 0;
701
702 if ((info->f&RNGF_MASK) == RNG_SHAKE
703 ? !PyArg_ParseTupleAndKeywords(arg, kw, "s#|s#s#:new",
704 (/*unconst*/ char **)kwlist_shake,
705 &k, &ksz, &f, &fsz, &p, &psz)
706 : !PyArg_ParseTupleAndKeywords(arg, kw, "s#|s#:new",
707 (/*unconst*/ char **)kwlist_func,
708 &k, &ksz, &p, &psz))
709 goto end;
710 if (keysz(ksz, info->keysz) != ksz) VALERR("bad key length");
711 return (grand_dopywrap(ty,
712 (info->f&RNGF_MASK) == RNG_SHAKE
713 ? ((gcshakerand_func *)info->func)(f, fsz,
714 p, psz,
715 k, ksz)
716 : ((gcshafuncrand_func *)info->func)(p, psz,
717 k, ksz),
718 f_freeme));
719 end:
720 return (0);
721 }
722
723 static PyObject *gccrand_pywrap(const gccrand_info *info)
724 {
725 gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
726 g->info = info;
727 g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
728 switch (info->f&RNGF_MASK) {
729 case RNG_LATIN: g->ty.ht_type.tp_base = gclatinrand_pytype; break;
730 default: g->ty.ht_type.tp_base = gcrand_pytype; break;
731 }
732 Py_INCREF(g->ty.ht_type.tp_base);
733 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
734 Py_TPFLAGS_BASETYPE |
735 Py_TPFLAGS_HEAPTYPE);
736 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
737 g->ty.ht_type.tp_free = 0;
738 switch (info->f&RNGF_MASK) {
739 case RNG_LATIN: g->ty.ht_type.tp_new = gcnrand_pynew; break;
740 case RNG_SEAL: g->ty.ht_type.tp_new = gcirand_pynew; break;
741 case RNG_SHAKE: case RNG_KMAC:
742 g->ty.ht_type.tp_new = gcshakyrand_pynew; break;
743 default: g->ty.ht_type.tp_new = gcrand_pynew; break;
744 }
745 typeready(&g->ty.ht_type);
746 return ((PyObject *)g);
747 }
748
749 static PyObject *gccrget_name(PyObject *me, void *hunoz)
750 { return (PyString_FromString(GCCRAND_INFO(me)->name)); }
751 static PyObject *gccrget_keysz(PyObject *me, void *hunoz)
752 { return (keysz_pywrap(GCCRAND_INFO(me)->keysz)); }
753
754 static PyObject *gclrmeth_tell(PyObject *me, PyObject *arg)
755 {
756 grand *r = GRAND_R(me);
757 PyObject *rc = 0;
758 kludge64 off;
759
760 if (!PyArg_ParseTuple(arg, ":tell")) return (0);
761 r->ops->misc(r, SALSA20_TELLU64, &off);
762 rc = getk64(off);
763 return (rc);
764 }
765
766 static PyObject *gclrmeth_seek(PyObject *me, PyObject *arg)
767 {
768 grand *r = GRAND_R(me);
769 kludge64 off;
770
771 if (!PyArg_ParseTuple(arg, "O&:seek", convk64, &off)) return (0);
772 r->ops->misc(r, SALSA20_SEEKU64, off);
773 RETURN_ME;
774 }
775
776 static PyGetSetDef gccrand_pygetset[] = {
777 #define GETSETNAME(op, name) gccr##op##_##name
778 GET (keysz, "CR.keysz -> acceptable key sizes")
779 GET (name, "CR.name -> name of this kind of generator")
780 #undef GETSETNAME
781 { 0 }
782 };
783
784 static PyMethodDef gclatinrand_pymethods[] = {
785 #define METHNAME(name) gclrmeth_##name
786 METH (tell, "R.tell() -> OFF")
787 METH (seek, "R.seek(OFF)")
788 #undef METHNAME
789 { 0 }
790 };
791
792 static PyTypeObject gccrand_pytype_skel = {
793 PyObject_HEAD_INIT(0) 0, /* Header */
794 "GCCRand", /* @tp_name@ */
795 sizeof(gccrand_pyobj), /* @tp_basicsize@ */
796 0, /* @tp_itemsize@ */
797
798 0, /* @tp_dealloc@ */
799 0, /* @tp_print@ */
800 0, /* @tp_getattr@ */
801 0, /* @tp_setattr@ */
802 0, /* @tp_compare@ */
803 0, /* @tp_repr@ */
804 0, /* @tp_as_number@ */
805 0, /* @tp_as_sequence@ */
806 0, /* @tp_as_mapping@ */
807 0, /* @tp_hash@ */
808 0, /* @tp_call@ */
809 0, /* @tp_str@ */
810 0, /* @tp_getattro@ */
811 0, /* @tp_setattro@ */
812 0, /* @tp_as_buffer@ */
813 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
814 Py_TPFLAGS_BASETYPE,
815
816 /* @tp_doc@ */
817 "Metaclass for symmetric crypto-based generators.",
818
819 0, /* @tp_traverse@ */
820 0, /* @tp_clear@ */
821 0, /* @tp_richcompare@ */
822 0, /* @tp_weaklistoffset@ */
823 0, /* @tp_iter@ */
824 0, /* @tp_iternext@ */
825 0, /* @tp_methods@ */
826 0, /* @tp_members@ */
827 gccrand_pygetset, /* @tp_getset@ */
828 0, /* @tp_base@ */
829 0, /* @tp_dict@ */
830 0, /* @tp_descr_get@ */
831 0, /* @tp_descr_set@ */
832 0, /* @tp_dictoffset@ */
833 0, /* @tp_init@ */
834 PyType_GenericAlloc, /* @tp_alloc@ */
835 abstract_pynew, /* @tp_new@ */
836 0, /* @tp_free@ */
837 0 /* @tp_is_gc@ */
838 };
839
840 static PyTypeObject gcrand_pytype_skel = {
841 PyObject_HEAD_INIT(0) 0, /* Header */
842 "GCRand", /* @tp_name@ */
843 sizeof(grand_pyobj), /* @tp_basicsize@ */
844 0, /* @tp_itemsize@ */
845
846 grand_pydealloc, /* @tp_dealloc@ */
847 0, /* @tp_print@ */
848 0, /* @tp_getattr@ */
849 0, /* @tp_setattr@ */
850 0, /* @tp_compare@ */
851 0, /* @tp_repr@ */
852 0, /* @tp_as_number@ */
853 0, /* @tp_as_sequence@ */
854 0, /* @tp_as_mapping@ */
855 0, /* @tp_hash@ */
856 0, /* @tp_call@ */
857 0, /* @tp_str@ */
858 0, /* @tp_getattro@ */
859 0, /* @tp_setattro@ */
860 0, /* @tp_as_buffer@ */
861 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
862 Py_TPFLAGS_BASETYPE,
863
864 /* @tp_doc@ */
865 "Abstract base class for symmetric crypto-based generators.",
866
867 0, /* @tp_traverse@ */
868 0, /* @tp_clear@ */
869 0, /* @tp_richcompare@ */
870 0, /* @tp_weaklistoffset@ */
871 0, /* @tp_iter@ */
872 0, /* @tp_iternext@ */
873 0, /* @tp_methods@ */
874 0, /* @tp_members@ */
875 0, /* @tp_getset@ */
876 0, /* @tp_base@ */
877 0, /* @tp_dict@ */
878 0, /* @tp_descr_get@ */
879 0, /* @tp_descr_set@ */
880 0, /* @tp_dictoffset@ */
881 0, /* @tp_init@ */
882 PyType_GenericAlloc, /* @tp_alloc@ */
883 abstract_pynew, /* @tp_new@ */
884 0, /* @tp_free@ */
885 0 /* @tp_is_gc@ */
886 };
887
888 static PyTypeObject gclatinrand_pytype_skel = {
889 PyObject_HEAD_INIT(0) 0, /* Header */
890 "GCLatinRand", /* @tp_name@ */
891 sizeof(grand_pyobj), /* @tp_basicsize@ */
892 0, /* @tp_itemsize@ */
893
894 grand_pydealloc, /* @tp_dealloc@ */
895 0, /* @tp_print@ */
896 0, /* @tp_getattr@ */
897 0, /* @tp_setattr@ */
898 0, /* @tp_compare@ */
899 0, /* @tp_repr@ */
900 0, /* @tp_as_number@ */
901 0, /* @tp_as_sequence@ */
902 0, /* @tp_as_mapping@ */
903 0, /* @tp_hash@ */
904 0, /* @tp_call@ */
905 0, /* @tp_str@ */
906 0, /* @tp_getattro@ */
907 0, /* @tp_setattro@ */
908 0, /* @tp_as_buffer@ */
909 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
910 Py_TPFLAGS_BASETYPE,
911
912 /* @tp_doc@ */
913 "Abstract base class for symmetric crypto-based generators.",
914
915 0, /* @tp_traverse@ */
916 0, /* @tp_clear@ */
917 0, /* @tp_richcompare@ */
918 0, /* @tp_weaklistoffset@ */
919 0, /* @tp_iter@ */
920 0, /* @tp_iternext@ */
921 gclatinrand_pymethods, /* @tp_methods@ */
922 0, /* @tp_members@ */
923 0, /* @tp_getset@ */
924 0, /* @tp_base@ */
925 0, /* @tp_dict@ */
926 0, /* @tp_descr_get@ */
927 0, /* @tp_descr_set@ */
928 0, /* @tp_dictoffset@ */
929 0, /* @tp_init@ */
930 PyType_GenericAlloc, /* @tp_alloc@ */
931 abstract_pynew, /* @tp_new@ */
932 0, /* @tp_free@ */
933 0 /* @tp_is_gc@ */
934 };
935
936 /*----- SSL and TLS generators --------------------------------------------*/
937
938 static PyObject *sslprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
939 {
940 char *k, *s;
941 int ksz, ssz;
942 const gchash *hco = &md5, *hci = &sha;
943 PyObject *rc = 0;
944 static const char *const kwlist[] = { "key", "seed", "ohash", "ihash", 0 };
945
946 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", KWLIST,
947 &k, &ksz, &s, &ssz,
948 convgchash, &hco, convgchash, &hci))
949 goto end;
950 rc = grand_dopywrap(ty, sslprf_rand(hco, hci, k, ksz, s, ssz), f_freeme);
951 end:
952 return (rc);
953 }
954
955 static PyObject *tlsdx_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
956 {
957 char *k, *s;
958 int ksz, ssz;
959 const gcmac *mc = &sha_hmac;
960 PyObject *rc = 0;
961 static const char *const kwlist[] = { "key", "seed", "mac", 0 };
962
963 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&:new", KWLIST,
964 &k, &ksz, &s, &ssz,
965 convgcmac, &mc))
966 goto end;
967 rc = grand_dopywrap(ty, tlsdx_rand(mc, k, ksz, s, ssz), f_freeme);
968 end:
969 return (rc);
970 }
971
972 static PyObject *tlsprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
973 {
974 char *k, *s;
975 int ksz, ssz;
976 const gcmac *mcl = &md5_hmac, *mcr = &sha_hmac;
977 PyObject *rc = 0;
978 static const char *const kwlist[] = { "key", "seed", "lmac", "rmac", 0 };
979
980 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", KWLIST,
981 &k, &ksz, &s, &ssz,
982 convgcmac, &mcl, convgcmac, &mcr))
983 goto end;
984 rc = grand_dopywrap(ty, tlsprf_rand(mcl, mcr, k, ksz, s, ssz), f_freeme);
985 end:
986 return (rc);
987 }
988
989 static PyTypeObject sslprf_pytype_skel = {
990 PyObject_HEAD_INIT(0) 0, /* Header */
991 "SSLRand", /* @tp_name@ */
992 sizeof(grand_pyobj), /* @tp_basicsize@ */
993 0, /* @tp_itemsize@ */
994
995 grand_pydealloc, /* @tp_dealloc@ */
996 0, /* @tp_print@ */
997 0, /* @tp_getattr@ */
998 0, /* @tp_setattr@ */
999 0, /* @tp_compare@ */
1000 0, /* @tp_repr@ */
1001 0, /* @tp_as_number@ */
1002 0, /* @tp_as_sequence@ */
1003 0, /* @tp_as_mapping@ */
1004 0, /* @tp_hash@ */
1005 0, /* @tp_call@ */
1006 0, /* @tp_str@ */
1007 0, /* @tp_getattro@ */
1008 0, /* @tp_setattro@ */
1009 0, /* @tp_as_buffer@ */
1010 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1011 Py_TPFLAGS_BASETYPE,
1012
1013 /* @tp_doc@ */
1014 "SSLRand(KEY, SEED, [ohash = md5], [ihash = sha]):\n\
1015 RNG for SSL master secret.",
1016
1017 0, /* @tp_traverse@ */
1018 0, /* @tp_clear@ */
1019 0, /* @tp_richcompare@ */
1020 0, /* @tp_weaklistoffset@ */
1021 0, /* @tp_iter@ */
1022 0, /* @tp_iternext@ */
1023 0, /* @tp_methods@ */
1024 0, /* @tp_members@ */
1025 0, /* @tp_getset@ */
1026 0, /* @tp_base@ */
1027 0, /* @tp_dict@ */
1028 0, /* @tp_descr_get@ */
1029 0, /* @tp_descr_set@ */
1030 0, /* @tp_dictoffset@ */
1031 0, /* @tp_init@ */
1032 PyType_GenericAlloc, /* @tp_alloc@ */
1033 sslprf_pynew, /* @tp_new@ */
1034 0, /* @tp_free@ */
1035 0 /* @tp_is_gc@ */
1036 };
1037
1038 static PyTypeObject tlsdx_pytype_skel = {
1039 PyObject_HEAD_INIT(0) 0, /* Header */
1040 "TLSDataExpansion", /* @tp_name@ */
1041 sizeof(grand_pyobj), /* @tp_basicsize@ */
1042 0, /* @tp_itemsize@ */
1043
1044 grand_pydealloc, /* @tp_dealloc@ */
1045 0, /* @tp_print@ */
1046 0, /* @tp_getattr@ */
1047 0, /* @tp_setattr@ */
1048 0, /* @tp_compare@ */
1049 0, /* @tp_repr@ */
1050 0, /* @tp_as_number@ */
1051 0, /* @tp_as_sequence@ */
1052 0, /* @tp_as_mapping@ */
1053 0, /* @tp_hash@ */
1054 0, /* @tp_call@ */
1055 0, /* @tp_str@ */
1056 0, /* @tp_getattro@ */
1057 0, /* @tp_setattro@ */
1058 0, /* @tp_as_buffer@ */
1059 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1060 Py_TPFLAGS_BASETYPE,
1061
1062 /* @tp_doc@ */
1063 "TLSDataExpansion(KEY, SEED, [mac = sha_hmac]):\n\
1064 TLS data expansion function.",
1065
1066 0, /* @tp_traverse@ */
1067 0, /* @tp_clear@ */
1068 0, /* @tp_richcompare@ */
1069 0, /* @tp_weaklistoffset@ */
1070 0, /* @tp_iter@ */
1071 0, /* @tp_iternext@ */
1072 0, /* @tp_methods@ */
1073 0, /* @tp_members@ */
1074 0, /* @tp_getset@ */
1075 0, /* @tp_base@ */
1076 0, /* @tp_dict@ */
1077 0, /* @tp_descr_get@ */
1078 0, /* @tp_descr_set@ */
1079 0, /* @tp_dictoffset@ */
1080 0, /* @tp_init@ */
1081 PyType_GenericAlloc, /* @tp_alloc@ */
1082 tlsdx_pynew, /* @tp_new@ */
1083 0, /* @tp_free@ */
1084 0 /* @tp_is_gc@ */
1085 };
1086
1087 static PyTypeObject tlsprf_pytype_skel = {
1088 PyObject_HEAD_INIT(0) 0, /* Header */
1089 "TLSPRF", /* @tp_name@ */
1090 sizeof(grand_pyobj), /* @tp_basicsize@ */
1091 0, /* @tp_itemsize@ */
1092
1093 grand_pydealloc, /* @tp_dealloc@ */
1094 0, /* @tp_print@ */
1095 0, /* @tp_getattr@ */
1096 0, /* @tp_setattr@ */
1097 0, /* @tp_compare@ */
1098 0, /* @tp_repr@ */
1099 0, /* @tp_as_number@ */
1100 0, /* @tp_as_sequence@ */
1101 0, /* @tp_as_mapping@ */
1102 0, /* @tp_hash@ */
1103 0, /* @tp_call@ */
1104 0, /* @tp_str@ */
1105 0, /* @tp_getattro@ */
1106 0, /* @tp_setattro@ */
1107 0, /* @tp_as_buffer@ */
1108 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1109 Py_TPFLAGS_BASETYPE,
1110
1111 /* @tp_doc@ */
1112 "TLSPRF(KEY, SEED, [lmac = md5_hmac], [rmac = sha_hmac]):\n\
1113 TLS pseudorandom function.",
1114
1115 0, /* @tp_traverse@ */
1116 0, /* @tp_clear@ */
1117 0, /* @tp_richcompare@ */
1118 0, /* @tp_weaklistoffset@ */
1119 0, /* @tp_iter@ */
1120 0, /* @tp_iternext@ */
1121 0, /* @tp_methods@ */
1122 0, /* @tp_members@ */
1123 0, /* @tp_getset@ */
1124 0, /* @tp_base@ */
1125 0, /* @tp_dict@ */
1126 0, /* @tp_descr_get@ */
1127 0, /* @tp_descr_set@ */
1128 0, /* @tp_dictoffset@ */
1129 0, /* @tp_init@ */
1130 PyType_GenericAlloc, /* @tp_alloc@ */
1131 tlsprf_pynew, /* @tp_new@ */
1132 0, /* @tp_free@ */
1133 0 /* @tp_is_gc@ */
1134 };
1135
1136 /*----- DSA generator -----------------------------------------------------*/
1137
1138 static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1139 {
1140 char *p;
1141 int sz;
1142 PyObject *rc = 0;
1143 static const char *const kwlist[] = { "seed", 0 };
1144
1145 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &p, &sz))
1146 goto end;
1147 rc = grand_dopywrap(ty, dsarand_create(p, sz), f_freeme);
1148 end:
1149 return (rc);
1150 }
1151
1152 static PyObject *drget_seed(PyObject *me, void *hunoz)
1153 {
1154 grand *r = GRAND_R(me);
1155 int n = r->ops->misc(r, DSARAND_SEEDSZ);
1156 PyObject *rc = bytestring_pywrap(0, n);
1157 r->ops->misc(r, DSARAND_GETSEED, PyString_AS_STRING(rc));
1158 return (rc);
1159 }
1160
1161 static PyGetSetDef dsarand_pygetset[] = {
1162 #define GETSETNAME(op, name) dr##op##_##name
1163 GET (seed, "R.seed -> current generator seed")
1164 #undef GETSETNAME
1165 { 0 }
1166 };
1167
1168 static PyTypeObject dsarand_pytype_skel = {
1169 PyObject_HEAD_INIT(0) 0, /* Header */
1170 "DSARand", /* @tp_name@ */
1171 sizeof(grand_pyobj), /* @tp_basicsize@ */
1172 0, /* @tp_itemsize@ */
1173
1174 grand_pydealloc, /* @tp_dealloc@ */
1175 0, /* @tp_print@ */
1176 0, /* @tp_getattr@ */
1177 0, /* @tp_setattr@ */
1178 0, /* @tp_compare@ */
1179 0, /* @tp_repr@ */
1180 0, /* @tp_as_number@ */
1181 0, /* @tp_as_sequence@ */
1182 0, /* @tp_as_mapping@ */
1183 0, /* @tp_hash@ */
1184 0, /* @tp_call@ */
1185 0, /* @tp_str@ */
1186 0, /* @tp_getattro@ */
1187 0, /* @tp_setattro@ */
1188 0, /* @tp_as_buffer@ */
1189 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1190 Py_TPFLAGS_BASETYPE,
1191
1192 /* @tp_doc@ */
1193 "DSARand(SEED): pseudorandom number generator for DSA parameters.",
1194
1195 0, /* @tp_traverse@ */
1196 0, /* @tp_clear@ */
1197 0, /* @tp_richcompare@ */
1198 0, /* @tp_weaklistoffset@ */
1199 0, /* @tp_iter@ */
1200 0, /* @tp_iternext@ */
1201 0, /* @tp_methods@ */
1202 0, /* @tp_members@ */
1203 dsarand_pygetset, /* @tp_getset@ */
1204 0, /* @tp_base@ */
1205 0, /* @tp_dict@ */
1206 0, /* @tp_descr_get@ */
1207 0, /* @tp_descr_set@ */
1208 0, /* @tp_dictoffset@ */
1209 0, /* @tp_init@ */
1210 PyType_GenericAlloc, /* @tp_alloc@ */
1211 dsarand_pynew, /* @tp_new@ */
1212 0, /* @tp_free@ */
1213 0 /* @tp_is_gc@ */
1214 };
1215
1216 /*----- Blum-Blum-Shub generator ------------------------------------------*/
1217
1218 static PyObject *bbs_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1219 {
1220 mp *n = 0, *x = MP_TWO;
1221 PyObject *rc = 0;
1222 static const char *const kwlist[] = { "n", "x", 0 };
1223
1224 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
1225 convmp, &n, convmp, &x))
1226 goto end;
1227 rc = grand_dopywrap(ty, bbs_rand(n, x), f_freeme);
1228 end:
1229 mp_drop(n);
1230 mp_drop(x);
1231 return (rc);
1232 }
1233
1234 static PyObject *bbsmeth_step(PyObject *me, PyObject *arg)
1235 {
1236 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":step")) return (0);
1237 r->ops->misc(r, BBS_STEP); RETURN_ME;
1238 }
1239
1240 static PyObject *bbsmeth_bits(PyObject *me, PyObject *arg)
1241 {
1242 grand *r = GRAND_R(me); unsigned n; uint32 w;
1243 if (!PyArg_ParseTuple(arg, "O&:bits", convuint, &n)) goto end;
1244 if (n > 32) VALERR("can't get more than 32 bits");
1245 r->ops->misc(r, BBS_BITS, n, &w); return (getulong(w));
1246 end:
1247 return (0);
1248 }
1249
1250 static PyObject *bbsmeth_wrap(PyObject *me, PyObject *arg)
1251 {
1252 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":wrap")) return (0);
1253 r->ops->misc(r, BBS_WRAP); RETURN_ME;
1254 }
1255
1256 static PyObject *bbsget_n(PyObject *me, void *hunoz)
1257 {
1258 mp *x = MP_NEW; grand *r = GRAND_R(me);
1259 r->ops->misc(r, BBS_MOD, &x); return (mp_pywrap(x));
1260 }
1261
1262 static PyObject *bbsget_x(PyObject *me, void *hunoz)
1263 {
1264 mp *x = MP_NEW; grand *r = GRAND_R(me);
1265 r->ops->misc(r, BBS_STATE, &x); return (mp_pywrap(x));
1266 }
1267
1268 static int bbsset_x(PyObject *me, PyObject *val, void *hunoz)
1269 {
1270 mp *x = 0; grand *r = GRAND_R(me); int rc = -1; if (!val) NIERR("__del__");
1271 if ((x = getmp(val)) == 0) goto end;
1272 r->ops->misc(r, BBS_SET, x); rc = 0;
1273 end: mp_drop(x); return (rc);
1274 }
1275
1276 static PyObject *bbsget_stepsz(PyObject *me, void *hunoz)
1277 {
1278 grand *r = GRAND_R(me);
1279 return (PyInt_FromLong(r->ops->misc(r, BBS_STEPSZ)));
1280 }
1281
1282 static PyMethodDef bbs_pymethods[] = {
1283 #define METHNAME(name) bbsmeth_##name
1284 METH (step, "R.step(): steps the generator (not useful)")
1285 METH (bits, "R.bits(N) -> W: returns N bits (<= 32) from the generator")
1286 METH (wrap, "R.wrap(): flushes unused bits in internal buffer")
1287 #undef METHNAME
1288 { 0 }
1289 };
1290
1291 static PyGetSetDef bbs_pygetset[] = {
1292 #define GETSETNAME(op, name) bbs##op##_##name
1293 GET (n, "R.n -> Blum modulus")
1294 GETSET(x, "R.x -> current seed value")
1295 GET (stepsz, "R.stepsz -> number of bits generated per step")
1296 #undef GETSETNAME
1297 { 0 }
1298 };
1299
1300 static PyTypeObject bbs_pytype_skel = {
1301 PyObject_HEAD_INIT(0) 0, /* Header */
1302 "BlumBlumShub", /* @tp_name@ */
1303 sizeof(grand_pyobj), /* @tp_basicsize@ */
1304 0, /* @tp_itemsize@ */
1305
1306 grand_pydealloc, /* @tp_dealloc@ */
1307 0, /* @tp_print@ */
1308 0, /* @tp_getattr@ */
1309 0, /* @tp_setattr@ */
1310 0, /* @tp_compare@ */
1311 0, /* @tp_repr@ */
1312 0, /* @tp_as_number@ */
1313 0, /* @tp_as_sequence@ */
1314 0, /* @tp_as_mapping@ */
1315 0, /* @tp_hash@ */
1316 0, /* @tp_call@ */
1317 0, /* @tp_str@ */
1318 0, /* @tp_getattro@ */
1319 0, /* @tp_setattro@ */
1320 0, /* @tp_as_buffer@ */
1321 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1322 Py_TPFLAGS_BASETYPE,
1323
1324 /* @tp_doc@ */
1325 "BlumBlumShub(N, [x = 2]): Blum-Blum-Shub pseudorandom number generator.",
1326
1327 0, /* @tp_traverse@ */
1328 0, /* @tp_clear@ */
1329 0, /* @tp_richcompare@ */
1330 0, /* @tp_weaklistoffset@ */
1331 0, /* @tp_iter@ */
1332 0, /* @tp_iternext@ */
1333 bbs_pymethods, /* @tp_methods@ */
1334 0, /* @tp_members@ */
1335 bbs_pygetset, /* @tp_getset@ */
1336 0, /* @tp_base@ */
1337 0, /* @tp_dict@ */
1338 0, /* @tp_descr_get@ */
1339 0, /* @tp_descr_set@ */
1340 0, /* @tp_dictoffset@ */
1341 0, /* @tp_init@ */
1342 PyType_GenericAlloc, /* @tp_alloc@ */
1343 bbs_pynew, /* @tp_new@ */
1344 0, /* @tp_free@ */
1345 0 /* @tp_is_gc@ */
1346 };
1347
1348 typedef struct bbspriv_pyobj {
1349 grand_pyobj gr;
1350 bbs_priv bp;
1351 } bbspriv_pyobj;
1352
1353 #define BBSPRIV_BP(o) (&((bbspriv_pyobj *)(o))->bp)
1354
1355 static PyObject *bbspriv_pynew(PyTypeObject *ty,
1356 PyObject *arg, PyObject *kw)
1357 {
1358 mp *p = 0, *q = 0, *n = 0, *x = MP_TWO;
1359 bbspriv_pyobj *rc = 0;
1360 static const char *const kwlist[] = { "n", "p", "q", "seed", 0 };
1361
1362 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&:new", KWLIST,
1363 convmp, &n, convmp, &p, convmp, &q,
1364 convmp, &x))
1365 goto end;
1366 if (!n + !p + !q > 1) VALERR("must specify at least two of n, p, q");
1367 if (!n) n = mp_mul(MP_NEW, p, q);
1368 else if (!p) mp_div(&p, 0, n, q);
1369 else if (!q) mp_div(&q, 0, n, p);
1370 rc = (bbspriv_pyobj *)ty->tp_alloc(ty, 0);
1371 rc->gr.r = bbs_rand(n, x);
1372 rc->gr.f = f_freeme;
1373 rc->bp.p = MP_COPY(p);
1374 rc->bp.q = MP_COPY(q);
1375 rc->bp.n = MP_COPY(n);
1376 end:
1377 mp_drop(p); mp_drop(q); mp_drop(n); mp_drop(x);
1378 return ((PyObject *)rc);
1379 }
1380
1381 static PyObject *meth__BBSPriv_generate(PyObject *me,
1382 PyObject *arg, PyObject *kw)
1383 {
1384 bbs_priv bp = { 0 };
1385 mp *x = MP_TWO;
1386 struct excinfo exc = EXCINFO_INIT;
1387 pypgev evt = { { 0 } };
1388 unsigned nbits, n = 0;
1389 grand *r = &rand_global;
1390 static const char *const kwlist[] =
1391 { "class", "nbits", "event", "rng", "nsteps", "seed", 0 };
1392 bbspriv_pyobj *rc = 0;
1393
1394 evt.exc = &exc;
1395 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", KWLIST,
1396 &me, convuint, &nbits, convpgev, &evt,
1397 convgrand, &r, convuint, &n, convmp, &x))
1398 goto end;
1399 if (bbs_gen(&bp, nbits, r, n, evt.ev.proc, evt.ev.ctx))
1400 PGENERR(&exc);
1401 rc = PyObject_New(bbspriv_pyobj, bbspriv_pytype);
1402 rc->gr.r = bbs_rand(bp.n, x);
1403 rc->gr.f = f_freeme;
1404 rc->bp.p = MP_COPY(bp.p);
1405 rc->bp.q = MP_COPY(bp.q);
1406 rc->bp.n = MP_COPY(bp.n);
1407 end:
1408 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
1409 return ((PyObject *)rc);
1410 }
1411
1412 static void bbspriv_pydealloc(PyObject *me)
1413 {
1414 bbs_priv *bp = BBSPRIV_BP(me);
1415 mp_drop(bp->n);
1416 mp_drop(bp->p);
1417 mp_drop(bp->q);
1418 grand_pydealloc(me);
1419 }
1420
1421 static PyObject *bpmeth_ff(PyObject *me, PyObject *arg)
1422 {
1423 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1424 if (!PyArg_ParseTuple(arg, "O&:ff", convmp, &n)) return (0);
1425 r->ops->misc(r, BBS_FF, bp, n); RETURN_ME;
1426 }
1427
1428 static PyObject *bpmeth_rew(PyObject *me, PyObject *arg)
1429 {
1430 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1431 if (!PyArg_ParseTuple(arg, "O&:rew", convmp, &n)) return (0);
1432 r->ops->misc(r, BBS_REW, bp, n); RETURN_ME;
1433 }
1434
1435 static PyObject *bpget_n(PyObject *me, void *hunoz)
1436 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->n))); }
1437
1438 static PyObject *bpget_p(PyObject *me, void *hunoz)
1439 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->p))); }
1440
1441 static PyObject *bpget_q(PyObject *me, void *hunoz)
1442 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->q))); }
1443
1444 static PyMethodDef bbspriv_pymethods[] = {
1445 #define METHNAME(name) bpmeth_##name
1446 METH (ff, "R.ff(N): fast-forward N places")
1447 METH (rew, "R.rew(N): rewind N places")
1448 #undef METHNAME
1449 { 0 }
1450 };
1451
1452 static PyGetSetDef bbspriv_pygetset[] = {
1453 #define GETSETNAME(op, name) bp##op##_##name
1454 GET (n, "R.n -> Blum modulus")
1455 GET (p, "R.p -> one of the factors of the modulus")
1456 GET (q, "R.q -> one of the factors of the modulus")
1457 #undef GETSETNAME
1458 { 0 }
1459 };
1460
1461 static PyTypeObject bbspriv_pytype_skel = {
1462 PyObject_HEAD_INIT(0) 0, /* Header */
1463 "BBSPriv", /* @tp_name@ */
1464 sizeof(bbspriv_pyobj), /* @tp_basicsize@ */
1465 0, /* @tp_itemsize@ */
1466
1467 bbspriv_pydealloc, /* @tp_dealloc@ */
1468 0, /* @tp_print@ */
1469 0, /* @tp_getattr@ */
1470 0, /* @tp_setattr@ */
1471 0, /* @tp_compare@ */
1472 0, /* @tp_repr@ */
1473 0, /* @tp_as_number@ */
1474 0, /* @tp_as_sequence@ */
1475 0, /* @tp_as_mapping@ */
1476 0, /* @tp_hash@ */
1477 0, /* @tp_call@ */
1478 0, /* @tp_str@ */
1479 0, /* @tp_getattro@ */
1480 0, /* @tp_setattro@ */
1481 0, /* @tp_as_buffer@ */
1482 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1483 Py_TPFLAGS_BASETYPE,
1484
1485 /* @tp_doc@ */
1486 "BBSPriv(..., seed = 2]): Blum-Blum-Shub, with private key.\n\
1487 Keywords: n, p, q; must provide at least two",
1488
1489 0, /* @tp_traverse@ */
1490 0, /* @tp_clear@ */
1491 0, /* @tp_richcompare@ */
1492 0, /* @tp_weaklistoffset@ */
1493 0, /* @tp_iter@ */
1494 0, /* @tp_iternext@ */
1495 bbspriv_pymethods, /* @tp_methods@ */
1496 0, /* @tp_members@ */
1497 bbspriv_pygetset, /* @tp_getset@ */
1498 0, /* @tp_base@ */
1499 0, /* @tp_dict@ */
1500 0, /* @tp_descr_get@ */
1501 0, /* @tp_descr_set@ */
1502 0, /* @tp_dictoffset@ */
1503 0, /* @tp_init@ */
1504 PyType_GenericAlloc, /* @tp_alloc@ */
1505 bbspriv_pynew, /* @tp_new@ */
1506 0, /* @tp_free@ */
1507 0 /* @tp_is_gc@ */
1508 };
1509
1510 /*----- Global stuff ------------------------------------------------------*/
1511
1512 static PyMethodDef methods[] = {
1513 #define METHNAME(name) meth_##name
1514 KWMETH(_BBSPriv_generate, "\
1515 generate(NBITS, [event = pgen_nullev], [rng = rand],\n\
1516 [nsteps = 0], [seed = 2]) -> R")
1517 #undef METHNAME
1518 { 0 }
1519 };
1520
1521 void rand_pyinit(void)
1522 {
1523 INITTYPE(grand, root);
1524 INITTYPE(truerand, grand);
1525 INITTYPE(fibrand, grand);
1526 INITTYPE(lcrand, grand);
1527 INITTYPE(dsarand, grand);
1528 INITTYPE(bbs, grand);
1529 INITTYPE(bbspriv, bbs);
1530 INITTYPE(sslprf, grand);
1531 INITTYPE(tlsdx, grand);
1532 INITTYPE(tlsprf, grand);
1533 INITTYPE(gccrand, type);
1534 INITTYPE(gcrand, grand);
1535 INITTYPE(gclatinrand, gcrand);
1536 rand_noisesrc(RAND_GLOBAL, &noise_source);
1537 rand_seed(RAND_GLOBAL, 160);
1538 addmethods(methods);
1539 }
1540
1541 #define gccrand gccrand_info
1542 GEN(gccrands, crand)
1543
1544 void rand_pyinsert(PyObject *mod)
1545 {
1546 INSERT("GRand", grand_pytype);
1547 INSERT("TrueRand", truerand_pytype);
1548 INSERT("LCRand", lcrand_pytype);
1549 INSERT("FibRand", fibrand_pytype);
1550 INSERT("SSLRand", sslprf_pytype);
1551 INSERT("TLSDataExpansion", tlsdx_pytype);
1552 INSERT("TLSPRF", tlsprf_pytype);
1553 INSERT("DSARand", dsarand_pytype);
1554 INSERT("BlumBlumShub", bbs_pytype);
1555 INSERT("BBSPriv", bbspriv_pytype);
1556 INSERT("GCCRand", gccrand_pytype);
1557 INSERT("GCRand", gcrand_pytype);
1558 INSERT("GCLatinRand", gclatinrand_pytype);
1559 rand_pyobj = grand_pywrap(&rand_global, 0); Py_INCREF(rand_pyobj);
1560 gccrands_dict = gccrands(); Py_INCREF(gccrands_dict);
1561 INSERT("gccrands", gccrands_dict);
1562 INSERT("rand", rand_pyobj);
1563 }
1564
1565 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings