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78 if (!GRAND_R(me)) VALERR("random generator object is no longer valid");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