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catacomb-python.h, *.c: Move definitions back into implementation files.
[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 = PyDict_GetItemString(gccrands_dict, r->ops->name)) != 0)
69 ty = (PyTypeObject *)ob;
70 return (grand_dopywrap(ty, r, f));
71 }
72
73 CONVFUNC(grand, grand *, GRAND_R)
74
75 static int grand_check(PyObject *me)
76 {
77 if (!GRAND_R(me)) VALERR("random generator object is no longer valid");
78 return (0);
79 end:
80 return (-1);
81 }
82
83 static PyObject *grmeth_byte(PyObject *me, PyObject *arg)
84 {
85 if (!PyArg_ParseTuple(arg, ":byte")) return (0);
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, PyObject *arg)
91 {
92 if (!PyArg_ParseTuple(arg, ":word")) return (0);
93 if (grand_check(me)) return (0);
94 return (getulong(grand_word(GRAND_R(me))));
95 }
96
97 static PyObject *grmeth_range(PyObject *me, PyObject *arg)
98 {
99 PyObject *m;
100 mp *x = 0;
101 mp *y = 0;
102
103 if (!PyArg_ParseTuple(arg, "O:range", &m)) return (0);
104 if (grand_check(me)) return (0);
105 if (PyInt_Check(m)) {
106 long mm = PyInt_AS_LONG(m);
107 if (mm <= 0)
108 goto notpos;
109 if (mm <= 0xffffffff)
110 return (PyInt_FromLong(grand_range(GRAND_R(me), mm)));
111 }
112 if ((x = getmp(m)) == 0)
113 goto end;
114 if (!MP_POSP(x))
115 goto notpos;
116 y = mprand_range(MP_NEW, x, GRAND_R(me), 0);
117 MP_DROP(x);
118 return (mp_pywrap(y));
119 notpos:
120 VALERR("range must be strictly positive");
121 end:
122 if (x) MP_DROP(x);
123 return (0);
124 }
125
126 static PyObject *grmeth_mp(PyObject *me, PyObject *arg, PyObject *kw)
127 {
128 size_t l;
129 mpw o = 0;
130 static const char *const kwlist[] = { "bits", "or", 0 };
131
132 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:mp", KWLIST,
133 convszt, &l, convmpw, &o))
134 goto end;
135 if (grand_check(me)) return (0);
136 if (l < MPW_BITS && (o >> l)) VALERR("or mask too large");
137 return (mp_pywrap(mprand(MP_NEW, l, GRAND_R(me), o)));
138 end:
139 return (0);
140 }
141
142 static PyObject *grmeth_block(PyObject *me, PyObject *arg)
143 {
144 unsigned long n;
145 PyObject *rc = 0;
146
147 if (!PyArg_ParseTuple(arg, "O&:block", convulong, &n)) goto end;
148 if (grand_check(me)) return (0);
149 rc = bytestring_pywrap(0, n);
150 grand_fill(GRAND_R(me), PyString_AS_STRING(rc), n);
151 end:
152 return (rc);
153 }
154
155 static int checkop(grand *r, unsigned op, const char *what)
156 {
157 if (r->ops->misc(r, GRAND_CHECK, op)) return (0);
158 PyErr_Format(PyExc_TypeError, "operation %s not supported", what);
159 return (-1);
160 }
161
162 static PyObject *grmeth_seedint(PyObject *me, PyObject *arg)
163 {
164 int i;
165 grand *r = GRAND_R(me);
166 if (!PyArg_ParseTuple(arg, "i:seedint", &i) ||
167 grand_check(me) || checkop(r, GRAND_SEEDINT, "seedint"))
168 goto end;
169 r->ops->misc(r, GRAND_SEEDINT, i);
170 RETURN_ME;
171 end:
172 return (0);
173 }
174
175 static PyObject *grmeth_seedword(PyObject *me, PyObject *arg)
176 {
177 uint32 u;
178 grand *r = GRAND_R(me);
179 if (!PyArg_ParseTuple(arg, "O&:seedword", convu32, &u) ||
180 grand_check(me) || checkop(r, GRAND_SEEDUINT32, "seedword"))
181 goto end;
182 r->ops->misc(r, GRAND_SEEDUINT32, u);
183 RETURN_ME;
184 end:
185 return (0);
186 }
187
188 static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
189 {
190 char *p;
191 Py_ssize_t n;
192 grand *r = GRAND_R(me);
193 if (!PyArg_ParseTuple(arg, "s#:seedblock", &p, &n) ||
194 grand_check(me) || checkop(r, GRAND_SEEDBLOCK, "seedblock"))
195 goto end;
196 r->ops->misc(r, GRAND_SEEDBLOCK, p, (size_t)n);
197 RETURN_ME;
198 end:
199 return (0);
200 }
201
202 static PyObject *grmeth_seedmp(PyObject *me, PyObject *arg)
203 {
204 PyObject *x;
205 mp *xx;
206 grand *r = GRAND_R(me);
207 if (!PyArg_ParseTuple(arg, "O:seedmp", &x) ||
208 grand_check(me) || checkop(r, GRAND_SEEDMP, "seedmp") ||
209 (xx = getmp(x)) == 0)
210 goto end;
211 r->ops->misc(r, GRAND_SEEDMP, xx);
212 MP_DROP(xx);
213 RETURN_ME;
214 end:
215 return (0);
216 }
217
218 static PyObject *grmeth_seedrand(PyObject *me, PyObject *arg, PyObject *kw)
219 {
220 static const char *const kwlist[] = { "rng", 0 };
221 grand *r = GRAND_R(me);
222 grand *rr = &rand_global;
223 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:seedrand", KWLIST,
224 convgrand, &rr) ||
225 grand_check(me) || checkop(r, GRAND_SEEDRAND, "seedrand"))
226 goto end;
227 r->ops->misc(r, GRAND_SEEDRAND, rr);
228 RETURN_ME;
229 end:
230 return (0);
231 }
232
233 static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
234 {
235 grand *r = GRAND_R(me);
236 char *p, *q;
237 Py_ssize_t sz;
238 PyObject *rc;
239
240 if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) return (0);
241 if (grand_check(me)) return (0);
242 rc = bytestring_pywrap(0, sz);
243 q = PyString_AS_STRING(rc);
244 GR_FILL(r, q, sz);
245 while (sz--) *q++ ^= *p++;
246 return (rc);
247 }
248
249 static void grand_pydealloc(PyObject *me)
250 {
251 grand_pyobj *g = (grand_pyobj *)me;
252 if ((g->f & f_freeme) && g->r) GR_DESTROY(g->r);
253 FREEOBJ(me);
254 }
255
256 static PyObject *grget_name(PyObject *me, void *hunoz)
257 { return (grand_check(me) ? 0 : PyString_FromString(GRAND_R(me)->ops->name)); }
258
259 static PyObject *grget_cryptop(PyObject *me, void *hunoz)
260 { return (grand_check(me) ? 0 : getbool(GRAND_R(me)->ops->f & GRAND_CRYPTO)); }
261
262 static PyGetSetDef grand_pygetset[] = {
263 #define GETSETNAME(op, name) gr##op##_##name
264 GET (name, "R.name -> name of this kind of generator")
265 GET (cryptop, "R.cryptop -> flag: cryptographically strong?")
266 #undef GETSETNAME
267 { 0 }
268 };
269
270 static PyMethodDef grand_pymethods[] = {
271 #define METHNAME(name) grmeth_##name
272 METH (byte, "R.byte() -> BYTE")
273 METH (word, "R.word() -> WORD")
274 METH (block, "R.block(N) -> STRING")
275 KWMETH(mp, "R.mp(bits, [or = 0]) -> MP")
276 METH (range, "R.range(MAX) -> INT")
277 METH (mask, "R.mask(STR) -> STR")
278 METH (seedint, "R.seedint(I)")
279 METH (seedword, "R.seedword(I)")
280 METH (seedblock, "R.seedblock(BYTES)")
281 METH (seedmp, "R.seedmp(X)")
282 KWMETH(seedrand, "R.seedrand(RR)")
283 #undef METHNAME
284 { 0 }
285 };
286
287 static PyTypeObject grand_pytype_skel = {
288 PyObject_HEAD_INIT(0) 0, /* Header */
289 "GRand", /* @tp_name@ */
290 sizeof(grand_pyobj), /* @tp_basicsize@ */
291 0, /* @tp_itemsize@ */
292
293 grand_pydealloc, /* @tp_dealloc@ */
294 0, /* @tp_print@ */
295 0, /* @tp_getattr@ */
296 0, /* @tp_setattr@ */
297 0, /* @tp_compare@ */
298 0, /* @tp_repr@ */
299 0, /* @tp_as_number@ */
300 0, /* @tp_as_sequence@ */
301 0, /* @tp_as_mapping@ */
302 0, /* @tp_hash@ */
303 0, /* @tp_call@ */
304 0, /* @tp_str@ */
305 0, /* @tp_getattro@ */
306 0, /* @tp_setattro@ */
307 0, /* @tp_as_buffer@ */
308 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
309 Py_TPFLAGS_BASETYPE,
310
311 /* @tp_doc@ */
312 "Generic random number source.",
313
314 0, /* @tp_traverse@ */
315 0, /* @tp_clear@ */
316 0, /* @tp_richcompare@ */
317 0, /* @tp_weaklistoffset@ */
318 0, /* @tp_iter@ */
319 0, /* @tp_iternext@ */
320 grand_pymethods, /* @tp_methods@ */
321 0, /* @tp_members@ */
322 grand_pygetset, /* @tp_getset@ */
323 0, /* @tp_base@ */
324 0, /* @tp_dict@ */
325 0, /* @tp_descr_get@ */
326 0, /* @tp_descr_set@ */
327 0, /* @tp_dictoffset@ */
328 0, /* @tp_init@ */
329 PyType_GenericAlloc, /* @tp_alloc@ */
330 abstract_pynew, /* @tp_new@ */
331 0, /* @tp_free@ */
332 0 /* @tp_is_gc@ */
333 };
334
335 static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
336 {
337 uint32 n = 0;
338 static const char *const kwlist[] = { "seed", 0 };
339 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
340 return (0);
341 return (grand_dopywrap(lcrand_pytype, lcrand_create(n), f_freeme));
342 }
343
344 static PyTypeObject lcrand_pytype_skel = {
345 PyObject_HEAD_INIT(0) 0, /* Header */
346 "LCRand", /* @tp_name@ */
347 sizeof(grand_pyobj), /* @tp_basicsize@ */
348 0, /* @tp_itemsize@ */
349
350 grand_pydealloc, /* @tp_dealloc@ */
351 0, /* @tp_print@ */
352 0, /* @tp_getattr@ */
353 0, /* @tp_setattr@ */
354 0, /* @tp_compare@ */
355 0, /* @tp_repr@ */
356 0, /* @tp_as_number@ */
357 0, /* @tp_as_sequence@ */
358 0, /* @tp_as_mapping@ */
359 0, /* @tp_hash@ */
360 0, /* @tp_call@ */
361 0, /* @tp_str@ */
362 0, /* @tp_getattro@ */
363 0, /* @tp_setattro@ */
364 0, /* @tp_as_buffer@ */
365 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
366 Py_TPFLAGS_BASETYPE,
367
368 /* @tp_doc@ */
369 "LCRand([seed = 0]): linear congruential generator.",
370
371 0, /* @tp_traverse@ */
372 0, /* @tp_clear@ */
373 0, /* @tp_richcompare@ */
374 0, /* @tp_weaklistoffset@ */
375 0, /* @tp_iter@ */
376 0, /* @tp_iternext@ */
377 0, /* @tp_methods@ */
378 0, /* @tp_members@ */
379 0, /* @tp_getset@ */
380 0, /* @tp_base@ */
381 0, /* @tp_dict@ */
382 0, /* @tp_descr_get@ */
383 0, /* @tp_descr_set@ */
384 0, /* @tp_dictoffset@ */
385 0, /* @tp_init@ */
386 PyType_GenericAlloc, /* @tp_alloc@ */
387 lcrand_pynew, /* @tp_new@ */
388 0, /* @tp_free@ */
389 0 /* @tp_is_gc@ */
390 };
391
392 static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
393 {
394 uint32 n = 0;
395 static const char *const kwlist[] = { "seed", 0 };
396 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
397 return (0);
398 return (grand_dopywrap(fibrand_pytype, fibrand_create(n), f_freeme));
399 }
400
401 static PyTypeObject fibrand_pytype_skel = {
402 PyObject_HEAD_INIT(0) 0, /* Header */
403 "FibRand", /* @tp_name@ */
404 sizeof(grand_pyobj), /* @tp_basicsize@ */
405 0, /* @tp_itemsize@ */
406
407 grand_pydealloc, /* @tp_dealloc@ */
408 0, /* @tp_print@ */
409 0, /* @tp_getattr@ */
410 0, /* @tp_setattr@ */
411 0, /* @tp_compare@ */
412 0, /* @tp_repr@ */
413 0, /* @tp_as_number@ */
414 0, /* @tp_as_sequence@ */
415 0, /* @tp_as_mapping@ */
416 0, /* @tp_hash@ */
417 0, /* @tp_call@ */
418 0, /* @tp_str@ */
419 0, /* @tp_getattro@ */
420 0, /* @tp_setattro@ */
421 0, /* @tp_as_buffer@ */
422 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
423 Py_TPFLAGS_BASETYPE,
424
425 /* @tp_doc@ */
426 "FibRand([seed = 0]): Fibonacci generator.",
427
428 0, /* @tp_traverse@ */
429 0, /* @tp_clear@ */
430 0, /* @tp_richcompare@ */
431 0, /* @tp_weaklistoffset@ */
432 0, /* @tp_iter@ */
433 0, /* @tp_iternext@ */
434 0, /* @tp_methods@ */
435 0, /* @tp_members@ */
436 0, /* @tp_getset@ */
437 0, /* @tp_base@ */
438 0, /* @tp_dict@ */
439 0, /* @tp_descr_get@ */
440 0, /* @tp_descr_set@ */
441 0, /* @tp_dictoffset@ */
442 0, /* @tp_init@ */
443 PyType_GenericAlloc, /* @tp_alloc@ */
444 fibrand_pynew, /* @tp_new@ */
445 0, /* @tp_free@ */
446 0 /* @tp_is_gc@ */
447 };
448
449 /*----- True random generator ---------------------------------------------*/
450
451 static PyObject *trmeth_gate(PyObject *me, PyObject *arg)
452 {
453 grand *r = GRAND_R(me);
454 if (!PyArg_ParseTuple(arg, ":gate")) return (0);
455 r->ops->misc(r, RAND_GATE);
456 RETURN_ME;
457 }
458
459 static PyObject *trmeth_stretch(PyObject *me, PyObject *arg)
460 {
461 grand *r = GRAND_R(me);
462 if (!PyArg_ParseTuple(arg, ":stretch")) return (0);
463 r->ops->misc(r, RAND_STRETCH);
464 RETURN_ME;
465 }
466
467 static PyObject *trmeth_add(PyObject *me, PyObject *arg)
468 {
469 grand *r = GRAND_R(me);
470 char *p; Py_ssize_t n; unsigned goodbits;
471 if (!PyArg_ParseTuple(arg, "s#O&:add", &p, &n, convuint, &goodbits))
472 return (0);
473 r->ops->misc(r, RAND_ADD, p, (size_t)n, goodbits);
474 RETURN_ME;
475 }
476
477 static PyObject *trmeth_key(PyObject *me, PyObject *arg)
478 {
479 grand *r = GRAND_R(me);
480 char *p; Py_ssize_t n;
481 if (!PyArg_ParseTuple(arg, "s#:key", &p, &n)) return (0);
482 r->ops->misc(r, RAND_KEY, p, (size_t)n);
483 RETURN_ME;
484 }
485
486 static PyObject *trmeth_seed(PyObject *me, PyObject *arg)
487 {
488 grand *r = GRAND_R(me);
489 unsigned u;
490 if (!PyArg_ParseTuple(arg, "O&:seed", convuint, &u)) return (0);
491 if (u > RAND_IBITS) VALERR("pointlessly large");
492 r->ops->misc(r, RAND_SEED, u);
493 RETURN_ME;
494 end:
495 return (0);
496 }
497
498 static PyObject *trmeth_timer(PyObject *me, PyObject *arg)
499 {
500 grand *r = GRAND_R(me);
501 if (!PyArg_ParseTuple(arg, ":timer")) return (0);
502 r->ops->misc(r, RAND_TIMER);
503 RETURN_ME;
504 }
505
506 static PyObject *truerand_pynew(PyTypeObject *ty,
507 PyObject *arg, PyObject *kw)
508 {
509 static const char *const kwlist[] = { 0 };
510 grand *r;
511 PyObject *rc = 0;
512 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) goto end;
513 r = rand_create();
514 r->ops->misc(r, RAND_NOISESRC, &noise_source);
515 r->ops->misc(r, RAND_SEED, 160);
516 rc = grand_dopywrap(ty, r, f_freeme);
517 end:
518 return (rc);
519 }
520
521 static PyMethodDef truerand_pymethods[] = {
522 #define METHNAME(name) trmeth_##name
523 METH (gate, "R.gate()")
524 METH (stretch, "R.stretch()")
525 METH (key, "R.key(BYTES)")
526 METH (seed, "R.seed(NBITS)")
527 METH (add, "R.add(BYTES, GOODBITS")
528 METH (timer, "R.timer()")
529 #undef METHNAME
530 { 0 }
531 };
532
533 static PyObject *trget_goodbits(PyObject *me, void *hunoz)
534 {
535 grand *r = GRAND_R(me);
536 return (PyInt_FromLong(r->ops->misc(r, RAND_GOODBITS)));
537 }
538
539 static PyGetSetDef truerand_pygetset[] = {
540 #define GETSETNAME(op, name) tr##op##_##name
541 GET (goodbits, "R.goodbits -> good bits of entropy remaining")
542 #undef GETSETNAME
543 { 0 }
544 };
545
546 static PyTypeObject truerand_pytype_skel = {
547 PyObject_HEAD_INIT(0) 0, /* Header */
548 "TrueRand", /* @tp_name@ */
549 sizeof(grand_pyobj), /* @tp_basicsize@ */
550 0, /* @tp_itemsize@ */
551
552 grand_pydealloc, /* @tp_dealloc@ */
553 0, /* @tp_print@ */
554 0, /* @tp_getattr@ */
555 0, /* @tp_setattr@ */
556 0, /* @tp_compare@ */
557 0, /* @tp_repr@ */
558 0, /* @tp_as_number@ */
559 0, /* @tp_as_sequence@ */
560 0, /* @tp_as_mapping@ */
561 0, /* @tp_hash@ */
562 0, /* @tp_call@ */
563 0, /* @tp_str@ */
564 0, /* @tp_getattro@ */
565 0, /* @tp_setattro@ */
566 0, /* @tp_as_buffer@ */
567 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
568 Py_TPFLAGS_BASETYPE,
569
570 /* @tp_doc@ */
571 "TrueRand(): true random number source.",
572
573 0, /* @tp_traverse@ */
574 0, /* @tp_clear@ */
575 0, /* @tp_richcompare@ */
576 0, /* @tp_weaklistoffset@ */
577 0, /* @tp_iter@ */
578 0, /* @tp_iternext@ */
579 truerand_pymethods, /* @tp_methods@ */
580 0, /* @tp_members@ */
581 truerand_pygetset, /* @tp_getset@ */
582 0, /* @tp_base@ */
583 0, /* @tp_dict@ */
584 0, /* @tp_descr_get@ */
585 0, /* @tp_descr_set@ */
586 0, /* @tp_dictoffset@ */
587 0, /* @tp_init@ */
588 PyType_GenericAlloc, /* @tp_alloc@ */
589 truerand_pynew, /* @tp_new@ */
590 0, /* @tp_free@ */
591 0 /* @tp_is_gc@ */
592 };
593
594 /*----- Generators from symmetric encryption algorithms -------------------*/
595
596 static PyTypeObject *gccrand_pytype, *gcrand_pytype, *gclatinrand_pytype;
597
598 typedef grand *gcrand_func(const void *, size_t sz);
599 typedef grand *gcirand_func(const void *, size_t sz, uint32);
600 typedef grand *gcnrand_func(const void *, size_t sz, const void *);
601 typedef grand *gcshakerand_func(const void *, size_t,
602 const void *, size_t,
603 const void *, size_t);
604 typedef grand *gcshafuncrand_func(const void *, size_t,
605 const void *, size_t);
606 typedef grand *gckmacrand_func(const void *, size_t, const void *, size_t);
607 typedef struct gccrand_info {
608 const char *name;
609 const octet *keysz;
610 unsigned f;
611 size_t noncesz;
612 gcrand_func *func;
613 } gccrand_info;
614
615 #define RNGF_MASK 255u
616
617 enum {
618 RNG_PLAIN = 0,
619 RNG_SEAL,
620 RNG_LATIN,
621 RNG_SHAKE,
622 RNG_KMAC
623 };
624
625 typedef struct gccrand_pyobj {
626 PyHeapTypeObject ty;
627 const gccrand_info *info;
628 } gccrand_pyobj;
629 #define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
630
631 #define GCCRAND_DEF(name, ksz, func, f, nsz) \
632 static const gccrand_info func##_info = \
633 { name, ksz, f, nsz, (gcrand_func *)func };
634 RNGS(GCCRAND_DEF)
635
636 static const gccrand_info *const gcrandtab[] = {
637 #define GCCRAND_ENTRY(name, ksz, func, f, nsz) &func##_info,
638 RNGS(GCCRAND_ENTRY)
639 0
640 };
641
642 static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
643 {
644 const gccrand_info *info = GCCRAND_INFO(ty);
645 static const char *const kwlist[] = { "key", 0 };
646 char *k;
647 Py_ssize_t n;
648
649 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &k, &n))
650 goto end;
651 if (keysz(n, info->keysz) != n) VALERR("bad key length");
652 return (grand_dopywrap(ty, info->func(k, n), f_freeme));
653 end:
654 return (0);
655 }
656
657 static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
658 {
659 const gccrand_info *info = GCCRAND_INFO(ty);
660 uint32 i = 0;
661 static const char *const kwlist[] = { "key", "i", 0 };
662 char *k;
663 Py_ssize_t n;
664
665 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&:new", KWLIST,
666 &k, &n, convu32, &i))
667 goto end;
668 if (keysz(n, info->keysz) != n) VALERR("bad key length");
669 return (grand_dopywrap(ty,
670 ((gcirand_func *)info->func)(k, n, i),
671 f_freeme));
672 end:
673 return (0);
674 }
675
676 static PyObject *gcnrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
677 {
678 const gccrand_info *info = GCCRAND_INFO(ty);
679 static const char *const kwlist[] = { "key", "nonce", 0 };
680 char *k, *n;
681 Py_ssize_t ksz, nsz;
682
683 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#:new", KWLIST,
684 &k, &ksz, &n, &nsz))
685 goto end;
686 if (keysz(ksz, info->keysz) != ksz) VALERR("bad key length");
687 if (nsz != info->noncesz) VALERR("bad nonce length");
688 return (grand_dopywrap(ty,
689 ((gcnrand_func *)info->func)(k, ksz, n),
690 f_freeme));
691 end:
692 return (0);
693 }
694
695 static PyObject *gcshakyrand_pynew(PyTypeObject *ty,
696 PyObject *arg, PyObject *kw)
697 {
698 const gccrand_info *info = GCCRAND_INFO(ty);
699 static const char
700 *const kwlist_shake[] = { "key", "func", "perso", 0 },
701 *const kwlist_func[] = { "key", "perso", 0 };
702 char *k, *f = 0, *p = 0;
703 Py_ssize_t ksz, fsz = 0, psz = 0;
704
705 if ((info->f&RNGF_MASK) == RNG_SHAKE
706 ? !PyArg_ParseTupleAndKeywords(arg, kw, "s#|s#s#:new",
707 (/*unconst*/ char **)kwlist_shake,
708 &k, &ksz, &f, &fsz, &p, &psz)
709 : !PyArg_ParseTupleAndKeywords(arg, kw, "s#|s#:new",
710 (/*unconst*/ char **)kwlist_func,
711 &k, &ksz, &p, &psz))
712 goto end;
713 if (keysz(ksz, info->keysz) != ksz) VALERR("bad key length");
714 return (grand_dopywrap(ty,
715 (info->f&RNGF_MASK) == RNG_SHAKE
716 ? ((gcshakerand_func *)info->func)(f, fsz,
717 p, psz,
718 k, ksz)
719 : ((gcshafuncrand_func *)info->func)(p, psz,
720 k, ksz),
721 f_freeme));
722 end:
723 return (0);
724 }
725
726 static PyObject *gccrand_pywrap(const gccrand_info *info)
727 {
728 gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
729 g->info = info;
730 g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
731 switch (info->f&RNGF_MASK) {
732 case RNG_LATIN: g->ty.ht_type.tp_base = gclatinrand_pytype; break;
733 default: g->ty.ht_type.tp_base = gcrand_pytype; break;
734 }
735 Py_INCREF(g->ty.ht_type.tp_base);
736 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
737 Py_TPFLAGS_BASETYPE |
738 Py_TPFLAGS_HEAPTYPE);
739 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
740 g->ty.ht_type.tp_free = 0;
741 switch (info->f&RNGF_MASK) {
742 case RNG_LATIN: g->ty.ht_type.tp_new = gcnrand_pynew; break;
743 case RNG_SEAL: g->ty.ht_type.tp_new = gcirand_pynew; break;
744 case RNG_SHAKE: case RNG_KMAC:
745 g->ty.ht_type.tp_new = gcshakyrand_pynew; break;
746 default: g->ty.ht_type.tp_new = gcrand_pynew; break;
747 }
748 typeready(&g->ty.ht_type);
749 return ((PyObject *)g);
750 }
751
752 static PyObject *gccrget_name(PyObject *me, void *hunoz)
753 { return (PyString_FromString(GCCRAND_INFO(me)->name)); }
754 static PyObject *gccrget_keysz(PyObject *me, void *hunoz)
755 { return (keysz_pywrap(GCCRAND_INFO(me)->keysz)); }
756
757 static PyObject *gclrmeth_tell(PyObject *me, PyObject *arg)
758 {
759 grand *r = GRAND_R(me);
760 PyObject *rc = 0;
761 kludge64 off;
762
763 if (!PyArg_ParseTuple(arg, ":tell")) return (0);
764 r->ops->misc(r, SALSA20_TELLU64, &off);
765 rc = getk64(off);
766 return (rc);
767 }
768
769 static PyObject *gclrmeth_seek(PyObject *me, PyObject *arg)
770 {
771 grand *r = GRAND_R(me);
772 kludge64 off;
773
774 if (!PyArg_ParseTuple(arg, "O&:seek", convk64, &off)) return (0);
775 r->ops->misc(r, SALSA20_SEEKU64, off);
776 RETURN_ME;
777 }
778
779 static PyGetSetDef gccrand_pygetset[] = {
780 #define GETSETNAME(op, name) gccr##op##_##name
781 GET (keysz, "CR.keysz -> acceptable key sizes")
782 GET (name, "CR.name -> name of this kind of generator")
783 #undef GETSETNAME
784 { 0 }
785 };
786
787 static PyMethodDef gclatinrand_pymethods[] = {
788 #define METHNAME(name) gclrmeth_##name
789 METH (tell, "R.tell() -> OFF")
790 METH (seek, "R.seek(OFF)")
791 #undef METHNAME
792 { 0 }
793 };
794
795 static PyTypeObject gccrand_pytype_skel = {
796 PyObject_HEAD_INIT(0) 0, /* Header */
797 "GCCRand", /* @tp_name@ */
798 sizeof(gccrand_pyobj), /* @tp_basicsize@ */
799 0, /* @tp_itemsize@ */
800
801 0, /* @tp_dealloc@ */
802 0, /* @tp_print@ */
803 0, /* @tp_getattr@ */
804 0, /* @tp_setattr@ */
805 0, /* @tp_compare@ */
806 0, /* @tp_repr@ */
807 0, /* @tp_as_number@ */
808 0, /* @tp_as_sequence@ */
809 0, /* @tp_as_mapping@ */
810 0, /* @tp_hash@ */
811 0, /* @tp_call@ */
812 0, /* @tp_str@ */
813 0, /* @tp_getattro@ */
814 0, /* @tp_setattro@ */
815 0, /* @tp_as_buffer@ */
816 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
817 Py_TPFLAGS_BASETYPE,
818
819 /* @tp_doc@ */
820 "Metaclass for symmetric crypto-based generators.",
821
822 0, /* @tp_traverse@ */
823 0, /* @tp_clear@ */
824 0, /* @tp_richcompare@ */
825 0, /* @tp_weaklistoffset@ */
826 0, /* @tp_iter@ */
827 0, /* @tp_iternext@ */
828 0, /* @tp_methods@ */
829 0, /* @tp_members@ */
830 gccrand_pygetset, /* @tp_getset@ */
831 0, /* @tp_base@ */
832 0, /* @tp_dict@ */
833 0, /* @tp_descr_get@ */
834 0, /* @tp_descr_set@ */
835 0, /* @tp_dictoffset@ */
836 0, /* @tp_init@ */
837 PyType_GenericAlloc, /* @tp_alloc@ */
838 abstract_pynew, /* @tp_new@ */
839 0, /* @tp_free@ */
840 0 /* @tp_is_gc@ */
841 };
842
843 static PyTypeObject gcrand_pytype_skel = {
844 PyObject_HEAD_INIT(0) 0, /* Header */
845 "GCRand", /* @tp_name@ */
846 sizeof(grand_pyobj), /* @tp_basicsize@ */
847 0, /* @tp_itemsize@ */
848
849 grand_pydealloc, /* @tp_dealloc@ */
850 0, /* @tp_print@ */
851 0, /* @tp_getattr@ */
852 0, /* @tp_setattr@ */
853 0, /* @tp_compare@ */
854 0, /* @tp_repr@ */
855 0, /* @tp_as_number@ */
856 0, /* @tp_as_sequence@ */
857 0, /* @tp_as_mapping@ */
858 0, /* @tp_hash@ */
859 0, /* @tp_call@ */
860 0, /* @tp_str@ */
861 0, /* @tp_getattro@ */
862 0, /* @tp_setattro@ */
863 0, /* @tp_as_buffer@ */
864 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
865 Py_TPFLAGS_BASETYPE,
866
867 /* @tp_doc@ */
868 "Abstract base class for symmetric crypto-based generators.",
869
870 0, /* @tp_traverse@ */
871 0, /* @tp_clear@ */
872 0, /* @tp_richcompare@ */
873 0, /* @tp_weaklistoffset@ */
874 0, /* @tp_iter@ */
875 0, /* @tp_iternext@ */
876 0, /* @tp_methods@ */
877 0, /* @tp_members@ */
878 0, /* @tp_getset@ */
879 0, /* @tp_base@ */
880 0, /* @tp_dict@ */
881 0, /* @tp_descr_get@ */
882 0, /* @tp_descr_set@ */
883 0, /* @tp_dictoffset@ */
884 0, /* @tp_init@ */
885 PyType_GenericAlloc, /* @tp_alloc@ */
886 abstract_pynew, /* @tp_new@ */
887 0, /* @tp_free@ */
888 0 /* @tp_is_gc@ */
889 };
890
891 static PyTypeObject gclatinrand_pytype_skel = {
892 PyObject_HEAD_INIT(0) 0, /* Header */
893 "GCLatinRand", /* @tp_name@ */
894 sizeof(grand_pyobj), /* @tp_basicsize@ */
895 0, /* @tp_itemsize@ */
896
897 grand_pydealloc, /* @tp_dealloc@ */
898 0, /* @tp_print@ */
899 0, /* @tp_getattr@ */
900 0, /* @tp_setattr@ */
901 0, /* @tp_compare@ */
902 0, /* @tp_repr@ */
903 0, /* @tp_as_number@ */
904 0, /* @tp_as_sequence@ */
905 0, /* @tp_as_mapping@ */
906 0, /* @tp_hash@ */
907 0, /* @tp_call@ */
908 0, /* @tp_str@ */
909 0, /* @tp_getattro@ */
910 0, /* @tp_setattro@ */
911 0, /* @tp_as_buffer@ */
912 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
913 Py_TPFLAGS_BASETYPE,
914
915 /* @tp_doc@ */
916 "Abstract base class for symmetric crypto-based generators.",
917
918 0, /* @tp_traverse@ */
919 0, /* @tp_clear@ */
920 0, /* @tp_richcompare@ */
921 0, /* @tp_weaklistoffset@ */
922 0, /* @tp_iter@ */
923 0, /* @tp_iternext@ */
924 gclatinrand_pymethods, /* @tp_methods@ */
925 0, /* @tp_members@ */
926 0, /* @tp_getset@ */
927 0, /* @tp_base@ */
928 0, /* @tp_dict@ */
929 0, /* @tp_descr_get@ */
930 0, /* @tp_descr_set@ */
931 0, /* @tp_dictoffset@ */
932 0, /* @tp_init@ */
933 PyType_GenericAlloc, /* @tp_alloc@ */
934 abstract_pynew, /* @tp_new@ */
935 0, /* @tp_free@ */
936 0 /* @tp_is_gc@ */
937 };
938
939 /*----- SSL and TLS generators --------------------------------------------*/
940
941 static PyObject *sslprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
942 {
943 char *k, *s;
944 Py_ssize_t ksz, ssz;
945 const gchash *hco = &md5, *hci = &sha;
946 PyObject *rc = 0;
947 static const char *const kwlist[] = { "key", "seed", "ohash", "ihash", 0 };
948
949 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", KWLIST,
950 &k, &ksz, &s, &ssz,
951 convgchash, &hco, convgchash, &hci))
952 goto end;
953 rc = grand_dopywrap(ty, sslprf_rand(hco, hci, k, ksz, s, ssz), f_freeme);
954 end:
955 return (rc);
956 }
957
958 static PyObject *tlsdx_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
959 {
960 char *k, *s;
961 Py_ssize_t ksz, ssz;
962 const gcmac *mc = &sha_hmac;
963 PyObject *rc = 0;
964 static const char *const kwlist[] = { "key", "seed", "mac", 0 };
965
966 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&:new", KWLIST,
967 &k, &ksz, &s, &ssz,
968 convgcmac, &mc))
969 goto end;
970 rc = grand_dopywrap(ty, tlsdx_rand(mc, k, ksz, s, ssz), f_freeme);
971 end:
972 return (rc);
973 }
974
975 static PyObject *tlsprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
976 {
977 char *k, *s;
978 Py_ssize_t ksz, ssz;
979 const gcmac *mcl = &md5_hmac, *mcr = &sha_hmac;
980 PyObject *rc = 0;
981 static const char *const kwlist[] = { "key", "seed", "lmac", "rmac", 0 };
982
983 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#s#|O&O&:new", KWLIST,
984 &k, &ksz, &s, &ssz,
985 convgcmac, &mcl, convgcmac, &mcr))
986 goto end;
987 rc = grand_dopywrap(ty, tlsprf_rand(mcl, mcr, k, ksz, s, ssz), f_freeme);
988 end:
989 return (rc);
990 }
991
992 static PyTypeObject sslprf_pytype_skel = {
993 PyObject_HEAD_INIT(0) 0, /* Header */
994 "SSLRand", /* @tp_name@ */
995 sizeof(grand_pyobj), /* @tp_basicsize@ */
996 0, /* @tp_itemsize@ */
997
998 grand_pydealloc, /* @tp_dealloc@ */
999 0, /* @tp_print@ */
1000 0, /* @tp_getattr@ */
1001 0, /* @tp_setattr@ */
1002 0, /* @tp_compare@ */
1003 0, /* @tp_repr@ */
1004 0, /* @tp_as_number@ */
1005 0, /* @tp_as_sequence@ */
1006 0, /* @tp_as_mapping@ */
1007 0, /* @tp_hash@ */
1008 0, /* @tp_call@ */
1009 0, /* @tp_str@ */
1010 0, /* @tp_getattro@ */
1011 0, /* @tp_setattro@ */
1012 0, /* @tp_as_buffer@ */
1013 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1014 Py_TPFLAGS_BASETYPE,
1015
1016 /* @tp_doc@ */
1017 "SSLRand(KEY, SEED, [ohash = md5], [ihash = sha]):\n\
1018 RNG for SSL master secret.",
1019
1020 0, /* @tp_traverse@ */
1021 0, /* @tp_clear@ */
1022 0, /* @tp_richcompare@ */
1023 0, /* @tp_weaklistoffset@ */
1024 0, /* @tp_iter@ */
1025 0, /* @tp_iternext@ */
1026 0, /* @tp_methods@ */
1027 0, /* @tp_members@ */
1028 0, /* @tp_getset@ */
1029 0, /* @tp_base@ */
1030 0, /* @tp_dict@ */
1031 0, /* @tp_descr_get@ */
1032 0, /* @tp_descr_set@ */
1033 0, /* @tp_dictoffset@ */
1034 0, /* @tp_init@ */
1035 PyType_GenericAlloc, /* @tp_alloc@ */
1036 sslprf_pynew, /* @tp_new@ */
1037 0, /* @tp_free@ */
1038 0 /* @tp_is_gc@ */
1039 };
1040
1041 static PyTypeObject tlsdx_pytype_skel = {
1042 PyObject_HEAD_INIT(0) 0, /* Header */
1043 "TLSDataExpansion", /* @tp_name@ */
1044 sizeof(grand_pyobj), /* @tp_basicsize@ */
1045 0, /* @tp_itemsize@ */
1046
1047 grand_pydealloc, /* @tp_dealloc@ */
1048 0, /* @tp_print@ */
1049 0, /* @tp_getattr@ */
1050 0, /* @tp_setattr@ */
1051 0, /* @tp_compare@ */
1052 0, /* @tp_repr@ */
1053 0, /* @tp_as_number@ */
1054 0, /* @tp_as_sequence@ */
1055 0, /* @tp_as_mapping@ */
1056 0, /* @tp_hash@ */
1057 0, /* @tp_call@ */
1058 0, /* @tp_str@ */
1059 0, /* @tp_getattro@ */
1060 0, /* @tp_setattro@ */
1061 0, /* @tp_as_buffer@ */
1062 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1063 Py_TPFLAGS_BASETYPE,
1064
1065 /* @tp_doc@ */
1066 "TLSDataExpansion(KEY, SEED, [mac = sha_hmac]):\n\
1067 TLS data expansion function.",
1068
1069 0, /* @tp_traverse@ */
1070 0, /* @tp_clear@ */
1071 0, /* @tp_richcompare@ */
1072 0, /* @tp_weaklistoffset@ */
1073 0, /* @tp_iter@ */
1074 0, /* @tp_iternext@ */
1075 0, /* @tp_methods@ */
1076 0, /* @tp_members@ */
1077 0, /* @tp_getset@ */
1078 0, /* @tp_base@ */
1079 0, /* @tp_dict@ */
1080 0, /* @tp_descr_get@ */
1081 0, /* @tp_descr_set@ */
1082 0, /* @tp_dictoffset@ */
1083 0, /* @tp_init@ */
1084 PyType_GenericAlloc, /* @tp_alloc@ */
1085 tlsdx_pynew, /* @tp_new@ */
1086 0, /* @tp_free@ */
1087 0 /* @tp_is_gc@ */
1088 };
1089
1090 static PyTypeObject tlsprf_pytype_skel = {
1091 PyObject_HEAD_INIT(0) 0, /* Header */
1092 "TLSPRF", /* @tp_name@ */
1093 sizeof(grand_pyobj), /* @tp_basicsize@ */
1094 0, /* @tp_itemsize@ */
1095
1096 grand_pydealloc, /* @tp_dealloc@ */
1097 0, /* @tp_print@ */
1098 0, /* @tp_getattr@ */
1099 0, /* @tp_setattr@ */
1100 0, /* @tp_compare@ */
1101 0, /* @tp_repr@ */
1102 0, /* @tp_as_number@ */
1103 0, /* @tp_as_sequence@ */
1104 0, /* @tp_as_mapping@ */
1105 0, /* @tp_hash@ */
1106 0, /* @tp_call@ */
1107 0, /* @tp_str@ */
1108 0, /* @tp_getattro@ */
1109 0, /* @tp_setattro@ */
1110 0, /* @tp_as_buffer@ */
1111 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1112 Py_TPFLAGS_BASETYPE,
1113
1114 /* @tp_doc@ */
1115 "TLSPRF(KEY, SEED, [lmac = md5_hmac], [rmac = sha_hmac]):\n\
1116 TLS pseudorandom function.",
1117
1118 0, /* @tp_traverse@ */
1119 0, /* @tp_clear@ */
1120 0, /* @tp_richcompare@ */
1121 0, /* @tp_weaklistoffset@ */
1122 0, /* @tp_iter@ */
1123 0, /* @tp_iternext@ */
1124 0, /* @tp_methods@ */
1125 0, /* @tp_members@ */
1126 0, /* @tp_getset@ */
1127 0, /* @tp_base@ */
1128 0, /* @tp_dict@ */
1129 0, /* @tp_descr_get@ */
1130 0, /* @tp_descr_set@ */
1131 0, /* @tp_dictoffset@ */
1132 0, /* @tp_init@ */
1133 PyType_GenericAlloc, /* @tp_alloc@ */
1134 tlsprf_pynew, /* @tp_new@ */
1135 0, /* @tp_free@ */
1136 0 /* @tp_is_gc@ */
1137 };
1138
1139 /*----- DSA generator -----------------------------------------------------*/
1140
1141 static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1142 {
1143 char *p;
1144 Py_ssize_t sz;
1145 PyObject *rc = 0;
1146 static const char *const kwlist[] = { "seed", 0 };
1147
1148 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", KWLIST, &p, &sz))
1149 goto end;
1150 rc = grand_dopywrap(ty, dsarand_create(p, sz), f_freeme);
1151 end:
1152 return (rc);
1153 }
1154
1155 static PyObject *drget_seed(PyObject *me, void *hunoz)
1156 {
1157 grand *r = GRAND_R(me);
1158 int n = r->ops->misc(r, DSARAND_SEEDSZ);
1159 PyObject *rc = bytestring_pywrap(0, n);
1160 r->ops->misc(r, DSARAND_GETSEED, PyString_AS_STRING(rc));
1161 return (rc);
1162 }
1163
1164 static PyGetSetDef dsarand_pygetset[] = {
1165 #define GETSETNAME(op, name) dr##op##_##name
1166 GET (seed, "R.seed -> current generator seed")
1167 #undef GETSETNAME
1168 { 0 }
1169 };
1170
1171 static PyTypeObject dsarand_pytype_skel = {
1172 PyObject_HEAD_INIT(0) 0, /* Header */
1173 "DSARand", /* @tp_name@ */
1174 sizeof(grand_pyobj), /* @tp_basicsize@ */
1175 0, /* @tp_itemsize@ */
1176
1177 grand_pydealloc, /* @tp_dealloc@ */
1178 0, /* @tp_print@ */
1179 0, /* @tp_getattr@ */
1180 0, /* @tp_setattr@ */
1181 0, /* @tp_compare@ */
1182 0, /* @tp_repr@ */
1183 0, /* @tp_as_number@ */
1184 0, /* @tp_as_sequence@ */
1185 0, /* @tp_as_mapping@ */
1186 0, /* @tp_hash@ */
1187 0, /* @tp_call@ */
1188 0, /* @tp_str@ */
1189 0, /* @tp_getattro@ */
1190 0, /* @tp_setattro@ */
1191 0, /* @tp_as_buffer@ */
1192 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1193 Py_TPFLAGS_BASETYPE,
1194
1195 /* @tp_doc@ */
1196 "DSARand(SEED): pseudorandom number generator for DSA parameters.",
1197
1198 0, /* @tp_traverse@ */
1199 0, /* @tp_clear@ */
1200 0, /* @tp_richcompare@ */
1201 0, /* @tp_weaklistoffset@ */
1202 0, /* @tp_iter@ */
1203 0, /* @tp_iternext@ */
1204 0, /* @tp_methods@ */
1205 0, /* @tp_members@ */
1206 dsarand_pygetset, /* @tp_getset@ */
1207 0, /* @tp_base@ */
1208 0, /* @tp_dict@ */
1209 0, /* @tp_descr_get@ */
1210 0, /* @tp_descr_set@ */
1211 0, /* @tp_dictoffset@ */
1212 0, /* @tp_init@ */
1213 PyType_GenericAlloc, /* @tp_alloc@ */
1214 dsarand_pynew, /* @tp_new@ */
1215 0, /* @tp_free@ */
1216 0 /* @tp_is_gc@ */
1217 };
1218
1219 /*----- Blum-Blum-Shub generator ------------------------------------------*/
1220
1221 static PyObject *bbs_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1222 {
1223 mp *n = 0, *x = MP_TWO;
1224 PyObject *rc = 0;
1225 static const char *const kwlist[] = { "n", "x", 0 };
1226
1227 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
1228 convmp, &n, convmp, &x))
1229 goto end;
1230 rc = grand_dopywrap(ty, bbs_rand(n, x), f_freeme);
1231 end:
1232 mp_drop(n);
1233 mp_drop(x);
1234 return (rc);
1235 }
1236
1237 static PyObject *bbsmeth_step(PyObject *me, PyObject *arg)
1238 {
1239 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":step")) return (0);
1240 r->ops->misc(r, BBS_STEP); RETURN_ME;
1241 }
1242
1243 static PyObject *bbsmeth_bits(PyObject *me, PyObject *arg)
1244 {
1245 grand *r = GRAND_R(me); unsigned n; uint32 w;
1246 if (!PyArg_ParseTuple(arg, "O&:bits", convuint, &n)) goto end;
1247 if (n > 32) VALERR("can't get more than 32 bits");
1248 r->ops->misc(r, BBS_BITS, n, &w); return (getulong(w));
1249 end:
1250 return (0);
1251 }
1252
1253 static PyObject *bbsmeth_wrap(PyObject *me, PyObject *arg)
1254 {
1255 grand *r = GRAND_R(me); if (!PyArg_ParseTuple(arg, ":wrap")) return (0);
1256 r->ops->misc(r, BBS_WRAP); RETURN_ME;
1257 }
1258
1259 static PyObject *bbsget_n(PyObject *me, void *hunoz)
1260 {
1261 mp *x = MP_NEW; grand *r = GRAND_R(me);
1262 r->ops->misc(r, BBS_MOD, &x); return (mp_pywrap(x));
1263 }
1264
1265 static PyObject *bbsget_x(PyObject *me, void *hunoz)
1266 {
1267 mp *x = MP_NEW; grand *r = GRAND_R(me);
1268 r->ops->misc(r, BBS_STATE, &x); return (mp_pywrap(x));
1269 }
1270
1271 static int bbsset_x(PyObject *me, PyObject *val, void *hunoz)
1272 {
1273 mp *x = 0; grand *r = GRAND_R(me); int rc = -1; if (!val) NIERR("__del__");
1274 if ((x = getmp(val)) == 0) goto end;
1275 r->ops->misc(r, BBS_SET, x); rc = 0;
1276 end: mp_drop(x); return (rc);
1277 }
1278
1279 static PyObject *bbsget_stepsz(PyObject *me, void *hunoz)
1280 {
1281 grand *r = GRAND_R(me);
1282 return (PyInt_FromLong(r->ops->misc(r, BBS_STEPSZ)));
1283 }
1284
1285 static PyMethodDef bbs_pymethods[] = {
1286 #define METHNAME(name) bbsmeth_##name
1287 METH (step, "R.step(): steps the generator (not useful)")
1288 METH (bits, "R.bits(N) -> W: returns N bits (<= 32) from the generator")
1289 METH (wrap, "R.wrap(): flushes unused bits in internal buffer")
1290 #undef METHNAME
1291 { 0 }
1292 };
1293
1294 static PyGetSetDef bbs_pygetset[] = {
1295 #define GETSETNAME(op, name) bbs##op##_##name
1296 GET (n, "R.n -> Blum modulus")
1297 GETSET(x, "R.x -> current seed value")
1298 GET (stepsz, "R.stepsz -> number of bits generated per step")
1299 #undef GETSETNAME
1300 { 0 }
1301 };
1302
1303 static PyTypeObject bbs_pytype_skel = {
1304 PyObject_HEAD_INIT(0) 0, /* Header */
1305 "BlumBlumShub", /* @tp_name@ */
1306 sizeof(grand_pyobj), /* @tp_basicsize@ */
1307 0, /* @tp_itemsize@ */
1308
1309 grand_pydealloc, /* @tp_dealloc@ */
1310 0, /* @tp_print@ */
1311 0, /* @tp_getattr@ */
1312 0, /* @tp_setattr@ */
1313 0, /* @tp_compare@ */
1314 0, /* @tp_repr@ */
1315 0, /* @tp_as_number@ */
1316 0, /* @tp_as_sequence@ */
1317 0, /* @tp_as_mapping@ */
1318 0, /* @tp_hash@ */
1319 0, /* @tp_call@ */
1320 0, /* @tp_str@ */
1321 0, /* @tp_getattro@ */
1322 0, /* @tp_setattro@ */
1323 0, /* @tp_as_buffer@ */
1324 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1325 Py_TPFLAGS_BASETYPE,
1326
1327 /* @tp_doc@ */
1328 "BlumBlumShub(N, [x = 2]): Blum-Blum-Shub pseudorandom number generator.",
1329
1330 0, /* @tp_traverse@ */
1331 0, /* @tp_clear@ */
1332 0, /* @tp_richcompare@ */
1333 0, /* @tp_weaklistoffset@ */
1334 0, /* @tp_iter@ */
1335 0, /* @tp_iternext@ */
1336 bbs_pymethods, /* @tp_methods@ */
1337 0, /* @tp_members@ */
1338 bbs_pygetset, /* @tp_getset@ */
1339 0, /* @tp_base@ */
1340 0, /* @tp_dict@ */
1341 0, /* @tp_descr_get@ */
1342 0, /* @tp_descr_set@ */
1343 0, /* @tp_dictoffset@ */
1344 0, /* @tp_init@ */
1345 PyType_GenericAlloc, /* @tp_alloc@ */
1346 bbs_pynew, /* @tp_new@ */
1347 0, /* @tp_free@ */
1348 0 /* @tp_is_gc@ */
1349 };
1350
1351 typedef struct bbspriv_pyobj {
1352 grand_pyobj gr;
1353 bbs_priv bp;
1354 } bbspriv_pyobj;
1355
1356 #define BBSPRIV_BP(o) (&((bbspriv_pyobj *)(o))->bp)
1357
1358 static PyObject *bbspriv_pynew(PyTypeObject *ty,
1359 PyObject *arg, PyObject *kw)
1360 {
1361 mp *p = 0, *q = 0, *n = 0, *x = MP_TWO;
1362 bbspriv_pyobj *rc = 0;
1363 static const char *const kwlist[] = { "n", "p", "q", "seed", 0 };
1364
1365 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&:new", KWLIST,
1366 convmp, &n, convmp, &p, convmp, &q,
1367 convmp, &x))
1368 goto end;
1369 if (!n + !p + !q > 1) VALERR("must specify at least two of n, p, q");
1370 if (!n) n = mp_mul(MP_NEW, p, q);
1371 else if (!p) mp_div(&p, 0, n, q);
1372 else if (!q) mp_div(&q, 0, n, p);
1373 rc = (bbspriv_pyobj *)ty->tp_alloc(ty, 0);
1374 rc->gr.r = bbs_rand(n, x);
1375 rc->gr.f = f_freeme;
1376 rc->bp.p = MP_COPY(p);
1377 rc->bp.q = MP_COPY(q);
1378 rc->bp.n = MP_COPY(n);
1379 end:
1380 mp_drop(p); mp_drop(q); mp_drop(n); mp_drop(x);
1381 return ((PyObject *)rc);
1382 }
1383
1384 static PyObject *meth__BBSPriv_generate(PyObject *me,
1385 PyObject *arg, PyObject *kw)
1386 {
1387 bbs_priv bp = { 0 };
1388 mp *x = MP_TWO;
1389 struct excinfo exc = EXCINFO_INIT;
1390 pypgev evt = { { 0 } };
1391 unsigned nbits, n = 0;
1392 grand *r = &rand_global;
1393 static const char *const kwlist[] =
1394 { "class", "nbits", "event", "rng", "nsteps", "seed", 0 };
1395 bbspriv_pyobj *rc = 0;
1396
1397 evt.exc = &exc;
1398 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", KWLIST,
1399 &me, convuint, &nbits, convpgev, &evt,
1400 convgrand, &r, convuint, &n, convmp, &x))
1401 goto end;
1402 if (bbs_gen(&bp, nbits, r, n, evt.ev.proc, evt.ev.ctx))
1403 PGENERR(&exc);
1404 rc = PyObject_New(bbspriv_pyobj, bbspriv_pytype);
1405 rc->gr.r = bbs_rand(bp.n, x);
1406 rc->gr.f = f_freeme;
1407 rc->bp.p = MP_COPY(bp.p);
1408 rc->bp.q = MP_COPY(bp.q);
1409 rc->bp.n = MP_COPY(bp.n);
1410 end:
1411 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
1412 return ((PyObject *)rc);
1413 }
1414
1415 static void bbspriv_pydealloc(PyObject *me)
1416 {
1417 bbs_priv *bp = BBSPRIV_BP(me);
1418 mp_drop(bp->n);
1419 mp_drop(bp->p);
1420 mp_drop(bp->q);
1421 grand_pydealloc(me);
1422 }
1423
1424 static PyObject *bpmeth_ff(PyObject *me, PyObject *arg)
1425 {
1426 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1427 if (!PyArg_ParseTuple(arg, "O&:ff", convmp, &n)) return (0);
1428 r->ops->misc(r, BBS_FF, bp, n); RETURN_ME;
1429 }
1430
1431 static PyObject *bpmeth_rew(PyObject *me, PyObject *arg)
1432 {
1433 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1434 if (!PyArg_ParseTuple(arg, "O&:rew", convmp, &n)) return (0);
1435 r->ops->misc(r, BBS_REW, bp, n); RETURN_ME;
1436 }
1437
1438 static PyObject *bpget_n(PyObject *me, void *hunoz)
1439 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->n))); }
1440
1441 static PyObject *bpget_p(PyObject *me, void *hunoz)
1442 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->p))); }
1443
1444 static PyObject *bpget_q(PyObject *me, void *hunoz)
1445 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->q))); }
1446
1447 static PyMethodDef bbspriv_pymethods[] = {
1448 #define METHNAME(name) bpmeth_##name
1449 METH (ff, "R.ff(N): fast-forward N places")
1450 METH (rew, "R.rew(N): rewind N places")
1451 #undef METHNAME
1452 { 0 }
1453 };
1454
1455 static PyGetSetDef bbspriv_pygetset[] = {
1456 #define GETSETNAME(op, name) bp##op##_##name
1457 GET (n, "R.n -> Blum modulus")
1458 GET (p, "R.p -> one of the factors of the modulus")
1459 GET (q, "R.q -> one of the factors of the modulus")
1460 #undef GETSETNAME
1461 { 0 }
1462 };
1463
1464 static PyTypeObject bbspriv_pytype_skel = {
1465 PyObject_HEAD_INIT(0) 0, /* Header */
1466 "BBSPriv", /* @tp_name@ */
1467 sizeof(bbspriv_pyobj), /* @tp_basicsize@ */
1468 0, /* @tp_itemsize@ */
1469
1470 bbspriv_pydealloc, /* @tp_dealloc@ */
1471 0, /* @tp_print@ */
1472 0, /* @tp_getattr@ */
1473 0, /* @tp_setattr@ */
1474 0, /* @tp_compare@ */
1475 0, /* @tp_repr@ */
1476 0, /* @tp_as_number@ */
1477 0, /* @tp_as_sequence@ */
1478 0, /* @tp_as_mapping@ */
1479 0, /* @tp_hash@ */
1480 0, /* @tp_call@ */
1481 0, /* @tp_str@ */
1482 0, /* @tp_getattro@ */
1483 0, /* @tp_setattro@ */
1484 0, /* @tp_as_buffer@ */
1485 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1486 Py_TPFLAGS_BASETYPE,
1487
1488 /* @tp_doc@ */
1489 "BBSPriv(..., [seed = 2]): Blum-Blum-Shub, with private key.\n\
1490 Keywords: n, p, q; must provide at least two",
1491
1492 0, /* @tp_traverse@ */
1493 0, /* @tp_clear@ */
1494 0, /* @tp_richcompare@ */
1495 0, /* @tp_weaklistoffset@ */
1496 0, /* @tp_iter@ */
1497 0, /* @tp_iternext@ */
1498 bbspriv_pymethods, /* @tp_methods@ */
1499 0, /* @tp_members@ */
1500 bbspriv_pygetset, /* @tp_getset@ */
1501 0, /* @tp_base@ */
1502 0, /* @tp_dict@ */
1503 0, /* @tp_descr_get@ */
1504 0, /* @tp_descr_set@ */
1505 0, /* @tp_dictoffset@ */
1506 0, /* @tp_init@ */
1507 PyType_GenericAlloc, /* @tp_alloc@ */
1508 bbspriv_pynew, /* @tp_new@ */
1509 0, /* @tp_free@ */
1510 0 /* @tp_is_gc@ */
1511 };
1512
1513 /*----- Global stuff ------------------------------------------------------*/
1514
1515 static PyMethodDef methods[] = {
1516 #define METHNAME(name) meth_##name
1517 KWMETH(_BBSPriv_generate, "\
1518 generate(NBITS, [event = pgen_nullev], [rng = rand],\n\
1519 [nsteps = 0], [seed = 2]) -> R")
1520 #undef METHNAME
1521 { 0 }
1522 };
1523
1524 void rand_pyinit(void)
1525 {
1526 INITTYPE(grand, root);
1527 INITTYPE(truerand, grand);
1528 INITTYPE(fibrand, grand);
1529 INITTYPE(lcrand, grand);
1530 INITTYPE(dsarand, grand);
1531 INITTYPE(bbs, grand);
1532 INITTYPE(bbspriv, bbs);
1533 INITTYPE(sslprf, grand);
1534 INITTYPE(tlsdx, grand);
1535 INITTYPE(tlsprf, grand);
1536 INITTYPE(gccrand, type);
1537 INITTYPE(gcrand, grand);
1538 INITTYPE(gclatinrand, gcrand);
1539 rand_noisesrc(RAND_GLOBAL, &noise_source);
1540 rand_seed(RAND_GLOBAL, 160);
1541 addmethods(methods);
1542 }
1543
1544 #define gccrand gccrand_info
1545 GEN(gccrands, crand)
1546
1547 void rand_pyinsert(PyObject *mod)
1548 {
1549 INSERT("GRand", grand_pytype);
1550 INSERT("TrueRand", truerand_pytype);
1551 INSERT("LCRand", lcrand_pytype);
1552 INSERT("FibRand", fibrand_pytype);
1553 INSERT("SSLRand", sslprf_pytype);
1554 INSERT("TLSDataExpansion", tlsdx_pytype);
1555 INSERT("TLSPRF", tlsprf_pytype);
1556 INSERT("DSARand", dsarand_pytype);
1557 INSERT("BlumBlumShub", bbs_pytype);
1558 INSERT("BBSPriv", bbspriv_pytype);
1559 INSERT("GCCRand", gccrand_pytype);
1560 INSERT("GCRand", gcrand_pytype);
1561 INSERT("GCLatinRand", gclatinrand_pytype);
1562 rand_pyobj = grand_pywrap(&rand_global, 0); Py_INCREF(rand_pyobj);
1563 gccrands_dict = gccrands(); Py_INCREF(gccrands_dict);
1564 INSERT("gccrands", gccrands_dict);
1565 INSERT("rand", rand_pyobj);
1566 }
1567
1568 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings