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