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rand.c: Make nonce/IV arguments to cipher-based random generators optional.
[catacomb-python] / rand.c
CommitLineData
d7ab1bab 1/* -*-c-*-
2 *
d7ab1bab 3 * Random-number generators
4 *
5 * (c) 2004 Straylight/Edgeware
6 */
7
b2687a0a 8/*----- Licensing notice --------------------------------------------------*
d7ab1bab 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.
b2687a0a 16 *
d7ab1bab 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.
b2687a0a 21 *
d7ab1bab 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"
6640e060 30PUBLIC_SYMBOLS;
850a4b48 31#include "algorithms.h"
6640e060 32PRIVATE_SYMBOLS;
d7ab1bab 33
34/*----- Main code ---------------------------------------------------------*/
35
c6e89d48
MW		 36PyTypeObject *grand_pytype;
37static PyTypeObject *truerand_pytype;
38static PyTypeObject *lcrand_pytype, *fibrand_pytype;
39static PyTypeObject *dsarand_pytype, *bbs_pytype, *bbspriv_pytype;
40static PyTypeObject *sslprf_pytype, *tlsdx_pytype, *tlsprf_pytype;
d7ab1bab 41PyObject *rand_pyobj;
42
850a4b48
MW		 43static PyObject *gccrands_dict;
44
d7ab1bab 45static 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
55PyObject *grand_pywrap(grand *r, unsigned f)
56{
57 PyTypeObject *ty = grand_pytype;
850a4b48 58 PyObject *ob;
d7ab1bab 59
20441612
MW		 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;
a539ffb8
MW		 68 else if ((ob = PyMapping_GetItemString
69 (gccrands_dict, (/*unconst*/ char *)r->ops->name)) != 0)
850a4b48 70 ty = (PyTypeObject *)ob;
d7ab1bab 71 return (grand_dopywrap(ty, r, f));
72}
73
74CONVFUNC(grand, grand *, GRAND_R)
75
d65d80d7
MW		 76static int grand_check(PyObject *me)
77{
78 if (!GRAND_R(me)) VALERR("random generator object is no longer valid");
79 return (0);
80end:
81 return (-1);
82}
83
91e56f06 84static PyObject *grmeth_byte(PyObject *me)
d7ab1bab 85{
d65d80d7 86 if (grand_check(me)) return (0);
d7ab1bab 87 return (PyInt_FromLong(grand_byte(GRAND_R(me))));
88}
89
91e56f06 90static PyObject *grmeth_word(PyObject *me)
d7ab1bab 91{
d65d80d7 92 if (grand_check(me)) return (0);
fbca05a1 93 return (getulong(grand_word(GRAND_R(me))));
d7ab1bab 94}
95
96static 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);
d65d80d7 103 if (grand_check(me)) return (0);
d7ab1bab 104 if (PyInt_Check(m)) {
e147daf0
MW		 105 long mm = PyInt_AsLong(m);
106 if (mm == -1 && PyErr_Occurred()) PyErr_Clear();
107 else if (mm <= 0) goto notpos;
95ba7bc6 108 else if (mm <= 0xffffffff)
d7ab1bab 109 return (PyInt_FromLong(grand_range(GRAND_R(me), mm)));
110 }
95ba7bc6
MW		 111 if ((x = getmp(m)) == 0) goto end;
112 if (!MP_POSP(x)) goto notpos;
d7ab1bab 113 y = mprand_range(MP_NEW, x, GRAND_R(me), 0);
114 MP_DROP(x);
115 return (mp_pywrap(y));
cb08602a
MW		 116notpos:
117 VALERR("range must be strictly positive");
d7ab1bab 118end:
119 if (x) MP_DROP(x);
120 return (0);
121}
122
123static PyObject *grmeth_mp(PyObject *me, PyObject *arg, PyObject *kw)
124{
125 size_t l;
cb08602a 126 mpw o = 0;
827f89d7 127 static const char *const kwlist[] = { "bits", "or", 0 };
d7ab1bab 128
827f89d7 129 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:mp", KWLIST,
d7ab1bab 130 convszt, &l, convmpw, &o))
131 goto end;
d65d80d7 132 if (grand_check(me)) return (0);
cb08602a 133 if (l < MPW_BITS && (o >> l)) VALERR("or mask too large");
d7ab1bab 134 return (mp_pywrap(mprand(MP_NEW, l, GRAND_R(me), o)));
135end:
136 return (0);
137}
138
139static PyObject *grmeth_block(PyObject *me, PyObject *arg)
140{
141 unsigned long n;
142 PyObject *rc = 0;
143
144 if (!PyArg_ParseTuple(arg, "O&:block", convulong, &n)) goto end;
d65d80d7 145 if (grand_check(me)) return (0);
d7ab1bab 146 rc = bytestring_pywrap(0, n);
2135a6d3 147 grand_fill(GRAND_R(me), BIN_PTR(rc), n);
d7ab1bab 148end:
149 return (rc);
150}
151
152static int checkop(grand *r, unsigned op, const char *what)
153{
d65d80d7 154 if (r->ops->misc(r, GRAND_CHECK, op)) return (0);
d7ab1bab 155 PyErr_Format(PyExc_TypeError, "operation %s not supported", what);
156 return (-1);
157}
158
159static PyObject *grmeth_seedint(PyObject *me, PyObject *arg)
160{
161 int i;
162 grand *r = GRAND_R(me);
163 if (!PyArg_ParseTuple(arg, "i:seedint", &i) ||
d65d80d7 164 grand_check(me) || checkop(r, GRAND_SEEDINT, "seedint"))
d7ab1bab 165 goto end;
166 r->ops->misc(r, GRAND_SEEDINT, i);
167 RETURN_ME;
168end:
169 return (0);
170}
171
172static PyObject *grmeth_seedword(PyObject *me, PyObject *arg)
173{
174 uint32 u;
175 grand *r = GRAND_R(me);
176 if (!PyArg_ParseTuple(arg, "O&:seedword", convu32, &u) ||
d65d80d7 177 grand_check(me) || checkop(r, GRAND_SEEDUINT32, "seedword"))
d7ab1bab 178 goto end;
179 r->ops->misc(r, GRAND_SEEDUINT32, u);
180 RETURN_ME;
181end:
182 return (0);
183}
184
185static PyObject *grmeth_seedblock(PyObject *me, PyObject *arg)
186{
67c75893 187 struct bin in;
d7ab1bab 188 grand *r = GRAND_R(me);
67c75893 189 if (!PyArg_ParseTuple(arg, "O&:seedblock", convbin, &in) ||
d65d80d7 190 grand_check(me) || checkop(r, GRAND_SEEDBLOCK, "seedblock"))
d7ab1bab 191 goto end;
67c75893 192 r->ops->misc(r, GRAND_SEEDBLOCK, in.p, (size_t)in.sz);
d7ab1bab 193 RETURN_ME;
194end:
195 return (0);
196}
197
198static PyObject *grmeth_seedmp(PyObject *me, PyObject *arg)
199{
200 PyObject *x;
201 mp *xx;
202 grand *r = GRAND_R(me);
203 if (!PyArg_ParseTuple(arg, "O:seedmp", &x) ||
d65d80d7 204 grand_check(me) || checkop(r, GRAND_SEEDMP, "seedmp") ||
d7ab1bab 205 (xx = getmp(x)) == 0)
206 goto end;
207 r->ops->misc(r, GRAND_SEEDMP, xx);
208 MP_DROP(xx);
209 RETURN_ME;
210end:
211 return (0);
212}
213
214static PyObject *grmeth_seedrand(PyObject *me, PyObject *arg, PyObject *kw)
215{
827f89d7 216 static const char *const kwlist[] = { "rng", 0 };
d7ab1bab 217 grand *r = GRAND_R(me);
218 grand *rr = &rand_global;
827f89d7 219 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:seedrand", KWLIST,
d7ab1bab 220 convgrand, &rr) ||
d65d80d7 221 grand_check(me) || checkop(r, GRAND_SEEDRAND, "seedrand"))
d7ab1bab 222 goto end;
223 r->ops->misc(r, GRAND_SEEDRAND, rr);
224 RETURN_ME;
225end:
226 return (0);
227}
228
229static PyObject *grmeth_mask(PyObject *me, PyObject *arg)
230{
231 grand *r = GRAND_R(me);
67c75893
MW		 232 struct bin in;
233 const octet *p; size_t n;
234 octet *q;
d7ab1bab 235 PyObject *rc;
236
67c75893 237 if (!PyArg_ParseTuple(arg, "O&:mask", convbin, &in)) return (0);
d65d80d7 238 if (grand_check(me)) return (0);
67c75893 239 rc = bytestring_pywrap(0, in.sz);
2135a6d3 240 q = (octet *)BIN_PTR(rc);
67c75893
MW		 241 GR_FILL(r, q, in.sz);
242 p = in.p; n = in.sz; while (n--) *q++ ^= *p++;
d7ab1bab 243 return (rc);
244}
245
246static void grand_pydealloc(PyObject *me)
247{
248 grand_pyobj *g = (grand_pyobj *)me;
d65d80d7 249 if ((g->f & f_freeme) && g->r) GR_DESTROY(g->r);
3aa33042 250 FREEOBJ(me);
d7ab1bab 251}
252
253static PyObject *grget_name(PyObject *me, void *hunoz)
2135a6d3 254 { return (grand_check(me) ? 0 : TEXT_FROMSTR(GRAND_R(me)->ops->name)); }
d7ab1bab 255
256static PyObject *grget_cryptop(PyObject *me, void *hunoz)
d65d80d7 257 { return (grand_check(me) ? 0 : getbool(GRAND_R(me)->ops->f & GRAND_CRYPTO)); }
d7ab1bab 258
c90f712e 259static const PyGetSetDef grand_pygetset[] = {
d7ab1bab 260#define GETSETNAME(op, name) gr##op##_##name
261 GET (name, "R.name -> name of this kind of generator")
262 GET (cryptop, "R.cryptop -> flag: cryptographically strong?")
263#undef GETSETNAME
264 { 0 }
265};
266
c90f712e 267static const PyMethodDef grand_pymethods[] = {
d7ab1bab 268#define METHNAME(name) grmeth_##name
91e56f06
MW		 269 NAMETH(byte, "R.byte() -> BYTE")
270 NAMETH(word, "R.word() -> WORD")
d7ab1bab 271 METH (block, "R.block(N) -> STRING")
986bcc44 272 KWMETH(mp, "R.mp(bits, [or = 0]) -> MP")
d7ab1bab 273 METH (range, "R.range(MAX) -> INT")
274 METH (mask, "R.mask(STR) -> STR")
275 METH (seedint, "R.seedint(I)")
276 METH (seedword, "R.seedword(I)")
277 METH (seedblock, "R.seedblock(BYTES)")
278 METH (seedmp, "R.seedmp(X)")
279 KWMETH(seedrand, "R.seedrand(RR)")
280#undef METHNAME
281 { 0 }
282};
283
c263b05c 284static const PyTypeObject grand_pytype_skel = {
591bf41b 285 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 286 "GRand", /* @tp_name@ */
d7ab1bab 287 sizeof(grand_pyobj), /* @tp_basicsize@ */
288 0, /* @tp_itemsize@ */
289
290 grand_pydealloc, /* @tp_dealloc@ */
291 0, /* @tp_print@ */
292 0, /* @tp_getattr@ */
293 0, /* @tp_setattr@ */
294 0, /* @tp_compare@ */
295 0, /* @tp_repr@ */
296 0, /* @tp_as_number@ */
297 0, /* @tp_as_sequence@ */
298 0, /* @tp_as_mapping@ */
299 0, /* @tp_hash@ */
300 0, /* @tp_call@ */
301 0, /* @tp_str@ */
302 0, /* @tp_getattro@ */
303 0, /* @tp_setattro@ */
304 0, /* @tp_as_buffer@ */
305 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
306 Py_TPFLAGS_BASETYPE,
307
308 /* @tp_doc@ */
d96c882e 309 "Generic random number source.",
d7ab1bab 310
311 0, /* @tp_traverse@ */
312 0, /* @tp_clear@ */
313 0, /* @tp_richcompare@ */
314 0, /* @tp_weaklistoffset@ */
315 0, /* @tp_iter@ */
963a6148 316 0, /* @tp_iternext@ */
c90f712e 317 PYMETHODS(grand), /* @tp_methods@ */
d7ab1bab 318 0, /* @tp_members@ */
c90f712e 319 PYGETSET(grand), /* @tp_getset@ */
d7ab1bab 320 0, /* @tp_base@ */
321 0, /* @tp_dict@ */
322 0, /* @tp_descr_get@ */
323 0, /* @tp_descr_set@ */
324 0, /* @tp_dictoffset@ */
325 0, /* @tp_init@ */
326 PyType_GenericAlloc, /* @tp_alloc@ */
327 abstract_pynew, /* @tp_new@ */
3aa33042 328 0, /* @tp_free@ */
d7ab1bab 329 0 /* @tp_is_gc@ */
330};
331
332static PyObject *lcrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
333{
334 uint32 n = 0;
827f89d7
MW		 335 static const char *const kwlist[] = { "seed", 0 };
336 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
d7ab1bab 337 return (0);
338 return (grand_dopywrap(lcrand_pytype, lcrand_create(n), f_freeme));
339}
340
c263b05c 341static const PyTypeObject lcrand_pytype_skel = {
591bf41b 342 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 343 "LCRand", /* @tp_name@ */
d7ab1bab 344 sizeof(grand_pyobj), /* @tp_basicsize@ */
345 0, /* @tp_itemsize@ */
346
347 grand_pydealloc, /* @tp_dealloc@ */
348 0, /* @tp_print@ */
349 0, /* @tp_getattr@ */
350 0, /* @tp_setattr@ */
351 0, /* @tp_compare@ */
352 0, /* @tp_repr@ */
353 0, /* @tp_as_number@ */
354 0, /* @tp_as_sequence@ */
355 0, /* @tp_as_mapping@ */
356 0, /* @tp_hash@ */
357 0, /* @tp_call@ */
358 0, /* @tp_str@ */
359 0, /* @tp_getattro@ */
360 0, /* @tp_setattro@ */
361 0, /* @tp_as_buffer@ */
362 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
363 Py_TPFLAGS_BASETYPE,
364
365 /* @tp_doc@ */
d96c882e 366 "LCRand([seed = 0]): linear congruential generator.",
d7ab1bab 367
368 0, /* @tp_traverse@ */
369 0, /* @tp_clear@ */
370 0, /* @tp_richcompare@ */
371 0, /* @tp_weaklistoffset@ */
372 0, /* @tp_iter@ */
963a6148 373 0, /* @tp_iternext@ */
d7ab1bab 374 0, /* @tp_methods@ */
375 0, /* @tp_members@ */
376 0, /* @tp_getset@ */
377 0, /* @tp_base@ */
378 0, /* @tp_dict@ */
379 0, /* @tp_descr_get@ */
380 0, /* @tp_descr_set@ */
381 0, /* @tp_dictoffset@ */
382 0, /* @tp_init@ */
383 PyType_GenericAlloc, /* @tp_alloc@ */
384 lcrand_pynew, /* @tp_new@ */
3aa33042 385 0, /* @tp_free@ */
d7ab1bab 386 0 /* @tp_is_gc@ */
387};
388
389static PyObject *fibrand_pynew(PyTypeObject *me, PyObject *arg, PyObject *kw)
390{
391 uint32 n = 0;
827f89d7
MW		 392 static const char *const kwlist[] = { "seed", 0 };
393 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", KWLIST, convu32, &n))
d7ab1bab 394 return (0);
395 return (grand_dopywrap(fibrand_pytype, fibrand_create(n), f_freeme));
396}
397
c263b05c 398static const PyTypeObject fibrand_pytype_skel = {
591bf41b 399 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 400 "FibRand", /* @tp_name@ */
d7ab1bab 401 sizeof(grand_pyobj), /* @tp_basicsize@ */
402 0, /* @tp_itemsize@ */
403
404 grand_pydealloc, /* @tp_dealloc@ */
405 0, /* @tp_print@ */
406 0, /* @tp_getattr@ */
407 0, /* @tp_setattr@ */
408 0, /* @tp_compare@ */
409 0, /* @tp_repr@ */
410 0, /* @tp_as_number@ */
411 0, /* @tp_as_sequence@ */
412 0, /* @tp_as_mapping@ */
413 0, /* @tp_hash@ */
414 0, /* @tp_call@ */
415 0, /* @tp_str@ */
416 0, /* @tp_getattro@ */
417 0, /* @tp_setattro@ */
418 0, /* @tp_as_buffer@ */
419 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
420 Py_TPFLAGS_BASETYPE,
421
422 /* @tp_doc@ */
d96c882e 423 "FibRand([seed = 0]): Fibonacci generator.",
d7ab1bab 424
425 0, /* @tp_traverse@ */
426 0, /* @tp_clear@ */
427 0, /* @tp_richcompare@ */
428 0, /* @tp_weaklistoffset@ */
429 0, /* @tp_iter@ */
963a6148 430 0, /* @tp_iternext@ */
d7ab1bab 431 0, /* @tp_methods@ */
432 0, /* @tp_members@ */
433 0, /* @tp_getset@ */
434 0, /* @tp_base@ */
435 0, /* @tp_dict@ */
436 0, /* @tp_descr_get@ */
437 0, /* @tp_descr_set@ */
438 0, /* @tp_dictoffset@ */
439 0, /* @tp_init@ */
440 PyType_GenericAlloc, /* @tp_alloc@ */
441 fibrand_pynew, /* @tp_new@ */
3aa33042 442 0, /* @tp_free@ */
d7ab1bab 443 0 /* @tp_is_gc@ */
444};
445
446/*----- True random generator ---------------------------------------------*/
447
91e56f06
MW		 448static PyObject *trmeth_gate(PyObject *me)
449 { grand *r = GRAND_R(me); r->ops->misc(GRAND_R(me), RAND_GATE); RETURN_ME; }
d7ab1bab 450
91e56f06
MW		 451static PyObject *trmeth_stretch(PyObject *me)
452 { grand *r = GRAND_R(me); r->ops->misc(r, RAND_STRETCH); RETURN_ME; }
d7ab1bab 453
850a4b48
MW		 454static PyObject *trmeth_add(PyObject *me, PyObject *arg)
455{
456 grand *r = GRAND_R(me);
67c75893
MW		 457 struct bin in; unsigned goodbits;
458 if (!PyArg_ParseTuple(arg, "O&O&:add", convbin, &in, convuint, &goodbits))
850a4b48 459 return (0);
67c75893 460 r->ops->misc(r, RAND_ADD, in.p, (size_t)in.sz, goodbits);
850a4b48
MW		 461 RETURN_ME;
462}
463
d7ab1bab 464static PyObject *trmeth_key(PyObject *me, PyObject *arg)
465{
466 grand *r = GRAND_R(me);
67c75893
MW		 467 struct bin k;
468 if (!PyArg_ParseTuple(arg, "O&:key", convbin, &k)) return (0);
469 r->ops->misc(r, RAND_KEY, k.p, (size_t)k.sz);
d7ab1bab 470 RETURN_ME;
471}
472
473static PyObject *trmeth_seed(PyObject *me, PyObject *arg)
474{
475 grand *r = GRAND_R(me);
476 unsigned u;
477 if (!PyArg_ParseTuple(arg, "O&:seed", convuint, &u)) return (0);
478 if (u > RAND_IBITS) VALERR("pointlessly large");
479 r->ops->misc(r, RAND_SEED, u);
480 RETURN_ME;
481end:
482 return (0);
483}
484
91e56f06
MW		 485static PyObject *trmeth_timer(PyObject *me)
486 { grand *r = GRAND_R(me); r->ops->misc(r, RAND_TIMER); RETURN_ME; }
d7ab1bab 487
488static PyObject *truerand_pynew(PyTypeObject *ty,
489 PyObject *arg, PyObject *kw)
490{
827f89d7 491 static const char *const kwlist[] = { 0 };
d7ab1bab 492 grand *r;
493 PyObject *rc = 0;
7f38dc76 494 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", KWLIST)) goto end;
d7ab1bab 495 r = rand_create();
496 r->ops->misc(r, RAND_NOISESRC, &noise_source);
497 r->ops->misc(r, RAND_SEED, 160);
498 rc = grand_dopywrap(ty, r, f_freeme);
499end:
500 return (rc);
501}
502
c90f712e 503static const PyMethodDef truerand_pymethods[] = {
d7ab1bab 504#define METHNAME(name) trmeth_##name
91e56f06
MW		 505 NAMETH(gate, "R.gate()")
506 NAMETH(stretch, "R.stretch()")
d7ab1bab 507 METH (key, "R.key(BYTES)")
508 METH (seed, "R.seed(NBITS)")
850a4b48 509 METH (add, "R.add(BYTES, GOODBITS")
91e56f06 510 NAMETH(timer, "R.timer()")
d7ab1bab 511#undef METHNAME
512 { 0 }
513};
514
515static PyObject *trget_goodbits(PyObject *me, void *hunoz)
516{
517 grand *r = GRAND_R(me);
518 return (PyInt_FromLong(r->ops->misc(r, RAND_GOODBITS)));
519}
520
c90f712e 521static const PyGetSetDef truerand_pygetset[] = {
d7ab1bab 522#define GETSETNAME(op, name) tr##op##_##name
b2687a0a 523 GET (goodbits, "R.goodbits -> good bits of entropy remaining")
d7ab1bab 524#undef GETSETNAME
525 { 0 }
526};
527
c263b05c 528static const PyTypeObject truerand_pytype_skel = {
591bf41b 529 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 530 "TrueRand", /* @tp_name@ */
d7ab1bab 531 sizeof(grand_pyobj), /* @tp_basicsize@ */
532 0, /* @tp_itemsize@ */
533
534 grand_pydealloc, /* @tp_dealloc@ */
535 0, /* @tp_print@ */
536 0, /* @tp_getattr@ */
537 0, /* @tp_setattr@ */
538 0, /* @tp_compare@ */
539 0, /* @tp_repr@ */
540 0, /* @tp_as_number@ */
541 0, /* @tp_as_sequence@ */
542 0, /* @tp_as_mapping@ */
543 0, /* @tp_hash@ */
544 0, /* @tp_call@ */
545 0, /* @tp_str@ */
546 0, /* @tp_getattro@ */
547 0, /* @tp_setattro@ */
548 0, /* @tp_as_buffer@ */
549 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
550 Py_TPFLAGS_BASETYPE,
551
552 /* @tp_doc@ */
d96c882e 553 "TrueRand(): true random number source.",
d7ab1bab 554
555 0, /* @tp_traverse@ */
556 0, /* @tp_clear@ */
557 0, /* @tp_richcompare@ */
558 0, /* @tp_weaklistoffset@ */
559 0, /* @tp_iter@ */
963a6148 560 0, /* @tp_iternext@ */
c90f712e 561 PYMETHODS(truerand), /* @tp_methods@ */
d7ab1bab 562 0, /* @tp_members@ */
c90f712e 563 PYGETSET(truerand), /* @tp_getset@ */
d7ab1bab 564 0, /* @tp_base@ */
565 0, /* @tp_dict@ */
566 0, /* @tp_descr_get@ */
567 0, /* @tp_descr_set@ */
568 0, /* @tp_dictoffset@ */
569 0, /* @tp_init@ */
570 PyType_GenericAlloc, /* @tp_alloc@ */
571 truerand_pynew, /* @tp_new@ */
3aa33042 572 0, /* @tp_free@ */
d7ab1bab 573 0 /* @tp_is_gc@ */
574};
575
850a4b48
MW		 576/*----- Generators from symmetric encryption algorithms -------------------*/
577
35e5469a 578static PyTypeObject *gccrand_pytype, *gcrand_pytype, *gclatinrand_pytype;
850a4b48
MW		 579
580typedef grand *gcrand_func(const void *, size_t sz);
581typedef grand *gcirand_func(const void *, size_t sz, uint32);
3f4f64b8 582typedef grand *gcnrand_func(const void *, size_t sz, const void *);
6bd22b53
MW		 583typedef grand *gcshakerand_func(const void *, size_t,
584 const void *, size_t,
585 const void *, size_t);
586typedef grand *gcshafuncrand_func(const void *, size_t,
587 const void *, size_t);
588typedef grand *gckmacrand_func(const void *, size_t, const void *, size_t);
850a4b48
MW		 589typedef struct gccrand_info {
590 const char *name;
591 const octet *keysz;
592 unsigned f;
3f4f64b8 593 size_t noncesz;
850a4b48
MW		 594 gcrand_func *func;
595} gccrand_info;
596
34825452
MW		 597#define RNGF_MASK 255u
598
599enum {
600 RNG_PLAIN = 0,
601 RNG_SEAL,
602 RNG_LATIN,
603 RNG_SHAKE,
604 RNG_KMAC
605};
78f06cd3 606
850a4b48
MW		 607typedef struct gccrand_pyobj {
608 PyHeapTypeObject ty;
609 const gccrand_info *info;
610} gccrand_pyobj;
611#define GCCRAND_INFO(o) (((gccrand_pyobj *)(o))->info)
612
3f4f64b8 613#define GCCRAND_DEF(name, ksz, func, f, nsz) \
850a4b48 614 static const gccrand_info func##_info = \
3f4f64b8 615 { name, ksz, f, nsz, (gcrand_func *)func };
850a4b48
MW		 616RNGS(GCCRAND_DEF)
617
618static const gccrand_info *const gcrandtab[] = {
3f4f64b8 619#define GCCRAND_ENTRY(name, ksz, func, f, nsz) &func##_info,
850a4b48
MW		 620 RNGS(GCCRAND_ENTRY)
621 0
622};
623
624static PyObject *gcrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
625{
626 const gccrand_info *info = GCCRAND_INFO(ty);
827f89d7 627 static const char *const kwlist[] = { "key", 0 };
67c75893 628 struct bin k;
850a4b48 629
67c75893 630 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &k))
850a4b48 631 goto end;
67c75893
MW		 632 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
633 return (grand_dopywrap(ty, info->func(k.p, k.sz), f_freeme));
850a4b48 634end:
b2687a0a 635 return (0);
850a4b48
MW		 636}
637
638static PyObject *gcirand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
639{
640 const gccrand_info *info = GCCRAND_INFO(ty);
641 uint32 i = 0;
827f89d7 642 static const char *const kwlist[] = { "key", "i", 0 };
67c75893 643 struct bin k;
850a4b48 644
e7054c92 645 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
67c75893 646 convbin, &k, convu32, &i))
850a4b48 647 goto end;
67c75893 648 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
850a4b48 649 return (grand_dopywrap(ty,
67c75893 650 ((gcirand_func *)info->func)(k.p, k.sz, i),
850a4b48
MW		 651 f_freeme));
652end:
b2687a0a 653 return (0);
850a4b48
MW		 654}
655
3f4f64b8
MW		 656static PyObject *gcnrand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
657{
658 const gccrand_info *info = GCCRAND_INFO(ty);
827f89d7 659 static const char *const kwlist[] = { "key", "nonce", 0 };
e7054c92 660 static const octet zn[24] = { 0 };
67c75893 661 struct bin k, n;
3f4f64b8 662
e7054c92
MW		 663 n.p = zn; n.sz = info->noncesz; assert(info->noncesz <= sizeof(zn));
664 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
67c75893 665 convbin, &k, convbin, &n))
3f4f64b8 666 goto end;
67c75893
MW		 667 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
668 if (n.sz != info->noncesz) VALERR("bad nonce length");
3f4f64b8 669 return (grand_dopywrap(ty,
67c75893 670 ((gcnrand_func *)info->func)(k.p, k.sz, n.p),
3f4f64b8
MW		 671 f_freeme));
672end:
673 return (0);
674}
675
6bd22b53
MW		 676static PyObject *gcshakyrand_pynew(PyTypeObject *ty,
677 PyObject *arg, PyObject *kw)
678{
679 const gccrand_info *info = GCCRAND_INFO(ty);
827f89d7
MW		 680 static const char
681 *const kwlist_shake[] = { "key", "func", "perso", 0 },
682 *const kwlist_func[] = { "key", "perso", 0 };
67c75893 683 struct bin k, f = { 0, 0 }, p = { 0, 0 };
6bd22b53
MW		 684
685 if ((info->f&RNGF_MASK) == RNG_SHAKE
67c75893 686 ? !PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&O&:new",
827f89d7 687 (/*unconst*/ char **)kwlist_shake,
67c75893
MW		 688 convbin, &k,
689 convbin, &f, convbin, &p)
690 : !PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new",
827f89d7 691 (/*unconst*/ char **)kwlist_func,
67c75893 692 convbin, &k, convbin, &p))
6bd22b53 693 goto end;
67c75893 694 if (keysz(k.sz, info->keysz) != k.sz) VALERR("bad key length");
6bd22b53
MW		 695 return (grand_dopywrap(ty,
696 (info->f&RNGF_MASK) == RNG_SHAKE
67c75893
MW		 697 ? ((gcshakerand_func *)info->func)(f.p, f.sz,
698 p.p, p.sz,
699 k.p, k.sz)
700 : ((gcshafuncrand_func *)info->func)(p.p, p.sz,
701 k.p, k.sz),
6bd22b53
MW		 702 f_freeme));
703end:
704 return (0);
705}
706
850a4b48
MW		 707static PyObject *gccrand_pywrap(const gccrand_info *info)
708{
709 gccrand_pyobj *g = newtype(gccrand_pytype, 0, info->name);
710 g->info = info;
24b3d57b 711 g->ty.ht_type.tp_basicsize = sizeof(grand_pyobj);
34825452
MW		 712 switch (info->f&RNGF_MASK) {
713 case RNG_LATIN: g->ty.ht_type.tp_base = gclatinrand_pytype; break;
714 default: g->ty.ht_type.tp_base = gcrand_pytype; break;
715 }
35e5469a 716 Py_INCREF(g->ty.ht_type.tp_base);
24b3d57b
MW		 717 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
718 Py_TPFLAGS_BASETYPE |
719 Py_TPFLAGS_HEAPTYPE);
720 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
721 g->ty.ht_type.tp_free = 0;
34825452
MW		 722 switch (info->f&RNGF_MASK) {
723 case RNG_LATIN: g->ty.ht_type.tp_new = gcnrand_pynew; break;
724 case RNG_SEAL: g->ty.ht_type.tp_new = gcirand_pynew; break;
6bd22b53
MW		 725 case RNG_SHAKE: case RNG_KMAC:
726 g->ty.ht_type.tp_new = gcshakyrand_pynew; break;
34825452
MW		 727 default: g->ty.ht_type.tp_new = gcrand_pynew; break;
728 }
dc075750 729 typeready(&g->ty.ht_type);
850a4b48
MW		 730 return ((PyObject *)g);
731}
732
733static PyObject *gccrget_name(PyObject *me, void *hunoz)
2135a6d3 734 { return (TEXT_FROMSTR(GCCRAND_INFO(me)->name)); }
850a4b48
MW		 735static PyObject *gccrget_keysz(PyObject *me, void *hunoz)
736 { return (keysz_pywrap(GCCRAND_INFO(me)->keysz)); }
737
91e56f06 738static PyObject *gclrmeth_tell(PyObject *me)
35e5469a
MW		 739{
740 grand *r = GRAND_R(me);
741 PyObject *rc = 0;
742 kludge64 off;
743
35e5469a
MW		 744 r->ops->misc(r, SALSA20_TELLU64, &off);
745 rc = getk64(off);
746 return (rc);
747}
748
749static PyObject *gclrmeth_seek(PyObject *me, PyObject *arg)
750{
751 grand *r = GRAND_R(me);
752 kludge64 off;
753
754 if (!PyArg_ParseTuple(arg, "O&:seek", convk64, &off)) return (0);
755 r->ops->misc(r, SALSA20_SEEKU64, off);
756 RETURN_ME;
757}
758
c90f712e 759static const PyGetSetDef gccrand_pygetset[] = {
850a4b48 760#define GETSETNAME(op, name) gccr##op##_##name
d96c882e
MW		 761 GET (keysz, "CR.keysz -> acceptable key sizes")
762 GET (name, "CR.name -> name of this kind of generator")
850a4b48
MW		 763#undef GETSETNAME
764 { 0 }
765};
766
c90f712e 767static const PyMethodDef gclatinrand_pymethods[] = {
35e5469a 768#define METHNAME(name) gclrmeth_##name
91e56f06 769 NAMETH(tell, "R.tell() -> OFF")
35e5469a
MW		 770 METH (seek, "R.seek(OFF)")
771#undef METHNAME
772 { 0 }
773};
774
c263b05c 775static const PyTypeObject gccrand_pytype_skel = {
591bf41b 776 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 777 "GCCRand", /* @tp_name@ */
850a4b48
MW		 778 sizeof(gccrand_pyobj), /* @tp_basicsize@ */
779 0, /* @tp_itemsize@ */
780
781 0, /* @tp_dealloc@ */
782 0, /* @tp_print@ */
783 0, /* @tp_getattr@ */
784 0, /* @tp_setattr@ */
785 0, /* @tp_compare@ */
786 0, /* @tp_repr@ */
787 0, /* @tp_as_number@ */
788 0, /* @tp_as_sequence@ */
789 0, /* @tp_as_mapping@ */
790 0, /* @tp_hash@ */
791 0, /* @tp_call@ */
792 0, /* @tp_str@ */
793 0, /* @tp_getattro@ */
794 0, /* @tp_setattro@ */
795 0, /* @tp_as_buffer@ */
796 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
797 Py_TPFLAGS_BASETYPE,
798
799 /* @tp_doc@ */
d96c882e 800 "Metaclass for symmetric crypto-based generators.",
850a4b48
MW		 801
802 0, /* @tp_traverse@ */
803 0, /* @tp_clear@ */
804 0, /* @tp_richcompare@ */
805 0, /* @tp_weaklistoffset@ */
806 0, /* @tp_iter@ */
807 0, /* @tp_iternext@ */
808 0, /* @tp_methods@ */
809 0, /* @tp_members@ */
c90f712e 810 PYGETSET(gccrand), /* @tp_getset@ */
850a4b48
MW		 811 0, /* @tp_base@ */
812 0, /* @tp_dict@ */
813 0, /* @tp_descr_get@ */
814 0, /* @tp_descr_set@ */
815 0, /* @tp_dictoffset@ */
816 0, /* @tp_init@ */
817 PyType_GenericAlloc, /* @tp_alloc@ */
818 abstract_pynew, /* @tp_new@ */
819 0, /* @tp_free@ */
820 0 /* @tp_is_gc@ */
821};
822
c263b05c 823static const PyTypeObject gcrand_pytype_skel = {
591bf41b 824 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 825 "GCRand", /* @tp_name@ */
850a4b48
MW		 826 sizeof(grand_pyobj), /* @tp_basicsize@ */
827 0, /* @tp_itemsize@ */
828
829 grand_pydealloc, /* @tp_dealloc@ */
830 0, /* @tp_print@ */
831 0, /* @tp_getattr@ */
832 0, /* @tp_setattr@ */
833 0, /* @tp_compare@ */
834 0, /* @tp_repr@ */
835 0, /* @tp_as_number@ */
836 0, /* @tp_as_sequence@ */
837 0, /* @tp_as_mapping@ */
838 0, /* @tp_hash@ */
839 0, /* @tp_call@ */
840 0, /* @tp_str@ */
841 0, /* @tp_getattro@ */
842 0, /* @tp_setattro@ */
843 0, /* @tp_as_buffer@ */
844 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
845 Py_TPFLAGS_BASETYPE,
846
847 /* @tp_doc@ */
d96c882e 848 "Abstract base class for symmetric crypto-based generators.",
850a4b48
MW		 849
850 0, /* @tp_traverse@ */
851 0, /* @tp_clear@ */
852 0, /* @tp_richcompare@ */
853 0, /* @tp_weaklistoffset@ */
854 0, /* @tp_iter@ */
855 0, /* @tp_iternext@ */
856 0, /* @tp_methods@ */
857 0, /* @tp_members@ */
858 0, /* @tp_getset@ */
859 0, /* @tp_base@ */
860 0, /* @tp_dict@ */
861 0, /* @tp_descr_get@ */
862 0, /* @tp_descr_set@ */
863 0, /* @tp_dictoffset@ */
864 0, /* @tp_init@ */
865 PyType_GenericAlloc, /* @tp_alloc@ */
866 abstract_pynew, /* @tp_new@ */
867 0, /* @tp_free@ */
868 0 /* @tp_is_gc@ */
869};
870
c263b05c 871static const PyTypeObject gclatinrand_pytype_skel = {
591bf41b 872 PyVarObject_HEAD_INIT(0, 0) /* Header */
35e5469a
MW		 873 "GCLatinRand", /* @tp_name@ */
874 sizeof(grand_pyobj), /* @tp_basicsize@ */
875 0, /* @tp_itemsize@ */
876
877 grand_pydealloc, /* @tp_dealloc@ */
878 0, /* @tp_print@ */
879 0, /* @tp_getattr@ */
880 0, /* @tp_setattr@ */
881 0, /* @tp_compare@ */
882 0, /* @tp_repr@ */
883 0, /* @tp_as_number@ */
884 0, /* @tp_as_sequence@ */
885 0, /* @tp_as_mapping@ */
886 0, /* @tp_hash@ */
887 0, /* @tp_call@ */
888 0, /* @tp_str@ */
889 0, /* @tp_getattro@ */
890 0, /* @tp_setattro@ */
891 0, /* @tp_as_buffer@ */
892 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
893 Py_TPFLAGS_BASETYPE,
894
895 /* @tp_doc@ */
d96c882e 896 "Abstract base class for symmetric crypto-based generators.",
35e5469a
MW		 897
898 0, /* @tp_traverse@ */
899 0, /* @tp_clear@ */
900 0, /* @tp_richcompare@ */
901 0, /* @tp_weaklistoffset@ */
902 0, /* @tp_iter@ */
903 0, /* @tp_iternext@ */
c90f712e 904 PYMETHODS(gclatinrand), /* @tp_methods@ */
35e5469a
MW		 905 0, /* @tp_members@ */
906 0, /* @tp_getset@ */
907 0, /* @tp_base@ */
908 0, /* @tp_dict@ */
909 0, /* @tp_descr_get@ */
910 0, /* @tp_descr_set@ */
911 0, /* @tp_dictoffset@ */
912 0, /* @tp_init@ */
913 PyType_GenericAlloc, /* @tp_alloc@ */
914 abstract_pynew, /* @tp_new@ */
915 0, /* @tp_free@ */
916 0 /* @tp_is_gc@ */
917};
918
d7ab1bab 919/*----- SSL and TLS generators --------------------------------------------*/
920
921static PyObject *sslprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
922{
67c75893 923 struct bin k, s;
d7ab1bab 924 const gchash *hco = &md5, *hci = &sha;
925 PyObject *rc = 0;
827f89d7 926 static const char *const kwlist[] = { "key", "seed", "ohash", "ihash", 0 };
d7ab1bab 927
67c75893
MW		 928 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", KWLIST,
929 convbin, &k, convbin, &s,
d7ab1bab 930 convgchash, &hco, convgchash, &hci))
931 goto end;
67c75893
MW		 932 rc = grand_dopywrap(ty, sslprf_rand(hco, hci, k.p, k.sz, s.p, s.sz),
933 f_freeme);
d7ab1bab 934end:
935 return (rc);
936}
937
938static PyObject *tlsdx_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
939{
67c75893 940 struct bin k, s;
d7ab1bab 941 const gcmac *mc = &sha_hmac;
942 PyObject *rc = 0;
827f89d7 943 static const char *const kwlist[] = { "key", "seed", "mac", 0 };
d7ab1bab 944
67c75893
MW		 945 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&:new", KWLIST,
946 convbin, &k, convbin, &s,
d7ab1bab 947 convgcmac, &mc))
948 goto end;
67c75893 949 rc = grand_dopywrap(ty, tlsdx_rand(mc, k.p, k.sz, s.p, s.sz), f_freeme);
d7ab1bab 950end:
951 return (rc);
952}
953
954static PyObject *tlsprf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
955{
67c75893 956 struct bin k, s;
d7ab1bab 957 const gcmac *mcl = &md5_hmac, *mcr = &sha_hmac;
958 PyObject *rc = 0;
827f89d7 959 static const char *const kwlist[] = { "key", "seed", "lmac", "rmac", 0 };
d7ab1bab 960
67c75893
MW		 961 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", KWLIST,
962 convbin, &k, convbin, &s,
d7ab1bab 963 convgcmac, &mcl, convgcmac, &mcr))
964 goto end;
67c75893
MW		 965 rc = grand_dopywrap(ty, tlsprf_rand(mcl, mcr, k.p, k.sz, s.p, s.sz),
966 f_freeme);
d7ab1bab 967end:
968 return (rc);
969}
970
c263b05c 971static const PyTypeObject sslprf_pytype_skel = {
591bf41b 972 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 973 "SSLRand", /* @tp_name@ */
d7ab1bab 974 sizeof(grand_pyobj), /* @tp_basicsize@ */
975 0, /* @tp_itemsize@ */
976
977 grand_pydealloc, /* @tp_dealloc@ */
978 0, /* @tp_print@ */
979 0, /* @tp_getattr@ */
980 0, /* @tp_setattr@ */
981 0, /* @tp_compare@ */
982 0, /* @tp_repr@ */
983 0, /* @tp_as_number@ */
984 0, /* @tp_as_sequence@ */
985 0, /* @tp_as_mapping@ */
986 0, /* @tp_hash@ */
987 0, /* @tp_call@ */
988 0, /* @tp_str@ */
989 0, /* @tp_getattro@ */
990 0, /* @tp_setattro@ */
991 0, /* @tp_as_buffer@ */
992 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
993 Py_TPFLAGS_BASETYPE,
994
995 /* @tp_doc@ */
d96c882e
MW		 996 "SSLRand(KEY, SEED, [ohash = md5], [ihash = sha]):\n"
997 " RNG for SSL master secret.",
d7ab1bab 998
999 0, /* @tp_traverse@ */
1000 0, /* @tp_clear@ */
1001 0, /* @tp_richcompare@ */
1002 0, /* @tp_weaklistoffset@ */
1003 0, /* @tp_iter@ */
963a6148 1004 0, /* @tp_iternext@ */
d7ab1bab 1005 0, /* @tp_methods@ */
1006 0, /* @tp_members@ */
1007 0, /* @tp_getset@ */
1008 0, /* @tp_base@ */
1009 0, /* @tp_dict@ */
1010 0, /* @tp_descr_get@ */
1011 0, /* @tp_descr_set@ */
1012 0, /* @tp_dictoffset@ */
1013 0, /* @tp_init@ */
1014 PyType_GenericAlloc, /* @tp_alloc@ */
1015 sslprf_pynew, /* @tp_new@ */
3aa33042 1016 0, /* @tp_free@ */
d7ab1bab 1017 0 /* @tp_is_gc@ */
1018};
1019
c263b05c 1020static const PyTypeObject tlsdx_pytype_skel = {
591bf41b 1021 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 1022 "TLSDataExpansion", /* @tp_name@ */
d7ab1bab 1023 sizeof(grand_pyobj), /* @tp_basicsize@ */
1024 0, /* @tp_itemsize@ */
1025
1026 grand_pydealloc, /* @tp_dealloc@ */
1027 0, /* @tp_print@ */
1028 0, /* @tp_getattr@ */
1029 0, /* @tp_setattr@ */
1030 0, /* @tp_compare@ */
1031 0, /* @tp_repr@ */
1032 0, /* @tp_as_number@ */
1033 0, /* @tp_as_sequence@ */
1034 0, /* @tp_as_mapping@ */
1035 0, /* @tp_hash@ */
1036 0, /* @tp_call@ */
1037 0, /* @tp_str@ */
1038 0, /* @tp_getattro@ */
1039 0, /* @tp_setattro@ */
1040 0, /* @tp_as_buffer@ */
1041 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1042 Py_TPFLAGS_BASETYPE,
1043
1044 /* @tp_doc@ */
d96c882e
MW		 1045 "TLSDataExpansion(KEY, SEED, [mac = sha_hmac]):\n"
1046 " TLS data expansion function.",
d7ab1bab 1047
1048 0, /* @tp_traverse@ */
1049 0, /* @tp_clear@ */
1050 0, /* @tp_richcompare@ */
1051 0, /* @tp_weaklistoffset@ */
1052 0, /* @tp_iter@ */
963a6148 1053 0, /* @tp_iternext@ */
d7ab1bab 1054 0, /* @tp_methods@ */
1055 0, /* @tp_members@ */
1056 0, /* @tp_getset@ */
1057 0, /* @tp_base@ */
1058 0, /* @tp_dict@ */
1059 0, /* @tp_descr_get@ */
1060 0, /* @tp_descr_set@ */
1061 0, /* @tp_dictoffset@ */
1062 0, /* @tp_init@ */
1063 PyType_GenericAlloc, /* @tp_alloc@ */
1064 tlsdx_pynew, /* @tp_new@ */
3aa33042 1065 0, /* @tp_free@ */
d7ab1bab 1066 0 /* @tp_is_gc@ */
1067};
1068
c263b05c 1069static const PyTypeObject tlsprf_pytype_skel = {
591bf41b 1070 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 1071 "TLSPRF", /* @tp_name@ */
d7ab1bab 1072 sizeof(grand_pyobj), /* @tp_basicsize@ */
1073 0, /* @tp_itemsize@ */
1074
1075 grand_pydealloc, /* @tp_dealloc@ */
1076 0, /* @tp_print@ */
1077 0, /* @tp_getattr@ */
1078 0, /* @tp_setattr@ */
1079 0, /* @tp_compare@ */
1080 0, /* @tp_repr@ */
1081 0, /* @tp_as_number@ */
1082 0, /* @tp_as_sequence@ */
1083 0, /* @tp_as_mapping@ */
1084 0, /* @tp_hash@ */
1085 0, /* @tp_call@ */
1086 0, /* @tp_str@ */
1087 0, /* @tp_getattro@ */
1088 0, /* @tp_setattro@ */
1089 0, /* @tp_as_buffer@ */
1090 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1091 Py_TPFLAGS_BASETYPE,
1092
1093 /* @tp_doc@ */
d96c882e
MW		 1094 "TLSPRF(KEY, SEED, [lmac = md5_hmac], [rmac = sha_hmac]):\n"
1095 " TLS pseudorandom function.",
d7ab1bab 1096
1097 0, /* @tp_traverse@ */
1098 0, /* @tp_clear@ */
1099 0, /* @tp_richcompare@ */
1100 0, /* @tp_weaklistoffset@ */
1101 0, /* @tp_iter@ */
963a6148 1102 0, /* @tp_iternext@ */
d7ab1bab 1103 0, /* @tp_methods@ */
1104 0, /* @tp_members@ */
1105 0, /* @tp_getset@ */
1106 0, /* @tp_base@ */
1107 0, /* @tp_dict@ */
1108 0, /* @tp_descr_get@ */
1109 0, /* @tp_descr_set@ */
1110 0, /* @tp_dictoffset@ */
1111 0, /* @tp_init@ */
1112 PyType_GenericAlloc, /* @tp_alloc@ */
1113 tlsprf_pynew, /* @tp_new@ */
3aa33042 1114 0, /* @tp_free@ */
d7ab1bab 1115 0 /* @tp_is_gc@ */
1116};
1117
1118/*----- DSA generator -----------------------------------------------------*/
1119
1120static PyObject *dsarand_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1121{
67c75893 1122 struct bin in;
d7ab1bab 1123 PyObject *rc = 0;
827f89d7 1124 static const char *const kwlist[] = { "seed", 0 };
d7ab1bab 1125
67c75893 1126 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", KWLIST, convbin, &in))
d7ab1bab 1127 goto end;
67c75893 1128 rc = grand_dopywrap(ty, dsarand_create(in.p, in.sz), f_freeme);
d7ab1bab 1129end:
98963817 1130 return (rc);
d7ab1bab 1131}
1132
1133static PyObject *drget_seed(PyObject *me, void *hunoz)
1134{
1135 grand *r = GRAND_R(me);
1136 int n = r->ops->misc(r, DSARAND_SEEDSZ);
1137 PyObject *rc = bytestring_pywrap(0, n);
2135a6d3 1138 r->ops->misc(r, DSARAND_GETSEED, BIN_PTR(rc));
d7ab1bab 1139 return (rc);
1140}
1141
c90f712e 1142static const PyGetSetDef dsarand_pygetset[] = {
d7ab1bab 1143#define GETSETNAME(op, name) dr##op##_##name
1144 GET (seed, "R.seed -> current generator seed")
1145#undef GETSETNAME
1146 { 0 }
1147};
1148
c263b05c 1149static const PyTypeObject dsarand_pytype_skel = {
591bf41b 1150 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 1151 "DSARand", /* @tp_name@ */
d7ab1bab 1152 sizeof(grand_pyobj), /* @tp_basicsize@ */
1153 0, /* @tp_itemsize@ */
1154
1155 grand_pydealloc, /* @tp_dealloc@ */
1156 0, /* @tp_print@ */
1157 0, /* @tp_getattr@ */
1158 0, /* @tp_setattr@ */
1159 0, /* @tp_compare@ */
1160 0, /* @tp_repr@ */
1161 0, /* @tp_as_number@ */
1162 0, /* @tp_as_sequence@ */
1163 0, /* @tp_as_mapping@ */
1164 0, /* @tp_hash@ */
1165 0, /* @tp_call@ */
1166 0, /* @tp_str@ */
1167 0, /* @tp_getattro@ */
1168 0, /* @tp_setattro@ */
1169 0, /* @tp_as_buffer@ */
1170 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1171 Py_TPFLAGS_BASETYPE,
1172
1173 /* @tp_doc@ */
d96c882e 1174 "DSARand(SEED): pseudorandom number generator for DSA parameters.",
d7ab1bab 1175
1176 0, /* @tp_traverse@ */
1177 0, /* @tp_clear@ */
1178 0, /* @tp_richcompare@ */
1179 0, /* @tp_weaklistoffset@ */
1180 0, /* @tp_iter@ */
963a6148 1181 0, /* @tp_iternext@ */
d7ab1bab 1182 0, /* @tp_methods@ */
1183 0, /* @tp_members@ */
c90f712e 1184 PYGETSET(dsarand), /* @tp_getset@ */
d7ab1bab 1185 0, /* @tp_base@ */
1186 0, /* @tp_dict@ */
1187 0, /* @tp_descr_get@ */
1188 0, /* @tp_descr_set@ */
1189 0, /* @tp_dictoffset@ */
1190 0, /* @tp_init@ */
1191 PyType_GenericAlloc, /* @tp_alloc@ */
1192 dsarand_pynew, /* @tp_new@ */
3aa33042 1193 0, /* @tp_free@ */
d7ab1bab 1194 0 /* @tp_is_gc@ */
1195};
1196
1197/*----- Blum-Blum-Shub generator ------------------------------------------*/
1198
1199static PyObject *bbs_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1200{
1201 mp *n = 0, *x = MP_TWO;
1202 PyObject *rc = 0;
827f89d7 1203 static const char *const kwlist[] = { "n", "x", 0 };
d7ab1bab 1204
827f89d7 1205 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&:new", KWLIST,
d7ab1bab 1206 convmp, &n, convmp, &x))
1207 goto end;
1208 rc = grand_dopywrap(ty, bbs_rand(n, x), f_freeme);
1209end:
1210 mp_drop(n);
1211 mp_drop(x);
1212 return (rc);
1213}
1214
91e56f06
MW		 1215static PyObject *bbsmeth_step(PyObject *me)
1216 { grand *r = GRAND_R(me); r->ops->misc(r, BBS_STEP); RETURN_ME; }
d7ab1bab 1217
1218static PyObject *bbsmeth_bits(PyObject *me, PyObject *arg)
1219{
1220 grand *r = GRAND_R(me); unsigned n; uint32 w;
1221 if (!PyArg_ParseTuple(arg, "O&:bits", convuint, &n)) goto end;
1222 if (n > 32) VALERR("can't get more than 32 bits");
fbca05a1 1223 r->ops->misc(r, BBS_BITS, n, &w); return (getulong(w));
d7ab1bab 1224end:
1225 return (0);
1226}
1227
91e56f06
MW		 1228static PyObject *bbsmeth_wrap(PyObject *me)
1229 { grand *r = GRAND_R(me); r->ops->misc(r, BBS_WRAP); RETURN_ME; }
d7ab1bab 1230
1231static PyObject *bbsget_n(PyObject *me, void *hunoz)
1232{
1233 mp *x = MP_NEW; grand *r = GRAND_R(me);
1234 r->ops->misc(r, BBS_MOD, &x); return (mp_pywrap(x));
1235}
1236
1237static PyObject *bbsget_x(PyObject *me, void *hunoz)
1238{
1239 mp *x = MP_NEW; grand *r = GRAND_R(me);
1240 r->ops->misc(r, BBS_STATE, &x); return (mp_pywrap(x));
1241}
1242
1243static int bbsset_x(PyObject *me, PyObject *val, void *hunoz)
1244{
03e1fedf 1245 mp *x = 0; grand *r = GRAND_R(me); int rc = -1; if (!val) NIERR("__del__");
6a080b28
MW		 1246 if ((x = getmp(val)) == 0) goto end;
1247 r->ops->misc(r, BBS_SET, x); rc = 0;
d7ab1bab 1248 end: mp_drop(x); return (rc);
1249}
1250
1251static PyObject *bbsget_stepsz(PyObject *me, void *hunoz)
1252{
1253 grand *r = GRAND_R(me);
1254 return (PyInt_FromLong(r->ops->misc(r, BBS_STEPSZ)));
1255}
1256
c90f712e 1257static const PyMethodDef bbs_pymethods[] = {
d7ab1bab 1258#define METHNAME(name) bbsmeth_##name
91e56f06 1259 NAMETH(step, "R.step(): steps the generator (not useful)")
d96c882e 1260 METH (bits, "R.bits(N) -> W: returns N bits (<= 32) from the generator")
91e56f06 1261 NAMETH(wrap, "R.wrap(): flushes unused bits in internal buffer")
d7ab1bab 1262#undef METHNAME
1263 { 0 }
1264};
1265
c90f712e 1266static const PyGetSetDef bbs_pygetset[] = {
d7ab1bab 1267#define GETSETNAME(op, name) bbs##op##_##name
1268 GET (n, "R.n -> Blum modulus")
1269 GETSET(x, "R.x -> current seed value")
1270 GET (stepsz, "R.stepsz -> number of bits generated per step")
1271#undef GETSETNAME
1272 { 0 }
1273};
1274
c263b05c 1275static const PyTypeObject bbs_pytype_skel = {
591bf41b 1276 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 1277 "BlumBlumShub", /* @tp_name@ */
d7ab1bab 1278 sizeof(grand_pyobj), /* @tp_basicsize@ */
1279 0, /* @tp_itemsize@ */
1280
1281 grand_pydealloc, /* @tp_dealloc@ */
1282 0, /* @tp_print@ */
1283 0, /* @tp_getattr@ */
1284 0, /* @tp_setattr@ */
1285 0, /* @tp_compare@ */
1286 0, /* @tp_repr@ */
1287 0, /* @tp_as_number@ */
1288 0, /* @tp_as_sequence@ */
1289 0, /* @tp_as_mapping@ */
1290 0, /* @tp_hash@ */
1291 0, /* @tp_call@ */
1292 0, /* @tp_str@ */
1293 0, /* @tp_getattro@ */
1294 0, /* @tp_setattro@ */
1295 0, /* @tp_as_buffer@ */
1296 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1297 Py_TPFLAGS_BASETYPE,
1298
1299 /* @tp_doc@ */
d96c882e 1300 "BlumBlumShub(N, [x = 2]): Blum-Blum-Shub pseudorandom number generator.",
d7ab1bab 1301
1302 0, /* @tp_traverse@ */
1303 0, /* @tp_clear@ */
1304 0, /* @tp_richcompare@ */
1305 0, /* @tp_weaklistoffset@ */
1306 0, /* @tp_iter@ */
963a6148 1307 0, /* @tp_iternext@ */
c90f712e 1308 PYMETHODS(bbs), /* @tp_methods@ */
d7ab1bab 1309 0, /* @tp_members@ */
c90f712e 1310 PYGETSET(bbs), /* @tp_getset@ */
d7ab1bab 1311 0, /* @tp_base@ */
1312 0, /* @tp_dict@ */
1313 0, /* @tp_descr_get@ */
1314 0, /* @tp_descr_set@ */
1315 0, /* @tp_dictoffset@ */
1316 0, /* @tp_init@ */
1317 PyType_GenericAlloc, /* @tp_alloc@ */
1318 bbs_pynew, /* @tp_new@ */
3aa33042 1319 0, /* @tp_free@ */
d7ab1bab 1320 0 /* @tp_is_gc@ */
1321};
1322
1323typedef struct bbspriv_pyobj {
1324 grand_pyobj gr;
1325 bbs_priv bp;
1326} bbspriv_pyobj;
1327
1328#define BBSPRIV_BP(o) (&((bbspriv_pyobj *)(o))->bp)
1329
1330static PyObject *bbspriv_pynew(PyTypeObject *ty,
1331 PyObject *arg, PyObject *kw)
1332{
1333 mp *p = 0, *q = 0, *n = 0, *x = MP_TWO;
1334 bbspriv_pyobj *rc = 0;
827f89d7 1335 static const char *const kwlist[] = { "n", "p", "q", "seed", 0 };
d7ab1bab 1336
827f89d7 1337 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&:new", KWLIST,
d7ab1bab 1338 convmp, &n, convmp, &p, convmp, &q,
1339 convmp, &x))
1340 goto end;
1341 if (!n + !p + !q > 1) VALERR("must specify at least two of n, p, q");
1342 if (!n) n = mp_mul(MP_NEW, p, q);
1343 else if (!p) mp_div(&p, 0, n, q);
1344 else if (!q) mp_div(&q, 0, n, p);
1345 rc = (bbspriv_pyobj *)ty->tp_alloc(ty, 0);
1346 rc->gr.r = bbs_rand(n, x);
1347 rc->gr.f = f_freeme;
1348 rc->bp.p = MP_COPY(p);
1349 rc->bp.q = MP_COPY(q);
1350 rc->bp.n = MP_COPY(n);
1351end:
1352 mp_drop(p); mp_drop(q); mp_drop(n); mp_drop(x);
1353 return ((PyObject *)rc);
1354}
1355
a157093f 1356static PyObject *bpmeth_generate(PyObject *me, PyObject *arg, PyObject *kw)
d7ab1bab 1357{
1358 bbs_priv bp = { 0 };
1359 mp *x = MP_TWO;
930d78e3
MW		 1360 struct excinfo exc = EXCINFO_INIT;
1361 pypgev evt = { { 0 } };
d7ab1bab 1362 unsigned nbits, n = 0;
1363 grand *r = &rand_global;
827f89d7 1364 static const char *const kwlist[] =
a157093f 1365 { "nbits", "event", "rng", "nsteps", "seed", 0 };
d7ab1bab 1366 bbspriv_pyobj *rc = 0;
1367
930d78e3 1368 evt.exc = &exc;
a157093f
MW		 1369 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&O&O&O&:generate", KWLIST,
1370 convuint, &nbits, convpgev, &evt,
d7ab1bab 1371 convgrand, &r, convuint, &n, convmp, &x))
1372 goto end;
930d78e3
MW		 1373 if (bbs_gen(&bp, nbits, r, n, evt.ev.proc, evt.ev.ctx))
1374 PGENERR(&exc);
d7ab1bab 1375 rc = PyObject_New(bbspriv_pyobj, bbspriv_pytype);
1376 rc->gr.r = bbs_rand(bp.n, x);
1377 rc->gr.f = f_freeme;
1378 rc->bp.p = MP_COPY(bp.p);
1379 rc->bp.q = MP_COPY(bp.q);
1380 rc->bp.n = MP_COPY(bp.n);
1381end:
1382 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); mp_drop(x);
b2687a0a 1383 return ((PyObject *)rc);
d7ab1bab 1384}
1385
1386static void bbspriv_pydealloc(PyObject *me)
1387{
1388 bbs_priv *bp = BBSPRIV_BP(me);
1389 mp_drop(bp->n);
1390 mp_drop(bp->p);
1391 mp_drop(bp->q);
1392 grand_pydealloc(me);
1393}
1394
1395static PyObject *bpmeth_ff(PyObject *me, PyObject *arg)
1396{
1397 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1398 if (!PyArg_ParseTuple(arg, "O&:ff", convmp, &n)) return (0);
1399 r->ops->misc(r, BBS_FF, bp, n); RETURN_ME;
1400}
1401
1402static PyObject *bpmeth_rew(PyObject *me, PyObject *arg)
1403{
1404 mp *n = 0; grand *r = GRAND_R(me); bbs_priv *bp = BBSPRIV_BP(me);
1405 if (!PyArg_ParseTuple(arg, "O&:rew", convmp, &n)) return (0);
1406 r->ops->misc(r, BBS_REW, bp, n); RETURN_ME;
1407}
1408
1409static PyObject *bpget_n(PyObject *me, void *hunoz)
1410 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->n))); }
1411
1412static PyObject *bpget_p(PyObject *me, void *hunoz)
1413 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->p))); }
1414
1415static PyObject *bpget_q(PyObject *me, void *hunoz)
1416 { return (mp_pywrap(MP_COPY(BBSPRIV_BP(me)->q))); }
1417
c90f712e 1418static const PyMethodDef bbspriv_pymethods[] = {
d7ab1bab 1419#define METHNAME(name) bpmeth_##name
d96c882e
MW		 1420 METH (ff, "R.ff(N): fast-forward N places")
1421 METH (rew, "R.rew(N): rewind N places")
a157093f
MW		 1422 KWSMTH(generate, "generate(NBITS, [event = pgen_nullev], "
1423 "[rng = rand], [nsteps = 0], [seed = 2]) -> R")
d7ab1bab 1424#undef METHNAME
1425 { 0 }
1426};
1427
c90f712e 1428static const PyGetSetDef bbspriv_pygetset[] = {
d7ab1bab 1429#define GETSETNAME(op, name) bp##op##_##name
b2687a0a
MW		 1430 GET (n, "R.n -> Blum modulus")
1431 GET (p, "R.p -> one of the factors of the modulus")
1432 GET (q, "R.q -> one of the factors of the modulus")
d7ab1bab 1433#undef GETSETNAME
1434 { 0 }
1435};
1436
c263b05c 1437static const PyTypeObject bbspriv_pytype_skel = {
591bf41b 1438 PyVarObject_HEAD_INIT(0, 0) /* Header */
c461c9b3 1439 "BBSPriv", /* @tp_name@ */
d7ab1bab 1440 sizeof(bbspriv_pyobj), /* @tp_basicsize@ */
1441 0, /* @tp_itemsize@ */
1442
1443 bbspriv_pydealloc, /* @tp_dealloc@ */
1444 0, /* @tp_print@ */
1445 0, /* @tp_getattr@ */
1446 0, /* @tp_setattr@ */
1447 0, /* @tp_compare@ */
1448 0, /* @tp_repr@ */
1449 0, /* @tp_as_number@ */
1450 0, /* @tp_as_sequence@ */
1451 0, /* @tp_as_mapping@ */
1452 0, /* @tp_hash@ */
1453 0, /* @tp_call@ */
1454 0, /* @tp_str@ */
1455 0, /* @tp_getattro@ */
1456 0, /* @tp_setattro@ */
1457 0, /* @tp_as_buffer@ */
1458 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1459 Py_TPFLAGS_BASETYPE,
1460
1461 /* @tp_doc@ */
d96c882e
MW		 1462 "BBSPriv(..., [seed = 2]): Blum-Blum-Shub, with private key.\n"
1463 " Keywords: n, p, q; must provide at least two",
d7ab1bab 1464
1465 0, /* @tp_traverse@ */
1466 0, /* @tp_clear@ */
1467 0, /* @tp_richcompare@ */
1468 0, /* @tp_weaklistoffset@ */
1469 0, /* @tp_iter@ */
963a6148 1470 0, /* @tp_iternext@ */
c90f712e 1471 PYMETHODS(bbspriv), /* @tp_methods@ */
d7ab1bab 1472 0, /* @tp_members@ */
c90f712e 1473 PYGETSET(bbspriv), /* @tp_getset@ */
d7ab1bab 1474 0, /* @tp_base@ */
1475 0, /* @tp_dict@ */
1476 0, /* @tp_descr_get@ */
1477 0, /* @tp_descr_set@ */
1478 0, /* @tp_dictoffset@ */
1479 0, /* @tp_init@ */
1480 PyType_GenericAlloc, /* @tp_alloc@ */
1481 bbspriv_pynew, /* @tp_new@ */
3aa33042 1482 0, /* @tp_free@ */
d7ab1bab 1483 0 /* @tp_is_gc@ */
1484};
1485
1486/*----- Global stuff ------------------------------------------------------*/
1487
810542b0
MW		 1488static const struct nameval consts[] = {
1489 CONST(RAND_IBITS),
1490 { 0 }
1491};
1492
d7ab1bab 1493void rand_pyinit(void)
1494{
1495 INITTYPE(grand, root);
1496 INITTYPE(truerand, grand);
1497 INITTYPE(fibrand, grand);
1498 INITTYPE(lcrand, grand);
1499 INITTYPE(dsarand, grand);
1500 INITTYPE(bbs, grand);
1501 INITTYPE(bbspriv, bbs);
1502 INITTYPE(sslprf, grand);
1503 INITTYPE(tlsdx, grand);
1504 INITTYPE(tlsprf, grand);
850a4b48
MW		 1505 INITTYPE(gccrand, type);
1506 INITTYPE(gcrand, grand);
35e5469a 1507 INITTYPE(gclatinrand, gcrand);
d7ab1bab 1508 rand_noisesrc(RAND_GLOBAL, &noise_source);
1509 rand_seed(RAND_GLOBAL, 160);
d7ab1bab 1510}
1511
a539ffb8
MW		 1512static const char *crand_namefn(const void *p)
1513 { const gccrand_info *const *cls = p; return (*cls ? (*cls)->name : 0); }
1514static PyObject *crand_valfn(const void *p)
1515 { const gccrand_info *const *cls = p; return (gccrand_pywrap(*cls)); }
850a4b48 1516
d7ab1bab 1517void rand_pyinsert(PyObject *mod)
1518{
1519 INSERT("GRand", grand_pytype);
1520 INSERT("TrueRand", truerand_pytype);
1521 INSERT("LCRand", lcrand_pytype);
1522 INSERT("FibRand", fibrand_pytype);
1523 INSERT("SSLRand", sslprf_pytype);
1524 INSERT("TLSDataExpansion", tlsdx_pytype);
1525 INSERT("TLSPRF", tlsprf_pytype);
1526 INSERT("DSARand", dsarand_pytype);
1527 INSERT("BlumBlumShub", bbs_pytype);
1528 INSERT("BBSPriv", bbspriv_pytype);
850a4b48
MW		 1529 INSERT("GCCRand", gccrand_pytype);
1530 INSERT("GCRand", gcrand_pytype);
35e5469a 1531 INSERT("GCLatinRand", gclatinrand_pytype);
d7ab1bab 1532 rand_pyobj = grand_pywrap(&rand_global, 0); Py_INCREF(rand_pyobj);
a539ffb8
MW		 1533 gccrands_dict = make_algtab(gcrandtab, sizeof(gccrand_info *),
1534 crand_namefn, crand_valfn);
1535 INSERT("gccrands", gccrands_dict); Py_INCREF(gccrands_dict);
d7ab1bab 1536 INSERT("rand", rand_pyobj);
810542b0 1537 setconstants(mod, consts);
d7ab1bab 1538}
1539
1540/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings