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*.c: Publish algorithm and crypto-group tables as `mapping' objects.
[catacomb-python] / group.c
1 /* -*-c-*-
2 *
3 * Abstract group inteface
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
31 /*----- DH and binary group infos -----------------------------------------*/
32
33 static PyTypeObject *fginfo_pytype, *dhinfo_pytype, *bindhinfo_pytype;
34
35 typedef struct fginfo_pyobj {
36 PyObject_HEAD
37 gprime_param dp;
38 } fginfo_pyobj;
39
40 #define FGINFO_DP(fg) (&((fginfo_pyobj *)(fg))->dp)
41
42 static PyObject *fginfo_pywrap(gprime_param *dp, PyTypeObject *ty)
43 {
44 fginfo_pyobj *z = PyObject_New(fginfo_pyobj, ty);
45 z->dp = *dp;
46 return ((PyObject *)z);
47 }
48
49 static PyObject *fginfo_pynew(PyTypeObject *ty,
50 PyObject *arg, PyObject *kw)
51 {
52 static const char *const kwlist[] = { "p", "r", "g", 0 };
53 gprime_param dp = { 0 };
54 fginfo_pyobj *z = 0;
55
56 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&O&:new", KWLIST,
57 convmp, &dp.p,
58 convmp, &dp.q,
59 convmp, &dp.g))
60 goto end;
61 z = PyObject_New(fginfo_pyobj, ty);
62 z->dp = dp;
63 return ((PyObject *)z);
64 end:
65 mp_drop(dp.p);
66 mp_drop(dp.q);
67 mp_drop(dp.g);
68 return (0);
69 }
70
71 static PyObject *figet_r(PyObject *me, void *hunoz)
72 { return mp_pywrap(MP_COPY(FGINFO_DP(me)->q)); }
73
74 static PyObject *diget_p(PyObject *me, void *hunoz)
75 { return mp_pywrap(MP_COPY(FGINFO_DP(me)->p)); }
76
77 static PyObject *diget_g(PyObject *me, void *hunoz)
78 { return mp_pywrap(MP_COPY(FGINFO_DP(me)->g)); }
79
80 static PyObject *biget_p(PyObject *me, void *hunoz)
81 { return gf_pywrap(MP_COPY(FGINFO_DP(me)->p)); }
82
83 static PyObject *biget_m(PyObject *me, void *hunoz)
84 { return PyInt_FromLong(mp_octets(FGINFO_DP(me)->p) - 1); }
85
86 static PyObject *biget_g(PyObject *me, void *hunoz)
87 { return gf_pywrap(MP_COPY(FGINFO_DP(me)->g)); }
88
89 static void fginfo_pydealloc(PyObject *me)
90 {
91 mp_drop(FGINFO_DP(me)->p);
92 mp_drop(FGINFO_DP(me)->q);
93 mp_drop(FGINFO_DP(me)->g);
94 FREEOBJ(me);
95 }
96
97 static PyObject *dimeth_generate(PyObject *me, PyObject *arg, PyObject *kw)
98 {
99 dh_param dp;
100 unsigned ql = 0, pl;
101 unsigned steps = 0;
102 grand *r = &rand_global;
103 struct excinfo exc = EXCINFO_INIT;
104 pypgev evt = { { 0 } };
105 static const char *const kwlist[] =
106 { "pbits", "qbits", "event", "rng", "nsteps", 0 };
107 PyObject *rc = 0;
108
109 evt.exc = &exc;
110 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O&O&O&O&:generate", KWLIST,
111 convuint, &pl, convuint, &ql,
112 convpgev, &evt, convgrand, &r,
113 convuint, &steps))
114 goto end;
115 if (dh_gen(&dp, ql, pl, steps, r, evt.ev.proc, evt.ev.ctx))
116 PGENERR(&exc);
117 rc = fginfo_pywrap(&dp, dhinfo_pytype);
118 end:
119 droppgev(&evt);
120 return (rc);
121 }
122
123 static PyObject *dimeth_genlimlee(PyObject *me, PyObject *arg, PyObject *kw)
124 {
125 dh_param dp;
126 unsigned ql, pl;
127 unsigned steps = 0;
128 grand *r = &rand_global;
129 struct excinfo exc = EXCINFO_INIT;
130 pypgev oe = { { 0 } }, ie = { { 0 } };
131 int subgroupp = 1;
132 unsigned f = 0;
133 static const char *const kwlist[] = {
134 "pbits", "qbits", "event", "ievent",
135 "rng", "nsteps", "subgroupp", 0
136 };
137 size_t i, nf;
138 mp **v = 0;
139 PyObject *rc = 0, *vec = 0;
140
141 oe.exc = ie.exc = &exc;
142 if (!PyArg_ParseTupleAndKeywords(arg, kw,
143 "O&O&|O&O&O&O&O&:genlimlee", KWLIST,
144 convuint, &pl, convuint, &ql,
145 convpgev, &oe, convpgev, &ie,
146 convgrand, &r, convuint, &steps,
147 convbool, &subgroupp))
148 goto end;
149 if (subgroupp) f |= DH_SUBGROUP;
150 if (dh_limlee(&dp, ql, pl, f, steps, r,
151 oe.ev.proc, oe.ev.ctx, ie.ev.proc, ie.ev.ctx, &nf, &v))
152 PGENERR(&exc);
153 vec = PyList_New(nf);
154 for (i = 0; i < nf; i++)
155 PyList_SET_ITEM(vec, i, mp_pywrap(v[i]));
156 xfree(v);
157 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype), vec);
158 end:
159 droppgev(&oe); droppgev(&ie);
160 return (rc);
161 }
162
163 static PyObject *dimeth_genkcdsa(PyObject *me, PyObject *arg, PyObject *kw)
164 {
165 dh_param dp;
166 unsigned ql, pl;
167 unsigned steps = 0;
168 grand *r = &rand_global;
169 struct excinfo exc = EXCINFO_INIT;
170 pypgev evt = { { 0 } };
171 static const char *const kwlist[] =
172 { "pbits", "qbits", "event", "rng", "nsteps", 0 };
173 mp *v = MP_NEW;
174 PyObject *rc = 0;
175
176 evt.exc = &exc;
177 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&O&:genkcdsa", KWLIST,
178 convuint, &pl, convuint, &ql,
179 convpgev, &evt, convgrand, &r,
180 convuint, &steps))
181 goto end;
182 if (dh_kcdsagen(&dp, ql, pl, 0, steps, r, evt.ev.proc, evt.ev.ctx))
183 PGENERR(&exc);
184 mp_div(&v, 0, dp.p, dp.q);
185 v = mp_lsr(v, v, 1);
186 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype),
187 mp_pywrap(v));
188 end:
189 droppgev(&evt);
190 return (rc);
191 }
192
193 static PyObject *dimeth_gendsa(PyObject *me, PyObject *arg, PyObject *kw)
194 {
195 dsa_param dp;
196 unsigned ql, pl;
197 unsigned steps = 0;
198 dsa_seed ds;
199 char *k;
200 Py_ssize_t ksz;
201 struct excinfo exc = EXCINFO_INIT;
202 pypgev evt = { { 0 } };
203 static const char *const kwlist[] =
204 { "pbits", "qbits", "seed", "event", "nsteps", 0 };
205 PyObject *rc = 0;
206
207 evt.exc = &exc;
208 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&s#|O&O&:gendsa", KWLIST,
209 convuint, &pl, convuint, &ql,
210 &k, &ksz, convpgev, &evt,
211 convuint, &steps))
212 goto end;
213 if (dsa_gen(&dp, ql, pl, steps, k, ksz, &ds, evt.ev.proc, evt.ev.ctx))
214 PGENERR(&exc);
215 rc = Py_BuildValue("(NNl)", fginfo_pywrap(&dp, dhinfo_pytype),
216 bytestring_pywrap(ds.p, ds.sz), (long)ds.count);
217 xfree(ds.p);
218 end:
219 droppgev(&evt);
220 return (rc);
221 }
222
223 static PyObject *meth__parse(PyObject *me, PyObject *arg, PyTypeObject *ty,
224 int (*parse)(qd_parse *, gprime_param *))
225 {
226 qd_parse qd;
227 char *p;
228 gprime_param gp;
229 PyObject *rc = 0;
230
231 if (!PyArg_ParseTuple(arg, "s:parse", &p)) goto end;
232 qd.p = p; qd.e = 0;
233 if (parse(&qd, &gp)) VALERR(qd.e);
234 rc = fginfo_pywrap(&gp, ty);
235 end:
236 return (rc);
237 }
238
239 static PyObject *dimeth_parse(PyObject *me, PyObject *arg)
240 { return (meth__parse(me, arg, dhinfo_pytype, dh_parse)); }
241
242 static PyObject *bimeth_parse(PyObject *me, PyObject *arg)
243 { return (meth__parse(me, arg, bindhinfo_pytype, dhbin_parse)); }
244
245 static const PyGetSetDef fginfo_pygetset[] = {
246 #define GETSETNAME(op, name) fi##op##_##name
247 GET (r, "I.r -> group order")
248 #undef GETSETNAME
249 { 0 }
250 };
251
252 static const PyGetSetDef dhinfo_pygetset[] = {
253 #define GETSETNAME(op, name) di##op##_##name
254 GET (p, "I.p -> prime")
255 GET (g, "I.g -> generator")
256 #undef GETSETNAME
257 { 0 }
258 };
259
260 static const PyMethodDef dhinfo_pymethods[] = {
261 #define METHNAME(name) dimeth_##name
262 SMTH (parse, "parse(STR) -> D, REST")
263 KWSMTH(generate,
264 "generate(PBITS, [qbits = 0], [event = pgen_nullev],\n"
265 " [rng = rand], [nsteps = 0]) -> D")
266 KWSMTH(genlimlee,
267 "genlimlee(PBITS, QBITS, [event = pgen_nullev], "
268 "[ievent = pgen_nullev],\n"
269 " [rng = rand], [nsteps = 0], [subgroupp = True]) "
270 "-> (D, [Q, ...])")
271 KWSMTH(gendsa,
272 "gendsa(PBITS, QBITS, SEED, [event = pgen_nullev], [nsteps = 0])\n"
273 " -> (D, SEED, COUNT)")
274 KWSMTH(genkcdsa,
275 "gendsa(PBITS, QBITS, [event = pgen_nullev], "
276 "[rng = rand], [nsteps = 0])\n"
277 " -> (D, V)")
278 #undef METHNAME
279 { 0 }
280 };
281
282 static const PyGetSetDef bindhinfo_pygetset[] = {
283 #define GETSETNAME(op, name) bi##op##_##name
284 GET (p, "I.p -> irreducible polynomial")
285 GET (m, "I.m -> degree of polynomial")
286 GET (g, "I.g -> generator")
287 #undef GETSETNAME
288 { 0 }
289 };
290
291 static const PyMethodDef bindhinfo_pymethods[] = {
292 #define METHNAME(name) bimeth_##name
293 SMTH (parse, "parse(STR) -> D, REST")
294 #undef METHNAME
295 { 0 }
296 };
297
298 static const PyTypeObject fginfo_pytype_skel = {
299 PyObject_HEAD_INIT(0) 0, /* Header */
300 "FGInfo", /* @tp_name@ */
301 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
302 0, /* @tp_itemsize@ */
303
304 fginfo_pydealloc, /* @tp_dealloc@ */
305 0, /* @tp_print@ */
306 0, /* @tp_getattr@ */
307 0, /* @tp_setattr@ */
308 0, /* @tp_compare@ */
309 0, /* @tp_repr@ */
310 0, /* @tp_as_number@ */
311 0, /* @tp_as_sequence@ */
312 0, /* @tp_as_mapping@ */
313 0, /* @tp_hash@ */
314 0, /* @tp_call@ */
315 0, /* @tp_str@ */
316 0, /* @tp_getattro@ */
317 0, /* @tp_setattro@ */
318 0, /* @tp_as_buffer@ */
319 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
320 Py_TPFLAGS_BASETYPE,
321
322 /* @tp_doc@ */
323 "Abstract base class for field-group information objects.",
324
325 0, /* @tp_traverse@ */
326 0, /* @tp_clear@ */
327 0, /* @tp_richcompare@ */
328 0, /* @tp_weaklistoffset@ */
329 0, /* @tp_iter@ */
330 0, /* @tp_iternext@ */
331 0, /* @tp_methods@ */
332 0, /* @tp_members@ */
333 PYGETSET(fginfo), /* @tp_getset@ */
334 0, /* @tp_base@ */
335 0, /* @tp_dict@ */
336 0, /* @tp_descr_get@ */
337 0, /* @tp_descr_set@ */
338 0, /* @tp_dictoffset@ */
339 0, /* @tp_init@ */
340 PyType_GenericAlloc, /* @tp_alloc@ */
341 abstract_pynew, /* @tp_new@ */
342 0, /* @tp_free@ */
343 0 /* @tp_is_gc@ */
344 };
345
346 static const PyTypeObject dhinfo_pytype_skel = {
347 PyObject_HEAD_INIT(0) 0, /* Header */
348 "DHInfo", /* @tp_name@ */
349 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
350 0, /* @tp_itemsize@ */
351
352 fginfo_pydealloc, /* @tp_dealloc@ */
353 0, /* @tp_print@ */
354 0, /* @tp_getattr@ */
355 0, /* @tp_setattr@ */
356 0, /* @tp_compare@ */
357 0, /* @tp_repr@ */
358 0, /* @tp_as_number@ */
359 0, /* @tp_as_sequence@ */
360 0, /* @tp_as_mapping@ */
361 0, /* @tp_hash@ */
362 0, /* @tp_call@ */
363 0, /* @tp_str@ */
364 0, /* @tp_getattro@ */
365 0, /* @tp_setattro@ */
366 0, /* @tp_as_buffer@ */
367 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
368 Py_TPFLAGS_BASETYPE,
369
370 /* @tp_doc@ */
371 "DHInfo(P, R, G): standard (integer) Diffie-Hellman group information.",
372
373 0, /* @tp_traverse@ */
374 0, /* @tp_clear@ */
375 0, /* @tp_richcompare@ */
376 0, /* @tp_weaklistoffset@ */
377 0, /* @tp_iter@ */
378 0, /* @tp_iternext@ */
379 PYMETHODS(dhinfo), /* @tp_methods@ */
380 0, /* @tp_members@ */
381 PYGETSET(dhinfo), /* @tp_getset@ */
382 0, /* @tp_base@ */
383 0, /* @tp_dict@ */
384 0, /* @tp_descr_get@ */
385 0, /* @tp_descr_set@ */
386 0, /* @tp_dictoffset@ */
387 0, /* @tp_init@ */
388 PyType_GenericAlloc, /* @tp_alloc@ */
389 fginfo_pynew, /* @tp_new@ */
390 0, /* @tp_free@ */
391 0 /* @tp_is_gc@ */
392 };
393
394 static const PyTypeObject bindhinfo_pytype_skel = {
395 PyObject_HEAD_INIT(0) 0, /* Header */
396 "BinDHInfo", /* @tp_name@ */
397 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
398 0, /* @tp_itemsize@ */
399
400 fginfo_pydealloc, /* @tp_dealloc@ */
401 0, /* @tp_print@ */
402 0, /* @tp_getattr@ */
403 0, /* @tp_setattr@ */
404 0, /* @tp_compare@ */
405 0, /* @tp_repr@ */
406 0, /* @tp_as_number@ */
407 0, /* @tp_as_sequence@ */
408 0, /* @tp_as_mapping@ */
409 0, /* @tp_hash@ */
410 0, /* @tp_call@ */
411 0, /* @tp_str@ */
412 0, /* @tp_getattro@ */
413 0, /* @tp_setattro@ */
414 0, /* @tp_as_buffer@ */
415 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
416 Py_TPFLAGS_BASETYPE,
417
418 /* @tp_doc@ */
419 "BinDHInfo(P, R, G): binary-field Diffie-Hellman group information.",
420
421 0, /* @tp_traverse@ */
422 0, /* @tp_clear@ */
423 0, /* @tp_richcompare@ */
424 0, /* @tp_weaklistoffset@ */
425 0, /* @tp_iter@ */
426 0, /* @tp_iternext@ */
427 PYMETHODS(bindhinfo), /* @tp_methods@ */
428 0, /* @tp_members@ */
429 PYGETSET(bindhinfo), /* @tp_getset@ */
430 0, /* @tp_base@ */
431 0, /* @tp_dict@ */
432 0, /* @tp_descr_get@ */
433 0, /* @tp_descr_set@ */
434 0, /* @tp_dictoffset@ */
435 0, /* @tp_init@ */
436 PyType_GenericAlloc, /* @tp_alloc@ */
437 fginfo_pynew, /* @tp_new@ */
438 0, /* @tp_free@ */
439 0 /* @tp_is_gc@ */
440 };
441
442 /*----- General utilities -------------------------------------------------*/
443
444 PyTypeObject *ge_pytype, *group_pytype;
445 static PyTypeObject *primegroup_pytype, *bingroup_pytype, *ecgroup_pytype;
446
447 group *group_copy(group *g)
448 {
449 if (STRCMP(G_NAME(g), ==, "prime")) {
450 gctx_prime *gc = (gctx_prime *)g;
451 gprime_param gp;
452 gp.g = G_TOINT(g, MP_NEW, g->g);
453 gp.p = gc->mm.m;
454 gp.q = gc->g.r;
455 g = group_prime(&gp);
456 MP_DROP(gp.g);
457 } else if (STRCMP(G_NAME(g), ==, "bin")) {
458 gctx_bin *gc = (gctx_bin *)g;
459 gbin_param gb;
460 gb.g = G_TOINT(g, MP_NEW, g->g);
461 gb.p = gc->r.p;
462 gb.q = gc->g.r;
463 g = group_binary(&gb);
464 MP_DROP(gb.g);
465 } else if (STRCMP(G_NAME(g), ==, "ec")) {
466 gctx_ec *gc = (gctx_ec *)g;
467 ec_info ei;
468 if ((ei.c = eccurve_copy(gc->ei.c)) == 0)
469 return (0);
470 EC_CREATE(&ei.g);
471 EC_COPY(&ei.g, &gc->ei.g);
472 ei.r = MP_COPY(gc->ei.r);
473 ei.h = MP_COPY(gc->ei.h);
474 g = group_ec(&ei);
475 } else
476 g = 0;
477 return (g);
478 }
479
480 PyObject *ge_pywrap(PyObject *gobj, ge *x)
481 {
482 ge_pyobj *z = PyObject_New(ge_pyobj, (PyTypeObject *)gobj);
483 z->x = x;
484 z->g = GROUP_G(gobj);
485 Py_INCREF(gobj);
486 return ((PyObject *)z);
487 }
488
489 static PyObject *ge_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
490 {
491 static const char *const kwlist[] = { "x", 0 };
492 PyObject *x;
493 group *g;
494 ec p = EC_INIT;
495 mp *y = 0;
496 ge *xx = 0;
497 mptext_stringctx sc;
498
499 g = GROUP_G(ty);
500 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O:new", KWLIST, &x)) goto end;
501 xx = G_CREATE(g);
502 if (ECPT_PYCHECK(x)) {
503 getecptout(&p, x);
504 if (G_FROMEC(g, xx, &p))
505 TYERR("can't convert from elliptic curve point");
506 EC_DESTROY(&p);
507 } else if ((y = tomp(x)) != 0) {
508 if (G_FROMINT(g, xx, y))
509 TYERR("can't convert from integer");
510 MP_DROP(y);
511 } else if (PyString_Check(x)) {
512 sc.buf = PyString_AS_STRING(x);
513 sc.lim = sc.buf + PyString_GET_SIZE(x);
514 if (G_READ(g, xx, &mptext_stringops, &sc) || sc.buf < sc.lim)
515 VALERR("malformed group element string");
516 } else
517 TYERR("can't convert to group element");
518 return (ge_pywrap((PyObject *)ty, xx));
519 end:
520 mp_drop(y);
521 EC_DESTROY(&p);
522 if (xx) G_DESTROY(g, xx);
523 return (0);
524 }
525
526 static PyObject *group_dopywrap(PyTypeObject *ty, group *g)
527 {
528 group_pyobj *gobj = newtype(ty, 0, g->ops->name);
529 gobj->g = g;
530 gobj->ty.ht_type.tp_basicsize = sizeof(ge_pyobj);
531 gobj->ty.ht_type.tp_base = ge_pytype;
532 Py_INCREF(group_pytype);
533 gobj->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
534 Py_TPFLAGS_BASETYPE |
535 Py_TPFLAGS_CHECKTYPES |
536 Py_TPFLAGS_HEAPTYPE);
537 gobj->ty.ht_type.tp_alloc = PyType_GenericAlloc;
538 gobj->ty.ht_type.tp_free = 0;
539 gobj->ty.ht_type.tp_new = ge_pynew;
540 typeready(&gobj->ty.ht_type);
541 return ((PyObject *)gobj);
542 }
543
544 PyObject *group_pywrap(group *g)
545 {
546 PyTypeObject *ty;
547
548 if (STRCMP(G_NAME(g), ==, "prime")) ty = primegroup_pytype;
549 else if (STRCMP(G_NAME(g), ==, "bin")) ty = bingroup_pytype;
550 else if (STRCMP(G_NAME(g), ==, "ec")) ty = ecgroup_pytype;
551 else abort();
552 return (group_dopywrap(ty, g));
553 }
554
555 /*----- Group elements ----------------------------------------------------*/
556
557 #define BINOP(name) \
558 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
559 { \
560 ge *z; \
561 group *g; \
562 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
563 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
564 RETURN_NOTIMPL; \
565 g = GE_G(x); \
566 z = G_CREATE(g); \
567 g->ops->name(g, z, GE_X(x), GE_X(y)); \
568 return (ge_pywrap(GE_GOBJ(x), z)); \
569 }
570 BINOP(mul)
571 BINOP(div)
572 #undef BINOP
573
574 #define UNOP(name) \
575 static PyObject *gemeth_##name(PyObject *me) \
576 { \
577 group *g; \
578 ge *z; \
579 g = GE_G(me); \
580 z = G_CREATE(g); \
581 g->ops->name(g, z, GE_X(me)); \
582 return (ge_pywrap(GE_GOBJ(me), z)); \
583 }
584 UNOP(sqr)
585 UNOP(inv)
586 #undef UNOP
587
588 static PyObject *ge_pyexp(PyObject *x, PyObject *n, PyObject *m)
589 {
590 mp *nn;
591 ge *z;
592
593 if (m != Py_None || !GE_PYCHECK(x) || (nn = getmp(n)) == 0)
594 RETURN_NOTIMPL;
595 z = G_CREATE(GE_G(x));
596 G_EXP(GE_G(x), z, GE_X(x), nn);
597 MP_DROP(nn);
598 return (ge_pywrap(GE_GOBJ(x), z));
599 }
600
601 static void ge_pydealloc(PyObject *me)
602 {
603 G_DESTROY(GE_G(me), GE_X(me));
604 Py_DECREF(GE_GOBJ(me));
605 FREEOBJ(me);
606 }
607
608 static void group_pydealloc(PyObject *me)
609 {
610 G_DESTROYGROUP(GROUP_G(me));
611 PyType_Type.tp_dealloc(me);
612 }
613
614 static PyObject *gmexp_id(PyObject *me)
615 {
616 group *g = GROUP_G(me); ge *x = G_CREATE(g);
617 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
618 }
619
620 static int gmexp_fill(void *pp, PyObject *me, PyObject *x, PyObject *m)
621 {
622 group_expfactor *f = pp;
623
624 if (!GE_PYCHECK(x) || GE_G(x) != GROUP_G(me) || (f->exp = getmp(m)) == 0)
625 return (-1);
626 f->base = GE_X(x);
627 return (0);
628 }
629
630 static PyObject *ge_pyrichcompare(PyObject *x, PyObject *y, int op)
631 {
632 int b;
633 PyObject *rc = 0;
634
635 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) ||
636 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y))))
637 RETURN_NOTIMPL;
638 switch (op) {
639 case Py_EQ: b = G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
640 case Py_NE: b = !G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
641 default: TYERR("group elements are unordered");
642 }
643 rc = getbool(b);
644 end:
645 return (rc);
646 }
647
648 static PyObject *gemeth_check(PyObject *me)
649 {
650 if (group_check(GE_G(me), GE_X(me))) VALERR("bad group element");
651 RETURN_OBJ(me);
652 end:
653 return (0);
654 }
655
656 static int ge_pynonzerop(PyObject *x)
657 { return (!G_IDENTP(GE_G(x), GE_X(x))); }
658
659 static PyObject *ge_pystr(PyObject *me)
660 {
661 dstr d = DSTR_INIT;
662 PyObject *rc;
663
664 group_writedstr(GE_G(me), GE_X(me), &d);
665 rc = PyString_FromStringAndSize(d.buf, d.len);
666 DDESTROY(&d);
667 return (rc);
668 }
669
670 static PyObject *ge_pylong(PyObject *me)
671 {
672 mp *x = 0;
673 PyObject *rc = 0;
674
675 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
676 TYERR("can't convert to integer");
677 rc = mp_topylong(x);
678 end:
679 mp_drop(x);
680 return (rc);
681 }
682
683 static PyObject *ge_pyint(PyObject *me)
684 {
685 mp *x = 0;
686 PyObject *rc = 0;
687 long l;
688
689 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
690 TYERR("can't convert to integer");
691 if (!mp_tolong_checked(x, &l, 0)) rc = PyInt_FromLong(l);
692 else rc = mp_topylong(x);
693 end:
694 mp_drop(x);
695 return (rc);
696 }
697
698 static PyObject *gemeth_toint(PyObject *me)
699 {
700 mp *x;
701
702 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
703 TYERR("can't convert to integer");
704 return (mp_pywrap(x));
705 end:
706 return (0);
707 }
708
709 static PyObject *gemeth_toec(PyObject *me, PyObject *arg, PyObject *kw)
710 {
711 static const char *const kwlist[] = { "curve", 0 };
712 PyTypeObject *cty = 0;
713 PyObject *rc = 0;
714 group *g;
715 ec_curve *c;
716 ec p = EC_INIT;
717
718 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O:toec", KWLIST,
719 &cty)) goto end;
720 g = GROUP_G(GE_GOBJ(me));
721 if (cty) {
722 if (!PyType_Check(cty) || !PyType_IsSubtype(cty, ecpt_pytype))
723 TYERR("want subtype of catacomb.ECPt");
724 Py_INCREF((PyObject *)cty);
725 } else if (STRCMP(G_NAME(g), ==, "ec")) {
726 c = eccurve_copy(((gctx_ec *)g)->ei.c);
727 cty = (PyTypeObject *)eccurve_pywrap(0, c);
728 } else {
729 cty = ecpt_pytype;
730 Py_INCREF((PyObject *)cty);
731 }
732 if (G_TOEC(GE_G(me), &p, GE_X(me))) {
733 Py_DECREF((PyObject *)cty);
734 TYERR("can't convert to ec point");
735 }
736 rc = ecpt_pywrapout(cty, &p);
737 Py_DECREF((PyObject *)cty);
738 end:
739 return (rc);
740 }
741
742 static PyObject *gemeth_tobuf(PyObject *me)
743 {
744 buf b;
745 PyObject *rc;
746 size_t n;
747
748 n = GE_G(me)->noctets + 4;
749 rc = bytestring_pywrap(0, n);
750 buf_init(&b, PyString_AS_STRING(rc), n);
751 G_TOBUF(GE_G(me), &b, GE_X(me));
752 assert(BOK(&b));
753 _PyString_Resize(&rc, BLEN(&b));
754 return (rc);
755 }
756
757 static PyObject *gemeth_toraw(PyObject *me)
758 {
759 buf b;
760 PyObject *rc;
761 size_t n;
762
763 n = GE_G(me)->noctets;
764 rc = bytestring_pywrap(0, n);
765 buf_init(&b, PyString_AS_STRING(rc), n);
766 G_TORAW(GE_G(me), &b, GE_X(me));
767 assert(BOK(&b));
768 _PyString_Resize(&rc, BLEN(&b));
769 return (rc);
770 }
771
772 static PyObject *gmexp_exp(PyObject *me, void *pp, int n)
773 {
774 ge *z = G_CREATE(GROUP_G(me));
775 G_MEXP(GROUP_G(me), z, pp, n);
776 return (ge_pywrap(me, z));
777 }
778
779 static void gmexp_drop(void *pp)
780 {
781 group_expfactor *f = pp;
782 MP_DROP(f->exp);
783 }
784
785 static PyObject *gmeth_mexp(PyObject *me, PyObject *arg)
786 {
787 return (mexp_common(me, arg, sizeof(group_expfactor),
788 gmexp_id, gmexp_fill, gmexp_exp, gmexp_drop));
789 }
790
791 static PyObject *gmeth_checkgroup(PyObject *me, PyObject *arg, PyObject *kw)
792 {
793 static const char *const kwlist[] = { "rng", 0 };
794 grand *r = &rand_global;
795 const char *p;
796
797 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:checkgroup", KWLIST,
798 convgrand, &r))
799 goto end;
800 if ((p = G_CHECK(GROUP_G(me), r)) != 0)
801 VALERR(p);
802 RETURN_OBJ(me);
803 end:
804 return (0);
805 }
806
807 static PyObject *group_pyrichcompare(PyObject *x, PyObject *y, int op)
808 {
809 int b = group_samep(GROUP_G(x), GROUP_G(y));
810 switch (op) {
811 case Py_EQ: break;
812 case Py_NE: b = !b;
813 default: TYERR("can't order groups");
814 }
815 return (getbool(b));
816 end:
817 return (0);
818 }
819
820 static PyObject *gemeth_frombuf(PyObject *me, PyObject *arg)
821 {
822 buf b;
823 char *p;
824 Py_ssize_t n;
825 group *g;
826 ge *x = 0;
827
828 if (!PyArg_ParseTuple(arg, "s#:frombuf", &p, &n)) return (0);
829 g = GROUP_G(me);
830 buf_init(&b, p, n);
831 x = G_CREATE(g);
832 if (G_FROMBUF(g, &b, x)) VALERR("invalid data");
833 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
834 end:
835 if (x) G_DESTROY(g, x);
836 return (0);
837 }
838
839 static PyObject *gemeth_fromraw(PyObject *me, PyObject *arg)
840 {
841 buf b;
842 char *p;
843 Py_ssize_t n;
844 group *g;
845 ge *x = 0;
846
847 if (!PyArg_ParseTuple(arg, "s#:fromraw", &p, &n)) return (0);
848 g = GROUP_G(me);
849 buf_init(&b, p, n);
850 x = G_CREATE(g);
851 if (G_FROMRAW(g, &b, x)) VALERR("invalid data");
852 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
853 end:
854 if (x) G_DESTROY(g, x);
855 return (0);
856 }
857
858 static PyObject *gemeth_fromstring(PyObject *me, PyObject *arg)
859 {
860 mptext_stringctx sc;
861 char *p;
862 Py_ssize_t n;
863 group *g;
864 ge *x = 0;
865
866 if (!PyArg_ParseTuple(arg, "s#:fromstring", &p, &n)) return (0);
867 sc.buf = p;
868 sc.lim = sc.buf + n;
869 g = GROUP_G(me);
870 x = G_CREATE(g);
871 if (G_READ(g, x, &mptext_stringops, &sc))
872 VALERR("bad group element string");
873 return (Py_BuildValue("(Ns#)", ge_pywrap(me, x),
874 sc.buf, (Py_ssize_t)(sc.lim - sc.buf)));
875 end:
876 if (x) G_DESTROY(g, x);
877 return (0);
878 }
879
880 static PyObject *gmeth_parse(PyObject *me, PyObject *arg)
881 {
882 char *p;
883 qd_parse qd;
884 group *g;
885
886 if (!PyArg_ParseTuple(arg, "s:parse", &p)) goto end;
887 qd.p = p; qd.e = 0;
888 if ((g = group_parse(&qd)) == 0) VALERR(qd.e);
889 return (group_pywrap(g));
890 end:
891 return (0);
892 }
893
894 static PyObject *geget_group(PyObject *me, void *hunoz)
895 { RETURN_OBJ(GE_GOBJ(me)); }
896
897 static PyObject *gget_nbits(PyObject *me, void *hunoz)
898 { return (PyInt_FromLong(GROUP_G(me)->nbits)); }
899
900 static PyObject *gget_noctets(PyObject *me, void *hunoz)
901 { return (PyInt_FromLong(GROUP_G(me)->noctets)); }
902
903 static PyObject *gget_i(PyObject *me, void *hunoz)
904 {
905 group *g = GROUP_G(me); ge *x = G_CREATE(g);
906 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
907 }
908
909 static PyObject *gget_g(PyObject *me, void *hunoz)
910 {
911 group *g = GROUP_G(me); ge *x = G_CREATE(g);
912 G_COPY(g, x, g->g); return (ge_pywrap(me, x));
913 }
914
915 static long ge_pyhash(PyObject *me)
916 {
917 buf b;
918 size_t sz = GE_G(me)->noctets + 4;
919 uint32 h = 0xf672c776 + GE_G(me)->ops->ty;
920 octet *p = xmalloc(sz);
921 buf_init(&b, p, sz);
922 G_TOBUF(GE_G(me), &b, GE_X(me));
923 assert(BOK(&b));
924 h = unihash_hash(&unihash_global, h, BBASE(&b), BLEN(&b));
925 xfree(p);
926 return (h % LONG_MAX);
927 }
928
929 static PyObject *gget_r(PyObject *me, void *hunoz)
930 { return (mp_pywrap(MP_COPY(GROUP_G(me)->r))); }
931
932 static PyObject *gget_h(PyObject *me, void *hunoz)
933 { return (mp_pywrap(MP_COPY(GROUP_G(me)->h))); }
934
935 static const PyGetSetDef ge_pygetset[] = {
936 #define GETSETNAME(op, name) ge##op##_##name
937 GET (group, "X.group -> group containing X")
938 #undef GETSETNAME
939 { 0 }
940 };
941
942 static const PyMethodDef ge_pymethods[] = {
943 #define METHNAME(name) gemeth_##name
944 NAMETH(inv, "X.inv() -> inverse element of X")
945 NAMETH(sqr, "X.sqr() -> X^2 = X * X")
946 NAMETH(check, "X.check() -> check X really belongs to its group")
947 NAMETH(toint, "X.toint() -> X converted to an integer")
948 KWMETH(toec, "X.toec([curve = ECPt]) -> "
949 "X converted to elliptic curve point")
950 NAMETH(tobuf, "X.tobuf() -> X in buffer representation")
951 NAMETH(toraw, "X.toraw() -> X in raw representation")
952 CMTH (frombuf, "frombuf(BUF) -> X, REST")
953 CMTH (fromraw, "fromraw(BUF) -> X, REST")
954 CMTH (fromstring, "fromstring(STR) -> X, REST")
955 #undef METHNAME
956 { 0 }
957 };
958
959 static const PyNumberMethods ge_pynumber = {
960 0, /* @nb_add@ */
961 0, /* @nb_subtract@ */
962 ge_pymul, /* @nb_multiply@ */
963 ge_pydiv, /* @nb_divide@ */
964 0, /* @nb_remainder@ */
965 0, /* @nb_divmod@ */
966 ge_pyexp, /* @nb_power@ */
967 0, /* @nb_negative@ */
968 0, /* @nb_positive@ */
969 0, /* @nb_absolute@ */
970 ge_pynonzerop, /* @nb_nonzero@ */
971 0, /* @nb_invert@ */
972 0, /* @nb_lshift@ */
973 0, /* @nb_rshift@ */
974 0, /* @nb_and@ */
975 0, /* @nb_xor@ */
976 0, /* @nb_or@ */
977 0, /* @nb_coerce@ */
978 ge_pyint, /* @nb_int@ */
979 ge_pylong, /* @nb_long@ */
980 0 /* meaningless */, /* @nb_float@ */
981 0, /* @nb_oct@ */
982 0, /* @nb_hex@ */
983
984 0, /* @nb_inplace_add@ */
985 0, /* @nb_inplace_subtract@ */
986 0, /* @nb_inplace_multiply@ */
987 0, /* @nb_inplace_divide@ */
988 0, /* @nb_inplace_remainder@ */
989 0, /* @nb_inplace_power@ */
990 0, /* @nb_inplace_lshift@ */
991 0, /* @nb_inplace_rshift@ */
992 0, /* @nb_inplace_and@ */
993 0, /* @nb_inplace_xor@ */
994 0, /* @nb_inplace_or@ */
995
996 0, /* @nb_floor_divide@ */
997 ge_pydiv, /* @nb_true_divide@ */
998 0, /* @nb_inplace_floor_divide@ */
999 0, /* @nb_inplace_true_divide@ */
1000 };
1001
1002 static const PyTypeObject ge_pytype_skel = {
1003 PyObject_HEAD_INIT(0) 0, /* Header */
1004 "GE", /* @tp_name@ */
1005 sizeof(ge_pyobj), /* @tp_basicsize@ */
1006 0, /* @tp_itemsize@ */
1007
1008 ge_pydealloc, /* @tp_dealloc@ */
1009 0, /* @tp_print@ */
1010 0, /* @tp_getattr@ */
1011 0, /* @tp_setattr@ */
1012 0, /* @tp_compare@ */
1013 0, /* @tp_repr@ */
1014 PYNUMBER(ge), /* @tp_as_number@ */
1015 0, /* @tp_as_sequence@ */
1016 0, /* @tp_as_mapping@ */
1017 ge_pyhash, /* @tp_hash@ */
1018 0, /* @tp_call@ */
1019 ge_pystr, /* @tp_str@ */
1020 0, /* @tp_getattro@ */
1021 0, /* @tp_setattro@ */
1022 0, /* @tp_as_buffer@ */
1023 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1024 Py_TPFLAGS_CHECKTYPES |
1025 Py_TPFLAGS_BASETYPE,
1026
1027 /* @tp_doc@ */
1028 "Group elements, abstract base class.",
1029
1030 0, /* @tp_traverse@ */
1031 0, /* @tp_clear@ */
1032 ge_pyrichcompare, /* @tp_richcompare@ */
1033 0, /* @tp_weaklistoffset@ */
1034 0, /* @tp_iter@ */
1035 0, /* @tp_iternext@ */
1036 PYMETHODS(ge), /* @tp_methods@ */
1037 0, /* @tp_members@ */
1038 PYGETSET(ge), /* @tp_getset@ */
1039 0, /* @tp_base@ */
1040 0, /* @tp_dict@ */
1041 0, /* @tp_descr_get@ */
1042 0, /* @tp_descr_set@ */
1043 0, /* @tp_dictoffset@ */
1044 0, /* @tp_init@ */
1045 PyType_GenericAlloc, /* @tp_alloc@ */
1046 abstract_pynew, /* @tp_new@ */
1047 0, /* @tp_free@ */
1048 0 /* @tp_is_gc@ */
1049 };
1050
1051 static const PyGetSetDef group_pygetset[] = {
1052 #define GETSETNAME(op, name) g##op##_##name
1053 GET (noctets, "G.noctets -> size in octets of element")
1054 GET (nbits, "G.nbits -> size in bits of element")
1055 GET (i, "G.i -> group identity")
1056 GET (g, "G.g -> group generator")
1057 GET (r, "G.r -> group order")
1058 GET (h, "G.h -> group cofactor")
1059 #undef GETSETNAME
1060 { 0 }
1061 };
1062
1063 static const PyMethodDef group_pymethods[] = {
1064 #define METHNAME(name) gmeth_##name
1065 METH (mexp, "G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1066 KWMETH(checkgroup, "G.checkgroup([rng = rand]): check group is good")
1067 SMTH (parse, "parse(STR) -> G, REST")
1068 #undef METHNAME
1069 { 0 }
1070 };
1071
1072 static const PyTypeObject group_pytype_skel = {
1073 PyObject_HEAD_INIT(0) 0, /* Header */
1074 "Group", /* @tp_name@ */
1075 sizeof(group_pyobj), /* @tp_basicsize@ */
1076 0, /* @tp_itemsize@ */
1077
1078 group_pydealloc, /* @tp_dealloc@ */
1079 0, /* @tp_print@ */
1080 0, /* @tp_getattr@ */
1081 0, /* @tp_setattr@ */
1082 0, /* @tp_compare@ */
1083 0, /* @tp_repr@ */
1084 0, /* @tp_as_number@ */
1085 0, /* @tp_as_sequence@ */
1086 0, /* @tp_as_mapping@ */
1087 0, /* @tp_hash@ */
1088 0, /* @tp_call@ */
1089 0, /* @tp_str@ */
1090 0, /* @tp_getattro@ */
1091 0, /* @tp_setattro@ */
1092 0, /* @tp_as_buffer@ */
1093 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1094 Py_TPFLAGS_BASETYPE,
1095
1096 /* @tp_doc@ */
1097 "Abstract base class for groups.",
1098
1099 0, /* @tp_traverse@ */
1100 0, /* @tp_clear@ */
1101 group_pyrichcompare, /* @tp_richcompare@ */
1102 0, /* @tp_weaklistoffset@ */
1103 0, /* @tp_iter@ */
1104 0, /* @tp_iternext@ */
1105 PYMETHODS(group), /* @tp_methods@ */
1106 0, /* @tp_members@ */
1107 PYGETSET(group), /* @tp_getset@ */
1108 0, /* @tp_base@ */
1109 0, /* @tp_dict@ */
1110 0, /* @tp_descr_get@ */
1111 0, /* @tp_descr_set@ */
1112 0, /* @tp_dictoffset@ */
1113 0, /* @tp_init@ */
1114 PyType_GenericAlloc, /* @tp_alloc@ */
1115 abstract_pynew, /* @tp_new@ */
1116 0, /* @tp_free@ */
1117 0 /* @tp_is_gc@ */
1118 };
1119
1120 static PyObject *pgget_info(PyObject *me, void *hunoz)
1121 {
1122 gprime_param dp;
1123 gctx_prime *gg = (gctx_prime *)GROUP_G(me);
1124 dp.p = MP_COPY(gg->mm.m);
1125 dp.q = MP_COPY(gg->g.r);
1126 dp.g = mpmont_reduce(&gg->mm, MP_NEW, gg->gen.x);
1127 return (fginfo_pywrap(&dp, dhinfo_pytype));
1128 }
1129
1130 static const PyGetSetDef primegroup_pygetset[] = {
1131 #define GETSETNAME(op, name) pg##op##_##name
1132 GET (info, "G.info -> information about the group")
1133 #undef GETSETNAME
1134 { 0 }
1135 };
1136
1137 static PyObject *primegroup_pynew(PyTypeObject *ty,
1138 PyObject *arg, PyObject *kw)
1139 {
1140 PyObject *i;
1141 static const char *const kwlist[] = { "info", 0 };
1142
1143 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", KWLIST,
1144 dhinfo_pytype, &i))
1145 return (0);
1146 return (group_dopywrap(ty, group_prime(FGINFO_DP(i))));
1147 }
1148
1149 static const PyTypeObject primegroup_pytype_skel = {
1150 PyObject_HEAD_INIT(0) 0, /* Header */
1151 "PrimeGroup", /* @tp_name@ */
1152 sizeof(group_pyobj), /* @tp_basicsize@ */
1153 0, /* @tp_itemsize@ */
1154
1155 group_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@ */
1174 "PrimeGroup(INFO): subgroups of prime fields.",
1175
1176 0, /* @tp_traverse@ */
1177 0, /* @tp_clear@ */
1178 0, /* @tp_richcompare@ */
1179 0, /* @tp_weaklistoffset@ */
1180 0, /* @tp_iter@ */
1181 0, /* @tp_iternext@ */
1182 0, /* @tp_methods@ */
1183 0, /* @tp_members@ */
1184 PYGETSET(primegroup), /* @tp_getset@ */
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 primegroup_pynew, /* @tp_new@ */
1193 0, /* @tp_free@ */
1194 0 /* @tp_is_gc@ */
1195 };
1196
1197 static PyObject *bgget_info(PyObject *me, void *hunoz)
1198 {
1199 gbin_param dp;
1200 gctx_bin *gg = (gctx_bin *)GROUP_G(me);
1201 dp.p = MP_COPY(gg->r.p);
1202 dp.q = MP_COPY(gg->g.r);
1203 dp.g = MP_COPY(gg->gen.x);
1204 return (fginfo_pywrap(&dp, bindhinfo_pytype));
1205 }
1206
1207 static const PyGetSetDef bingroup_pygetset[] = {
1208 #define GETSETNAME(op, name) bg##op##_##name
1209 GET (info, "G.info -> information about the group")
1210 #undef GETSETNAME
1211 { 0 }
1212 };
1213
1214 static PyObject *bingroup_pynew(PyTypeObject *ty,
1215 PyObject *arg, PyObject *kw)
1216 {
1217 PyObject *i;
1218 static const char *const kwlist[] = { "info", 0 };
1219
1220 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", KWLIST,
1221 bindhinfo_pytype, &i))
1222 return (0);
1223 return (group_dopywrap(ty, group_binary(FGINFO_DP(i))));
1224 }
1225
1226 static const PyTypeObject bingroup_pytype_skel = {
1227 PyObject_HEAD_INIT(0) 0, /* Header */
1228 "BinGroup", /* @tp_name@ */
1229 sizeof(group_pyobj), /* @tp_basicsize@ */
1230 0, /* @tp_itemsize@ */
1231
1232 group_pydealloc, /* @tp_dealloc@ */
1233 0, /* @tp_print@ */
1234 0, /* @tp_getattr@ */
1235 0, /* @tp_setattr@ */
1236 0, /* @tp_compare@ */
1237 0, /* @tp_repr@ */
1238 0, /* @tp_as_number@ */
1239 0, /* @tp_as_sequence@ */
1240 0, /* @tp_as_mapping@ */
1241 0, /* @tp_hash@ */
1242 0, /* @tp_call@ */
1243 0, /* @tp_str@ */
1244 0, /* @tp_getattro@ */
1245 0, /* @tp_setattro@ */
1246 0, /* @tp_as_buffer@ */
1247 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1248 Py_TPFLAGS_BASETYPE,
1249
1250 /* @tp_doc@ */
1251 "BinGroup(INFO): subgroups of binary fields.",
1252
1253 0, /* @tp_traverse@ */
1254 0, /* @tp_clear@ */
1255 0, /* @tp_richcompare@ */
1256 0, /* @tp_weaklistoffset@ */
1257 0, /* @tp_iter@ */
1258 0, /* @tp_iternext@ */
1259 0, /* @tp_methods@ */
1260 0, /* @tp_members@ */
1261 PYGETSET(bingroup), /* @tp_getset@ */
1262 0, /* @tp_base@ */
1263 0, /* @tp_dict@ */
1264 0, /* @tp_descr_get@ */
1265 0, /* @tp_descr_set@ */
1266 0, /* @tp_dictoffset@ */
1267 0, /* @tp_init@ */
1268 PyType_GenericAlloc, /* @tp_alloc@ */
1269 bingroup_pynew, /* @tp_new@ */
1270 0, /* @tp_free@ */
1271 0 /* @tp_is_gc@ */
1272 };
1273
1274 static PyObject *egget_info(PyObject *me, void *hunoz)
1275 {
1276 ec_info ei;
1277 gctx_ec *gg = (gctx_ec *)GROUP_G(me);
1278
1279 ecinfo_copy(&ei, &gg->ei);
1280 return (ecinfo_pywrap(&ei));
1281 }
1282
1283 static const PyGetSetDef ecgroup_pygetset[] = {
1284 #define GETSETNAME(op, name) eg##op##_##name
1285 GET (info, "G.info -> information about the group")
1286 #undef GETSETNAME
1287 { 0 }
1288 };
1289
1290 static PyObject *ecgroup_pynew(PyTypeObject *ty,
1291 PyObject *arg, PyObject *kw)
1292 {
1293 PyObject *i;
1294 ec_info ei;
1295 static const char *const kwlist[] = { "info", 0 };
1296
1297 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", KWLIST,
1298 ecinfo_pytype, &i))
1299 return (0);
1300 ecinfo_copy(&ei, ECINFO_EI(i));
1301 return (group_dopywrap(ty, group_ec(&ei)));
1302 }
1303
1304 static const PyTypeObject ecgroup_pytype_skel = {
1305 PyObject_HEAD_INIT(0) 0, /* Header */
1306 "ECGroup", /* @tp_name@ */
1307 sizeof(group_pyobj), /* @tp_basicsize@ */
1308 0, /* @tp_itemsize@ */
1309
1310 group_pydealloc, /* @tp_dealloc@ */
1311 0, /* @tp_print@ */
1312 0, /* @tp_getattr@ */
1313 0, /* @tp_setattr@ */
1314 0, /* @tp_compare@ */
1315 0, /* @tp_repr@ */
1316 0, /* @tp_as_number@ */
1317 0, /* @tp_as_sequence@ */
1318 0, /* @tp_as_mapping@ */
1319 0, /* @tp_hash@ */
1320 0, /* @tp_call@ */
1321 0, /* @tp_str@ */
1322 0, /* @tp_getattro@ */
1323 0, /* @tp_setattro@ */
1324 0, /* @tp_as_buffer@ */
1325 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1326 Py_TPFLAGS_BASETYPE,
1327
1328 /* @tp_doc@ */
1329 "ECGroup(INFO): elliptic curve groups.",
1330
1331 0, /* @tp_traverse@ */
1332 0, /* @tp_clear@ */
1333 0, /* @tp_richcompare@ */
1334 0, /* @tp_weaklistoffset@ */
1335 0, /* @tp_iter@ */
1336 0, /* @tp_iternext@ */
1337 0, /* @tp_methods@ */
1338 0, /* @tp_members@ */
1339 PYGETSET(ecgroup), /* @tp_getset@ */
1340 0, /* @tp_base@ */
1341 0, /* @tp_dict@ */
1342 0, /* @tp_descr_get@ */
1343 0, /* @tp_descr_set@ */
1344 0, /* @tp_dictoffset@ */
1345 0, /* @tp_init@ */
1346 PyType_GenericAlloc, /* @tp_alloc@ */
1347 ecgroup_pynew, /* @tp_new@ */
1348 0, /* @tp_free@ */
1349 0 /* @tp_is_gc@ */
1350 };
1351
1352 /*----- Global stuff ------------------------------------------------------*/
1353
1354 void group_pyinit(void)
1355 {
1356 INITTYPE(fginfo, root);
1357 INITTYPE(dhinfo, fginfo);
1358 INITTYPE(bindhinfo, dhinfo);
1359 INITTYPE(ge, root);
1360 INITTYPE(group, type);
1361 INITTYPE(primegroup, group);
1362 INITTYPE(bingroup, group);
1363 INITTYPE(ecgroup, group);
1364 }
1365
1366 static const char *grp_namefn(const void *p)
1367 { const pentry *pt = p; return (pt->name); }
1368
1369 static int grp_ixfn(const pentry *tab, const pentry *pt)
1370 {
1371 int i;
1372
1373 for (i = 0; tab[i].name; i++)
1374 if (tab[i].data == pt->data) return (i);
1375 return (-1);
1376 }
1377 static int pgrp_ixfn(const void *p) { return (grp_ixfn(ptab, p)); }
1378 static int bgrp_ixfn(const void *p) { return (grp_ixfn(bintab, p)); }
1379
1380 static PyObject *grp_valfn(const pentry *tab, PyTypeObject *ty, int i)
1381 {
1382 gprime_param gp;
1383
1384 dh_infofromdata(&gp, tab[i].data);
1385 return (fginfo_pywrap(&gp, ty));
1386 }
1387 static PyObject *pgrp_valfn(int i)
1388 { return (grp_valfn(ptab, dhinfo_pytype, i)); }
1389 static PyObject *bgrp_valfn(int i)
1390 { return (grp_valfn(bintab, bindhinfo_pytype, i)); }
1391
1392 void group_pyinsert(PyObject *mod)
1393 {
1394 INSERT("FGInfo", fginfo_pytype);
1395 INSERT("DHInfo", dhinfo_pytype);
1396 INSERT("BinDHInfo", bindhinfo_pytype);
1397 INSERT("GE", ge_pytype);
1398 INSERT("Group", group_pytype);
1399 INSERT("PrimeGroup", primegroup_pytype);
1400 INSERT("BinGroup", bingroup_pytype);
1401 INSERT("ECGroup", ecgroup_pytype);
1402 INSERT("primegroups", make_grouptab(ptab, sizeof(*ptab),
1403 grp_namefn, pgrp_ixfn, pgrp_valfn));
1404 INSERT("bingroups", make_grouptab(bintab, sizeof(*bintab),
1405 grp_namefn, bgrp_ixfn, bgrp_valfn));
1406 }
1407
1408 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings