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[catacomb-python] / group.c
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d7ab1bab 1/* -*-c-*-
2 *
3 * $Id$
4 *
5 * Abstract group inteface
6 *
7 * (c) 2004 Straylight/Edgeware
8 */
9
10/*----- Licensing notice --------------------------------------------------*
11 *
12 * This file is part of the Python interface to Catacomb.
13 *
14 * Catacomb/Python is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * Catacomb/Python is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with Catacomb/Python; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 */
28
29/*----- Header files ------------------------------------------------------*/
30
31#include "catacomb-python.h"
32
33/*----- DH and binary group infos -----------------------------------------*/
34
35PyObject *fginfo_pywrap(gprime_param *dp, PyTypeObject *ty)
36{
37 fginfo_pyobj *z = PyObject_New(fginfo_pyobj, ty);
38 z->dp.p = MP_COPY(dp->p);
39 z->dp.q = MP_COPY(dp->q);
40 z->dp.g = MP_COPY(dp->g);
41 return ((PyObject *)z);
42}
43
44static PyObject *fginfo_pynew(PyTypeObject *ty,
45 PyObject *arg, PyObject *kw)
46{
47 char *kwlist[] = { "p", "r", "g", 0 };
48 gprime_param dp = { 0 };
49 fginfo_pyobj *z = 0;
50
51 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&O&:new", kwlist,
52 convmp, &dp.p,
53 convmp, &dp.q,
54 &convmp, dp.g))
55 goto end;
56 z = PyObject_New(fginfo_pyobj, ty);
57 z->dp = dp;
58 return ((PyObject *)z);
59end:
60 mp_drop(dp.p);
61 mp_drop(dp.q);
62 mp_drop(dp.g);
63 return (0);
64}
65
66static PyObject *figet_r(PyObject *me, void *hunoz)
67 { return mp_pywrap(FGINFO_DP(me)->q); }
68
69static PyObject *diget_p(PyObject *me, void *hunoz)
70 { return mp_pywrap(FGINFO_DP(me)->p); }
71
72static PyObject *diget_g(PyObject *me, void *hunoz)
73 { return mp_pywrap(FGINFO_DP(me)->g); }
74
75static PyObject *biget_p(PyObject *me, void *hunoz)
76 { return gf_pywrap(FGINFO_DP(me)->p); }
77
78static PyObject *biget_m(PyObject *me, void *hunoz)
79 { return PyInt_FromLong(mp_octets(FGINFO_DP(me)->p) - 1); }
80
81static PyObject *biget_g(PyObject *me, void *hunoz)
82 { return gf_pywrap(FGINFO_DP(me)->g); }
83
84static void fginfo_pydealloc(PyObject *me)
85{
86 mp_drop(FGINFO_DP(me)->p);
87 mp_drop(FGINFO_DP(me)->q);
88 mp_drop(FGINFO_DP(me)->g);
3aa33042 89 FREEOBJ(me);
d7ab1bab 90}
91
92static PyObject *meth__DHInfo_generate(PyObject *me,
93 PyObject *arg, PyObject *kw)
94{
95 dh_param dp;
96 unsigned ql = 0, pl;
97 unsigned steps = 0;
98 grand *r = &rand_global;
99 pgev evt = { 0 };
100 char *kwlist[] =
101 { "class", "pbits", "qbits", "event", "rng", "nsteps", 0 };
102 PyObject *rc = 0;
103
104 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", kwlist,
105 &me, convuint, &pl, convuint, &ql,
106 convpgev, &evt, convgrand, &r,
107 convuint, &steps))
108 goto end;
109 if (dh_gen(&dp, ql, pl, steps, r, evt.proc, evt.ctx))
110 PGENERR;
111 rc = fginfo_pywrap(&dp, dhinfo_pytype);
112end:
113 droppgev(&evt);
114 return (rc);
115}
116
117static PyObject *meth__DHInfo_genlimlee(PyObject *me,
118 PyObject *arg, PyObject *kw)
119{
120 dh_param dp;
121 unsigned ql, pl;
122 unsigned steps = 0;
123 grand *r = &rand_global;
124 pgev oe = { 0 }, ie = { 0 };
125 int subgroupp = 1;
126 unsigned f = 0;
127 char *kwlist[] = { "class", "pbits", "qbits", "event", "ievent",
128 "rng", "nsteps", "subgroupp", 0 };
129 size_t i, nf;
130 mp **v = 0;
131 PyObject *rc = 0, *vec = 0;
132
133 if (!PyArg_ParseTupleAndKeywords(arg, kw,
134 "OO&O&|O&O&O&O&O&:genlimlee", kwlist,
135 &me, convuint, &pl, convuint, &ql,
136 convpgev, &oe, convpgev, &ie,
137 convgrand, &r, convuint, &steps,
138 convbool, &subgroupp))
139 goto end;
140 if (subgroupp) f |= DH_SUBGROUP;
141 if (dh_limlee(&dp, ql, pl, f, steps, r,
142 oe.proc, oe.ctx, ie.proc, ie.ctx, &nf, &v))
143 PGENERR;
144 vec = PyList_New(nf);
145 for (i = 0; i < nf; i++)
146 PyList_SetItem(vec, i, mp_pywrap(v[i]));
147 xfree(v);
148 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype), vec);
149end:
150 droppgev(&oe); droppgev(&ie);
151 return (rc);
152}
153
154static PyObject *meth__DHInfo_gendsa(PyObject *me,
155 PyObject *arg, PyObject *kw)
156{
157 dsa_param dp;
158 unsigned ql, pl;
159 unsigned steps = 0;
160 dsa_seed ds;
161 char *k;
162 int ksz;
163 pgev evt = { 0 };
164 char *kwlist[] =
165 { "class", "pbits", "qbits", "seed", "event", "nsteps", 0 };
166 PyObject *rc = 0;
167
168 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&O&s#|O&O&:generate", kwlist,
169 &me, convuint, &pl, convuint, &ql,
170 &k, &ksz, convpgev, &evt,
171 convuint, &steps))
172 goto end;
173 if (dsa_gen(&dp, ql, pl, steps, k, ksz, &ds, evt.proc, evt.ctx))
174 PGENERR;
175 rc = Py_BuildValue("(NNl)", fginfo_pywrap(&dp, dhinfo_pytype),
176 bytestring_pywrap(ds.p, ds.sz), (long)ds.count);
177 xfree(ds.p);
178end:
179 droppgev(&evt);
180 return (rc);
181}
182
183static int npgroups = -1, nbingroups = -1;
184
185static PyObject *namedgroups(const pentry *pp, int *ne)
186{
187 int i, j;
188 const char *p;
189 PyObject *d, *c;
190
191 d = PyDict_New();
192 for (i = 0; pp[i].name; i++) {
193 p = pp[i].name;
194 for (j = 0; j < i; j++) {
195 if (pp[i].data == pp[j].data) {
196 c = PyDict_GetItemString(d, (/*unconst*/ char *)pp[j].name);
197 Py_INCREF(c);
198 goto found;
199 }
200 }
201 c = PyInt_FromLong(i);
202 found:
203 PyDict_SetItemString(d, (/*unconst*/ char *)pp[i].name, c);
204 Py_DECREF(c);
205 }
206 *ne = i;
207 return (d);
208}
209
210static PyObject *meth__groupn(PyObject *me, PyObject *arg,
211 PyTypeObject *ty, const pentry *pp, int ne)
212{
213 int i;
214 gprime_param gp;
215 PyObject *rc = 0;
216
217 if (!PyArg_ParseTuple(arg, "Oi:_groupn", &me, &i)) goto end;
218 if (i < 0 || i >= ne) VALERR("group index out of range");
219 dh_infofromdata(&gp, pp[i].data);
220 rc = fginfo_pywrap(&gp, ty);
221end:
222 return (rc);
223}
224
225static PyObject *meth__DHInfo__groupn(PyObject *me, PyObject *arg)
226 { return (meth__groupn(me, arg, dhinfo_pytype, ptab, npgroups)); }
227
228static PyObject *meth__BinDHInfo__groupn(PyObject *me, PyObject *arg)
229 { return (meth__groupn(me, arg, bindhinfo_pytype, bintab, nbingroups)); }
230
231static PyObject *meth__parse(PyObject *me, PyObject *arg, PyTypeObject *ty,
232 int (*parse)(qd_parse *, gprime_param *))
233{
234 qd_parse qd;
235 char *p;
236 gprime_param gp;
237 PyObject *rc = 0;
238
239 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p)) goto end;
240 qd.p = p;
241 qd.e = 0;
242 if (parse(&qd, &gp)) SYNERR(qd.e);
243 rc = fginfo_pywrap(&gp, ty);
244end:
245 return (rc);
246}
247
248static PyObject *meth__DHInfo_parse(PyObject *me, PyObject *arg)
249 { return (meth__parse(me, arg, dhinfo_pytype, dh_parse)); }
250
251static PyObject *meth__BinDHInfo_parse(PyObject *me, PyObject *arg)
252 { return (meth__parse(me, arg, bindhinfo_pytype, dhbin_parse)); }
253
254static PyGetSetDef fginfo_pygetset[] = {
255#define GETSETNAME(op, name) fi##op##_##name
256 GET (r, "I.r -> group order")
257#undef GETSETNAME
258 { 0 }
259};
260
261static PyGetSetDef dhinfo_pygetset[] = {
262#define GETSETNAME(op, name) di##op##_##name
263 GET (p, "I.p -> prime")
264 GET (g, "I.g -> generator")
265#undef GETSETNAME
266 { 0 }
267};
268
269static PyGetSetDef bindhinfo_pygetset[] = {
270#define GETSETNAME(op, name) bi##op##_##name
271 GET (p, "I.p -> irreducible polynomial")
272 GET (m, "I.m -> degree of polynomial")
273 GET (g, "I.g -> generator")
274#undef GETSETNAME
275 { 0 }
276};
277
278static PyTypeObject fginfo_pytype_skel = {
279 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
280 "catacomb.FGInfo", /* @tp_name@ */
281 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
282 0, /* @tp_itemsize@ */
283
284 fginfo_pydealloc, /* @tp_dealloc@ */
285 0, /* @tp_print@ */
286 0, /* @tp_getattr@ */
287 0, /* @tp_setattr@ */
288 0, /* @tp_compare@ */
289 0, /* @tp_repr@ */
290 0, /* @tp_as_number@ */
291 0, /* @tp_as_sequence@ */
292 0, /* @tp_as_mapping@ */
293 0, /* @tp_hash@ */
294 0, /* @tp_call@ */
295 0, /* @tp_str@ */
296 0, /* @tp_getattro@ */
297 0, /* @tp_setattro@ */
298 0, /* @tp_as_buffer@ */
299 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
300 Py_TPFLAGS_BASETYPE,
301
302 /* @tp_doc@ */
303 "Abstract base class for field-group information objects.",
304
305 0, /* @tp_traverse@ */
306 0, /* @tp_clear@ */
307 0, /* @tp_richcompare@ */
308 0, /* @tp_weaklistoffset@ */
309 0, /* @tp_iter@ */
310 0, /* @tp_iternexr@ */
311 0, /* @tp_methods@ */
312 0, /* @tp_members@ */
313 fginfo_pygetset, /* @tp_getset@ */
314 0, /* @tp_base@ */
315 0, /* @tp_dict@ */
316 0, /* @tp_descr_get@ */
317 0, /* @tp_descr_set@ */
318 0, /* @tp_dictoffset@ */
319 0, /* @tp_init@ */
320 PyType_GenericAlloc, /* @tp_alloc@ */
321 abstract_pynew, /* @tp_new@ */
3aa33042 322 0, /* @tp_free@ */
d7ab1bab 323 0 /* @tp_is_gc@ */
324};
325
326static PyTypeObject dhinfo_pytype_skel = {
327 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
328 "catacomb.DHInfo", /* @tp_name@ */
329 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
330 0, /* @tp_itemsize@ */
331
332 fginfo_pydealloc, /* @tp_dealloc@ */
333 0, /* @tp_print@ */
334 0, /* @tp_getattr@ */
335 0, /* @tp_setattr@ */
336 0, /* @tp_compare@ */
337 0, /* @tp_repr@ */
338 0, /* @tp_as_number@ */
339 0, /* @tp_as_sequence@ */
340 0, /* @tp_as_mapping@ */
341 0, /* @tp_hash@ */
342 0, /* @tp_call@ */
343 0, /* @tp_str@ */
344 0, /* @tp_getattro@ */
345 0, /* @tp_setattro@ */
346 0, /* @tp_as_buffer@ */
347 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
348 Py_TPFLAGS_BASETYPE,
349
350 /* @tp_doc@ */
351 "Standard (integer) Diffie-Hellman group information.",
352
353 0, /* @tp_traverse@ */
354 0, /* @tp_clear@ */
355 0, /* @tp_richcompare@ */
356 0, /* @tp_weaklistoffset@ */
357 0, /* @tp_iter@ */
358 0, /* @tp_iternexr@ */
359 0, /* @tp_methods@ */
360 0, /* @tp_members@ */
361 dhinfo_pygetset, /* @tp_getset@ */
362 0, /* @tp_base@ */
363 0, /* @tp_dict@ */
364 0, /* @tp_descr_get@ */
365 0, /* @tp_descr_set@ */
366 0, /* @tp_dictoffset@ */
367 0, /* @tp_init@ */
368 PyType_GenericAlloc, /* @tp_alloc@ */
369 fginfo_pynew, /* @tp_new@ */
3aa33042 370 0, /* @tp_free@ */
d7ab1bab 371 0 /* @tp_is_gc@ */
372};
373
374static PyTypeObject bindhinfo_pytype_skel = {
375 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
376 "catacomb.BinDHInfo", /* @tp_name@ */
377 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
378 0, /* @tp_itemsize@ */
379
380 fginfo_pydealloc, /* @tp_dealloc@ */
381 0, /* @tp_print@ */
382 0, /* @tp_getattr@ */
383 0, /* @tp_setattr@ */
384 0, /* @tp_compare@ */
385 0, /* @tp_repr@ */
386 0, /* @tp_as_number@ */
387 0, /* @tp_as_sequence@ */
388 0, /* @tp_as_mapping@ */
389 0, /* @tp_hash@ */
390 0, /* @tp_call@ */
391 0, /* @tp_str@ */
392 0, /* @tp_getattro@ */
393 0, /* @tp_setattro@ */
394 0, /* @tp_as_buffer@ */
395 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
396 Py_TPFLAGS_BASETYPE,
397
398 /* @tp_doc@ */
399 "Binary-field Diffie-Hellman group information.",
400
401 0, /* @tp_traverse@ */
402 0, /* @tp_clear@ */
403 0, /* @tp_richcompare@ */
404 0, /* @tp_weaklistoffset@ */
405 0, /* @tp_iter@ */
406 0, /* @tp_iternexr@ */
407 0, /* @tp_methods@ */
408 0, /* @tp_members@ */
409 bindhinfo_pygetset, /* @tp_getset@ */
410 0, /* @tp_base@ */
411 0, /* @tp_dict@ */
412 0, /* @tp_descr_get@ */
413 0, /* @tp_descr_set@ */
414 0, /* @tp_dictoffset@ */
415 0, /* @tp_init@ */
416 PyType_GenericAlloc, /* @tp_alloc@ */
417 fginfo_pynew, /* @tp_new@ */
3aa33042 418 0, /* @tp_free@ */
d7ab1bab 419 0 /* @tp_is_gc@ */
420};
421
422/*----- General utilities -------------------------------------------------*/
423
424PyTypeObject *ge_pytype, *group_pytype;
425PyTypeObject *primegroup_pytype, *bingroup_pytype, *ecgroup_pytype;
426
427group *group_copy(group *g)
428{
429 if (strcmp(G_NAME(g), "prime") == 0) {
430 gctx_prime *gc = (gctx_prime *)g;
431 gprime_param gp;
432 gp.g = G_TOINT(g, MP_NEW, g->g);
433 gp.p = gc->mm.m;
434 gp.q = gc->g.r;
435 g = group_prime(&gp);
436 MP_DROP(gp.g);
437 } else if (strcmp(G_NAME(g), "bin") == 0) {
438 gctx_bin *gc = (gctx_bin *)g;
439 gbin_param gb;
440 gb.g = G_TOINT(g, MP_NEW, g->g);
441 gb.p = gc->r.p;
442 gb.q = gc->g.r;
443 g = group_binary(&gb);
444 MP_DROP(gb.g);
445 } else if (strcmp(G_NAME(g), "ec") == 0) {
446 gctx_ec *gc = (gctx_ec *)g;
447 ec_info ei;
448 if ((ei.c = eccurve_copy(gc->ei.c)) == 0)
449 return (0);
450 EC_CREATE(&ei.g);
451 EC_COPY(&ei.g, &gc->ei.g);
452 ei.r = MP_COPY(gc->ei.r);
453 ei.h = MP_COPY(gc->ei.h);
454 g = group_ec(&ei);
455 } else
456 g = 0;
457 return (g);
458}
459
460PyObject *ge_pywrap(PyObject *gobj, ge *x)
461{
462 ge_pyobj *z = PyObject_New(ge_pyobj, (PyTypeObject *)gobj);
463 z->x = x;
464 z->g = GROUP_G(gobj);
465 Py_INCREF(gobj);
466 return ((PyObject *)z);
467}
468
469static PyObject *ge_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
470{
471 char *kwlist[] = { "x", 0 };
472 PyObject *x;
473 group *g;
474 ec p = EC_INIT;
475 mp *y = 0;
476 ge *xx = 0;
477 mptext_stringctx sc;
478
479 g = GROUP_G(ty);
480 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O:new", kwlist, &x)) goto end;
481 xx = G_CREATE(g);
482 if (ECPT_PYCHECK(x)) {
483 getecptout(&p, x);
484 if (G_FROMEC(g, xx, &p))
485 TYERR("can't convert from elliptic curve point");
486 EC_DESTROY(&p);
487 } else if ((y = tomp(x)) != 0) {
488 if (G_FROMINT(g, xx, y))
489 TYERR("can't convert from integer");
490 MP_DROP(y);
491 } else if (PyString_Check(x)) {
492 sc.buf = PyString_AS_STRING(x);
493 sc.lim = sc.buf + PyString_GET_SIZE(x);
494 if (G_READ(g, xx, &mptext_stringops, &sc) || sc.buf < sc.lim)
495 SYNERR("malformed group element string");
496 } else
497 TYERR("can't convert to group element");
498 return (ge_pywrap((PyObject *)ty, xx));
499end:
500 mp_drop(y);
501 EC_DESTROY(&p);
502 if (xx) G_DESTROY(g, xx);
503 return (0);
504}
505
506static PyObject *group_dopywrap(PyTypeObject *ty, group *g)
507{
df9f8366 508 group_pyobj *gobj = newtype(ty, 0, g->ops->name);
d7ab1bab 509 gobj->g = g;
df9f8366 510 gobj->ty.type.tp_basicsize = sizeof(ge_pyobj);
511 gobj->ty.type.tp_base = ge_pytype;
d7ab1bab 512 Py_INCREF(group_pytype);
df9f8366 513 gobj->ty.type.tp_flags = (Py_TPFLAGS_DEFAULT |
514 Py_TPFLAGS_BASETYPE |
515 Py_TPFLAGS_CHECKTYPES |
516 Py_TPFLAGS_HEAPTYPE);
517 gobj->ty.type.tp_alloc = PyType_GenericAlloc;
518 gobj->ty.type.tp_free = 0;
519 gobj->ty.type.tp_new = ge_pynew;
520 PyType_Ready(&gobj->ty.type);
d7ab1bab 521 return ((PyObject *)gobj);
522}
523
524PyObject *group_pywrap(group *g)
525{
526 PyTypeObject *ty;
527
528 if (strcmp(G_NAME(g), "prime") == 0) ty = primegroup_pytype;
529 else if (strcmp(G_NAME(g), "bin") == 0) ty = bingroup_pytype;
530 else if (strcmp(G_NAME(g), "ec") == 0) ty = ecgroup_pytype;
531 else abort();
532 return (group_dopywrap(ty, g));
533}
534
535/*----- Group elements ----------------------------------------------------*/
536
537#define BINOP(name) \
538 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
539 { \
540 ge *z; \
541 group *g; \
542 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
543 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
544 RETURN_NOTIMPL; \
545 g = GE_G(x); \
546 z = G_CREATE(g); \
547 g->ops->name(g, z, GE_X(x), GE_X(y)); \
548 return (ge_pywrap(GE_GOBJ(x), z)); \
549 }
550BINOP(mul)
551BINOP(div)
552#undef BINOP
553
554#define UNOP(name) \
555 static PyObject *gemeth_##name(PyObject *me, PyObject *arg) \
556 { \
557 group *g; \
558 ge *z; \
559 if (!PyArg_ParseTuple(arg, ":" #name)) return (0); \
560 g = GE_G(me); \
561 z = G_CREATE(g); \
562 g->ops->name(g, z, GE_X(me)); \
563 return (ge_pywrap(GE_GOBJ(me), z)); \
564 }
565UNOP(sqr)
566UNOP(inv)
567#undef UNOP
568
569static PyObject *ge_pyexp(PyObject *x, PyObject *n, PyObject *m)
570{
571 mp *nn;
572 ge *z;
573
574 if (m != Py_None || !GE_PYCHECK(x) || (nn = getmp(n)) == 0)
575 RETURN_NOTIMPL;
576 z = G_CREATE(GE_G(x));
577 G_EXP(GE_G(x), z, GE_X(x), nn);
578 MP_DROP(nn);
579 return (ge_pywrap(GE_GOBJ(x), z));
580}
581
582static void ge_pydealloc(PyObject *me)
583{
584 G_DESTROY(GE_G(me), GE_X(me));
585 Py_DECREF(GE_GOBJ(me));
3aa33042 586 FREEOBJ(me);
d7ab1bab 587}
588
589static void group_pydealloc(PyObject *me)
590{
591 G_DESTROYGROUP(GROUP_G(me));
592 PyType_Type.tp_dealloc(me);
593}
594
595static PyObject *gmexp_id(PyObject *me)
596{
597 group *g = GROUP_G(me); ge *x = G_CREATE(g);
598 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
599}
600
601static int gmexp_fill(void *pp, PyObject *me, PyObject *x, PyObject *m)
602{
603 group_expfactor *f = pp;
604
605 if (!GE_PYCHECK(x) || GE_G(x) != GROUP_G(me) || (f->exp = getmp(m)) == 0)
606 return (-1);
607 f->base = GE_X(x);
608 return (0);
609}
610
611static PyObject *ge_pyrichcompare(PyObject *x, PyObject *y, int op)
612{
613 int b;
614 PyObject *rc = 0;
615
616 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) ||
617 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y))))
618 RETURN_NOTIMPL;
619 switch (op) {
620 case Py_EQ: b = G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
621 case Py_NE: b = !G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
622 default: TYERR("group elements are unordered");
623 }
624 rc = getbool(b);
625end:
626 return (rc);
627}
628
629static PyObject *gemeth_check(PyObject *me, PyObject *arg)
630{
631 if (!PyArg_ParseTuple(arg, ":check")) goto end;
632 if (group_check(GE_G(me), GE_X(me))) VALERR("bad group element");
633 RETURN_OBJ(me);
634end:
635 return (0);
636}
637
638static int ge_pynonzerop(PyObject *x)
639 { return (!G_IDENTP(GE_G(x), GE_X(x))); }
640
641static PyObject *ge_pystr(PyObject *me)
642{
643 dstr d = DSTR_INIT;
644 PyObject *rc;
645
646 group_writedstr(GE_G(me), GE_X(me), &d);
647 rc = PyString_FromStringAndSize(d.buf, d.len);
648 DDESTROY(&d);
649 return (rc);
650}
651
652static PyObject *ge_pylong(PyObject *me)
653{
654 mp *x = 0;
655 PyObject *rc = 0;
656
657 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
658 TYERR("can't convert to integer");
659 rc = (PyObject *)mp_topylong(x);
660end:
661 mp_drop(x);
662 return (rc);
663}
664
665static PyObject *ge_pyint(PyObject *me)
666{
667 mp *x = 0;
668 PyObject *rc = 0;
669 long l;
670
671 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
672 TYERR("can't convert to integer");
673 if (mp_tolong_checked(x, &l)) goto end;
674 rc = PyInt_FromLong(l);
675end:
676 mp_drop(x);
677 return (rc);
678}
679
680static PyObject *gemeth_toint(PyObject *me, PyObject *arg)
681{
682 mp *x;
683
684 if (!PyArg_ParseTuple(arg, ":toint")) goto end;
685 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
686 TYERR("can't convert to integer");
687 return (mp_pywrap(x));
688end:
689 return (0);
690}
691
692static PyObject *gemeth_toec(PyObject *me, PyObject *arg, PyObject *kw)
693{
694 char *kwlist[] = { "curve", 0 };
695 PyTypeObject *cty = ecpt_pytype;
696 ec p = EC_INIT;
697
698 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O:toec", kwlist,
699 &cty)) goto end;
700 if (!PyType_Check(cty) || !PyType_IsSubtype(cty, ecpt_pytype))
701 TYERR("want subtype of catacomb.ECPt");
702 if (G_TOEC(GE_G(me), &p, GE_X(me)))
703 TYERR("can't convert to ec point");
704 return (ecpt_pywrapout(cty, &p));
705end:
706 return (0);
707}
708
709static PyObject *gemeth_tobuf(PyObject *me, PyObject *arg)
710{
711 buf b;
712 PyObject *rc;
713 size_t n;
714
715 if (!PyArg_ParseTuple(arg, ":tobuf")) return (0);
716 n = GE_G(me)->noctets + 4;
717 rc = bytestring_pywrap(0, n);
718 buf_init(&b, PyString_AS_STRING(rc), n);
719 G_TOBUF(GE_G(me), &b, GE_X(me));
720 assert(BOK(&b));
721 _PyString_Resize(&rc, BLEN(&b));
722 return (rc);
723}
724
725static PyObject *gemeth_toraw(PyObject *me, PyObject *arg)
726{
727 buf b;
728 PyObject *rc;
729 size_t n;
730
731 if (!PyArg_ParseTuple(arg, ":toraw")) return (0);
732 n = GE_G(me)->noctets;
733 rc = bytestring_pywrap(0, n);
734 buf_init(&b, PyString_AS_STRING(rc), n);
735 G_TORAW(GE_G(me), &b, GE_X(me));
736 assert(BOK(&b));
737 _PyString_Resize(&rc, BLEN(&b));
738 return (rc);
739}
740
741static PyObject *gmexp_exp(PyObject *me, void *pp, int n)
742{
743 ge *z = G_CREATE(GROUP_G(me));
744 G_MEXP(GROUP_G(me), z, pp, n);
745 return (ge_pywrap(me, z));
746}
747
748static void gmexp_drop(void *pp)
749{
750 group_expfactor *f = pp;
751 MP_DROP(f->exp);
752}
753
754static PyObject *gmeth_mexp(PyObject *me, PyObject *arg)
755{
756 return (mexp_common(me, arg, sizeof(group_expfactor),
757 gmexp_id, gmexp_fill, gmexp_exp, gmexp_drop));
758}
759
760static PyObject *gmeth_check(PyObject *me, PyObject *arg, PyObject *kw)
761{
762 char *kwlist[] = { "rng", 0 };
763 grand *r = &rand_global;
764 const char *p;
765
766 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:check", kwlist,
767 convgrand, &r))
768 goto end;
769 if ((p = G_CHECK(GROUP_G(me), r)) != 0)
770 VALERR(p);
771 RETURN_OBJ(me);
772end:
773 return (0);
774}
775
776static PyObject *group_pyrichcompare(PyObject *x, PyObject *y, int op)
777{
778 int b = group_samep(GROUP_G(x), GROUP_G(y));
779 switch (op) {
780 case Py_EQ: break;
781 case Py_NE: b = !b;
782 default: TYERR("can't order groups");
783 }
784 return (getbool(b));
785end:
786 return (0);
787}
788
789static PyObject *meth__GE_frombuf(PyObject *me, PyObject *arg)
790{
791 buf b;
792 char *p;
793 int n;
794 group *g;
795 ge *x = 0;
796
797 if (!PyArg_ParseTuple(arg, "Os#:frombuf", &me, &p, &n))
798 return (0);
799 g = GROUP_G(me);
800 buf_init(&b, p, n);
801 x = G_CREATE(g);
802 if (G_FROMBUF(g, &b, x))
803 VALERR("invalid data");
804 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
805end:
806 if (x) G_DESTROY(g, x);
807 return (0);
808}
809
810static PyObject *meth__GE_fromraw(PyObject *me, PyObject *arg)
811{
812 buf b;
813 char *p;
814 int n;
815 group *g;
816 ge *x = 0;
817
818 if (!PyArg_ParseTuple(arg, "Os#:fromraw", &me, &p, &n))
819 return (0);
820 g = GROUP_G(me);
821 buf_init(&b, p, n);
822 x = G_CREATE(g);
823 if (G_FROMRAW(g, &b, x))
824 VALERR("invalid data");
825 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
826end:
827 if (x) G_DESTROY(g, x);
828 return (0);
829}
830
831static PyObject *meth__GE_fromstring(PyObject *me, PyObject *arg)
832{
833 mptext_stringctx sc;
834 char *p;
835 int n;
836 group *g;
837 ge *x = 0;
838
839 if (!PyArg_ParseTuple(arg, "Os#:fromstring", &me, &p, &n))
840 return (0);
841 sc.buf = p;
842 sc.lim = sc.buf + n;
843 g = GROUP_G(me);
844 x = G_CREATE(g);
845 if (G_READ(g, x, &mptext_stringops, &sc))
846 SYNERR("bad group element string");
847 return (Py_BuildValue("(Ns#)", ge_pywrap(me, x),
848 sc.buf, (int)(sc.lim - sc.buf)));
849end:
850 if (x) G_DESTROY(g, x);
851 return (0);
852}
853
854static PyObject *meth__Group_parse(PyObject *me, PyObject *arg)
855{
856 char *p;
857 qd_parse qd;
858 group *g;
859
860 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p))
861 goto end;
862 qd.p = p;
863 qd.e = 0;
864 if ((g = group_parse(&qd)) == 0)
865 SYNERR(qd.e);
866 return (group_pywrap(g));
867end:
868 return (0);
869}
870
871static PyObject *geget_group(PyObject *me, void *hunoz)
872 { RETURN_OBJ(GE_GOBJ(me)); }
873
874static PyObject *gget_nbits(PyObject *me, void *hunoz)
875 { return (PyInt_FromLong(GROUP_G(me)->nbits)); }
876
877static PyObject *gget_noctets(PyObject *me, void *hunoz)
878 { return (PyInt_FromLong(GROUP_G(me)->noctets)); }
879
880static PyObject *gget_i(PyObject *me, void *hunoz)
881{
882 group *g = GROUP_G(me); ge *x = G_CREATE(g);
883 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
884}
885
886static PyObject *gget_g(PyObject *me, void *hunoz)
887{
888 group *g = GROUP_G(me); ge *x = G_CREATE(g);
889 G_COPY(g, x, g->g); return (ge_pywrap(me, x));
890}
891
892static PyObject *gget_r(PyObject *me, void *hunoz)
893 { return (mp_pywrap(MP_COPY(GROUP_G(me)->r))); }
894
895static PyObject *gget_h(PyObject *me, void *hunoz)
896 { return (mp_pywrap(MP_COPY(GROUP_G(me)->h))); }
897
898static PyGetSetDef ge_pygetset[] = {
899#define GETSETNAME(op, name) ge##op##_##name
900 GET (group, "X.group -> group containing X")
901#undef GETSETNAME
902 { 0 }
903};
904
905static PyMethodDef ge_pymethods[] = {
906#define METHNAME(name) gemeth_##name
907 METH (inv, "X.inv() -> inverse element of X")
908 METH (sqr, "X.sqr() -> X^2 = X * X")
909 METH (check, "X.check() -> check X really belongs to its group")
910 METH (toint, "X.toint() -> X converted to an integer")
911 KWMETH(toec, "\
912X.toec(curve = ecpt) -> X converted to elliptic curve point")
913 METH (tobuf, "X.tobuf() -> X in buffer representation")
914 METH (toraw, "X.toraw() -> X in raw representation")
915#undef METHNAME
916 { 0 }
917};
918
919static PyNumberMethods ge_pynumber = {
920 0, /* @nb_add@ */
921 0, /* @nb_subtract@ */
922 ge_pymul, /* @nb_multiply@ */
923 ge_pydiv, /* @nb_divide@ */
924 0, /* @nb_remainder@ */
925 0, /* @nb_divmod@ */
926 ge_pyexp, /* @nb_power@ */
927 0, /* @nb_negative@ */
928 0, /* @nb_positive@ */
929 0, /* @nb_absolute@ */
930 ge_pynonzerop, /* @nb_nonzero@ */
931 0, /* @nb_invert@ */
932 0, /* @nb_lshift@ */
933 0, /* @nb_rshift@ */
934 0, /* @nb_and@ */
935 0, /* @nb_xor@ */
936 0, /* @nb_or@ */
937 0, /* @nb_coerce@ */
938 ge_pyint, /* @nb_int@ */
939 ge_pylong, /* @nb_long@ */
940 0 /* meaningless */, /* @nb_float@ */
941 0, /* @nb_oct@ */
942 0, /* @nb_hex@ */
943
944 0, /* @nb_inplace_add@ */
945 0, /* @nb_inplace_subtract@ */
946 0, /* @nb_inplace_multiply@ */
947 0, /* @nb_inplace_divide@ */
948 0, /* @nb_inplace_remainder@ */
949 0, /* @nb_inplace_power@ */
950 0, /* @nb_inplace_lshift@ */
951 0, /* @nb_inplace_rshift@ */
952 0, /* @nb_inplace_and@ */
953 0, /* @nb_inplace_xor@ */
954 0, /* @nb_inplace_or@ */
955
956 0, /* @nb_floor_divide@ */
957 ge_pydiv, /* @nb_true_divide@ */
958 0, /* @nb_inplace_floor_divide@ */
959 0, /* @nb_inplace_true_divide@ */
960};
961
962static PyTypeObject ge_pytype_skel = {
963 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
964 "catacomb.GE", /* @tp_name@ */
965 sizeof(ge_pyobj), /* @tp_basicsize@ */
966 0, /* @tp_itemsize@ */
967
968 ge_pydealloc, /* @tp_dealloc@ */
969 0, /* @tp_print@ */
970 0, /* @tp_getattr@ */
971 0, /* @tp_setattr@ */
972 0, /* @tp_compare@ */
973 0, /* @tp_repr@ */
974 &ge_pynumber, /* @tp_as_number@ */
975 0, /* @tp_as_sequence@ */
976 0, /* @tp_as_mapping@ */
977 0, /* @tp_hash@ */
978 0, /* @tp_call@ */
979 ge_pystr, /* @tp_str@ */
980 0, /* @tp_getattro@ */
981 0, /* @tp_setattro@ */
982 0, /* @tp_as_buffer@ */
983 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
984 Py_TPFLAGS_CHECKTYPES |
985 Py_TPFLAGS_BASETYPE,
986
987 /* @tp_doc@ */
988"Group elements, abstract base class.",
989
990 0, /* @tp_traverse@ */
991 0, /* @tp_clear@ */
992 ge_pyrichcompare, /* @tp_richcompare@ */
993 0, /* @tp_weaklistoffset@ */
994 0, /* @tp_iter@ */
995 0, /* @tp_iternexr@ */
996 ge_pymethods, /* @tp_methods@ */
997 0, /* @tp_members@ */
998 ge_pygetset, /* @tp_getset@ */
999 0, /* @tp_base@ */
1000 0, /* @tp_dict@ */
1001 0, /* @tp_descr_get@ */
1002 0, /* @tp_descr_set@ */
1003 0, /* @tp_dictoffset@ */
1004 0, /* @tp_init@ */
1005 PyType_GenericAlloc, /* @tp_alloc@ */
1006 abstract_pynew, /* @tp_new@ */
3aa33042 1007 0, /* @tp_free@ */
d7ab1bab 1008 0 /* @tp_is_gc@ */
1009};
1010
1011static PyGetSetDef group_pygetset[] = {
1012#define GETSETNAME(op, name) g##op##_##name
1013 GET (noctets, "G.noctets -> size in octets of element")
1014 GET (nbits, "G.nbits -> size in bits of element")
1015 GET (i, "G.i -> group identity")
1016 GET (g, "G.g -> group generator")
1017 GET (r, "G.r -> group order")
1018 GET (h, "G.h -> group cofactor")
1019#undef GETSETNAME
1020 { 0 }
1021};
1022
1023static PyMethodDef group_pymethods[] = {
1024#define METHNAME(name) gmeth_##name
1025 METH (mexp, "\
1026G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1027 KWMETH(check, "G.check(rand = random): check group is good")
1028#undef METHNAME
1029 { 0 }
1030};
1031
1032static PyTypeObject group_pytype_skel = {
1033 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
1034 "catacomb.Group", /* @tp_name@ */
1035 sizeof(group_pyobj), /* @tp_basicsize@ */
1036 0, /* @tp_itemsize@ */
1037
1038 group_pydealloc, /* @tp_dealloc@ */
1039 0, /* @tp_print@ */
1040 0, /* @tp_getattr@ */
1041 0, /* @tp_setattr@ */
1042 0, /* @tp_compare@ */
1043 0, /* @tp_repr@ */
1044 0, /* @tp_as_number@ */
1045 0, /* @tp_as_sequence@ */
1046 0, /* @tp_as_mapping@ */
1047 0, /* @tp_hash@ */
1048 0, /* @tp_call@ */
1049 0, /* @tp_str@ */
1050 0, /* @tp_getattro@ */
1051 0, /* @tp_setattro@ */
1052 0, /* @tp_as_buffer@ */
1053 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1054 Py_TPFLAGS_BASETYPE,
1055
1056 /* @tp_doc@ */
1057"Abstract base class for groups.",
1058
1059 0, /* @tp_traverse@ */
1060 0, /* @tp_clear@ */
1061 group_pyrichcompare, /* @tp_richcompare@ */
1062 0, /* @tp_weaklistoffset@ */
1063 0, /* @tp_iter@ */
1064 0, /* @tp_iternexr@ */
1065 group_pymethods, /* @tp_methods@ */
1066 0, /* @tp_members@ */
1067 group_pygetset, /* @tp_getset@ */
1068 0, /* @tp_base@ */
1069 0, /* @tp_dict@ */
1070 0, /* @tp_descr_get@ */
1071 0, /* @tp_descr_set@ */
1072 0, /* @tp_dictoffset@ */
1073 0, /* @tp_init@ */
1074 PyType_GenericAlloc, /* @tp_alloc@ */
1075 abstract_pynew, /* @tp_new@ */
3aa33042 1076 0, /* @tp_free@ */
d7ab1bab 1077 0 /* @tp_is_gc@ */
1078};
1079
1080static PyObject *pgget_info(PyObject *me, void *hunoz)
1081{
1082 gprime_param dp;
1083 gctx_prime *gg = (gctx_prime *)GROUP_G(me);
1084 dp.p = MP_COPY(gg->mm.m);
1085 dp.q = MP_COPY(gg->g.r);
1086 dp.g = mpmont_reduce(&gg->mm, MP_NEW, gg->gen);
1087 return (fginfo_pywrap(&dp, dhinfo_pytype));
1088}
1089
1090static PyGetSetDef primegroup_pygetset[] = {
1091#define GETSETNAME(op, name) pg##op##_##name
1092 GET (info, "G.info -> information about the group")
1093#undef GETSETNAME
1094 { 0 }
1095};
1096
1097static PyObject *primegroup_pynew(PyTypeObject *ty,
1098 PyObject *arg, PyObject *kw)
1099{
1100 PyObject *i;
1101 char *kwlist[] = { "info", 0 };
1102
1103 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", kwlist,
1104 dhinfo_pytype, &i))
1105 return (0);
1106 return (group_dopywrap(ty, group_prime(FGINFO_DP(i))));
1107}
1108
1109static PyTypeObject primegroup_pytype_skel = {
1110 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
1111 "catacomb.PrimeGroup", /* @tp_name@ */
1112 sizeof(group_pyobj), /* @tp_basicsize@ */
1113 0, /* @tp_itemsize@ */
1114
1115 group_pydealloc, /* @tp_dealloc@ */
1116 0, /* @tp_print@ */
1117 0, /* @tp_getattr@ */
1118 0, /* @tp_setattr@ */
1119 0, /* @tp_compare@ */
1120 0, /* @tp_repr@ */
1121 0, /* @tp_as_number@ */
1122 0, /* @tp_as_sequence@ */
1123 0, /* @tp_as_mapping@ */
1124 0, /* @tp_hash@ */
1125 0, /* @tp_call@ */
1126 0, /* @tp_str@ */
1127 0, /* @tp_getattro@ */
1128 0, /* @tp_setattro@ */
1129 0, /* @tp_as_buffer@ */
1130 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1131 Py_TPFLAGS_BASETYPE,
1132
1133 /* @tp_doc@ */
1134"Subgroups of prime fields.",
1135
1136 0, /* @tp_traverse@ */
1137 0, /* @tp_clear@ */
1138 0, /* @tp_richcompare@ */
1139 0, /* @tp_weaklistoffset@ */
1140 0, /* @tp_iter@ */
1141 0, /* @tp_iternexr@ */
1142 0, /* @tp_methods@ */
1143 0, /* @tp_members@ */
1144 primegroup_pygetset, /* @tp_getset@ */
1145 0, /* @tp_base@ */
1146 0, /* @tp_dict@ */
1147 0, /* @tp_descr_get@ */
1148 0, /* @tp_descr_set@ */
1149 0, /* @tp_dictoffset@ */
1150 0, /* @tp_init@ */
1151 PyType_GenericAlloc, /* @tp_alloc@ */
1152 primegroup_pynew, /* @tp_new@ */
3aa33042 1153 0, /* @tp_free@ */
d7ab1bab 1154 0 /* @tp_is_gc@ */
1155};
1156
1157static PyObject *bgget_info(PyObject *me, void *hunoz)
1158{
1159 gbin_param dp;
1160 gctx_bin *gg = (gctx_bin *)GROUP_G(me);
1161 dp.p = MP_COPY(gg->r.p);
1162 dp.q = MP_COPY(gg->g.r);
1163 dp.g = MP_COPY(gg->gen);
1164 return (fginfo_pywrap(&dp, bindhinfo_pytype));
1165}
1166
1167static PyGetSetDef bingroup_pygetset[] = {
1168#define GETSETNAME(op, name) bg##op##_##name
1169 GET (info, "G.info -> information about the group")
1170#undef GETSETNAME
1171 { 0 }
1172};
1173
1174static PyObject *bingroup_pynew(PyTypeObject *ty,
1175 PyObject *arg, PyObject *kw)
1176{
1177 PyObject *i;
1178 char *kwlist[] = { "info", 0 };
1179
1180 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", kwlist,
1181 bindhinfo_pytype, &i))
1182 return (0);
1183 return (group_dopywrap(ty, group_binary(FGINFO_DP(i))));
1184}
1185
1186static PyTypeObject bingroup_pytype_skel = {
1187 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
1188 "catacomb.BinGroup", /* @tp_name@ */
1189 sizeof(group_pyobj), /* @tp_basicsize@ */
1190 0, /* @tp_itemsize@ */
1191
1192 group_pydealloc, /* @tp_dealloc@ */
1193 0, /* @tp_print@ */
1194 0, /* @tp_getattr@ */
1195 0, /* @tp_setattr@ */
1196 0, /* @tp_compare@ */
1197 0, /* @tp_repr@ */
1198 0, /* @tp_as_number@ */
1199 0, /* @tp_as_sequence@ */
1200 0, /* @tp_as_mapping@ */
1201 0, /* @tp_hash@ */
1202 0, /* @tp_call@ */
1203 0, /* @tp_str@ */
1204 0, /* @tp_getattro@ */
1205 0, /* @tp_setattro@ */
1206 0, /* @tp_as_buffer@ */
1207 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1208 Py_TPFLAGS_BASETYPE,
1209
1210 /* @tp_doc@ */
1211"Subgroups of binary fields.",
1212
1213 0, /* @tp_traverse@ */
1214 0, /* @tp_clear@ */
1215 0, /* @tp_richcompare@ */
1216 0, /* @tp_weaklistoffset@ */
1217 0, /* @tp_iter@ */
1218 0, /* @tp_iternexr@ */
1219 0, /* @tp_methods@ */
1220 0, /* @tp_members@ */
1221 bingroup_pygetset, /* @tp_getset@ */
1222 0, /* @tp_base@ */
1223 0, /* @tp_dict@ */
1224 0, /* @tp_descr_get@ */
1225 0, /* @tp_descr_set@ */
1226 0, /* @tp_dictoffset@ */
1227 0, /* @tp_init@ */
1228 PyType_GenericAlloc, /* @tp_alloc@ */
1229 bingroup_pynew, /* @tp_new@ */
3aa33042 1230 0, /* @tp_free@ */
d7ab1bab 1231 0 /* @tp_is_gc@ */
1232};
1233
1234static PyObject *egget_info(PyObject *me, void *hunoz)
1235{
1236 ec_info ei;
1237 gctx_ec *gg = (gctx_ec *)GROUP_G(me);
1238
1239 ecinfo_copy(&ei, &gg->ei);
1240 return (ecinfo_pywrap(&ei));
1241}
1242
1243static PyGetSetDef ecgroup_pygetset[] = {
1244#define GETSETNAME(op, name) eg##op##_##name
1245 GET (info, "G.info -> information about the group")
1246#undef GETSETNAME
1247 { 0 }
1248};
1249
1250static PyObject *ecgroup_pynew(PyTypeObject *ty,
1251 PyObject *arg, PyObject *kw)
1252{
1253 PyObject *i;
1254 ec_info ei;
1255 char *kwlist[] = { "info", 0 };
1256
1257 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", kwlist,
1258 ecinfo_pytype, &i))
1259 return (0);
1260 ecinfo_copy(&ei, ECINFO_EI(i));
1261 return (group_dopywrap(ty, group_ec(&ei)));
1262}
1263
1264static PyTypeObject ecgroup_pytype_skel = {
1265 PyObject_HEAD_INIT(&PyType_Type) 0, /* Header */
1266 "catacomb.ECGroup", /* @tp_name@ */
1267 sizeof(group_pyobj), /* @tp_basicsize@ */
1268 0, /* @tp_itemsize@ */
1269
1270 group_pydealloc, /* @tp_dealloc@ */
1271 0, /* @tp_print@ */
1272 0, /* @tp_getattr@ */
1273 0, /* @tp_setattr@ */
1274 0, /* @tp_compare@ */
1275 0, /* @tp_repr@ */
1276 0, /* @tp_as_number@ */
1277 0, /* @tp_as_sequence@ */
1278 0, /* @tp_as_mapping@ */
1279 0, /* @tp_hash@ */
1280 0, /* @tp_call@ */
1281 0, /* @tp_str@ */
1282 0, /* @tp_getattro@ */
1283 0, /* @tp_setattro@ */
1284 0, /* @tp_as_buffer@ */
1285 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1286 Py_TPFLAGS_BASETYPE,
1287
1288 /* @tp_doc@ */
1289"Elliptic curve groups.",
1290
1291 0, /* @tp_traverse@ */
1292 0, /* @tp_clear@ */
1293 0, /* @tp_richcompare@ */
1294 0, /* @tp_weaklistoffset@ */
1295 0, /* @tp_iter@ */
1296 0, /* @tp_iternexr@ */
1297 0, /* @tp_methods@ */
1298 0, /* @tp_members@ */
1299 ecgroup_pygetset, /* @tp_getset@ */
1300 0, /* @tp_base@ */
1301 0, /* @tp_dict@ */
1302 0, /* @tp_descr_get@ */
1303 0, /* @tp_descr_set@ */
1304 0, /* @tp_dictoffset@ */
1305 0, /* @tp_init@ */
1306 PyType_GenericAlloc, /* @tp_alloc@ */
1307 ecgroup_pynew, /* @tp_new@ */
3aa33042 1308 0, /* @tp_free@ */
d7ab1bab 1309 0 /* @tp_is_gc@ */
1310};
1311
1312/*----- Global stuff ------------------------------------------------------*/
1313
1314static PyMethodDef methods[] = {
1315#define METHNAME(name) meth_##name
1316 METH (_GE_frombuf, "frombuf(BUF) -> X, REST")
1317 METH (_GE_fromraw, "fromraw(BUF) -> X, REST")
1318 METH (_GE_fromstring, "fromstring(STR) -> X, REST")
1319 METH (_Group_parse, "parse(STR) -> G, REST")
1320 METH (_DHInfo_parse, "parse(STR) -> D, REST")
1321 METH (_BinDHInfo_parse, "parse(STR) -> D, REST")
1322 METH (_DHInfo__groupn, 0)
1323 METH (_BinDHInfo__groupn, 0)
1324 KWMETH(_DHInfo_generate, "\
5d00a630 1325generate(PBITS, [qbits = 0, event = pgen_nullev,\n\
d7ab1bab 1326 rng = rand, nsteps = 0]) -> D")
1327 KWMETH(_DHInfo_genlimlee, "\
1328genlimlee(PBITS, QBITS, [event = pgen_nullev, ievent = pgen_nullev,\n\
1329 rng = rand, nsteps = 0, subgroupp = True]) -> (D, [Q, ...])")
1330 KWMETH(_DHInfo_gendsa, "\
1331gendsa(PBITS, QBITS, SEED, [event = pgen_nullev, nsteps = 0])\n\
1332 -> (D, SEED, COUNT)")
1333#undef METHNAME
1334 { 0 }
1335};
1336
1337void group_pyinit(void)
1338{
1339 INITTYPE(fginfo, root);
1340 INITTYPE(dhinfo, fginfo);
1341 INITTYPE(bindhinfo, dhinfo);
1342 INITTYPE(ge, root);
1343 INITTYPE(group, type);
1344 INITTYPE(primegroup, group);
1345 INITTYPE(bingroup, group);
1346 INITTYPE(ecgroup, group);
1347 addmethods(methods);
1348}
1349
1350void group_pyinsert(PyObject *mod)
1351{
1352 INSERT("FGInfo", fginfo_pytype);
1353 INSERT("DHInfo", dhinfo_pytype);
1354 INSERT("BinDHInfo", bindhinfo_pytype);
1355 INSERT("GE", ge_pytype);
1356 INSERT("Group", group_pytype);
1357 INSERT("PrimeGroup", primegroup_pytype);
1358 INSERT("BinGroup", bingroup_pytype);
1359 INSERT("ECGroup", ecgroup_pytype);
1360 INSERT("_pgroups", namedgroups(ptab, &npgroups));
1361 INSERT("_bingroups", namedgroups(bintab, &nbingroups));
1362}
1363
1364/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings