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catacomb-python.h, *.c: Move definitions back into implementation files.
[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 *meth__DHInfo_generate(PyObject *me,
98 PyObject *arg, PyObject *kw)
99 {
100 dh_param dp;
101 unsigned ql = 0, pl;
102 unsigned steps = 0;
103 grand *r = &rand_global;
104 struct excinfo exc = EXCINFO_INIT;
105 pypgev evt = { { 0 } };
106 static const char *const kwlist[] =
107 { "class", "pbits", "qbits", "event", "rng", "nsteps", 0 };
108 PyObject *rc = 0;
109
110 evt.exc = &exc;
111 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", KWLIST,
112 &me, convuint, &pl, convuint, &ql,
113 convpgev, &evt, convgrand, &r,
114 convuint, &steps))
115 goto end;
116 if (dh_gen(&dp, ql, pl, steps, r, evt.ev.proc, evt.ev.ctx))
117 PGENERR(&exc);
118 rc = fginfo_pywrap(&dp, dhinfo_pytype);
119 end:
120 droppgev(&evt);
121 return (rc);
122 }
123
124 static PyObject *meth__DHInfo_genlimlee(PyObject *me,
125 PyObject *arg, PyObject *kw)
126 {
127 dh_param dp;
128 unsigned ql, pl;
129 unsigned steps = 0;
130 grand *r = &rand_global;
131 struct excinfo exc = EXCINFO_INIT;
132 pypgev oe = { { 0 } }, ie = { { 0 } };
133 int subgroupp = 1;
134 unsigned f = 0;
135 static const char *const kwlist[] = {
136 "class", "pbits", "qbits", "event", "ievent",
137 "rng", "nsteps", "subgroupp", 0
138 };
139 size_t i, nf;
140 mp **v = 0;
141 PyObject *rc = 0, *vec = 0;
142
143 oe.exc = ie.exc = &exc;
144 if (!PyArg_ParseTupleAndKeywords(arg, kw,
145 "OO&O&|O&O&O&O&O&:genlimlee", KWLIST,
146 &me, convuint, &pl, convuint, &ql,
147 convpgev, &oe, convpgev, &ie,
148 convgrand, &r, convuint, &steps,
149 convbool, &subgroupp))
150 goto end;
151 if (subgroupp) f |= DH_SUBGROUP;
152 if (dh_limlee(&dp, ql, pl, f, steps, r,
153 oe.ev.proc, oe.ev.ctx, ie.ev.proc, ie.ev.ctx, &nf, &v))
154 PGENERR(&exc);
155 vec = PyList_New(nf);
156 for (i = 0; i < nf; i++)
157 PyList_SetItem(vec, i, mp_pywrap(v[i]));
158 xfree(v);
159 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype), vec);
160 end:
161 droppgev(&oe); droppgev(&ie);
162 return (rc);
163 }
164
165 static PyObject *meth__DHInfo_genkcdsa(PyObject *me,
166 PyObject *arg, PyObject *kw)
167 {
168 dh_param dp;
169 unsigned ql, pl;
170 unsigned steps = 0;
171 grand *r = &rand_global;
172 struct excinfo exc = EXCINFO_INIT;
173 pypgev evt = { { 0 } };
174 static const char *const kwlist[] =
175 { "class", "pbits", "qbits", "event", "rng", "nsteps", 0 };
176 mp *v = MP_NEW;
177 PyObject *rc = 0;
178
179 evt.exc = &exc;
180 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&O&|O&O&O&:genkcdsa", KWLIST,
181 &me, convuint, &pl, convuint, &ql,
182 convpgev, &evt, convgrand, &r,
183 convuint, &steps))
184 goto end;
185 if (dh_kcdsagen(&dp, ql, pl, 0, steps, r, evt.ev.proc, evt.ev.ctx))
186 PGENERR(&exc);
187 mp_div(&v, 0, dp.p, dp.q);
188 v = mp_lsr(v, v, 1);
189 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype),
190 mp_pywrap(v));
191 end:
192 droppgev(&evt);
193 return (rc);
194 }
195
196 static PyObject *meth__DHInfo_gendsa(PyObject *me,
197 PyObject *arg, PyObject *kw)
198 {
199 dsa_param dp;
200 unsigned ql, pl;
201 unsigned steps = 0;
202 dsa_seed ds;
203 char *k;
204 Py_ssize_t ksz;
205 struct excinfo exc = EXCINFO_INIT;
206 pypgev evt = { { 0 } };
207 static const char *const kwlist[] =
208 { "class", "pbits", "qbits", "seed", "event", "nsteps", 0 };
209 PyObject *rc = 0;
210
211 evt.exc = &exc;
212 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&O&s#|O&O&:gendsa", KWLIST,
213 &me, convuint, &pl, convuint, &ql,
214 &k, &ksz, convpgev, &evt,
215 convuint, &steps))
216 goto end;
217 if (dsa_gen(&dp, ql, pl, steps, k, ksz, &ds, evt.ev.proc, evt.ev.ctx))
218 PGENERR(&exc);
219 rc = Py_BuildValue("(NNl)", fginfo_pywrap(&dp, dhinfo_pytype),
220 bytestring_pywrap(ds.p, ds.sz), (long)ds.count);
221 xfree(ds.p);
222 end:
223 droppgev(&evt);
224 return (rc);
225 }
226
227 static int npgroups = -1, nbingroups = -1;
228
229 static PyObject *namedgroups(const pentry *pp, int *ne)
230 {
231 int i, j;
232 const char *p;
233 PyObject *d, *c;
234
235 d = PyDict_New();
236 for (i = 0; pp[i].name; i++) {
237 p = pp[i].name;
238 for (j = 0; j < i; j++) {
239 if (pp[i].data == pp[j].data) {
240 c = PyDict_GetItemString(d, (/*unconst*/ char *)pp[j].name);
241 Py_INCREF(c);
242 goto found;
243 }
244 }
245 c = PyInt_FromLong(i);
246 found:
247 PyDict_SetItemString(d, (/*unconst*/ char *)p, c);
248 Py_DECREF(c);
249 }
250 *ne = i;
251 return (d);
252 }
253
254 static PyObject *meth__groupn(PyObject *me, PyObject *arg,
255 PyTypeObject *ty, const pentry *pp, int ne)
256 {
257 int i;
258 gprime_param gp;
259 PyObject *rc = 0;
260
261 if (!PyArg_ParseTuple(arg, "Oi:_groupn", &me, &i)) goto end;
262 if (i < 0 || i >= ne) VALERR("group index out of range");
263 dh_infofromdata(&gp, pp[i].data);
264 rc = fginfo_pywrap(&gp, ty);
265 end:
266 return (rc);
267 }
268
269 static PyObject *meth__DHInfo__groupn(PyObject *me, PyObject *arg)
270 { return (meth__groupn(me, arg, dhinfo_pytype, ptab, npgroups)); }
271
272 static PyObject *meth__BinDHInfo__groupn(PyObject *me, PyObject *arg)
273 { return (meth__groupn(me, arg, bindhinfo_pytype, bintab, nbingroups)); }
274
275 static PyObject *meth__parse(PyObject *me, PyObject *arg, PyTypeObject *ty,
276 int (*parse)(qd_parse *, gprime_param *))
277 {
278 qd_parse qd;
279 char *p;
280 gprime_param gp;
281 PyObject *rc = 0;
282
283 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p)) goto end;
284 qd.p = p;
285 qd.e = 0;
286 if (parse(&qd, &gp)) VALERR(qd.e);
287 rc = fginfo_pywrap(&gp, ty);
288 end:
289 return (rc);
290 }
291
292 static PyObject *meth__DHInfo_parse(PyObject *me, PyObject *arg)
293 { return (meth__parse(me, arg, dhinfo_pytype, dh_parse)); }
294
295 static PyObject *meth__BinDHInfo_parse(PyObject *me, PyObject *arg)
296 { return (meth__parse(me, arg, bindhinfo_pytype, dhbin_parse)); }
297
298 static PyGetSetDef fginfo_pygetset[] = {
299 #define GETSETNAME(op, name) fi##op##_##name
300 GET (r, "I.r -> group order")
301 #undef GETSETNAME
302 { 0 }
303 };
304
305 static PyGetSetDef dhinfo_pygetset[] = {
306 #define GETSETNAME(op, name) di##op##_##name
307 GET (p, "I.p -> prime")
308 GET (g, "I.g -> generator")
309 #undef GETSETNAME
310 { 0 }
311 };
312
313 static PyGetSetDef bindhinfo_pygetset[] = {
314 #define GETSETNAME(op, name) bi##op##_##name
315 GET (p, "I.p -> irreducible polynomial")
316 GET (m, "I.m -> degree of polynomial")
317 GET (g, "I.g -> generator")
318 #undef GETSETNAME
319 { 0 }
320 };
321
322 static PyTypeObject fginfo_pytype_skel = {
323 PyObject_HEAD_INIT(0) 0, /* Header */
324 "FGInfo", /* @tp_name@ */
325 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
326 0, /* @tp_itemsize@ */
327
328 fginfo_pydealloc, /* @tp_dealloc@ */
329 0, /* @tp_print@ */
330 0, /* @tp_getattr@ */
331 0, /* @tp_setattr@ */
332 0, /* @tp_compare@ */
333 0, /* @tp_repr@ */
334 0, /* @tp_as_number@ */
335 0, /* @tp_as_sequence@ */
336 0, /* @tp_as_mapping@ */
337 0, /* @tp_hash@ */
338 0, /* @tp_call@ */
339 0, /* @tp_str@ */
340 0, /* @tp_getattro@ */
341 0, /* @tp_setattro@ */
342 0, /* @tp_as_buffer@ */
343 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
344 Py_TPFLAGS_BASETYPE,
345
346 /* @tp_doc@ */
347 "Abstract base class for field-group information objects.",
348
349 0, /* @tp_traverse@ */
350 0, /* @tp_clear@ */
351 0, /* @tp_richcompare@ */
352 0, /* @tp_weaklistoffset@ */
353 0, /* @tp_iter@ */
354 0, /* @tp_iternext@ */
355 0, /* @tp_methods@ */
356 0, /* @tp_members@ */
357 fginfo_pygetset, /* @tp_getset@ */
358 0, /* @tp_base@ */
359 0, /* @tp_dict@ */
360 0, /* @tp_descr_get@ */
361 0, /* @tp_descr_set@ */
362 0, /* @tp_dictoffset@ */
363 0, /* @tp_init@ */
364 PyType_GenericAlloc, /* @tp_alloc@ */
365 abstract_pynew, /* @tp_new@ */
366 0, /* @tp_free@ */
367 0 /* @tp_is_gc@ */
368 };
369
370 static PyTypeObject dhinfo_pytype_skel = {
371 PyObject_HEAD_INIT(0) 0, /* Header */
372 "DHInfo", /* @tp_name@ */
373 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
374 0, /* @tp_itemsize@ */
375
376 fginfo_pydealloc, /* @tp_dealloc@ */
377 0, /* @tp_print@ */
378 0, /* @tp_getattr@ */
379 0, /* @tp_setattr@ */
380 0, /* @tp_compare@ */
381 0, /* @tp_repr@ */
382 0, /* @tp_as_number@ */
383 0, /* @tp_as_sequence@ */
384 0, /* @tp_as_mapping@ */
385 0, /* @tp_hash@ */
386 0, /* @tp_call@ */
387 0, /* @tp_str@ */
388 0, /* @tp_getattro@ */
389 0, /* @tp_setattro@ */
390 0, /* @tp_as_buffer@ */
391 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
392 Py_TPFLAGS_BASETYPE,
393
394 /* @tp_doc@ */
395 "DHInfo(P, R, G): standard (integer) Diffie-Hellman group information.",
396
397 0, /* @tp_traverse@ */
398 0, /* @tp_clear@ */
399 0, /* @tp_richcompare@ */
400 0, /* @tp_weaklistoffset@ */
401 0, /* @tp_iter@ */
402 0, /* @tp_iternext@ */
403 0, /* @tp_methods@ */
404 0, /* @tp_members@ */
405 dhinfo_pygetset, /* @tp_getset@ */
406 0, /* @tp_base@ */
407 0, /* @tp_dict@ */
408 0, /* @tp_descr_get@ */
409 0, /* @tp_descr_set@ */
410 0, /* @tp_dictoffset@ */
411 0, /* @tp_init@ */
412 PyType_GenericAlloc, /* @tp_alloc@ */
413 fginfo_pynew, /* @tp_new@ */
414 0, /* @tp_free@ */
415 0 /* @tp_is_gc@ */
416 };
417
418 static PyTypeObject bindhinfo_pytype_skel = {
419 PyObject_HEAD_INIT(0) 0, /* Header */
420 "BinDHInfo", /* @tp_name@ */
421 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
422 0, /* @tp_itemsize@ */
423
424 fginfo_pydealloc, /* @tp_dealloc@ */
425 0, /* @tp_print@ */
426 0, /* @tp_getattr@ */
427 0, /* @tp_setattr@ */
428 0, /* @tp_compare@ */
429 0, /* @tp_repr@ */
430 0, /* @tp_as_number@ */
431 0, /* @tp_as_sequence@ */
432 0, /* @tp_as_mapping@ */
433 0, /* @tp_hash@ */
434 0, /* @tp_call@ */
435 0, /* @tp_str@ */
436 0, /* @tp_getattro@ */
437 0, /* @tp_setattro@ */
438 0, /* @tp_as_buffer@ */
439 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
440 Py_TPFLAGS_BASETYPE,
441
442 /* @tp_doc@ */
443 "BinDHInfo(P, R, G): binary-field Diffie-Hellman group information.",
444
445 0, /* @tp_traverse@ */
446 0, /* @tp_clear@ */
447 0, /* @tp_richcompare@ */
448 0, /* @tp_weaklistoffset@ */
449 0, /* @tp_iter@ */
450 0, /* @tp_iternext@ */
451 0, /* @tp_methods@ */
452 0, /* @tp_members@ */
453 bindhinfo_pygetset, /* @tp_getset@ */
454 0, /* @tp_base@ */
455 0, /* @tp_dict@ */
456 0, /* @tp_descr_get@ */
457 0, /* @tp_descr_set@ */
458 0, /* @tp_dictoffset@ */
459 0, /* @tp_init@ */
460 PyType_GenericAlloc, /* @tp_alloc@ */
461 fginfo_pynew, /* @tp_new@ */
462 0, /* @tp_free@ */
463 0 /* @tp_is_gc@ */
464 };
465
466 /*----- General utilities -------------------------------------------------*/
467
468 PyTypeObject *ge_pytype, *group_pytype;
469 static PyTypeObject *primegroup_pytype, *bingroup_pytype, *ecgroup_pytype;
470
471 group *group_copy(group *g)
472 {
473 if (STRCMP(G_NAME(g), ==, "prime")) {
474 gctx_prime *gc = (gctx_prime *)g;
475 gprime_param gp;
476 gp.g = G_TOINT(g, MP_NEW, g->g);
477 gp.p = gc->mm.m;
478 gp.q = gc->g.r;
479 g = group_prime(&gp);
480 MP_DROP(gp.g);
481 } else if (STRCMP(G_NAME(g), ==, "bin")) {
482 gctx_bin *gc = (gctx_bin *)g;
483 gbin_param gb;
484 gb.g = G_TOINT(g, MP_NEW, g->g);
485 gb.p = gc->r.p;
486 gb.q = gc->g.r;
487 g = group_binary(&gb);
488 MP_DROP(gb.g);
489 } else if (STRCMP(G_NAME(g), ==, "ec")) {
490 gctx_ec *gc = (gctx_ec *)g;
491 ec_info ei;
492 if ((ei.c = eccurve_copy(gc->ei.c)) == 0)
493 return (0);
494 EC_CREATE(&ei.g);
495 EC_COPY(&ei.g, &gc->ei.g);
496 ei.r = MP_COPY(gc->ei.r);
497 ei.h = MP_COPY(gc->ei.h);
498 g = group_ec(&ei);
499 } else
500 g = 0;
501 return (g);
502 }
503
504 PyObject *ge_pywrap(PyObject *gobj, ge *x)
505 {
506 ge_pyobj *z = PyObject_New(ge_pyobj, (PyTypeObject *)gobj);
507 z->x = x;
508 z->g = GROUP_G(gobj);
509 Py_INCREF(gobj);
510 return ((PyObject *)z);
511 }
512
513 static PyObject *ge_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
514 {
515 static const char *const kwlist[] = { "x", 0 };
516 PyObject *x;
517 group *g;
518 ec p = EC_INIT;
519 mp *y = 0;
520 ge *xx = 0;
521 mptext_stringctx sc;
522
523 g = GROUP_G(ty);
524 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O:new", KWLIST, &x)) goto end;
525 xx = G_CREATE(g);
526 if (ECPT_PYCHECK(x)) {
527 getecptout(&p, x);
528 if (G_FROMEC(g, xx, &p))
529 TYERR("can't convert from elliptic curve point");
530 EC_DESTROY(&p);
531 } else if ((y = tomp(x)) != 0) {
532 if (G_FROMINT(g, xx, y))
533 TYERR("can't convert from integer");
534 MP_DROP(y);
535 } else if (PyString_Check(x)) {
536 sc.buf = PyString_AS_STRING(x);
537 sc.lim = sc.buf + PyString_GET_SIZE(x);
538 if (G_READ(g, xx, &mptext_stringops, &sc) || sc.buf < sc.lim)
539 VALERR("malformed group element string");
540 } else
541 TYERR("can't convert to group element");
542 return (ge_pywrap((PyObject *)ty, xx));
543 end:
544 mp_drop(y);
545 EC_DESTROY(&p);
546 if (xx) G_DESTROY(g, xx);
547 return (0);
548 }
549
550 static PyObject *group_dopywrap(PyTypeObject *ty, group *g)
551 {
552 group_pyobj *gobj = newtype(ty, 0, g->ops->name);
553 gobj->g = g;
554 gobj->ty.ht_type.tp_basicsize = sizeof(ge_pyobj);
555 gobj->ty.ht_type.tp_base = ge_pytype;
556 Py_INCREF(group_pytype);
557 gobj->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
558 Py_TPFLAGS_BASETYPE |
559 Py_TPFLAGS_CHECKTYPES |
560 Py_TPFLAGS_HEAPTYPE);
561 gobj->ty.ht_type.tp_alloc = PyType_GenericAlloc;
562 gobj->ty.ht_type.tp_free = 0;
563 gobj->ty.ht_type.tp_new = ge_pynew;
564 typeready(&gobj->ty.ht_type);
565 return ((PyObject *)gobj);
566 }
567
568 PyObject *group_pywrap(group *g)
569 {
570 PyTypeObject *ty;
571
572 if (STRCMP(G_NAME(g), ==, "prime")) ty = primegroup_pytype;
573 else if (STRCMP(G_NAME(g), ==, "bin")) ty = bingroup_pytype;
574 else if (STRCMP(G_NAME(g), ==, "ec")) ty = ecgroup_pytype;
575 else abort();
576 return (group_dopywrap(ty, g));
577 }
578
579 /*----- Group elements ----------------------------------------------------*/
580
581 #define BINOP(name) \
582 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
583 { \
584 ge *z; \
585 group *g; \
586 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
587 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
588 RETURN_NOTIMPL; \
589 g = GE_G(x); \
590 z = G_CREATE(g); \
591 g->ops->name(g, z, GE_X(x), GE_X(y)); \
592 return (ge_pywrap(GE_GOBJ(x), z)); \
593 }
594 BINOP(mul)
595 BINOP(div)
596 #undef BINOP
597
598 #define UNOP(name) \
599 static PyObject *gemeth_##name(PyObject *me, PyObject *arg) \
600 { \
601 group *g; \
602 ge *z; \
603 if (!PyArg_ParseTuple(arg, ":" #name)) return (0); \
604 g = GE_G(me); \
605 z = G_CREATE(g); \
606 g->ops->name(g, z, GE_X(me)); \
607 return (ge_pywrap(GE_GOBJ(me), z)); \
608 }
609 UNOP(sqr)
610 UNOP(inv)
611 #undef UNOP
612
613 static PyObject *ge_pyexp(PyObject *x, PyObject *n, PyObject *m)
614 {
615 mp *nn;
616 ge *z;
617
618 if (m != Py_None || !GE_PYCHECK(x) || (nn = getmp(n)) == 0)
619 RETURN_NOTIMPL;
620 z = G_CREATE(GE_G(x));
621 G_EXP(GE_G(x), z, GE_X(x), nn);
622 MP_DROP(nn);
623 return (ge_pywrap(GE_GOBJ(x), z));
624 }
625
626 static void ge_pydealloc(PyObject *me)
627 {
628 G_DESTROY(GE_G(me), GE_X(me));
629 Py_DECREF(GE_GOBJ(me));
630 FREEOBJ(me);
631 }
632
633 static void group_pydealloc(PyObject *me)
634 {
635 G_DESTROYGROUP(GROUP_G(me));
636 PyType_Type.tp_dealloc(me);
637 }
638
639 static PyObject *gmexp_id(PyObject *me)
640 {
641 group *g = GROUP_G(me); ge *x = G_CREATE(g);
642 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
643 }
644
645 static int gmexp_fill(void *pp, PyObject *me, PyObject *x, PyObject *m)
646 {
647 group_expfactor *f = pp;
648
649 if (!GE_PYCHECK(x) || GE_G(x) != GROUP_G(me) || (f->exp = getmp(m)) == 0)
650 return (-1);
651 f->base = GE_X(x);
652 return (0);
653 }
654
655 static PyObject *ge_pyrichcompare(PyObject *x, PyObject *y, int op)
656 {
657 int b;
658 PyObject *rc = 0;
659
660 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) ||
661 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y))))
662 RETURN_NOTIMPL;
663 switch (op) {
664 case Py_EQ: b = G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
665 case Py_NE: b = !G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
666 default: TYERR("group elements are unordered");
667 }
668 rc = getbool(b);
669 end:
670 return (rc);
671 }
672
673 static PyObject *gemeth_check(PyObject *me, PyObject *arg)
674 {
675 if (!PyArg_ParseTuple(arg, ":check")) goto end;
676 if (group_check(GE_G(me), GE_X(me))) VALERR("bad group element");
677 RETURN_OBJ(me);
678 end:
679 return (0);
680 }
681
682 static int ge_pynonzerop(PyObject *x)
683 { return (!G_IDENTP(GE_G(x), GE_X(x))); }
684
685 static PyObject *ge_pystr(PyObject *me)
686 {
687 dstr d = DSTR_INIT;
688 PyObject *rc;
689
690 group_writedstr(GE_G(me), GE_X(me), &d);
691 rc = PyString_FromStringAndSize(d.buf, d.len);
692 DDESTROY(&d);
693 return (rc);
694 }
695
696 static PyObject *ge_pylong(PyObject *me)
697 {
698 mp *x = 0;
699 PyObject *rc = 0;
700
701 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
702 TYERR("can't convert to integer");
703 rc = mp_topylong(x);
704 end:
705 mp_drop(x);
706 return (rc);
707 }
708
709 static PyObject *ge_pyint(PyObject *me)
710 {
711 mp *x = 0;
712 PyObject *rc = 0;
713 long l;
714
715 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
716 TYERR("can't convert to integer");
717 if (!mp_tolong_checked(x, &l, 0)) rc = PyInt_FromLong(l);
718 else rc = mp_topylong(x);
719 end:
720 mp_drop(x);
721 return (rc);
722 }
723
724 static PyObject *gemeth_toint(PyObject *me, PyObject *arg)
725 {
726 mp *x;
727
728 if (!PyArg_ParseTuple(arg, ":toint")) goto end;
729 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
730 TYERR("can't convert to integer");
731 return (mp_pywrap(x));
732 end:
733 return (0);
734 }
735
736 static PyObject *gemeth_toec(PyObject *me, PyObject *arg, PyObject *kw)
737 {
738 static const char *const kwlist[] = { "curve", 0 };
739 PyTypeObject *cty = 0;
740 PyObject *rc = 0;
741 group *g;
742 ec_curve *c;
743 ec p = EC_INIT;
744
745 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O:toec", KWLIST,
746 &cty)) goto end;
747 g = GROUP_G(GE_GOBJ(me));
748 if (cty) {
749 if (!PyType_Check(cty) || !PyType_IsSubtype(cty, ecpt_pytype))
750 TYERR("want subtype of catacomb.ECPt");
751 Py_INCREF((PyObject *)cty);
752 } else if (STRCMP(G_NAME(g), ==, "ec")) {
753 c = eccurve_copy(((gctx_ec *)g)->ei.c);
754 cty = (PyTypeObject *)eccurve_pywrap(0, c);
755 } else {
756 cty = ecpt_pytype;
757 Py_INCREF((PyObject *)cty);
758 }
759 if (G_TOEC(GE_G(me), &p, GE_X(me))) {
760 Py_DECREF((PyObject *)cty);
761 TYERR("can't convert to ec point");
762 }
763 rc = ecpt_pywrapout(cty, &p);
764 Py_DECREF((PyObject *)cty);
765 end:
766 return (rc);
767 }
768
769 static PyObject *gemeth_tobuf(PyObject *me, PyObject *arg)
770 {
771 buf b;
772 PyObject *rc;
773 size_t n;
774
775 if (!PyArg_ParseTuple(arg, ":tobuf")) return (0);
776 n = GE_G(me)->noctets + 4;
777 rc = bytestring_pywrap(0, n);
778 buf_init(&b, PyString_AS_STRING(rc), n);
779 G_TOBUF(GE_G(me), &b, GE_X(me));
780 assert(BOK(&b));
781 _PyString_Resize(&rc, BLEN(&b));
782 return (rc);
783 }
784
785 static PyObject *gemeth_toraw(PyObject *me, PyObject *arg)
786 {
787 buf b;
788 PyObject *rc;
789 size_t n;
790
791 if (!PyArg_ParseTuple(arg, ":toraw")) return (0);
792 n = GE_G(me)->noctets;
793 rc = bytestring_pywrap(0, n);
794 buf_init(&b, PyString_AS_STRING(rc), n);
795 G_TORAW(GE_G(me), &b, GE_X(me));
796 assert(BOK(&b));
797 _PyString_Resize(&rc, BLEN(&b));
798 return (rc);
799 }
800
801 static PyObject *gmexp_exp(PyObject *me, void *pp, int n)
802 {
803 ge *z = G_CREATE(GROUP_G(me));
804 G_MEXP(GROUP_G(me), z, pp, n);
805 return (ge_pywrap(me, z));
806 }
807
808 static void gmexp_drop(void *pp)
809 {
810 group_expfactor *f = pp;
811 MP_DROP(f->exp);
812 }
813
814 static PyObject *gmeth_mexp(PyObject *me, PyObject *arg)
815 {
816 return (mexp_common(me, arg, sizeof(group_expfactor),
817 gmexp_id, gmexp_fill, gmexp_exp, gmexp_drop));
818 }
819
820 static PyObject *gmeth_checkgroup(PyObject *me, PyObject *arg, PyObject *kw)
821 {
822 static const char *const kwlist[] = { "rng", 0 };
823 grand *r = &rand_global;
824 const char *p;
825
826 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:checkgroup", KWLIST,
827 convgrand, &r))
828 goto end;
829 if ((p = G_CHECK(GROUP_G(me), r)) != 0)
830 VALERR(p);
831 RETURN_OBJ(me);
832 end:
833 return (0);
834 }
835
836 static PyObject *group_pyrichcompare(PyObject *x, PyObject *y, int op)
837 {
838 int b = group_samep(GROUP_G(x), GROUP_G(y));
839 switch (op) {
840 case Py_EQ: break;
841 case Py_NE: b = !b;
842 default: TYERR("can't order groups");
843 }
844 return (getbool(b));
845 end:
846 return (0);
847 }
848
849 static PyObject *meth__GE_frombuf(PyObject *me, PyObject *arg)
850 {
851 buf b;
852 char *p;
853 Py_ssize_t n;
854 group *g;
855 ge *x = 0;
856
857 if (!PyArg_ParseTuple(arg, "Os#:frombuf", &me, &p, &n))
858 return (0);
859 g = GROUP_G(me);
860 buf_init(&b, p, n);
861 x = G_CREATE(g);
862 if (G_FROMBUF(g, &b, x))
863 VALERR("invalid data");
864 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
865 end:
866 if (x) G_DESTROY(g, x);
867 return (0);
868 }
869
870 static PyObject *meth__GE_fromraw(PyObject *me, PyObject *arg)
871 {
872 buf b;
873 char *p;
874 Py_ssize_t n;
875 group *g;
876 ge *x = 0;
877
878 if (!PyArg_ParseTuple(arg, "Os#:fromraw", &me, &p, &n))
879 return (0);
880 g = GROUP_G(me);
881 buf_init(&b, p, n);
882 x = G_CREATE(g);
883 if (G_FROMRAW(g, &b, x))
884 VALERR("invalid data");
885 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
886 end:
887 if (x) G_DESTROY(g, x);
888 return (0);
889 }
890
891 static PyObject *meth__GE_fromstring(PyObject *me, PyObject *arg)
892 {
893 mptext_stringctx sc;
894 char *p;
895 Py_ssize_t n;
896 group *g;
897 ge *x = 0;
898
899 if (!PyArg_ParseTuple(arg, "Os#:fromstring", &me, &p, &n))
900 return (0);
901 sc.buf = p;
902 sc.lim = sc.buf + n;
903 g = GROUP_G(me);
904 x = G_CREATE(g);
905 if (G_READ(g, x, &mptext_stringops, &sc))
906 VALERR("bad group element string");
907 return (Py_BuildValue("(Ns#)", ge_pywrap(me, x),
908 sc.buf, (Py_ssize_t)(sc.lim - sc.buf)));
909 end:
910 if (x) G_DESTROY(g, x);
911 return (0);
912 }
913
914 static PyObject *meth__Group_parse(PyObject *me, PyObject *arg)
915 {
916 char *p;
917 qd_parse qd;
918 group *g;
919
920 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p))
921 goto end;
922 qd.p = p;
923 qd.e = 0;
924 if ((g = group_parse(&qd)) == 0)
925 VALERR(qd.e);
926 return (group_pywrap(g));
927 end:
928 return (0);
929 }
930
931 static PyObject *geget_group(PyObject *me, void *hunoz)
932 { RETURN_OBJ(GE_GOBJ(me)); }
933
934 static PyObject *gget_nbits(PyObject *me, void *hunoz)
935 { return (PyInt_FromLong(GROUP_G(me)->nbits)); }
936
937 static PyObject *gget_noctets(PyObject *me, void *hunoz)
938 { return (PyInt_FromLong(GROUP_G(me)->noctets)); }
939
940 static PyObject *gget_i(PyObject *me, void *hunoz)
941 {
942 group *g = GROUP_G(me); ge *x = G_CREATE(g);
943 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
944 }
945
946 static PyObject *gget_g(PyObject *me, void *hunoz)
947 {
948 group *g = GROUP_G(me); ge *x = G_CREATE(g);
949 G_COPY(g, x, g->g); return (ge_pywrap(me, x));
950 }
951
952 static long ge_pyhash(PyObject *me)
953 {
954 buf b;
955 size_t sz = GE_G(me)->noctets + 4;
956 uint32 h = 0xf672c776 + GE_G(me)->ops->ty;
957 octet *p = xmalloc(sz);
958 buf_init(&b, p, sz);
959 G_TOBUF(GE_G(me), &b, GE_X(me));
960 assert(BOK(&b));
961 h = unihash_hash(&unihash_global, h, BBASE(&b), BLEN(&b));
962 xfree(p);
963 return (h % LONG_MAX);
964 }
965
966 static PyObject *gget_r(PyObject *me, void *hunoz)
967 { return (mp_pywrap(MP_COPY(GROUP_G(me)->r))); }
968
969 static PyObject *gget_h(PyObject *me, void *hunoz)
970 { return (mp_pywrap(MP_COPY(GROUP_G(me)->h))); }
971
972 static PyGetSetDef ge_pygetset[] = {
973 #define GETSETNAME(op, name) ge##op##_##name
974 GET (group, "X.group -> group containing X")
975 #undef GETSETNAME
976 { 0 }
977 };
978
979 static PyMethodDef ge_pymethods[] = {
980 #define METHNAME(name) gemeth_##name
981 METH (inv, "X.inv() -> inverse element of X")
982 METH (sqr, "X.sqr() -> X^2 = X * X")
983 METH (check, "X.check() -> check X really belongs to its group")
984 METH (toint, "X.toint() -> X converted to an integer")
985 KWMETH(toec, "\
986 X.toec([curve = ECPt]) -> X converted to elliptic curve point")
987 METH (tobuf, "X.tobuf() -> X in buffer representation")
988 METH (toraw, "X.toraw() -> X in raw representation")
989 #undef METHNAME
990 { 0 }
991 };
992
993 static PyNumberMethods ge_pynumber = {
994 0, /* @nb_add@ */
995 0, /* @nb_subtract@ */
996 ge_pymul, /* @nb_multiply@ */
997 ge_pydiv, /* @nb_divide@ */
998 0, /* @nb_remainder@ */
999 0, /* @nb_divmod@ */
1000 ge_pyexp, /* @nb_power@ */
1001 0, /* @nb_negative@ */
1002 0, /* @nb_positive@ */
1003 0, /* @nb_absolute@ */
1004 ge_pynonzerop, /* @nb_nonzero@ */
1005 0, /* @nb_invert@ */
1006 0, /* @nb_lshift@ */
1007 0, /* @nb_rshift@ */
1008 0, /* @nb_and@ */
1009 0, /* @nb_xor@ */
1010 0, /* @nb_or@ */
1011 0, /* @nb_coerce@ */
1012 ge_pyint, /* @nb_int@ */
1013 ge_pylong, /* @nb_long@ */
1014 0 /* meaningless */, /* @nb_float@ */
1015 0, /* @nb_oct@ */
1016 0, /* @nb_hex@ */
1017
1018 0, /* @nb_inplace_add@ */
1019 0, /* @nb_inplace_subtract@ */
1020 0, /* @nb_inplace_multiply@ */
1021 0, /* @nb_inplace_divide@ */
1022 0, /* @nb_inplace_remainder@ */
1023 0, /* @nb_inplace_power@ */
1024 0, /* @nb_inplace_lshift@ */
1025 0, /* @nb_inplace_rshift@ */
1026 0, /* @nb_inplace_and@ */
1027 0, /* @nb_inplace_xor@ */
1028 0, /* @nb_inplace_or@ */
1029
1030 0, /* @nb_floor_divide@ */
1031 ge_pydiv, /* @nb_true_divide@ */
1032 0, /* @nb_inplace_floor_divide@ */
1033 0, /* @nb_inplace_true_divide@ */
1034 };
1035
1036 static PyTypeObject ge_pytype_skel = {
1037 PyObject_HEAD_INIT(0) 0, /* Header */
1038 "GE", /* @tp_name@ */
1039 sizeof(ge_pyobj), /* @tp_basicsize@ */
1040 0, /* @tp_itemsize@ */
1041
1042 ge_pydealloc, /* @tp_dealloc@ */
1043 0, /* @tp_print@ */
1044 0, /* @tp_getattr@ */
1045 0, /* @tp_setattr@ */
1046 0, /* @tp_compare@ */
1047 0, /* @tp_repr@ */
1048 &ge_pynumber, /* @tp_as_number@ */
1049 0, /* @tp_as_sequence@ */
1050 0, /* @tp_as_mapping@ */
1051 ge_pyhash, /* @tp_hash@ */
1052 0, /* @tp_call@ */
1053 ge_pystr, /* @tp_str@ */
1054 0, /* @tp_getattro@ */
1055 0, /* @tp_setattro@ */
1056 0, /* @tp_as_buffer@ */
1057 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1058 Py_TPFLAGS_CHECKTYPES |
1059 Py_TPFLAGS_BASETYPE,
1060
1061 /* @tp_doc@ */
1062 "Group elements, abstract base class.",
1063
1064 0, /* @tp_traverse@ */
1065 0, /* @tp_clear@ */
1066 ge_pyrichcompare, /* @tp_richcompare@ */
1067 0, /* @tp_weaklistoffset@ */
1068 0, /* @tp_iter@ */
1069 0, /* @tp_iternext@ */
1070 ge_pymethods, /* @tp_methods@ */
1071 0, /* @tp_members@ */
1072 ge_pygetset, /* @tp_getset@ */
1073 0, /* @tp_base@ */
1074 0, /* @tp_dict@ */
1075 0, /* @tp_descr_get@ */
1076 0, /* @tp_descr_set@ */
1077 0, /* @tp_dictoffset@ */
1078 0, /* @tp_init@ */
1079 PyType_GenericAlloc, /* @tp_alloc@ */
1080 abstract_pynew, /* @tp_new@ */
1081 0, /* @tp_free@ */
1082 0 /* @tp_is_gc@ */
1083 };
1084
1085 static PyGetSetDef group_pygetset[] = {
1086 #define GETSETNAME(op, name) g##op##_##name
1087 GET (noctets, "G.noctets -> size in octets of element")
1088 GET (nbits, "G.nbits -> size in bits of element")
1089 GET (i, "G.i -> group identity")
1090 GET (g, "G.g -> group generator")
1091 GET (r, "G.r -> group order")
1092 GET (h, "G.h -> group cofactor")
1093 #undef GETSETNAME
1094 { 0 }
1095 };
1096
1097 static PyMethodDef group_pymethods[] = {
1098 #define METHNAME(name) gmeth_##name
1099 METH (mexp, "\
1100 G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1101 KWMETH(checkgroup, "G.checkgroup([rng = rand]): check group is good")
1102 #undef METHNAME
1103 { 0 }
1104 };
1105
1106 static PyTypeObject group_pytype_skel = {
1107 PyObject_HEAD_INIT(0) 0, /* Header */
1108 "Group", /* @tp_name@ */
1109 sizeof(group_pyobj), /* @tp_basicsize@ */
1110 0, /* @tp_itemsize@ */
1111
1112 group_pydealloc, /* @tp_dealloc@ */
1113 0, /* @tp_print@ */
1114 0, /* @tp_getattr@ */
1115 0, /* @tp_setattr@ */
1116 0, /* @tp_compare@ */
1117 0, /* @tp_repr@ */
1118 0, /* @tp_as_number@ */
1119 0, /* @tp_as_sequence@ */
1120 0, /* @tp_as_mapping@ */
1121 0, /* @tp_hash@ */
1122 0, /* @tp_call@ */
1123 0, /* @tp_str@ */
1124 0, /* @tp_getattro@ */
1125 0, /* @tp_setattro@ */
1126 0, /* @tp_as_buffer@ */
1127 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1128 Py_TPFLAGS_BASETYPE,
1129
1130 /* @tp_doc@ */
1131 "Abstract base class for groups.",
1132
1133 0, /* @tp_traverse@ */
1134 0, /* @tp_clear@ */
1135 group_pyrichcompare, /* @tp_richcompare@ */
1136 0, /* @tp_weaklistoffset@ */
1137 0, /* @tp_iter@ */
1138 0, /* @tp_iternext@ */
1139 group_pymethods, /* @tp_methods@ */
1140 0, /* @tp_members@ */
1141 group_pygetset, /* @tp_getset@ */
1142 0, /* @tp_base@ */
1143 0, /* @tp_dict@ */
1144 0, /* @tp_descr_get@ */
1145 0, /* @tp_descr_set@ */
1146 0, /* @tp_dictoffset@ */
1147 0, /* @tp_init@ */
1148 PyType_GenericAlloc, /* @tp_alloc@ */
1149 abstract_pynew, /* @tp_new@ */
1150 0, /* @tp_free@ */
1151 0 /* @tp_is_gc@ */
1152 };
1153
1154 static PyObject *pgget_info(PyObject *me, void *hunoz)
1155 {
1156 gprime_param dp;
1157 gctx_prime *gg = (gctx_prime *)GROUP_G(me);
1158 dp.p = MP_COPY(gg->mm.m);
1159 dp.q = MP_COPY(gg->g.r);
1160 dp.g = mpmont_reduce(&gg->mm, MP_NEW, gg->gen.x);
1161 return (fginfo_pywrap(&dp, dhinfo_pytype));
1162 }
1163
1164 static PyGetSetDef primegroup_pygetset[] = {
1165 #define GETSETNAME(op, name) pg##op##_##name
1166 GET (info, "G.info -> information about the group")
1167 #undef GETSETNAME
1168 { 0 }
1169 };
1170
1171 static PyObject *primegroup_pynew(PyTypeObject *ty,
1172 PyObject *arg, PyObject *kw)
1173 {
1174 PyObject *i;
1175 static const char *const kwlist[] = { "info", 0 };
1176
1177 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", KWLIST,
1178 dhinfo_pytype, &i))
1179 return (0);
1180 return (group_dopywrap(ty, group_prime(FGINFO_DP(i))));
1181 }
1182
1183 static PyTypeObject primegroup_pytype_skel = {
1184 PyObject_HEAD_INIT(0) 0, /* Header */
1185 "PrimeGroup", /* @tp_name@ */
1186 sizeof(group_pyobj), /* @tp_basicsize@ */
1187 0, /* @tp_itemsize@ */
1188
1189 group_pydealloc, /* @tp_dealloc@ */
1190 0, /* @tp_print@ */
1191 0, /* @tp_getattr@ */
1192 0, /* @tp_setattr@ */
1193 0, /* @tp_compare@ */
1194 0, /* @tp_repr@ */
1195 0, /* @tp_as_number@ */
1196 0, /* @tp_as_sequence@ */
1197 0, /* @tp_as_mapping@ */
1198 0, /* @tp_hash@ */
1199 0, /* @tp_call@ */
1200 0, /* @tp_str@ */
1201 0, /* @tp_getattro@ */
1202 0, /* @tp_setattro@ */
1203 0, /* @tp_as_buffer@ */
1204 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1205 Py_TPFLAGS_BASETYPE,
1206
1207 /* @tp_doc@ */
1208 "PrimeGroup(INFO): subgroups of prime fields.",
1209
1210 0, /* @tp_traverse@ */
1211 0, /* @tp_clear@ */
1212 0, /* @tp_richcompare@ */
1213 0, /* @tp_weaklistoffset@ */
1214 0, /* @tp_iter@ */
1215 0, /* @tp_iternext@ */
1216 0, /* @tp_methods@ */
1217 0, /* @tp_members@ */
1218 primegroup_pygetset, /* @tp_getset@ */
1219 0, /* @tp_base@ */
1220 0, /* @tp_dict@ */
1221 0, /* @tp_descr_get@ */
1222 0, /* @tp_descr_set@ */
1223 0, /* @tp_dictoffset@ */
1224 0, /* @tp_init@ */
1225 PyType_GenericAlloc, /* @tp_alloc@ */
1226 primegroup_pynew, /* @tp_new@ */
1227 0, /* @tp_free@ */
1228 0 /* @tp_is_gc@ */
1229 };
1230
1231 static PyObject *bgget_info(PyObject *me, void *hunoz)
1232 {
1233 gbin_param dp;
1234 gctx_bin *gg = (gctx_bin *)GROUP_G(me);
1235 dp.p = MP_COPY(gg->r.p);
1236 dp.q = MP_COPY(gg->g.r);
1237 dp.g = MP_COPY(gg->gen.x);
1238 return (fginfo_pywrap(&dp, bindhinfo_pytype));
1239 }
1240
1241 static PyGetSetDef bingroup_pygetset[] = {
1242 #define GETSETNAME(op, name) bg##op##_##name
1243 GET (info, "G.info -> information about the group")
1244 #undef GETSETNAME
1245 { 0 }
1246 };
1247
1248 static PyObject *bingroup_pynew(PyTypeObject *ty,
1249 PyObject *arg, PyObject *kw)
1250 {
1251 PyObject *i;
1252 static const char *const kwlist[] = { "info", 0 };
1253
1254 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", KWLIST,
1255 bindhinfo_pytype, &i))
1256 return (0);
1257 return (group_dopywrap(ty, group_binary(FGINFO_DP(i))));
1258 }
1259
1260 static PyTypeObject bingroup_pytype_skel = {
1261 PyObject_HEAD_INIT(0) 0, /* Header */
1262 "BinGroup", /* @tp_name@ */
1263 sizeof(group_pyobj), /* @tp_basicsize@ */
1264 0, /* @tp_itemsize@ */
1265
1266 group_pydealloc, /* @tp_dealloc@ */
1267 0, /* @tp_print@ */
1268 0, /* @tp_getattr@ */
1269 0, /* @tp_setattr@ */
1270 0, /* @tp_compare@ */
1271 0, /* @tp_repr@ */
1272 0, /* @tp_as_number@ */
1273 0, /* @tp_as_sequence@ */
1274 0, /* @tp_as_mapping@ */
1275 0, /* @tp_hash@ */
1276 0, /* @tp_call@ */
1277 0, /* @tp_str@ */
1278 0, /* @tp_getattro@ */
1279 0, /* @tp_setattro@ */
1280 0, /* @tp_as_buffer@ */
1281 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1282 Py_TPFLAGS_BASETYPE,
1283
1284 /* @tp_doc@ */
1285 "BinGroup(INFO): subgroups of binary fields.",
1286
1287 0, /* @tp_traverse@ */
1288 0, /* @tp_clear@ */
1289 0, /* @tp_richcompare@ */
1290 0, /* @tp_weaklistoffset@ */
1291 0, /* @tp_iter@ */
1292 0, /* @tp_iternext@ */
1293 0, /* @tp_methods@ */
1294 0, /* @tp_members@ */
1295 bingroup_pygetset, /* @tp_getset@ */
1296 0, /* @tp_base@ */
1297 0, /* @tp_dict@ */
1298 0, /* @tp_descr_get@ */
1299 0, /* @tp_descr_set@ */
1300 0, /* @tp_dictoffset@ */
1301 0, /* @tp_init@ */
1302 PyType_GenericAlloc, /* @tp_alloc@ */
1303 bingroup_pynew, /* @tp_new@ */
1304 0, /* @tp_free@ */
1305 0 /* @tp_is_gc@ */
1306 };
1307
1308 static PyObject *egget_info(PyObject *me, void *hunoz)
1309 {
1310 ec_info ei;
1311 gctx_ec *gg = (gctx_ec *)GROUP_G(me);
1312
1313 ecinfo_copy(&ei, &gg->ei);
1314 return (ecinfo_pywrap(&ei));
1315 }
1316
1317 static PyGetSetDef ecgroup_pygetset[] = {
1318 #define GETSETNAME(op, name) eg##op##_##name
1319 GET (info, "G.info -> information about the group")
1320 #undef GETSETNAME
1321 { 0 }
1322 };
1323
1324 static PyObject *ecgroup_pynew(PyTypeObject *ty,
1325 PyObject *arg, PyObject *kw)
1326 {
1327 PyObject *i;
1328 ec_info ei;
1329 static const char *const kwlist[] = { "info", 0 };
1330
1331 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", KWLIST,
1332 ecinfo_pytype, &i))
1333 return (0);
1334 ecinfo_copy(&ei, ECINFO_EI(i));
1335 return (group_dopywrap(ty, group_ec(&ei)));
1336 }
1337
1338 static PyTypeObject ecgroup_pytype_skel = {
1339 PyObject_HEAD_INIT(0) 0, /* Header */
1340 "ECGroup", /* @tp_name@ */
1341 sizeof(group_pyobj), /* @tp_basicsize@ */
1342 0, /* @tp_itemsize@ */
1343
1344 group_pydealloc, /* @tp_dealloc@ */
1345 0, /* @tp_print@ */
1346 0, /* @tp_getattr@ */
1347 0, /* @tp_setattr@ */
1348 0, /* @tp_compare@ */
1349 0, /* @tp_repr@ */
1350 0, /* @tp_as_number@ */
1351 0, /* @tp_as_sequence@ */
1352 0, /* @tp_as_mapping@ */
1353 0, /* @tp_hash@ */
1354 0, /* @tp_call@ */
1355 0, /* @tp_str@ */
1356 0, /* @tp_getattro@ */
1357 0, /* @tp_setattro@ */
1358 0, /* @tp_as_buffer@ */
1359 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1360 Py_TPFLAGS_BASETYPE,
1361
1362 /* @tp_doc@ */
1363 "ECGroup(INFO): elliptic curve groups.",
1364
1365 0, /* @tp_traverse@ */
1366 0, /* @tp_clear@ */
1367 0, /* @tp_richcompare@ */
1368 0, /* @tp_weaklistoffset@ */
1369 0, /* @tp_iter@ */
1370 0, /* @tp_iternext@ */
1371 0, /* @tp_methods@ */
1372 0, /* @tp_members@ */
1373 ecgroup_pygetset, /* @tp_getset@ */
1374 0, /* @tp_base@ */
1375 0, /* @tp_dict@ */
1376 0, /* @tp_descr_get@ */
1377 0, /* @tp_descr_set@ */
1378 0, /* @tp_dictoffset@ */
1379 0, /* @tp_init@ */
1380 PyType_GenericAlloc, /* @tp_alloc@ */
1381 ecgroup_pynew, /* @tp_new@ */
1382 0, /* @tp_free@ */
1383 0 /* @tp_is_gc@ */
1384 };
1385
1386 /*----- Global stuff ------------------------------------------------------*/
1387
1388 static PyMethodDef methods[] = {
1389 #define METHNAME(name) meth_##name
1390 METH (_GE_frombuf, "frombuf(BUF) -> X, REST")
1391 METH (_GE_fromraw, "fromraw(BUF) -> X, REST")
1392 METH (_GE_fromstring, "fromstring(STR) -> X, REST")
1393 METH (_Group_parse, "parse(STR) -> G, REST")
1394 METH (_DHInfo_parse, "parse(STR) -> D, REST")
1395 METH (_BinDHInfo_parse, "parse(STR) -> D, REST")
1396 METH (_DHInfo__groupn, 0)
1397 METH (_BinDHInfo__groupn, 0)
1398 KWMETH(_DHInfo_generate, "\
1399 generate(PBITS, [qbits = 0], [event = pgen_nullev],\n\
1400 [rng = rand], [nsteps = 0]) -> D")
1401 KWMETH(_DHInfo_genlimlee, "\
1402 genlimlee(PBITS, QBITS, [event = pgen_nullev], [ievent = pgen_nullev],\n\
1403 [rng = rand], [nsteps = 0], [subgroupp = True]) -> (D, [Q, ...])")
1404 KWMETH(_DHInfo_gendsa, "\
1405 gendsa(PBITS, QBITS, SEED, [event = pgen_nullev], [nsteps = 0])\n\
1406 -> (D, SEED, COUNT)")
1407 KWMETH(_DHInfo_genkcdsa, "\
1408 gendsa(PBITS, QBITS, [event = pgen_nullev], [rng = rand], [nsteps = 0])\n\
1409 -> (D, V)")
1410 #undef METHNAME
1411 { 0 }
1412 };
1413
1414 void group_pyinit(void)
1415 {
1416 INITTYPE(fginfo, root);
1417 INITTYPE(dhinfo, fginfo);
1418 INITTYPE(bindhinfo, dhinfo);
1419 INITTYPE(ge, root);
1420 INITTYPE(group, type);
1421 INITTYPE(primegroup, group);
1422 INITTYPE(bingroup, group);
1423 INITTYPE(ecgroup, group);
1424 addmethods(methods);
1425 }
1426
1427 void group_pyinsert(PyObject *mod)
1428 {
1429 INSERT("FGInfo", fginfo_pytype);
1430 INSERT("DHInfo", dhinfo_pytype);
1431 INSERT("BinDHInfo", bindhinfo_pytype);
1432 INSERT("GE", ge_pytype);
1433 INSERT("Group", group_pytype);
1434 INSERT("PrimeGroup", primegroup_pytype);
1435 INSERT("BinGroup", bingroup_pytype);
1436 INSERT("ECGroup", ecgroup_pytype);
1437 INSERT("_pgroups", namedgroups(ptab, &npgroups));
1438 INSERT("_bingroups", namedgroups(bintab, &nbingroups));
1439 }
1440
1441 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings