3 * Abstract group inteface
5 * (c) 2004 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the Python interface to Catacomb.
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.
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.
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.
27 /*----- Header files ------------------------------------------------------*/
29 #include "catacomb-python.h"
31 /*----- DH and binary group infos -----------------------------------------*/
33 PyObject *fginfo_pywrap(gprime_param *dp, PyTypeObject *ty)
35 fginfo_pyobj *z = PyObject_New(fginfo_pyobj, ty);
37 return ((PyObject *)z);
40 static PyObject *fginfo_pynew(PyTypeObject *ty,
41 PyObject *arg, PyObject *kw)
43 char *kwlist[] = { "p", "r", "g", 0 };
44 gprime_param dp = { 0 };
47 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&O&:new", kwlist,
52 z = PyObject_New(fginfo_pyobj, ty);
54 return ((PyObject *)z);
62 static PyObject *figet_r(PyObject *me, void *hunoz)
63 { return mp_pywrap(MP_COPY(FGINFO_DP(me)->q)); }
65 static PyObject *diget_p(PyObject *me, void *hunoz)
66 { return mp_pywrap(MP_COPY(FGINFO_DP(me)->p)); }
68 static PyObject *diget_g(PyObject *me, void *hunoz)
69 { return mp_pywrap(MP_COPY(FGINFO_DP(me)->g)); }
71 static PyObject *biget_p(PyObject *me, void *hunoz)
72 { return gf_pywrap(MP_COPY(FGINFO_DP(me)->p)); }
74 static PyObject *biget_m(PyObject *me, void *hunoz)
75 { return PyInt_FromLong(mp_octets(FGINFO_DP(me)->p) - 1); }
77 static PyObject *biget_g(PyObject *me, void *hunoz)
78 { return gf_pywrap(MP_COPY(FGINFO_DP(me)->g)); }
80 static void fginfo_pydealloc(PyObject *me)
82 mp_drop(FGINFO_DP(me)->p);
83 mp_drop(FGINFO_DP(me)->q);
84 mp_drop(FGINFO_DP(me)->g);
88 static PyObject *meth__DHInfo_generate(PyObject *me,
89 PyObject *arg, PyObject *kw)
94 grand *r = &rand_global;
95 struct excinfo exc = EXCINFO_INIT;
96 pypgev evt = { { 0 } };
98 { "class", "pbits", "qbits", "event", "rng", "nsteps", 0 };
102 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&O&:generate", kwlist,
103 &me, convuint, &pl, convuint, &ql,
104 convpgev, &evt, convgrand, &r,
107 if (dh_gen(&dp, ql, pl, steps, r, evt.ev.proc, evt.ev.ctx))
109 rc = fginfo_pywrap(&dp, dhinfo_pytype);
115 static PyObject *meth__DHInfo_genlimlee(PyObject *me,
116 PyObject *arg, PyObject *kw)
121 grand *r = &rand_global;
122 struct excinfo exc = EXCINFO_INIT;
123 pypgev oe = { { 0 } }, ie = { { 0 } };
126 char *kwlist[] = { "class", "pbits", "qbits", "event", "ievent",
127 "rng", "nsteps", "subgroupp", 0 };
130 PyObject *rc = 0, *vec = 0;
132 oe.exc = ie.exc = &exc;
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))
140 if (subgroupp) f |= DH_SUBGROUP;
141 if (dh_limlee(&dp, ql, pl, f, steps, r,
142 oe.ev.proc, oe.ev.ctx, ie.ev.proc, ie.ev.ctx, &nf, &v))
144 vec = PyList_New(nf);
145 for (i = 0; i < nf; i++)
146 PyList_SetItem(vec, i, mp_pywrap(v[i]));
148 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype), vec);
150 droppgev(&oe); droppgev(&ie);
154 static PyObject *meth__DHInfo_genkcdsa(PyObject *me,
155 PyObject *arg, PyObject *kw)
160 grand *r = &rand_global;
161 struct excinfo exc = EXCINFO_INIT;
162 pypgev evt = { { 0 } };
163 char *kwlist[] = { "class", "pbits", "qbits",
164 "event", "rng", "nsteps", 0 };
169 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&O&|O&O&O&:genkcdsa", kwlist,
170 &me, convuint, &pl, convuint, &ql,
171 convpgev, &evt, convgrand, &r,
174 if (dh_kcdsagen(&dp, ql, pl, 0, steps, r, evt.ev.proc, evt.ev.ctx))
176 mp_div(&v, 0, dp.p, dp.q);
178 rc = Py_BuildValue("(NN)", fginfo_pywrap(&dp, dhinfo_pytype),
185 static PyObject *meth__DHInfo_gendsa(PyObject *me,
186 PyObject *arg, PyObject *kw)
194 struct excinfo exc = EXCINFO_INIT;
195 pypgev evt = { { 0 } };
197 { "class", "pbits", "qbits", "seed", "event", "nsteps", 0 };
201 if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&O&s#|O&O&:gendsa", kwlist,
202 &me, convuint, &pl, convuint, &ql,
203 &k, &ksz, convpgev, &evt,
206 if (dsa_gen(&dp, ql, pl, steps, k, ksz, &ds, evt.ev.proc, evt.ev.ctx))
208 rc = Py_BuildValue("(NNl)", fginfo_pywrap(&dp, dhinfo_pytype),
209 bytestring_pywrap(ds.p, ds.sz), (long)ds.count);
216 static int npgroups = -1, nbingroups = -1;
218 static PyObject *namedgroups(const pentry *pp, int *ne)
225 for (i = 0; pp[i].name; i++) {
227 for (j = 0; j < i; j++) {
228 if (pp[i].data == pp[j].data) {
229 c = PyDict_GetItemString(d, (/*unconst*/ char *)pp[j].name);
234 c = PyInt_FromLong(i);
236 PyDict_SetItemString(d, (/*unconst*/ char *)p, c);
243 static PyObject *meth__groupn(PyObject *me, PyObject *arg,
244 PyTypeObject *ty, const pentry *pp, int ne)
250 if (!PyArg_ParseTuple(arg, "Oi:_groupn", &me, &i)) goto end;
251 if (i < 0 || i >= ne) VALERR("group index out of range");
252 dh_infofromdata(&gp, pp[i].data);
253 rc = fginfo_pywrap(&gp, ty);
258 static PyObject *meth__DHInfo__groupn(PyObject *me, PyObject *arg)
259 { return (meth__groupn(me, arg, dhinfo_pytype, ptab, npgroups)); }
261 static PyObject *meth__BinDHInfo__groupn(PyObject *me, PyObject *arg)
262 { return (meth__groupn(me, arg, bindhinfo_pytype, bintab, nbingroups)); }
264 static PyObject *meth__parse(PyObject *me, PyObject *arg, PyTypeObject *ty,
265 int (*parse)(qd_parse *, gprime_param *))
272 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p)) goto end;
275 if (parse(&qd, &gp)) VALERR(qd.e);
276 rc = fginfo_pywrap(&gp, ty);
281 static PyObject *meth__DHInfo_parse(PyObject *me, PyObject *arg)
282 { return (meth__parse(me, arg, dhinfo_pytype, dh_parse)); }
284 static PyObject *meth__BinDHInfo_parse(PyObject *me, PyObject *arg)
285 { return (meth__parse(me, arg, bindhinfo_pytype, dhbin_parse)); }
287 static PyGetSetDef fginfo_pygetset[] = {
288 #define GETSETNAME(op, name) fi##op##_##name
289 GET (r, "I.r -> group order")
294 static PyGetSetDef dhinfo_pygetset[] = {
295 #define GETSETNAME(op, name) di##op##_##name
296 GET (p, "I.p -> prime")
297 GET (g, "I.g -> generator")
302 static PyGetSetDef bindhinfo_pygetset[] = {
303 #define GETSETNAME(op, name) bi##op##_##name
304 GET (p, "I.p -> irreducible polynomial")
305 GET (m, "I.m -> degree of polynomial")
306 GET (g, "I.g -> generator")
311 static PyTypeObject fginfo_pytype_skel = {
312 PyObject_HEAD_INIT(0) 0, /* Header */
313 "FGInfo", /* @tp_name@ */
314 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
315 0, /* @tp_itemsize@ */
317 fginfo_pydealloc, /* @tp_dealloc@ */
319 0, /* @tp_getattr@ */
320 0, /* @tp_setattr@ */
321 0, /* @tp_compare@ */
323 0, /* @tp_as_number@ */
324 0, /* @tp_as_sequence@ */
325 0, /* @tp_as_mapping@ */
329 0, /* @tp_getattro@ */
330 0, /* @tp_setattro@ */
331 0, /* @tp_as_buffer@ */
332 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
336 "Abstract base class for field-group information objects.",
338 0, /* @tp_traverse@ */
340 0, /* @tp_richcompare@ */
341 0, /* @tp_weaklistoffset@ */
343 0, /* @tp_iternext@ */
344 0, /* @tp_methods@ */
345 0, /* @tp_members@ */
346 fginfo_pygetset, /* @tp_getset@ */
349 0, /* @tp_descr_get@ */
350 0, /* @tp_descr_set@ */
351 0, /* @tp_dictoffset@ */
353 PyType_GenericAlloc, /* @tp_alloc@ */
354 abstract_pynew, /* @tp_new@ */
359 static PyTypeObject dhinfo_pytype_skel = {
360 PyObject_HEAD_INIT(0) 0, /* Header */
361 "DHInfo", /* @tp_name@ */
362 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
363 0, /* @tp_itemsize@ */
365 fginfo_pydealloc, /* @tp_dealloc@ */
367 0, /* @tp_getattr@ */
368 0, /* @tp_setattr@ */
369 0, /* @tp_compare@ */
371 0, /* @tp_as_number@ */
372 0, /* @tp_as_sequence@ */
373 0, /* @tp_as_mapping@ */
377 0, /* @tp_getattro@ */
378 0, /* @tp_setattro@ */
379 0, /* @tp_as_buffer@ */
380 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
384 "Standard (integer) Diffie-Hellman group information.",
386 0, /* @tp_traverse@ */
388 0, /* @tp_richcompare@ */
389 0, /* @tp_weaklistoffset@ */
391 0, /* @tp_iternext@ */
392 0, /* @tp_methods@ */
393 0, /* @tp_members@ */
394 dhinfo_pygetset, /* @tp_getset@ */
397 0, /* @tp_descr_get@ */
398 0, /* @tp_descr_set@ */
399 0, /* @tp_dictoffset@ */
401 PyType_GenericAlloc, /* @tp_alloc@ */
402 fginfo_pynew, /* @tp_new@ */
407 static PyTypeObject bindhinfo_pytype_skel = {
408 PyObject_HEAD_INIT(0) 0, /* Header */
409 "BinDHInfo", /* @tp_name@ */
410 sizeof(fginfo_pyobj), /* @tp_basicsize@ */
411 0, /* @tp_itemsize@ */
413 fginfo_pydealloc, /* @tp_dealloc@ */
415 0, /* @tp_getattr@ */
416 0, /* @tp_setattr@ */
417 0, /* @tp_compare@ */
419 0, /* @tp_as_number@ */
420 0, /* @tp_as_sequence@ */
421 0, /* @tp_as_mapping@ */
425 0, /* @tp_getattro@ */
426 0, /* @tp_setattro@ */
427 0, /* @tp_as_buffer@ */
428 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
432 "Binary-field Diffie-Hellman group information.",
434 0, /* @tp_traverse@ */
436 0, /* @tp_richcompare@ */
437 0, /* @tp_weaklistoffset@ */
439 0, /* @tp_iternext@ */
440 0, /* @tp_methods@ */
441 0, /* @tp_members@ */
442 bindhinfo_pygetset, /* @tp_getset@ */
445 0, /* @tp_descr_get@ */
446 0, /* @tp_descr_set@ */
447 0, /* @tp_dictoffset@ */
449 PyType_GenericAlloc, /* @tp_alloc@ */
450 fginfo_pynew, /* @tp_new@ */
455 /*----- General utilities -------------------------------------------------*/
457 PyTypeObject *ge_pytype, *group_pytype;
458 PyTypeObject *primegroup_pytype, *bingroup_pytype, *ecgroup_pytype;
460 group *group_copy(group *g)
462 if (strcmp(G_NAME(g), "prime") == 0) {
463 gctx_prime *gc = (gctx_prime *)g;
465 gp.g = G_TOINT(g, MP_NEW, g->g);
468 g = group_prime(&gp);
470 } else if (strcmp(G_NAME(g), "bin") == 0) {
471 gctx_bin *gc = (gctx_bin *)g;
473 gb.g = G_TOINT(g, MP_NEW, g->g);
476 g = group_binary(&gb);
478 } else if (strcmp(G_NAME(g), "ec") == 0) {
479 gctx_ec *gc = (gctx_ec *)g;
481 if ((ei.c = eccurve_copy(gc->ei.c)) == 0)
484 EC_COPY(&ei.g, &gc->ei.g);
485 ei.r = MP_COPY(gc->ei.r);
486 ei.h = MP_COPY(gc->ei.h);
493 PyObject *ge_pywrap(PyObject *gobj, ge *x)
495 ge_pyobj *z = PyObject_New(ge_pyobj, (PyTypeObject *)gobj);
497 z->g = GROUP_G(gobj);
499 return ((PyObject *)z);
502 static PyObject *ge_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
504 char *kwlist[] = { "x", 0 };
513 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O:new", kwlist, &x)) goto end;
515 if (ECPT_PYCHECK(x)) {
517 if (G_FROMEC(g, xx, &p))
518 TYERR("can't convert from elliptic curve point");
520 } else if ((y = tomp(x)) != 0) {
521 if (G_FROMINT(g, xx, y))
522 TYERR("can't convert from integer");
524 } else if (PyString_Check(x)) {
525 sc.buf = PyString_AS_STRING(x);
526 sc.lim = sc.buf + PyString_GET_SIZE(x);
527 if (G_READ(g, xx, &mptext_stringops, &sc) || sc.buf < sc.lim)
528 VALERR("malformed group element string");
530 TYERR("can't convert to group element");
531 return (ge_pywrap((PyObject *)ty, xx));
535 if (xx) G_DESTROY(g, xx);
539 static PyObject *group_dopywrap(PyTypeObject *ty, group *g)
541 group_pyobj *gobj = newtype(ty, 0, g->ops->name);
543 gobj->ty.ht_type.tp_basicsize = sizeof(ge_pyobj);
544 gobj->ty.ht_type.tp_base = ge_pytype;
545 Py_INCREF(group_pytype);
546 gobj->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
547 Py_TPFLAGS_BASETYPE |
548 Py_TPFLAGS_CHECKTYPES |
549 Py_TPFLAGS_HEAPTYPE);
550 gobj->ty.ht_type.tp_alloc = PyType_GenericAlloc;
551 gobj->ty.ht_type.tp_free = 0;
552 gobj->ty.ht_type.tp_new = ge_pynew;
553 typeready(&gobj->ty.ht_type);
554 return ((PyObject *)gobj);
557 PyObject *group_pywrap(group *g)
561 if (strcmp(G_NAME(g), "prime") == 0) ty = primegroup_pytype;
562 else if (strcmp(G_NAME(g), "bin") == 0) ty = bingroup_pytype;
563 else if (strcmp(G_NAME(g), "ec") == 0) ty = ecgroup_pytype;
565 return (group_dopywrap(ty, g));
568 /*----- Group elements ----------------------------------------------------*/
570 #define BINOP(name) \
571 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
575 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
576 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
580 g->ops->name(g, z, GE_X(x), GE_X(y)); \
581 return (ge_pywrap(GE_GOBJ(x), z)); \
588 static PyObject *gemeth_##name(PyObject *me, PyObject *arg) \
592 if (!PyArg_ParseTuple(arg, ":" #name)) return (0); \
595 g->ops->name(g, z, GE_X(me)); \
596 return (ge_pywrap(GE_GOBJ(me), z)); \
602 static PyObject *ge_pyexp(PyObject *x, PyObject *n, PyObject *m)
607 if (m != Py_None || !GE_PYCHECK(x) || (nn = getmp(n)) == 0)
609 z = G_CREATE(GE_G(x));
610 G_EXP(GE_G(x), z, GE_X(x), nn);
612 return (ge_pywrap(GE_GOBJ(x), z));
615 static void ge_pydealloc(PyObject *me)
617 G_DESTROY(GE_G(me), GE_X(me));
618 Py_DECREF(GE_GOBJ(me));
622 static void group_pydealloc(PyObject *me)
624 G_DESTROYGROUP(GROUP_G(me));
625 PyType_Type.tp_dealloc(me);
628 static PyObject *gmexp_id(PyObject *me)
630 group *g = GROUP_G(me); ge *x = G_CREATE(g);
631 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
634 static int gmexp_fill(void *pp, PyObject *me, PyObject *x, PyObject *m)
636 group_expfactor *f = pp;
638 if (!GE_PYCHECK(x) || GE_G(x) != GROUP_G(me) || (f->exp = getmp(m)) == 0)
644 static PyObject *ge_pyrichcompare(PyObject *x, PyObject *y, int op)
649 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) ||
650 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y))))
653 case Py_EQ: b = G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
654 case Py_NE: b = !G_EQ(GE_G(x), GE_X(x), GE_X(y)); break;
655 default: TYERR("group elements are unordered");
662 static PyObject *gemeth_check(PyObject *me, PyObject *arg)
664 if (!PyArg_ParseTuple(arg, ":check")) goto end;
665 if (group_check(GE_G(me), GE_X(me))) VALERR("bad group element");
671 static int ge_pynonzerop(PyObject *x)
672 { return (!G_IDENTP(GE_G(x), GE_X(x))); }
674 static PyObject *ge_pystr(PyObject *me)
679 group_writedstr(GE_G(me), GE_X(me), &d);
680 rc = PyString_FromStringAndSize(d.buf, d.len);
685 static PyObject *ge_pylong(PyObject *me)
690 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
691 TYERR("can't convert to integer");
698 static PyObject *ge_pyint(PyObject *me)
704 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
705 TYERR("can't convert to integer");
706 if (!mp_tolong_checked(x, &l, 0)) rc = PyInt_FromLong(l);
707 else rc = mp_topylong(x);
713 static PyObject *gemeth_toint(PyObject *me, PyObject *arg)
717 if (!PyArg_ParseTuple(arg, ":toint")) goto end;
718 if ((x = G_TOINT(GE_G(me), MP_NEW, GE_X(me))) == 0)
719 TYERR("can't convert to integer");
720 return (mp_pywrap(x));
725 static PyObject *gemeth_toec(PyObject *me, PyObject *arg, PyObject *kw)
727 char *kwlist[] = { "curve", 0 };
728 PyTypeObject *cty = 0;
734 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O:toec", kwlist,
736 g = GROUP_G(GE_GOBJ(me));
738 if (!PyType_Check(cty) || !PyType_IsSubtype(cty, ecpt_pytype))
739 TYERR("want subtype of catacomb.ECPt");
740 Py_INCREF((PyObject *)cty);
741 } else if (strcmp(G_NAME(g), "ec") == 0) {
742 c = eccurve_copy(((gctx_ec *)g)->ei.c);
743 cty = (PyTypeObject *)eccurve_pywrap(0, c);
746 Py_INCREF((PyObject *)cty);
748 if (G_TOEC(GE_G(me), &p, GE_X(me))) {
749 Py_DECREF((PyObject *)cty);
750 TYERR("can't convert to ec point");
752 rc = ecpt_pywrapout(cty, &p);
753 Py_DECREF((PyObject *)cty);
758 static PyObject *gemeth_tobuf(PyObject *me, PyObject *arg)
764 if (!PyArg_ParseTuple(arg, ":tobuf")) return (0);
765 n = GE_G(me)->noctets + 4;
766 rc = bytestring_pywrap(0, n);
767 buf_init(&b, PyString_AS_STRING(rc), n);
768 G_TOBUF(GE_G(me), &b, GE_X(me));
770 _PyString_Resize(&rc, BLEN(&b));
774 static PyObject *gemeth_toraw(PyObject *me, PyObject *arg)
780 if (!PyArg_ParseTuple(arg, ":toraw")) return (0);
781 n = GE_G(me)->noctets;
782 rc = bytestring_pywrap(0, n);
783 buf_init(&b, PyString_AS_STRING(rc), n);
784 G_TORAW(GE_G(me), &b, GE_X(me));
786 _PyString_Resize(&rc, BLEN(&b));
790 static PyObject *gmexp_exp(PyObject *me, void *pp, int n)
792 ge *z = G_CREATE(GROUP_G(me));
793 G_MEXP(GROUP_G(me), z, pp, n);
794 return (ge_pywrap(me, z));
797 static void gmexp_drop(void *pp)
799 group_expfactor *f = pp;
803 static PyObject *gmeth_mexp(PyObject *me, PyObject *arg)
805 return (mexp_common(me, arg, sizeof(group_expfactor),
806 gmexp_id, gmexp_fill, gmexp_exp, gmexp_drop));
809 static PyObject *gmeth_checkgroup(PyObject *me, PyObject *arg, PyObject *kw)
811 char *kwlist[] = { "rng", 0 };
812 grand *r = &rand_global;
815 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:checkgroup", kwlist,
818 if ((p = G_CHECK(GROUP_G(me), r)) != 0)
825 static PyObject *group_pyrichcompare(PyObject *x, PyObject *y, int op)
827 int b = group_samep(GROUP_G(x), GROUP_G(y));
831 default: TYERR("can't order groups");
838 static PyObject *meth__GE_frombuf(PyObject *me, PyObject *arg)
846 if (!PyArg_ParseTuple(arg, "Os#:frombuf", &me, &p, &n))
851 if (G_FROMBUF(g, &b, x))
852 VALERR("invalid data");
853 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
855 if (x) G_DESTROY(g, x);
859 static PyObject *meth__GE_fromraw(PyObject *me, PyObject *arg)
867 if (!PyArg_ParseTuple(arg, "Os#:fromraw", &me, &p, &n))
872 if (G_FROMRAW(g, &b, x))
873 VALERR("invalid data");
874 return (Py_BuildValue("(NN)", ge_pywrap(me, x), bytestring_pywrapbuf(&b)));
876 if (x) G_DESTROY(g, x);
880 static PyObject *meth__GE_fromstring(PyObject *me, PyObject *arg)
888 if (!PyArg_ParseTuple(arg, "Os#:fromstring", &me, &p, &n))
894 if (G_READ(g, x, &mptext_stringops, &sc))
895 VALERR("bad group element string");
896 return (Py_BuildValue("(Ns#)", ge_pywrap(me, x),
897 sc.buf, (Py_ssize_t)(sc.lim - sc.buf)));
899 if (x) G_DESTROY(g, x);
903 static PyObject *meth__Group_parse(PyObject *me, PyObject *arg)
909 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p))
913 if ((g = group_parse(&qd)) == 0)
915 return (group_pywrap(g));
920 static PyObject *geget_group(PyObject *me, void *hunoz)
921 { RETURN_OBJ(GE_GOBJ(me)); }
923 static PyObject *gget_nbits(PyObject *me, void *hunoz)
924 { return (PyInt_FromLong(GROUP_G(me)->nbits)); }
926 static PyObject *gget_noctets(PyObject *me, void *hunoz)
927 { return (PyInt_FromLong(GROUP_G(me)->noctets)); }
929 static PyObject *gget_i(PyObject *me, void *hunoz)
931 group *g = GROUP_G(me); ge *x = G_CREATE(g);
932 G_COPY(g, x, g->i); return (ge_pywrap(me, x));
935 static PyObject *gget_g(PyObject *me, void *hunoz)
937 group *g = GROUP_G(me); ge *x = G_CREATE(g);
938 G_COPY(g, x, g->g); return (ge_pywrap(me, x));
941 static long ge_pyhash(PyObject *me)
944 size_t sz = GE_G(me)->noctets + 4;
945 uint32 h = 0xf672c776 + GE_G(me)->ops->ty;
946 octet *p = xmalloc(sz);
948 G_TOBUF(GE_G(me), &b, GE_X(me));
950 h = unihash_hash(&unihash_global, h, BBASE(&b), BLEN(&b));
952 return (h % LONG_MAX);
955 static PyObject *gget_r(PyObject *me, void *hunoz)
956 { return (mp_pywrap(MP_COPY(GROUP_G(me)->r))); }
958 static PyObject *gget_h(PyObject *me, void *hunoz)
959 { return (mp_pywrap(MP_COPY(GROUP_G(me)->h))); }
961 static PyGetSetDef ge_pygetset[] = {
962 #define GETSETNAME(op, name) ge##op##_##name
963 GET (group, "X.group -> group containing X")
968 static PyMethodDef ge_pymethods[] = {
969 #define METHNAME(name) gemeth_##name
970 METH (inv, "X.inv() -> inverse element of X")
971 METH (sqr, "X.sqr() -> X^2 = X * X")
972 METH (check, "X.check() -> check X really belongs to its group")
973 METH (toint, "X.toint() -> X converted to an integer")
975 X.toec([curve = ECPt]) -> X converted to elliptic curve point")
976 METH (tobuf, "X.tobuf() -> X in buffer representation")
977 METH (toraw, "X.toraw() -> X in raw representation")
982 static PyNumberMethods ge_pynumber = {
984 0, /* @nb_subtract@ */
985 ge_pymul, /* @nb_multiply@ */
986 ge_pydiv, /* @nb_divide@ */
987 0, /* @nb_remainder@ */
989 ge_pyexp, /* @nb_power@ */
990 0, /* @nb_negative@ */
991 0, /* @nb_positive@ */
992 0, /* @nb_absolute@ */
993 ge_pynonzerop, /* @nb_nonzero@ */
1000 0, /* @nb_coerce@ */
1001 ge_pyint, /* @nb_int@ */
1002 ge_pylong, /* @nb_long@ */
1003 0 /* meaningless */, /* @nb_float@ */
1007 0, /* @nb_inplace_add@ */
1008 0, /* @nb_inplace_subtract@ */
1009 0, /* @nb_inplace_multiply@ */
1010 0, /* @nb_inplace_divide@ */
1011 0, /* @nb_inplace_remainder@ */
1012 0, /* @nb_inplace_power@ */
1013 0, /* @nb_inplace_lshift@ */
1014 0, /* @nb_inplace_rshift@ */
1015 0, /* @nb_inplace_and@ */
1016 0, /* @nb_inplace_xor@ */
1017 0, /* @nb_inplace_or@ */
1019 0, /* @nb_floor_divide@ */
1020 ge_pydiv, /* @nb_true_divide@ */
1021 0, /* @nb_inplace_floor_divide@ */
1022 0, /* @nb_inplace_true_divide@ */
1025 static PyTypeObject ge_pytype_skel = {
1026 PyObject_HEAD_INIT(0) 0, /* Header */
1027 "GE", /* @tp_name@ */
1028 sizeof(ge_pyobj), /* @tp_basicsize@ */
1029 0, /* @tp_itemsize@ */
1031 ge_pydealloc, /* @tp_dealloc@ */
1033 0, /* @tp_getattr@ */
1034 0, /* @tp_setattr@ */
1035 0, /* @tp_compare@ */
1037 &ge_pynumber, /* @tp_as_number@ */
1038 0, /* @tp_as_sequence@ */
1039 0, /* @tp_as_mapping@ */
1040 ge_pyhash, /* @tp_hash@ */
1042 ge_pystr, /* @tp_str@ */
1043 0, /* @tp_getattro@ */
1044 0, /* @tp_setattro@ */
1045 0, /* @tp_as_buffer@ */
1046 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1047 Py_TPFLAGS_CHECKTYPES |
1048 Py_TPFLAGS_BASETYPE,
1051 "Group elements, abstract base class.",
1053 0, /* @tp_traverse@ */
1055 ge_pyrichcompare, /* @tp_richcompare@ */
1056 0, /* @tp_weaklistoffset@ */
1058 0, /* @tp_iternext@ */
1059 ge_pymethods, /* @tp_methods@ */
1060 0, /* @tp_members@ */
1061 ge_pygetset, /* @tp_getset@ */
1064 0, /* @tp_descr_get@ */
1065 0, /* @tp_descr_set@ */
1066 0, /* @tp_dictoffset@ */
1068 PyType_GenericAlloc, /* @tp_alloc@ */
1069 abstract_pynew, /* @tp_new@ */
1074 static PyGetSetDef group_pygetset[] = {
1075 #define GETSETNAME(op, name) g##op##_##name
1076 GET (noctets, "G.noctets -> size in octets of element")
1077 GET (nbits, "G.nbits -> size in bits of element")
1078 GET (i, "G.i -> group identity")
1079 GET (g, "G.g -> group generator")
1080 GET (r, "G.r -> group order")
1081 GET (h, "G.h -> group cofactor")
1086 static PyMethodDef group_pymethods[] = {
1087 #define METHNAME(name) gmeth_##name
1089 G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1090 KWMETH(checkgroup, "G.checkgroup([rng = rand]): check group is good")
1095 static PyTypeObject group_pytype_skel = {
1096 PyObject_HEAD_INIT(0) 0, /* Header */
1097 "Group", /* @tp_name@ */
1098 sizeof(group_pyobj), /* @tp_basicsize@ */
1099 0, /* @tp_itemsize@ */
1101 group_pydealloc, /* @tp_dealloc@ */
1103 0, /* @tp_getattr@ */
1104 0, /* @tp_setattr@ */
1105 0, /* @tp_compare@ */
1107 0, /* @tp_as_number@ */
1108 0, /* @tp_as_sequence@ */
1109 0, /* @tp_as_mapping@ */
1113 0, /* @tp_getattro@ */
1114 0, /* @tp_setattro@ */
1115 0, /* @tp_as_buffer@ */
1116 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1117 Py_TPFLAGS_BASETYPE,
1120 "Abstract base class for groups.",
1122 0, /* @tp_traverse@ */
1124 group_pyrichcompare, /* @tp_richcompare@ */
1125 0, /* @tp_weaklistoffset@ */
1127 0, /* @tp_iternext@ */
1128 group_pymethods, /* @tp_methods@ */
1129 0, /* @tp_members@ */
1130 group_pygetset, /* @tp_getset@ */
1133 0, /* @tp_descr_get@ */
1134 0, /* @tp_descr_set@ */
1135 0, /* @tp_dictoffset@ */
1137 PyType_GenericAlloc, /* @tp_alloc@ */
1138 abstract_pynew, /* @tp_new@ */
1143 static PyObject *pgget_info(PyObject *me, void *hunoz)
1146 gctx_prime *gg = (gctx_prime *)GROUP_G(me);
1147 dp.p = MP_COPY(gg->mm.m);
1148 dp.q = MP_COPY(gg->g.r);
1149 dp.g = mpmont_reduce(&gg->mm, MP_NEW, gg->gen.x);
1150 return (fginfo_pywrap(&dp, dhinfo_pytype));
1153 static PyGetSetDef primegroup_pygetset[] = {
1154 #define GETSETNAME(op, name) pg##op##_##name
1155 GET (info, "G.info -> information about the group")
1160 static PyObject *primegroup_pynew(PyTypeObject *ty,
1161 PyObject *arg, PyObject *kw)
1164 char *kwlist[] = { "info", 0 };
1166 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", kwlist,
1169 return (group_dopywrap(ty, group_prime(FGINFO_DP(i))));
1172 static PyTypeObject primegroup_pytype_skel = {
1173 PyObject_HEAD_INIT(0) 0, /* Header */
1174 "PrimeGroup", /* @tp_name@ */
1175 sizeof(group_pyobj), /* @tp_basicsize@ */
1176 0, /* @tp_itemsize@ */
1178 group_pydealloc, /* @tp_dealloc@ */
1180 0, /* @tp_getattr@ */
1181 0, /* @tp_setattr@ */
1182 0, /* @tp_compare@ */
1184 0, /* @tp_as_number@ */
1185 0, /* @tp_as_sequence@ */
1186 0, /* @tp_as_mapping@ */
1190 0, /* @tp_getattro@ */
1191 0, /* @tp_setattro@ */
1192 0, /* @tp_as_buffer@ */
1193 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1194 Py_TPFLAGS_BASETYPE,
1197 "Subgroups of prime fields.",
1199 0, /* @tp_traverse@ */
1201 0, /* @tp_richcompare@ */
1202 0, /* @tp_weaklistoffset@ */
1204 0, /* @tp_iternext@ */
1205 0, /* @tp_methods@ */
1206 0, /* @tp_members@ */
1207 primegroup_pygetset, /* @tp_getset@ */
1210 0, /* @tp_descr_get@ */
1211 0, /* @tp_descr_set@ */
1212 0, /* @tp_dictoffset@ */
1214 PyType_GenericAlloc, /* @tp_alloc@ */
1215 primegroup_pynew, /* @tp_new@ */
1220 static PyObject *bgget_info(PyObject *me, void *hunoz)
1223 gctx_bin *gg = (gctx_bin *)GROUP_G(me);
1224 dp.p = MP_COPY(gg->r.p);
1225 dp.q = MP_COPY(gg->g.r);
1226 dp.g = MP_COPY(gg->gen.x);
1227 return (fginfo_pywrap(&dp, bindhinfo_pytype));
1230 static PyGetSetDef bingroup_pygetset[] = {
1231 #define GETSETNAME(op, name) bg##op##_##name
1232 GET (info, "G.info -> information about the group")
1237 static PyObject *bingroup_pynew(PyTypeObject *ty,
1238 PyObject *arg, PyObject *kw)
1241 char *kwlist[] = { "info", 0 };
1243 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", kwlist,
1244 bindhinfo_pytype, &i))
1246 return (group_dopywrap(ty, group_binary(FGINFO_DP(i))));
1249 static PyTypeObject bingroup_pytype_skel = {
1250 PyObject_HEAD_INIT(0) 0, /* Header */
1251 "BinGroup", /* @tp_name@ */
1252 sizeof(group_pyobj), /* @tp_basicsize@ */
1253 0, /* @tp_itemsize@ */
1255 group_pydealloc, /* @tp_dealloc@ */
1257 0, /* @tp_getattr@ */
1258 0, /* @tp_setattr@ */
1259 0, /* @tp_compare@ */
1261 0, /* @tp_as_number@ */
1262 0, /* @tp_as_sequence@ */
1263 0, /* @tp_as_mapping@ */
1267 0, /* @tp_getattro@ */
1268 0, /* @tp_setattro@ */
1269 0, /* @tp_as_buffer@ */
1270 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1271 Py_TPFLAGS_BASETYPE,
1274 "Subgroups of binary fields.",
1276 0, /* @tp_traverse@ */
1278 0, /* @tp_richcompare@ */
1279 0, /* @tp_weaklistoffset@ */
1281 0, /* @tp_iternext@ */
1282 0, /* @tp_methods@ */
1283 0, /* @tp_members@ */
1284 bingroup_pygetset, /* @tp_getset@ */
1287 0, /* @tp_descr_get@ */
1288 0, /* @tp_descr_set@ */
1289 0, /* @tp_dictoffset@ */
1291 PyType_GenericAlloc, /* @tp_alloc@ */
1292 bingroup_pynew, /* @tp_new@ */
1297 static PyObject *egget_info(PyObject *me, void *hunoz)
1300 gctx_ec *gg = (gctx_ec *)GROUP_G(me);
1302 ecinfo_copy(&ei, &gg->ei);
1303 return (ecinfo_pywrap(&ei));
1306 static PyGetSetDef ecgroup_pygetset[] = {
1307 #define GETSETNAME(op, name) eg##op##_##name
1308 GET (info, "G.info -> information about the group")
1313 static PyObject *ecgroup_pynew(PyTypeObject *ty,
1314 PyObject *arg, PyObject *kw)
1318 char *kwlist[] = { "info", 0 };
1320 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!:new", kwlist,
1323 ecinfo_copy(&ei, ECINFO_EI(i));
1324 return (group_dopywrap(ty, group_ec(&ei)));
1327 static PyTypeObject ecgroup_pytype_skel = {
1328 PyObject_HEAD_INIT(0) 0, /* Header */
1329 "ECGroup", /* @tp_name@ */
1330 sizeof(group_pyobj), /* @tp_basicsize@ */
1331 0, /* @tp_itemsize@ */
1333 group_pydealloc, /* @tp_dealloc@ */
1335 0, /* @tp_getattr@ */
1336 0, /* @tp_setattr@ */
1337 0, /* @tp_compare@ */
1339 0, /* @tp_as_number@ */
1340 0, /* @tp_as_sequence@ */
1341 0, /* @tp_as_mapping@ */
1345 0, /* @tp_getattro@ */
1346 0, /* @tp_setattro@ */
1347 0, /* @tp_as_buffer@ */
1348 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1349 Py_TPFLAGS_BASETYPE,
1352 "Elliptic curve groups.",
1354 0, /* @tp_traverse@ */
1356 0, /* @tp_richcompare@ */
1357 0, /* @tp_weaklistoffset@ */
1359 0, /* @tp_iternext@ */
1360 0, /* @tp_methods@ */
1361 0, /* @tp_members@ */
1362 ecgroup_pygetset, /* @tp_getset@ */
1365 0, /* @tp_descr_get@ */
1366 0, /* @tp_descr_set@ */
1367 0, /* @tp_dictoffset@ */
1369 PyType_GenericAlloc, /* @tp_alloc@ */
1370 ecgroup_pynew, /* @tp_new@ */
1375 /*----- Global stuff ------------------------------------------------------*/
1377 static PyMethodDef methods[] = {
1378 #define METHNAME(name) meth_##name
1379 METH (_GE_frombuf, "frombuf(BUF) -> X, REST")
1380 METH (_GE_fromraw, "fromraw(BUF) -> X, REST")
1381 METH (_GE_fromstring, "fromstring(STR) -> X, REST")
1382 METH (_Group_parse, "parse(STR) -> G, REST")
1383 METH (_DHInfo_parse, "parse(STR) -> D, REST")
1384 METH (_BinDHInfo_parse, "parse(STR) -> D, REST")
1385 METH (_DHInfo__groupn, 0)
1386 METH (_BinDHInfo__groupn, 0)
1387 KWMETH(_DHInfo_generate, "\
1388 generate(PBITS, [qbits = 0], [event = pgen_nullev],\n\
1389 [rng = rand], [nsteps = 0]) -> D")
1390 KWMETH(_DHInfo_genlimlee, "\
1391 genlimlee(PBITS, QBITS, [event = pgen_nullev], [ievent = pgen_nullev],\n\
1392 [rng = rand], [nsteps = 0], [subgroupp = True]) -> (D, [Q, ...])")
1393 KWMETH(_DHInfo_gendsa, "\
1394 gendsa(PBITS, QBITS, SEED, [event = pgen_nullev], [nsteps = 0])\n\
1395 -> (D, SEED, COUNT)")
1396 KWMETH(_DHInfo_genkcdsa, "\
1397 gendsa(PBITS, QBITS, [event = pgen_nullev], [rng = rand], [nsteps = 0])\n\
1403 void group_pyinit(void)
1405 INITTYPE(fginfo, root);
1406 INITTYPE(dhinfo, fginfo);
1407 INITTYPE(bindhinfo, dhinfo);
1409 INITTYPE(group, type);
1410 INITTYPE(primegroup, group);
1411 INITTYPE(bingroup, group);
1412 INITTYPE(ecgroup, group);
1413 addmethods(methods);
1416 void group_pyinsert(PyObject *mod)
1418 INSERT("FGInfo", fginfo_pytype);
1419 INSERT("DHInfo", dhinfo_pytype);
1420 INSERT("BinDHInfo", bindhinfo_pytype);
1421 INSERT("GE", ge_pytype);
1422 INSERT("Group", group_pytype);
1423 INSERT("PrimeGroup", primegroup_pytype);
1424 INSERT("BinGroup", bingroup_pytype);
1425 INSERT("ECGroup", ecgroup_pytype);
1426 INSERT("_pgroups", namedgroups(ptab, &npgroups));
1427 INSERT("_bingroups", namedgroups(bintab, &nbingroups));
1430 /*----- That's all, folks -------------------------------------------------*/