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
;
97 { "class", "pbits", "qbits", "event", "rng", "nsteps", 0 };
100 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "OO&|O&O&O&O&:generate", kwlist
,
101 &me
, convuint
, &pl
, convuint
, &ql
,
102 convpgev
, &evt
, convgrand
, &r
,
105 if (dh_gen(&dp
, ql
, pl
, steps
, r
, evt
.proc
, evt
.ctx
))
107 rc
= fginfo_pywrap(&dp
, dhinfo_pytype
);
113 static PyObject
*meth__DHInfo_genlimlee(PyObject
*me
,
114 PyObject
*arg
, PyObject
*kw
)
119 grand
*r
= &rand_global
;
120 pgev oe
= { 0 }, ie
= { 0 };
123 char *kwlist
[] = { "class", "pbits", "qbits", "event", "ievent",
124 "rng", "nsteps", "subgroupp", 0 };
127 PyObject
*rc
= 0, *vec
= 0;
129 if (!PyArg_ParseTupleAndKeywords(arg
, kw
,
130 "OO&O&|O&O&O&O&O&:genlimlee", kwlist
,
131 &me
, convuint
, &pl
, convuint
, &ql
,
132 convpgev
, &oe
, convpgev
, &ie
,
133 convgrand
, &r
, convuint
, &steps
,
134 convbool
, &subgroupp
))
136 if (subgroupp
) f
|= DH_SUBGROUP
;
137 if (dh_limlee(&dp
, ql
, pl
, f
, steps
, r
,
138 oe
.proc
, oe
.ctx
, ie
.proc
, ie
.ctx
, &nf
, &v
))
140 vec
= PyList_New(nf
);
141 for (i
= 0; i
< nf
; i
++)
142 PyList_SetItem(vec
, i
, mp_pywrap(v
[i
]));
144 rc
= Py_BuildValue("(NN)", fginfo_pywrap(&dp
, dhinfo_pytype
), vec
);
146 droppgev(&oe
); droppgev(&ie
);
150 static PyObject
*meth__DHInfo_genkcdsa(PyObject
*me
,
151 PyObject
*arg
, PyObject
*kw
)
156 grand
*r
= &rand_global
;
158 char *kwlist
[] = { "class", "pbits", "qbits",
159 "event", "rng", "nsteps", 0 };
163 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "OO&O&|O&O&O&:genkcdsa", kwlist
,
164 &me
, convuint
, &pl
, convuint
, &ql
,
165 convpgev
, &evt
, convgrand
, &r
,
168 if (dh_kcdsagen(&dp
, ql
, pl
, 0, steps
, r
, evt
.proc
, evt
.ctx
))
170 mp_div(&v
, 0, dp
.p
, dp
.q
);
172 rc
= Py_BuildValue("(NN)", fginfo_pywrap(&dp
, dhinfo_pytype
),
179 static PyObject
*meth__DHInfo_gendsa(PyObject
*me
,
180 PyObject
*arg
, PyObject
*kw
)
190 { "class", "pbits", "qbits", "seed", "event", "nsteps", 0 };
193 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "OO&O&s#|O&O&:gendsa", kwlist
,
194 &me
, convuint
, &pl
, convuint
, &ql
,
195 &k
, &ksz
, convpgev
, &evt
,
198 if (dsa_gen(&dp
, ql
, pl
, steps
, k
, ksz
, &ds
, evt
.proc
, evt
.ctx
))
200 rc
= Py_BuildValue("(NNl)", fginfo_pywrap(&dp
, dhinfo_pytype
),
201 bytestring_pywrap(ds
.p
, ds
.sz
), (long)ds
.count
);
208 static int npgroups
= -1, nbingroups
= -1;
210 static PyObject
*namedgroups(const pentry
*pp
, int *ne
)
217 for (i
= 0; pp
[i
].name
; i
++) {
219 for (j
= 0; j
< i
; j
++) {
220 if (pp
[i
].data
== pp
[j
].data
) {
221 c
= PyDict_GetItemString(d
, (/*unconst*/ char *)pp
[j
].name
);
226 c
= PyInt_FromLong(i
);
228 PyDict_SetItemString(d
, (/*unconst*/ char *)p
, c
);
235 static PyObject
*meth__groupn(PyObject
*me
, PyObject
*arg
,
236 PyTypeObject
*ty
, const pentry
*pp
, int ne
)
242 if (!PyArg_ParseTuple(arg
, "Oi:_groupn", &me
, &i
)) goto end
;
243 if (i
< 0 || i
>= ne
) VALERR("group index out of range");
244 dh_infofromdata(&gp
, pp
[i
].data
);
245 rc
= fginfo_pywrap(&gp
, ty
);
250 static PyObject
*meth__DHInfo__groupn(PyObject
*me
, PyObject
*arg
)
251 { return (meth__groupn(me
, arg
, dhinfo_pytype
, ptab
, npgroups
)); }
253 static PyObject
*meth__BinDHInfo__groupn(PyObject
*me
, PyObject
*arg
)
254 { return (meth__groupn(me
, arg
, bindhinfo_pytype
, bintab
, nbingroups
)); }
256 static PyObject
*meth__parse(PyObject
*me
, PyObject
*arg
, PyTypeObject
*ty
,
257 int (*parse
)(qd_parse
*, gprime_param
*))
264 if (!PyArg_ParseTuple(arg
, "Os:parse", &me
, &p
)) goto end
;
267 if (parse(&qd
, &gp
)) VALERR(qd
.e
);
268 rc
= fginfo_pywrap(&gp
, ty
);
273 static PyObject
*meth__DHInfo_parse(PyObject
*me
, PyObject
*arg
)
274 { return (meth__parse(me
, arg
, dhinfo_pytype
, dh_parse
)); }
276 static PyObject
*meth__BinDHInfo_parse(PyObject
*me
, PyObject
*arg
)
277 { return (meth__parse(me
, arg
, bindhinfo_pytype
, dhbin_parse
)); }
279 static PyGetSetDef fginfo_pygetset
[] = {
280 #define GETSETNAME(op, name) fi##op##_##name
281 GET (r
, "I.r -> group order")
286 static PyGetSetDef dhinfo_pygetset
[] = {
287 #define GETSETNAME(op, name) di##op##_##name
288 GET (p
, "I.p -> prime")
289 GET (g
, "I.g -> generator")
294 static PyGetSetDef bindhinfo_pygetset
[] = {
295 #define GETSETNAME(op, name) bi##op##_##name
296 GET (p
, "I.p -> irreducible polynomial")
297 GET (m
, "I.m -> degree of polynomial")
298 GET (g
, "I.g -> generator")
303 static PyTypeObject fginfo_pytype_skel
= {
304 PyObject_HEAD_INIT(0) 0, /* Header */
305 "FGInfo", /* @tp_name@ */
306 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
307 0, /* @tp_itemsize@ */
309 fginfo_pydealloc
, /* @tp_dealloc@ */
311 0, /* @tp_getattr@ */
312 0, /* @tp_setattr@ */
313 0, /* @tp_compare@ */
315 0, /* @tp_as_number@ */
316 0, /* @tp_as_sequence@ */
317 0, /* @tp_as_mapping@ */
321 0, /* @tp_getattro@ */
322 0, /* @tp_setattro@ */
323 0, /* @tp_as_buffer@ */
324 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
328 "Abstract base class for field-group information objects.",
330 0, /* @tp_traverse@ */
332 0, /* @tp_richcompare@ */
333 0, /* @tp_weaklistoffset@ */
335 0, /* @tp_iternext@ */
336 0, /* @tp_methods@ */
337 0, /* @tp_members@ */
338 fginfo_pygetset
, /* @tp_getset@ */
341 0, /* @tp_descr_get@ */
342 0, /* @tp_descr_set@ */
343 0, /* @tp_dictoffset@ */
345 PyType_GenericAlloc
, /* @tp_alloc@ */
346 abstract_pynew
, /* @tp_new@ */
351 static PyTypeObject dhinfo_pytype_skel
= {
352 PyObject_HEAD_INIT(0) 0, /* Header */
353 "DHInfo", /* @tp_name@ */
354 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
355 0, /* @tp_itemsize@ */
357 fginfo_pydealloc
, /* @tp_dealloc@ */
359 0, /* @tp_getattr@ */
360 0, /* @tp_setattr@ */
361 0, /* @tp_compare@ */
363 0, /* @tp_as_number@ */
364 0, /* @tp_as_sequence@ */
365 0, /* @tp_as_mapping@ */
369 0, /* @tp_getattro@ */
370 0, /* @tp_setattro@ */
371 0, /* @tp_as_buffer@ */
372 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
376 "Standard (integer) Diffie-Hellman group information.",
378 0, /* @tp_traverse@ */
380 0, /* @tp_richcompare@ */
381 0, /* @tp_weaklistoffset@ */
383 0, /* @tp_iternext@ */
384 0, /* @tp_methods@ */
385 0, /* @tp_members@ */
386 dhinfo_pygetset
, /* @tp_getset@ */
389 0, /* @tp_descr_get@ */
390 0, /* @tp_descr_set@ */
391 0, /* @tp_dictoffset@ */
393 PyType_GenericAlloc
, /* @tp_alloc@ */
394 fginfo_pynew
, /* @tp_new@ */
399 static PyTypeObject bindhinfo_pytype_skel
= {
400 PyObject_HEAD_INIT(0) 0, /* Header */
401 "BinDHInfo", /* @tp_name@ */
402 sizeof(fginfo_pyobj
), /* @tp_basicsize@ */
403 0, /* @tp_itemsize@ */
405 fginfo_pydealloc
, /* @tp_dealloc@ */
407 0, /* @tp_getattr@ */
408 0, /* @tp_setattr@ */
409 0, /* @tp_compare@ */
411 0, /* @tp_as_number@ */
412 0, /* @tp_as_sequence@ */
413 0, /* @tp_as_mapping@ */
417 0, /* @tp_getattro@ */
418 0, /* @tp_setattro@ */
419 0, /* @tp_as_buffer@ */
420 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
424 "Binary-field Diffie-Hellman group information.",
426 0, /* @tp_traverse@ */
428 0, /* @tp_richcompare@ */
429 0, /* @tp_weaklistoffset@ */
431 0, /* @tp_iternext@ */
432 0, /* @tp_methods@ */
433 0, /* @tp_members@ */
434 bindhinfo_pygetset
, /* @tp_getset@ */
437 0, /* @tp_descr_get@ */
438 0, /* @tp_descr_set@ */
439 0, /* @tp_dictoffset@ */
441 PyType_GenericAlloc
, /* @tp_alloc@ */
442 fginfo_pynew
, /* @tp_new@ */
447 /*----- General utilities -------------------------------------------------*/
449 PyTypeObject
*ge_pytype
, *group_pytype
;
450 PyTypeObject
*primegroup_pytype
, *bingroup_pytype
, *ecgroup_pytype
;
452 group
*group_copy(group
*g
)
454 if (strcmp(G_NAME(g
), "prime") == 0) {
455 gctx_prime
*gc
= (gctx_prime
*)g
;
457 gp
.g
= G_TOINT(g
, MP_NEW
, g
->g
);
460 g
= group_prime(&gp
);
462 } else if (strcmp(G_NAME(g
), "bin") == 0) {
463 gctx_bin
*gc
= (gctx_bin
*)g
;
465 gb
.g
= G_TOINT(g
, MP_NEW
, g
->g
);
468 g
= group_binary(&gb
);
470 } else if (strcmp(G_NAME(g
), "ec") == 0) {
471 gctx_ec
*gc
= (gctx_ec
*)g
;
473 if ((ei
.c
= eccurve_copy(gc
->ei
.c
)) == 0)
476 EC_COPY(&ei
.g
, &gc
->ei
.g
);
477 ei
.r
= MP_COPY(gc
->ei
.r
);
478 ei
.h
= MP_COPY(gc
->ei
.h
);
485 PyObject
*ge_pywrap(PyObject
*gobj
, ge
*x
)
487 ge_pyobj
*z
= PyObject_New(ge_pyobj
, (PyTypeObject
*)gobj
);
489 z
->g
= GROUP_G(gobj
);
491 return ((PyObject
*)z
);
494 static PyObject
*ge_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
496 char *kwlist
[] = { "x", 0 };
505 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O:new", kwlist
, &x
)) goto end
;
507 if (ECPT_PYCHECK(x
)) {
509 if (G_FROMEC(g
, xx
, &p
))
510 TYERR("can't convert from elliptic curve point");
512 } else if ((y
= tomp(x
)) != 0) {
513 if (G_FROMINT(g
, xx
, y
))
514 TYERR("can't convert from integer");
516 } else if (PyString_Check(x
)) {
517 sc
.buf
= PyString_AS_STRING(x
);
518 sc
.lim
= sc
.buf
+ PyString_GET_SIZE(x
);
519 if (G_READ(g
, xx
, &mptext_stringops
, &sc
) || sc
.buf
< sc
.lim
)
520 VALERR("malformed group element string");
522 TYERR("can't convert to group element");
523 return (ge_pywrap((PyObject
*)ty
, xx
));
527 if (xx
) G_DESTROY(g
, xx
);
531 static PyObject
*group_dopywrap(PyTypeObject
*ty
, group
*g
)
533 group_pyobj
*gobj
= newtype(ty
, 0, g
->ops
->name
);
535 gobj
->ty
.ht_type
.tp_basicsize
= sizeof(ge_pyobj
);
536 gobj
->ty
.ht_type
.tp_base
= ge_pytype
;
537 Py_INCREF(group_pytype
);
538 gobj
->ty
.ht_type
.tp_flags
= (Py_TPFLAGS_DEFAULT
|
539 Py_TPFLAGS_BASETYPE
|
540 Py_TPFLAGS_CHECKTYPES
|
541 Py_TPFLAGS_HEAPTYPE
);
542 gobj
->ty
.ht_type
.tp_alloc
= PyType_GenericAlloc
;
543 gobj
->ty
.ht_type
.tp_free
= 0;
544 gobj
->ty
.ht_type
.tp_new
= ge_pynew
;
545 typeready(&gobj
->ty
.ht_type
);
546 return ((PyObject
*)gobj
);
549 PyObject
*group_pywrap(group
*g
)
553 if (strcmp(G_NAME(g
), "prime") == 0) ty
= primegroup_pytype
;
554 else if (strcmp(G_NAME(g
), "bin") == 0) ty
= bingroup_pytype
;
555 else if (strcmp(G_NAME(g
), "ec") == 0) ty
= ecgroup_pytype
;
557 return (group_dopywrap(ty
, g
));
560 /*----- Group elements ----------------------------------------------------*/
562 #define BINOP(name) \
563 static PyObject *ge_py##name(PyObject *x, PyObject *y) \
567 if (!GE_PYCHECK(x) || !GE_PYCHECK(y) || \
568 (GE_G(x) != GE_G(y) && !group_samep(GE_G(x), GE_G(y)))) \
572 g->ops->name(g, z, GE_X(x), GE_X(y)); \
573 return (ge_pywrap(GE_GOBJ(x), z)); \
580 static PyObject *gemeth_##name(PyObject *me, PyObject *arg) \
584 if (!PyArg_ParseTuple(arg, ":" #name)) return (0); \
587 g->ops->name(g, z, GE_X(me)); \
588 return (ge_pywrap(GE_GOBJ(me), z)); \
594 static PyObject
*ge_pyexp(PyObject
*x
, PyObject
*n
, PyObject
*m
)
599 if (m
!= Py_None
|| !GE_PYCHECK(x
) || (nn
= getmp(n
)) == 0)
601 z
= G_CREATE(GE_G(x
));
602 G_EXP(GE_G(x
), z
, GE_X(x
), nn
);
604 return (ge_pywrap(GE_GOBJ(x
), z
));
607 static void ge_pydealloc(PyObject
*me
)
609 G_DESTROY(GE_G(me
), GE_X(me
));
610 Py_DECREF(GE_GOBJ(me
));
614 static void group_pydealloc(PyObject
*me
)
616 G_DESTROYGROUP(GROUP_G(me
));
617 PyType_Type
.tp_dealloc(me
);
620 static PyObject
*gmexp_id(PyObject
*me
)
622 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
623 G_COPY(g
, x
, g
->i
); return (ge_pywrap(me
, x
));
626 static int gmexp_fill(void *pp
, PyObject
*me
, PyObject
*x
, PyObject
*m
)
628 group_expfactor
*f
= pp
;
630 if (!GE_PYCHECK(x
) || GE_G(x
) != GROUP_G(me
) || (f
->exp
= getmp(m
)) == 0)
636 static PyObject
*ge_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
641 if (!GE_PYCHECK(x
) || !GE_PYCHECK(y
) ||
642 (GE_G(x
) != GE_G(y
) && !group_samep(GE_G(x
), GE_G(y
))))
645 case Py_EQ
: b
= G_EQ(GE_G(x
), GE_X(x
), GE_X(y
)); break;
646 case Py_NE
: b
= !G_EQ(GE_G(x
), GE_X(x
), GE_X(y
)); break;
647 default: TYERR("group elements are unordered");
654 static PyObject
*gemeth_check(PyObject
*me
, PyObject
*arg
)
656 if (!PyArg_ParseTuple(arg
, ":check")) goto end
;
657 if (group_check(GE_G(me
), GE_X(me
))) VALERR("bad group element");
663 static int ge_pynonzerop(PyObject
*x
)
664 { return (!G_IDENTP(GE_G(x
), GE_X(x
))); }
666 static PyObject
*ge_pystr(PyObject
*me
)
671 group_writedstr(GE_G(me
), GE_X(me
), &d
);
672 rc
= PyString_FromStringAndSize(d
.buf
, d
.len
);
677 static PyObject
*ge_pylong(PyObject
*me
)
682 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
683 TYERR("can't convert to integer");
690 static PyObject
*ge_pyint(PyObject
*me
)
696 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
697 TYERR("can't convert to integer");
698 if (!mp_tolong_checked(x
, &l
, 0)) rc
= PyInt_FromLong(l
);
699 else rc
= mp_topylong(x
);
705 static PyObject
*gemeth_toint(PyObject
*me
, PyObject
*arg
)
709 if (!PyArg_ParseTuple(arg
, ":toint")) goto end
;
710 if ((x
= G_TOINT(GE_G(me
), MP_NEW
, GE_X(me
))) == 0)
711 TYERR("can't convert to integer");
712 return (mp_pywrap(x
));
717 static PyObject
*gemeth_toec(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
719 char *kwlist
[] = { "curve", 0 };
720 PyTypeObject
*cty
= 0;
726 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O:toec", kwlist
,
728 g
= GROUP_G(GE_GOBJ(me
));
730 if (!PyType_Check(cty
) || !PyType_IsSubtype(cty
, ecpt_pytype
))
731 TYERR("want subtype of catacomb.ECPt");
732 Py_INCREF((PyObject
*)cty
);
733 } else if (strcmp(G_NAME(g
), "ec") == 0) {
734 c
= eccurve_copy(((gctx_ec
*)g
)->ei
.c
);
735 cty
= (PyTypeObject
*)eccurve_pywrap(0, c
);
738 Py_INCREF((PyObject
*)cty
);
740 if (G_TOEC(GE_G(me
), &p
, GE_X(me
))) {
741 Py_DECREF((PyObject
*)cty
);
742 TYERR("can't convert to ec point");
744 rc
= ecpt_pywrapout(cty
, &p
);
745 Py_DECREF((PyObject
*)cty
);
750 static PyObject
*gemeth_tobuf(PyObject
*me
, PyObject
*arg
)
756 if (!PyArg_ParseTuple(arg
, ":tobuf")) return (0);
757 n
= GE_G(me
)->noctets
+ 4;
758 rc
= bytestring_pywrap(0, n
);
759 buf_init(&b
, PyString_AS_STRING(rc
), n
);
760 G_TOBUF(GE_G(me
), &b
, GE_X(me
));
762 _PyString_Resize(&rc
, BLEN(&b
));
766 static PyObject
*gemeth_toraw(PyObject
*me
, PyObject
*arg
)
772 if (!PyArg_ParseTuple(arg
, ":toraw")) return (0);
773 n
= GE_G(me
)->noctets
;
774 rc
= bytestring_pywrap(0, n
);
775 buf_init(&b
, PyString_AS_STRING(rc
), n
);
776 G_TORAW(GE_G(me
), &b
, GE_X(me
));
778 _PyString_Resize(&rc
, BLEN(&b
));
782 static PyObject
*gmexp_exp(PyObject
*me
, void *pp
, int n
)
784 ge
*z
= G_CREATE(GROUP_G(me
));
785 G_MEXP(GROUP_G(me
), z
, pp
, n
);
786 return (ge_pywrap(me
, z
));
789 static void gmexp_drop(void *pp
)
791 group_expfactor
*f
= pp
;
795 static PyObject
*gmeth_mexp(PyObject
*me
, PyObject
*arg
)
797 return (mexp_common(me
, arg
, sizeof(group_expfactor
),
798 gmexp_id
, gmexp_fill
, gmexp_exp
, gmexp_drop
));
801 static PyObject
*gmeth_checkgroup(PyObject
*me
, PyObject
*arg
, PyObject
*kw
)
803 char *kwlist
[] = { "rng", 0 };
804 grand
*r
= &rand_global
;
807 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "|O&:checkgroup", kwlist
,
810 if ((p
= G_CHECK(GROUP_G(me
), r
)) != 0)
817 static PyObject
*group_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
819 int b
= group_samep(GROUP_G(x
), GROUP_G(y
));
823 default: TYERR("can't order groups");
830 static PyObject
*meth__GE_frombuf(PyObject
*me
, PyObject
*arg
)
838 if (!PyArg_ParseTuple(arg
, "Os#:frombuf", &me
, &p
, &n
))
843 if (G_FROMBUF(g
, &b
, x
))
844 VALERR("invalid data");
845 return (Py_BuildValue("(NN)", ge_pywrap(me
, x
), bytestring_pywrapbuf(&b
)));
847 if (x
) G_DESTROY(g
, x
);
851 static PyObject
*meth__GE_fromraw(PyObject
*me
, PyObject
*arg
)
859 if (!PyArg_ParseTuple(arg
, "Os#:fromraw", &me
, &p
, &n
))
864 if (G_FROMRAW(g
, &b
, x
))
865 VALERR("invalid data");
866 return (Py_BuildValue("(NN)", ge_pywrap(me
, x
), bytestring_pywrapbuf(&b
)));
868 if (x
) G_DESTROY(g
, x
);
872 static PyObject
*meth__GE_fromstring(PyObject
*me
, PyObject
*arg
)
880 if (!PyArg_ParseTuple(arg
, "Os#:fromstring", &me
, &p
, &n
))
886 if (G_READ(g
, x
, &mptext_stringops
, &sc
))
887 VALERR("bad group element string");
888 return (Py_BuildValue("(Ns#)", ge_pywrap(me
, x
),
889 sc
.buf
, (Py_ssize_t
)(sc
.lim
- sc
.buf
)));
891 if (x
) G_DESTROY(g
, x
);
895 static PyObject
*meth__Group_parse(PyObject
*me
, PyObject
*arg
)
901 if (!PyArg_ParseTuple(arg
, "Os:parse", &me
, &p
))
905 if ((g
= group_parse(&qd
)) == 0)
907 return (group_pywrap(g
));
912 static PyObject
*geget_group(PyObject
*me
, void *hunoz
)
913 { RETURN_OBJ(GE_GOBJ(me
)); }
915 static PyObject
*gget_nbits(PyObject
*me
, void *hunoz
)
916 { return (PyInt_FromLong(GROUP_G(me
)->nbits
)); }
918 static PyObject
*gget_noctets(PyObject
*me
, void *hunoz
)
919 { return (PyInt_FromLong(GROUP_G(me
)->noctets
)); }
921 static PyObject
*gget_i(PyObject
*me
, void *hunoz
)
923 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
924 G_COPY(g
, x
, g
->i
); return (ge_pywrap(me
, x
));
927 static PyObject
*gget_g(PyObject
*me
, void *hunoz
)
929 group
*g
= GROUP_G(me
); ge
*x
= G_CREATE(g
);
930 G_COPY(g
, x
, g
->g
); return (ge_pywrap(me
, x
));
933 static long ge_pyhash(PyObject
*me
)
936 size_t sz
= GE_G(me
)->noctets
+ 4;
937 uint32 h
= 0xf672c776 + GE_G(me
)->ops
->ty
;
938 octet
*p
= xmalloc(sz
);
940 G_TOBUF(GE_G(me
), &b
, GE_X(me
));
942 h
= unihash_hash(&unihash_global
, h
, BBASE(&b
), BLEN(&b
));
944 return (h
% LONG_MAX
);
947 static PyObject
*gget_r(PyObject
*me
, void *hunoz
)
948 { return (mp_pywrap(MP_COPY(GROUP_G(me
)->r
))); }
950 static PyObject
*gget_h(PyObject
*me
, void *hunoz
)
951 { return (mp_pywrap(MP_COPY(GROUP_G(me
)->h
))); }
953 static PyGetSetDef ge_pygetset
[] = {
954 #define GETSETNAME(op, name) ge##op##_##name
955 GET (group
, "X.group -> group containing X")
960 static PyMethodDef ge_pymethods
[] = {
961 #define METHNAME(name) gemeth_##name
962 METH (inv
, "X.inv() -> inverse element of X")
963 METH (sqr
, "X.sqr() -> X^2 = X * X")
964 METH (check
, "X.check() -> check X really belongs to its group")
965 METH (toint
, "X.toint() -> X converted to an integer")
967 X.toec(curve = ecpt) -> X converted to elliptic curve point")
968 METH (tobuf
, "X.tobuf() -> X in buffer representation")
969 METH (toraw
, "X.toraw() -> X in raw representation")
974 static PyNumberMethods ge_pynumber
= {
976 0, /* @nb_subtract@ */
977 ge_pymul
, /* @nb_multiply@ */
978 ge_pydiv
, /* @nb_divide@ */
979 0, /* @nb_remainder@ */
981 ge_pyexp
, /* @nb_power@ */
982 0, /* @nb_negative@ */
983 0, /* @nb_positive@ */
984 0, /* @nb_absolute@ */
985 ge_pynonzerop
, /* @nb_nonzero@ */
993 ge_pyint
, /* @nb_int@ */
994 ge_pylong
, /* @nb_long@ */
995 0 /* meaningless */, /* @nb_float@ */
999 0, /* @nb_inplace_add@ */
1000 0, /* @nb_inplace_subtract@ */
1001 0, /* @nb_inplace_multiply@ */
1002 0, /* @nb_inplace_divide@ */
1003 0, /* @nb_inplace_remainder@ */
1004 0, /* @nb_inplace_power@ */
1005 0, /* @nb_inplace_lshift@ */
1006 0, /* @nb_inplace_rshift@ */
1007 0, /* @nb_inplace_and@ */
1008 0, /* @nb_inplace_xor@ */
1009 0, /* @nb_inplace_or@ */
1011 0, /* @nb_floor_divide@ */
1012 ge_pydiv
, /* @nb_true_divide@ */
1013 0, /* @nb_inplace_floor_divide@ */
1014 0, /* @nb_inplace_true_divide@ */
1017 static PyTypeObject ge_pytype_skel
= {
1018 PyObject_HEAD_INIT(0) 0, /* Header */
1019 "GE", /* @tp_name@ */
1020 sizeof(ge_pyobj
), /* @tp_basicsize@ */
1021 0, /* @tp_itemsize@ */
1023 ge_pydealloc
, /* @tp_dealloc@ */
1025 0, /* @tp_getattr@ */
1026 0, /* @tp_setattr@ */
1027 0, /* @tp_compare@ */
1029 &ge_pynumber
, /* @tp_as_number@ */
1030 0, /* @tp_as_sequence@ */
1031 0, /* @tp_as_mapping@ */
1032 ge_pyhash
, /* @tp_hash@ */
1034 ge_pystr
, /* @tp_str@ */
1035 0, /* @tp_getattro@ */
1036 0, /* @tp_setattro@ */
1037 0, /* @tp_as_buffer@ */
1038 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1039 Py_TPFLAGS_CHECKTYPES
|
1040 Py_TPFLAGS_BASETYPE
,
1043 "Group elements, abstract base class.",
1045 0, /* @tp_traverse@ */
1047 ge_pyrichcompare
, /* @tp_richcompare@ */
1048 0, /* @tp_weaklistoffset@ */
1050 0, /* @tp_iternext@ */
1051 ge_pymethods
, /* @tp_methods@ */
1052 0, /* @tp_members@ */
1053 ge_pygetset
, /* @tp_getset@ */
1056 0, /* @tp_descr_get@ */
1057 0, /* @tp_descr_set@ */
1058 0, /* @tp_dictoffset@ */
1060 PyType_GenericAlloc
, /* @tp_alloc@ */
1061 abstract_pynew
, /* @tp_new@ */
1066 static PyGetSetDef group_pygetset
[] = {
1067 #define GETSETNAME(op, name) g##op##_##name
1068 GET (noctets
, "G.noctets -> size in octets of element")
1069 GET (nbits
, "G.nbits -> size in bits of element")
1070 GET (i
, "G.i -> group identity")
1071 GET (g
, "G.g -> group generator")
1072 GET (r
, "G.r -> group order")
1073 GET (h
, "G.h -> group cofactor")
1078 static PyMethodDef group_pymethods
[] = {
1079 #define METHNAME(name) gmeth_##name
1081 G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
1082 KWMETH(checkgroup
, "G.checkgroup(rand = random): check group is good")
1087 static PyTypeObject group_pytype_skel
= {
1088 PyObject_HEAD_INIT(0) 0, /* Header */
1089 "Group", /* @tp_name@ */
1090 sizeof(group_pyobj
), /* @tp_basicsize@ */
1091 0, /* @tp_itemsize@ */
1093 group_pydealloc
, /* @tp_dealloc@ */
1095 0, /* @tp_getattr@ */
1096 0, /* @tp_setattr@ */
1097 0, /* @tp_compare@ */
1099 0, /* @tp_as_number@ */
1100 0, /* @tp_as_sequence@ */
1101 0, /* @tp_as_mapping@ */
1105 0, /* @tp_getattro@ */
1106 0, /* @tp_setattro@ */
1107 0, /* @tp_as_buffer@ */
1108 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1109 Py_TPFLAGS_BASETYPE
,
1112 "Abstract base class for groups.",
1114 0, /* @tp_traverse@ */
1116 group_pyrichcompare
, /* @tp_richcompare@ */
1117 0, /* @tp_weaklistoffset@ */
1119 0, /* @tp_iternext@ */
1120 group_pymethods
, /* @tp_methods@ */
1121 0, /* @tp_members@ */
1122 group_pygetset
, /* @tp_getset@ */
1125 0, /* @tp_descr_get@ */
1126 0, /* @tp_descr_set@ */
1127 0, /* @tp_dictoffset@ */
1129 PyType_GenericAlloc
, /* @tp_alloc@ */
1130 abstract_pynew
, /* @tp_new@ */
1135 static PyObject
*pgget_info(PyObject
*me
, void *hunoz
)
1138 gctx_prime
*gg
= (gctx_prime
*)GROUP_G(me
);
1139 dp
.p
= MP_COPY(gg
->mm
.m
);
1140 dp
.q
= MP_COPY(gg
->g
.r
);
1141 dp
.g
= mpmont_reduce(&gg
->mm
, MP_NEW
, gg
->gen
.x
);
1142 return (fginfo_pywrap(&dp
, dhinfo_pytype
));
1145 static PyGetSetDef primegroup_pygetset
[] = {
1146 #define GETSETNAME(op, name) pg##op##_##name
1147 GET (info
, "G.info -> information about the group")
1152 static PyObject
*primegroup_pynew(PyTypeObject
*ty
,
1153 PyObject
*arg
, PyObject
*kw
)
1156 char *kwlist
[] = { "info", 0 };
1158 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", kwlist
,
1161 return (group_dopywrap(ty
, group_prime(FGINFO_DP(i
))));
1164 static PyTypeObject primegroup_pytype_skel
= {
1165 PyObject_HEAD_INIT(0) 0, /* Header */
1166 "PrimeGroup", /* @tp_name@ */
1167 sizeof(group_pyobj
), /* @tp_basicsize@ */
1168 0, /* @tp_itemsize@ */
1170 group_pydealloc
, /* @tp_dealloc@ */
1172 0, /* @tp_getattr@ */
1173 0, /* @tp_setattr@ */
1174 0, /* @tp_compare@ */
1176 0, /* @tp_as_number@ */
1177 0, /* @tp_as_sequence@ */
1178 0, /* @tp_as_mapping@ */
1182 0, /* @tp_getattro@ */
1183 0, /* @tp_setattro@ */
1184 0, /* @tp_as_buffer@ */
1185 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1186 Py_TPFLAGS_BASETYPE
,
1189 "Subgroups of prime fields.",
1191 0, /* @tp_traverse@ */
1193 0, /* @tp_richcompare@ */
1194 0, /* @tp_weaklistoffset@ */
1196 0, /* @tp_iternext@ */
1197 0, /* @tp_methods@ */
1198 0, /* @tp_members@ */
1199 primegroup_pygetset
, /* @tp_getset@ */
1202 0, /* @tp_descr_get@ */
1203 0, /* @tp_descr_set@ */
1204 0, /* @tp_dictoffset@ */
1206 PyType_GenericAlloc
, /* @tp_alloc@ */
1207 primegroup_pynew
, /* @tp_new@ */
1212 static PyObject
*bgget_info(PyObject
*me
, void *hunoz
)
1215 gctx_bin
*gg
= (gctx_bin
*)GROUP_G(me
);
1216 dp
.p
= MP_COPY(gg
->r
.p
);
1217 dp
.q
= MP_COPY(gg
->g
.r
);
1218 dp
.g
= MP_COPY(gg
->gen
.x
);
1219 return (fginfo_pywrap(&dp
, bindhinfo_pytype
));
1222 static PyGetSetDef bingroup_pygetset
[] = {
1223 #define GETSETNAME(op, name) bg##op##_##name
1224 GET (info
, "G.info -> information about the group")
1229 static PyObject
*bingroup_pynew(PyTypeObject
*ty
,
1230 PyObject
*arg
, PyObject
*kw
)
1233 char *kwlist
[] = { "info", 0 };
1235 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", kwlist
,
1236 bindhinfo_pytype
, &i
))
1238 return (group_dopywrap(ty
, group_binary(FGINFO_DP(i
))));
1241 static PyTypeObject bingroup_pytype_skel
= {
1242 PyObject_HEAD_INIT(0) 0, /* Header */
1243 "BinGroup", /* @tp_name@ */
1244 sizeof(group_pyobj
), /* @tp_basicsize@ */
1245 0, /* @tp_itemsize@ */
1247 group_pydealloc
, /* @tp_dealloc@ */
1249 0, /* @tp_getattr@ */
1250 0, /* @tp_setattr@ */
1251 0, /* @tp_compare@ */
1253 0, /* @tp_as_number@ */
1254 0, /* @tp_as_sequence@ */
1255 0, /* @tp_as_mapping@ */
1259 0, /* @tp_getattro@ */
1260 0, /* @tp_setattro@ */
1261 0, /* @tp_as_buffer@ */
1262 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1263 Py_TPFLAGS_BASETYPE
,
1266 "Subgroups of binary fields.",
1268 0, /* @tp_traverse@ */
1270 0, /* @tp_richcompare@ */
1271 0, /* @tp_weaklistoffset@ */
1273 0, /* @tp_iternext@ */
1274 0, /* @tp_methods@ */
1275 0, /* @tp_members@ */
1276 bingroup_pygetset
, /* @tp_getset@ */
1279 0, /* @tp_descr_get@ */
1280 0, /* @tp_descr_set@ */
1281 0, /* @tp_dictoffset@ */
1283 PyType_GenericAlloc
, /* @tp_alloc@ */
1284 bingroup_pynew
, /* @tp_new@ */
1289 static PyObject
*egget_info(PyObject
*me
, void *hunoz
)
1292 gctx_ec
*gg
= (gctx_ec
*)GROUP_G(me
);
1294 ecinfo_copy(&ei
, &gg
->ei
);
1295 return (ecinfo_pywrap(&ei
));
1298 static PyGetSetDef ecgroup_pygetset
[] = {
1299 #define GETSETNAME(op, name) eg##op##_##name
1300 GET (info
, "G.info -> information about the group")
1305 static PyObject
*ecgroup_pynew(PyTypeObject
*ty
,
1306 PyObject
*arg
, PyObject
*kw
)
1310 char *kwlist
[] = { "info", 0 };
1312 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O!:new", kwlist
,
1315 ecinfo_copy(&ei
, ECINFO_EI(i
));
1316 return (group_dopywrap(ty
, group_ec(&ei
)));
1319 static PyTypeObject ecgroup_pytype_skel
= {
1320 PyObject_HEAD_INIT(0) 0, /* Header */
1321 "ECGroup", /* @tp_name@ */
1322 sizeof(group_pyobj
), /* @tp_basicsize@ */
1323 0, /* @tp_itemsize@ */
1325 group_pydealloc
, /* @tp_dealloc@ */
1327 0, /* @tp_getattr@ */
1328 0, /* @tp_setattr@ */
1329 0, /* @tp_compare@ */
1331 0, /* @tp_as_number@ */
1332 0, /* @tp_as_sequence@ */
1333 0, /* @tp_as_mapping@ */
1337 0, /* @tp_getattro@ */
1338 0, /* @tp_setattro@ */
1339 0, /* @tp_as_buffer@ */
1340 Py_TPFLAGS_DEFAULT
| /* @tp_flags@ */
1341 Py_TPFLAGS_BASETYPE
,
1344 "Elliptic curve groups.",
1346 0, /* @tp_traverse@ */
1348 0, /* @tp_richcompare@ */
1349 0, /* @tp_weaklistoffset@ */
1351 0, /* @tp_iternext@ */
1352 0, /* @tp_methods@ */
1353 0, /* @tp_members@ */
1354 ecgroup_pygetset
, /* @tp_getset@ */
1357 0, /* @tp_descr_get@ */
1358 0, /* @tp_descr_set@ */
1359 0, /* @tp_dictoffset@ */
1361 PyType_GenericAlloc
, /* @tp_alloc@ */
1362 ecgroup_pynew
, /* @tp_new@ */
1367 /*----- Global stuff ------------------------------------------------------*/
1369 static PyMethodDef methods
[] = {
1370 #define METHNAME(name) meth_##name
1371 METH (_GE_frombuf
, "frombuf(BUF) -> X, REST")
1372 METH (_GE_fromraw
, "fromraw(BUF) -> X, REST")
1373 METH (_GE_fromstring
, "fromstring(STR) -> X, REST")
1374 METH (_Group_parse
, "parse(STR) -> G, REST")
1375 METH (_DHInfo_parse
, "parse(STR) -> D, REST")
1376 METH (_BinDHInfo_parse
, "parse(STR) -> D, REST")
1377 METH (_DHInfo__groupn
, 0)
1378 METH (_BinDHInfo__groupn
, 0)
1379 KWMETH(_DHInfo_generate
, "\
1380 generate(PBITS, [qbits = 0, event = pgen_nullev,\n\
1381 rng = rand, nsteps = 0]) -> D")
1382 KWMETH(_DHInfo_genlimlee
, "\
1383 genlimlee(PBITS, QBITS, [event = pgen_nullev, ievent = pgen_nullev,\n\
1384 rng = rand, nsteps = 0, subgroupp = True]) -> (D, [Q, ...])")
1385 KWMETH(_DHInfo_gendsa
, "\
1386 gendsa(PBITS, QBITS, SEED, [event = pgen_nullev, nsteps = 0])\n\
1387 -> (D, SEED, COUNT)")
1388 KWMETH(_DHInfo_genkcdsa
, "\
1389 gendsa(PBITS, QBITS, [event = pgen_nullev, rng = rand, nsteps = 0])\n\
1395 void group_pyinit(void)
1397 INITTYPE(fginfo
, root
);
1398 INITTYPE(dhinfo
, fginfo
);
1399 INITTYPE(bindhinfo
, dhinfo
);
1401 INITTYPE(group
, type
);
1402 INITTYPE(primegroup
, group
);
1403 INITTYPE(bingroup
, group
);
1404 INITTYPE(ecgroup
, group
);
1405 addmethods(methods
);
1408 void group_pyinsert(PyObject
*mod
)
1410 INSERT("FGInfo", fginfo_pytype
);
1411 INSERT("DHInfo", dhinfo_pytype
);
1412 INSERT("BinDHInfo", bindhinfo_pytype
);
1413 INSERT("GE", ge_pytype
);
1414 INSERT("Group", group_pytype
);
1415 INSERT("PrimeGroup", primegroup_pytype
);
1416 INSERT("BinGroup", bingroup_pytype
);
1417 INSERT("ECGroup", ecgroup_pytype
);
1418 INSERT("_pgroups", namedgroups(ptab
, &npgroups
));
1419 INSERT("_bingroups", namedgroups(bintab
, &nbingroups
));
1422 /*----- That's all, folks -------------------------------------------------*/