Commit | Line | Data |
---|---|---|
d7ab1bab | 1 | /* -*-c-*- |
2 | * | |
3 | * $Id$ | |
4 | * | |
5 | * Public-key cryptography | |
6 | * | |
7 | * (c) 2004 Straylight/Edgeware | |
8 | */ | |
9 | ||
b2687a0a | 10 | /*----- Licensing notice --------------------------------------------------* |
d7ab1bab | 11 | * |
12 | * This file is part of the Python interface to Catacomb. | |
13 | * | |
14 | * Catacomb/Python is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
b2687a0a | 18 | * |
d7ab1bab | 19 | * Catacomb/Python is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
b2687a0a | 23 | * |
d7ab1bab | 24 | * You should have received a copy of the GNU General Public License |
25 | * along with Catacomb/Python; if not, write to the Free Software Foundation, | |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
27 | */ | |
28 | ||
29 | /*----- Header files ------------------------------------------------------*/ | |
30 | ||
31 | #include "catacomb-python.h" | |
32 | ||
33 | /*----- DSA and similar ---------------------------------------------------*/ | |
34 | ||
35 | typedef struct dsa_pyobj { | |
36 | PyObject_HEAD | |
37 | PyObject *G, *u, *p, *rng, *hash; | |
38 | gdsa d; | |
39 | } dsa_pyobj; | |
40 | ||
41 | static PyTypeObject *dsapub_pytype, *dsapriv_pytype; | |
42 | static PyTypeObject *kcdsapub_pytype, *kcdsapriv_pytype; | |
43 | #define DSA_D(o) (&((dsa_pyobj *)(o))->d) | |
44 | #define DSA_G(o) (((dsa_pyobj *)(o))->G) | |
45 | #define DSA_U(o) (((dsa_pyobj *)(o))->u) | |
46 | #define DSA_P(o) (((dsa_pyobj *)(o))->p) | |
47 | #define DSA_RNG(o) (((dsa_pyobj *)(o))->rng) | |
48 | #define DSA_HASH(o) (((dsa_pyobj *)(o))->hash) | |
49 | ||
50 | static void dsa_pydealloc(PyObject *me) | |
51 | { | |
52 | dsa_pyobj *g = (dsa_pyobj *)me; | |
53 | Py_DECREF(g->G); Py_DECREF(g->u); Py_DECREF(g->p); | |
54 | Py_DECREF(g->rng); Py_DECREF(g->hash); | |
3aa33042 | 55 | FREEOBJ(me); |
d7ab1bab | 56 | } |
57 | ||
58 | static PyObject *dsa_setup(PyTypeObject *ty, PyObject *G, PyObject *u, | |
59 | PyObject *p, PyObject *rng, PyObject *hash) | |
60 | { | |
61 | dsa_pyobj *g; | |
62 | ||
63 | g = PyObject_New(dsa_pyobj, ty); | |
64 | if (GROUP_G(G) != GE_G(p) && !group_samep(GROUP_G(G), GE_G(p))) | |
65 | TYERR("public key not from group"); | |
66 | if (!u) { | |
67 | g->d.u = 0; | |
68 | u = Py_None; | |
69 | } else if ((g->d.u = getmp(u)) == 0) | |
70 | goto end; | |
71 | g->d.g = GROUP_G(G); | |
72 | g->d.p = GE_X(p); | |
73 | g->d.r = GRAND_R(rng); | |
74 | g->d.h = GCHASH_CH(hash); | |
75 | g->G = G; Py_INCREF(G); g->u = u; Py_INCREF(u); g->p = p; Py_INCREF(p); | |
9ca1789e | 76 | g->rng = rng; Py_INCREF(rng); g->hash = hash; Py_INCREF(hash); |
d7ab1bab | 77 | return ((PyObject *)g); |
78 | end: | |
3aa33042 | 79 | FREEOBJ(g); |
d7ab1bab | 80 | return (0); |
81 | } | |
82 | ||
83 | static PyObject *dsapub_pynew(PyTypeObject *ty, | |
84 | PyObject *arg, PyObject *kw) | |
85 | { | |
86 | PyObject *G, *p, *u = 0, *rng = rand_pyobj, *hash = sha_pyobj; | |
87 | PyObject *rc = 0; | |
88 | char *kwlist[] = { "G", "p", "u", "hash", "rng", 0 }; | |
89 | ||
9ca1789e | 90 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!O!|OO!O!:new", kwlist, |
d7ab1bab | 91 | group_pytype, &G, |
92 | ge_pytype, &p, | |
93 | &u, | |
94 | gchash_pytype, &hash, | |
95 | grand_pytype, &rng) || | |
96 | (rc = dsa_setup(dsapub_pytype, G, u, p, rng, hash)) == 0) | |
97 | goto end; | |
98 | end: | |
99 | return (rc); | |
100 | } | |
101 | ||
102 | static PyObject *dsameth_beginhash(PyObject *me, PyObject *arg) | |
103 | { | |
104 | if (!PyArg_ParseTuple(arg, ":beginhash")) return (0); | |
105 | return (ghash_pywrap(DSA_HASH(me), gdsa_beginhash(DSA_D(me)), f_freeme)); | |
106 | } | |
107 | ||
108 | static PyObject *dsameth_endhash(PyObject *me, PyObject *arg) | |
109 | { | |
110 | ghash *h; | |
111 | PyObject *rc; | |
112 | if (!PyArg_ParseTuple(arg, "O&:endhash", convghash, &h)) return (0); | |
113 | gdsa_endhash(DSA_D(me), h); | |
114 | h = GH_COPY(h); | |
115 | rc = bytestring_pywrap(0, GH_CLASS(h)->hashsz); | |
116 | GH_DONE(h, PyString_AS_STRING(rc)); | |
117 | GH_DESTROY(h); | |
118 | return (rc); | |
119 | } | |
120 | ||
121 | static PyObject *dsameth_sign(PyObject *me, PyObject *arg, PyObject *kw) | |
122 | { | |
123 | gdsa_sig s = GDSA_SIG_INIT; | |
124 | char *p; | |
125 | int n; | |
126 | mp *k = 0; | |
127 | PyObject *rc = 0; | |
128 | char *kwlist[] = { "msg", "k", 0 }; | |
129 | ||
130 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#|O&:sign", kwlist, | |
131 | &p, &n, convmp, &k)) | |
132 | goto end; | |
133 | if (n != DSA_D(me)->h->hashsz) | |
134 | VALERR("bad message length (doesn't match hash size)"); | |
135 | gdsa_sign(DSA_D(me), &s, p, k); | |
136 | rc = Py_BuildValue("(NN)", mp_pywrap(s.r), mp_pywrap(s.s)); | |
137 | end: | |
138 | mp_drop(k); | |
139 | return (rc); | |
140 | } | |
141 | ||
142 | static PyObject *dsameth_verify(PyObject *me, PyObject *arg) | |
143 | { | |
144 | char *p; | |
145 | int n; | |
146 | gdsa_sig s = GDSA_SIG_INIT; | |
147 | PyObject *rc = 0; | |
148 | ||
149 | if (!PyArg_ParseTuple(arg, "s#(O&O&):verify", | |
150 | &p, &n, convmp, &s.r, convmp, &s.s)) | |
151 | goto end; | |
152 | if (n != DSA_D(me)->h->hashsz) | |
153 | VALERR("bad message length (doesn't match hash size)"); | |
9ca1789e | 154 | rc = getbool(!gdsa_verify(DSA_D(me), &s, p)); |
d7ab1bab | 155 | end: |
156 | mp_drop(s.r); | |
157 | mp_drop(s.s); | |
158 | return (rc); | |
159 | } | |
160 | ||
161 | static PyObject *dsapriv_pynew(PyTypeObject *ty, | |
162 | PyObject *arg, PyObject *kw) | |
163 | { | |
164 | PyObject *G, *p, *u = Py_None, *rng = rand_pyobj, *hash = sha_pyobj; | |
165 | PyObject *rc = 0; | |
166 | char *kwlist[] = { "G", "p", "u", "hash", "rng", 0 }; | |
167 | ||
9ca1789e | 168 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!O!O|O!O!:new", kwlist, |
d7ab1bab | 169 | group_pytype, &G, |
170 | ge_pytype, &p, | |
171 | &u, | |
172 | gchash_pytype, &hash, | |
173 | grand_pytype, &rng) || | |
9ca1789e | 174 | (rc = dsa_setup(dsapriv_pytype, G, u, p, rng, hash)) == 0) |
d7ab1bab | 175 | goto end; |
176 | end: | |
177 | return (rc); | |
178 | } | |
179 | ||
180 | static PyMethodDef dsapub_pymethods[] = { | |
181 | #define METHNAME(name) dsameth_##name | |
182 | METH (beginhash, "D.beginhash() -> hash object") | |
183 | METH (endhash, "D.endhash(H) -> BYTES") | |
184 | METH (verify, "D.verify(MSG, (R, S)) -> true/false") | |
185 | #undef METHNAME | |
186 | { 0 } | |
187 | }; | |
188 | ||
189 | static PyMethodDef dsapriv_pymethods[] = { | |
190 | #define METHNAME(name) dsameth_##name | |
191 | KWMETH(sign, "D.sign(MSG, k = K) -> R, S") | |
192 | #undef METHNAME | |
193 | { 0 } | |
194 | }; | |
195 | ||
196 | static PyMemberDef dsapub_pymembers[] = { | |
197 | #define MEMBERSTRUCT dsa_pyobj | |
198 | MEMBER(G, T_OBJECT, READONLY, "D.G -> group to work in") | |
199 | MEMBER(p, T_OBJECT, READONLY, "D.p -> public key (group element") | |
200 | MEMBER(rng, T_OBJECT, READONLY, "D.rng -> random number generator") | |
b2687a0a | 201 | MEMBER(hash, T_OBJECT, READONLY, "D.hash -> hash class") |
d7ab1bab | 202 | #undef MEMBERSTRUCT |
203 | { 0 } | |
204 | }; | |
205 | ||
206 | static PyMemberDef dsapriv_pymembers[] = { | |
207 | #define MEMBERSTRUCT dsa_pyobj | |
208 | MEMBER(u, T_OBJECT, READONLY, "D.u -> private key (exponent)") | |
209 | #undef MEMBERSTRUCT | |
210 | { 0 } | |
211 | }; | |
212 | ||
213 | static PyTypeObject dsapub_pytype_skel = { | |
6d4db0bf | 214 | PyObject_HEAD_INIT(0) 0, /* Header */ |
d7ab1bab | 215 | "catacomb.DSAPub", /* @tp_name@ */ |
216 | sizeof(dsa_pyobj), /* @tp_basicsize@ */ | |
217 | 0, /* @tp_itemsize@ */ | |
218 | ||
219 | dsa_pydealloc, /* @tp_dealloc@ */ | |
220 | 0, /* @tp_print@ */ | |
221 | 0, /* @tp_getattr@ */ | |
222 | 0, /* @tp_setattr@ */ | |
223 | 0, /* @tp_compare@ */ | |
224 | 0, /* @tp_repr@ */ | |
225 | 0, /* @tp_as_number@ */ | |
226 | 0, /* @tp_as_sequence@ */ | |
227 | 0, /* @tp_as_mapping@ */ | |
228 | 0, /* @tp_hash@ */ | |
229 | 0, /* @tp_call@ */ | |
230 | 0, /* @tp_str@ */ | |
231 | 0, /* @tp_getattro@ */ | |
232 | 0, /* @tp_setattro@ */ | |
233 | 0, /* @tp_as_buffer@ */ | |
234 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
235 | Py_TPFLAGS_BASETYPE, | |
236 | ||
237 | /* @tp_doc@ */ | |
238 | "DSA public key information.", | |
239 | ||
240 | 0, /* @tp_traverse@ */ | |
241 | 0, /* @tp_clear@ */ | |
242 | 0, /* @tp_richcompare@ */ | |
243 | 0, /* @tp_weaklistoffset@ */ | |
244 | 0, /* @tp_iter@ */ | |
963a6148 | 245 | 0, /* @tp_iternext@ */ |
d7ab1bab | 246 | dsapub_pymethods, /* @tp_methods@ */ |
247 | dsapub_pymembers, /* @tp_members@ */ | |
248 | 0, /* @tp_getset@ */ | |
249 | 0, /* @tp_base@ */ | |
250 | 0, /* @tp_dict@ */ | |
251 | 0, /* @tp_descr_get@ */ | |
252 | 0, /* @tp_descr_set@ */ | |
253 | 0, /* @tp_dictoffset@ */ | |
254 | 0, /* @tp_init@ */ | |
255 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
256 | dsapub_pynew, /* @tp_new@ */ | |
3aa33042 | 257 | 0, /* @tp_free@ */ |
d7ab1bab | 258 | 0 /* @tp_is_gc@ */ |
259 | }; | |
260 | ||
261 | static PyTypeObject dsapriv_pytype_skel = { | |
6d4db0bf | 262 | PyObject_HEAD_INIT(0) 0, /* Header */ |
d7ab1bab | 263 | "catacomb.DSAPriv", /* @tp_name@ */ |
264 | sizeof(dsa_pyobj), /* @tp_basicsize@ */ | |
265 | 0, /* @tp_itemsize@ */ | |
266 | ||
267 | 0, /* @tp_dealloc@ */ | |
268 | 0, /* @tp_print@ */ | |
269 | 0, /* @tp_getattr@ */ | |
270 | 0, /* @tp_setattr@ */ | |
271 | 0, /* @tp_compare@ */ | |
272 | 0, /* @tp_repr@ */ | |
273 | 0, /* @tp_as_number@ */ | |
274 | 0, /* @tp_as_sequence@ */ | |
275 | 0, /* @tp_as_mapping@ */ | |
276 | 0, /* @tp_hash@ */ | |
277 | 0, /* @tp_call@ */ | |
278 | 0, /* @tp_str@ */ | |
279 | 0, /* @tp_getattro@ */ | |
280 | 0, /* @tp_setattro@ */ | |
281 | 0, /* @tp_as_buffer@ */ | |
282 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
283 | Py_TPFLAGS_BASETYPE, | |
284 | ||
285 | /* @tp_doc@ */ | |
286 | "DSA private key information.", | |
287 | ||
288 | 0, /* @tp_traverse@ */ | |
289 | 0, /* @tp_clear@ */ | |
290 | 0, /* @tp_richcompare@ */ | |
291 | 0, /* @tp_weaklistoffset@ */ | |
292 | 0, /* @tp_iter@ */ | |
963a6148 | 293 | 0, /* @tp_iternext@ */ |
d7ab1bab | 294 | dsapriv_pymethods, /* @tp_methods@ */ |
295 | dsapriv_pymembers, /* @tp_members@ */ | |
296 | 0, /* @tp_getset@ */ | |
297 | 0, /* @tp_base@ */ | |
298 | 0, /* @tp_dict@ */ | |
299 | 0, /* @tp_descr_get@ */ | |
300 | 0, /* @tp_descr_set@ */ | |
301 | 0, /* @tp_dictoffset@ */ | |
302 | 0, /* @tp_init@ */ | |
303 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
304 | dsapriv_pynew, /* @tp_new@ */ | |
3aa33042 | 305 | 0, /* @tp_free@ */ |
d7ab1bab | 306 | 0 /* @tp_is_gc@ */ |
307 | }; | |
308 | ||
309 | static PyObject *kcdsapub_pynew(PyTypeObject *ty, | |
310 | PyObject *arg, PyObject *kw) | |
311 | { | |
312 | PyObject *G, *p, *u = 0, *rng = rand_pyobj, *hash = has160_pyobj; | |
313 | PyObject *rc = 0; | |
314 | char *kwlist[] = { "G", "p", "u", "hash", "rng", 0 }; | |
315 | ||
9ca1789e | 316 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!O!O|O!O!:new", kwlist, |
d7ab1bab | 317 | group_pytype, &G, |
318 | ge_pytype, &p, | |
319 | &u, | |
320 | gchash_pytype, &hash, | |
321 | grand_pytype, &rng) || | |
9ca1789e | 322 | (rc = dsa_setup(kcdsapub_pytype, G, u, p, rng, hash)) == 0) |
d7ab1bab | 323 | goto end; |
324 | end: | |
325 | return (rc); | |
326 | } | |
327 | ||
328 | static PyObject *kcdsapriv_pynew(PyTypeObject *ty, | |
329 | PyObject *arg, PyObject *kw) | |
330 | { | |
331 | PyObject *G, *p, *u = Py_None, *rng = rand_pyobj, *hash = has160_pyobj; | |
332 | PyObject *rc = 0; | |
333 | char *kwlist[] = { "G", "p", "u", "hash", "rng", 0 }; | |
334 | ||
9ca1789e | 335 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O!O!|OO!O!:new", kwlist, |
d7ab1bab | 336 | group_pytype, &G, |
337 | ge_pytype, &p, | |
338 | &u, | |
339 | gchash_pytype, &hash, | |
340 | grand_pytype, &rng) || | |
9ca1789e | 341 | (rc = dsa_setup(kcdsapriv_pytype, G, u, p, rng, hash)) == 0) |
d7ab1bab | 342 | goto end; |
343 | end: | |
344 | return (rc); | |
345 | } | |
346 | ||
347 | static PyObject *kcdsameth_beginhash(PyObject *me, PyObject *arg) | |
348 | { | |
349 | if (!PyArg_ParseTuple(arg, ":beginhash")) return (0); | |
350 | return (ghash_pywrap(DSA_HASH(me), gkcdsa_beginhash(DSA_D(me)), f_freeme)); | |
351 | } | |
352 | ||
353 | static PyObject *kcdsameth_endhash(PyObject *me, PyObject *arg) | |
354 | { | |
355 | ghash *h; | |
356 | PyObject *rc; | |
357 | if (!PyArg_ParseTuple(arg, "O&:endhash", convghash, &h)) return (0); | |
358 | gkcdsa_endhash(DSA_D(me), h); | |
359 | h = GH_COPY(h); | |
360 | rc = bytestring_pywrap(0, GH_CLASS(h)->hashsz); | |
361 | GH_DONE(h, PyString_AS_STRING(rc)); | |
362 | GH_DESTROY(h); | |
363 | return (rc); | |
364 | } | |
365 | ||
366 | static PyObject *kcdsameth_sign(PyObject *me, PyObject *arg, PyObject *kw) | |
367 | { | |
368 | gkcdsa_sig s = GKCDSA_SIG_INIT; | |
369 | char *p; | |
370 | int n; | |
371 | mp *k = 0; | |
372 | PyObject *r = 0, *rc = 0; | |
373 | char *kwlist[] = { "msg", "k", 0 }; | |
374 | ||
375 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#|O&:sign", kwlist, | |
376 | &p, &n, convmp, &k)) | |
377 | goto end; | |
378 | if (n != DSA_D(me)->h->hashsz) | |
379 | VALERR("bad message length (doesn't match hash size)"); | |
380 | r = bytestring_pywrap(0, DSA_D(me)->h->hashsz); | |
46e6ad89 | 381 | s.r = (octet *)PyString_AS_STRING(r); |
d7ab1bab | 382 | gkcdsa_sign(DSA_D(me), &s, p, k); |
9ca1789e | 383 | rc = Py_BuildValue("(ON)", r, mp_pywrap(s.s)); |
d7ab1bab | 384 | end: |
385 | Py_XDECREF(r); | |
386 | mp_drop(k); | |
387 | return (rc); | |
388 | } | |
389 | ||
390 | static PyObject *kcdsameth_verify(PyObject *me, PyObject *arg) | |
391 | { | |
392 | char *p; | |
393 | int n, rn; | |
394 | gkcdsa_sig s = GKCDSA_SIG_INIT; | |
395 | PyObject *rc = 0; | |
396 | ||
397 | if (!PyArg_ParseTuple(arg, "s#(s#O&):verify", | |
398 | &p, &n, &s.r, &rn, convmp, &s.s)) | |
399 | goto end; | |
400 | if (n != DSA_D(me)->h->hashsz) | |
401 | VALERR("bad message length (doesn't match hash size)"); | |
402 | if (rn != DSA_D(me)->h->hashsz) | |
403 | VALERR("bad signature `r' length (doesn't match hash size)"); | |
9ca1789e | 404 | rc = getbool(!gkcdsa_verify(DSA_D(me), &s, p)); |
d7ab1bab | 405 | end: |
406 | mp_drop(s.s); | |
407 | return (rc); | |
408 | } | |
409 | ||
410 | static PyMethodDef kcdsapub_pymethods[] = { | |
411 | #define METHNAME(name) kcdsameth_##name | |
412 | METH (beginhash, "D.beginhash() -> hash object") | |
413 | METH (endhash, "D.endhash(H) -> BYTES") | |
414 | METH (verify, "D.verify(MSG, (R, S)) -> true/false") | |
415 | #undef METHNAME | |
416 | { 0 } | |
417 | }; | |
418 | ||
419 | static PyMethodDef kcdsapriv_pymethods[] = { | |
420 | #define METHNAME(name) kcdsameth_##name | |
421 | KWMETH(sign, "D.sign(MSG, k = K) -> R, S") | |
422 | #undef METHNAME | |
423 | { 0 } | |
424 | }; | |
425 | ||
426 | static PyTypeObject kcdsapub_pytype_skel = { | |
6d4db0bf | 427 | PyObject_HEAD_INIT(0) 0, /* Header */ |
d7ab1bab | 428 | "catacomb.KCDSAPub", /* @tp_name@ */ |
429 | sizeof(dsa_pyobj), /* @tp_basicsize@ */ | |
430 | 0, /* @tp_itemsize@ */ | |
431 | ||
432 | dsa_pydealloc, /* @tp_dealloc@ */ | |
433 | 0, /* @tp_print@ */ | |
434 | 0, /* @tp_getattr@ */ | |
435 | 0, /* @tp_setattr@ */ | |
436 | 0, /* @tp_compare@ */ | |
437 | 0, /* @tp_repr@ */ | |
438 | 0, /* @tp_as_number@ */ | |
439 | 0, /* @tp_as_sequence@ */ | |
440 | 0, /* @tp_as_mapping@ */ | |
441 | 0, /* @tp_hash@ */ | |
442 | 0, /* @tp_call@ */ | |
443 | 0, /* @tp_str@ */ | |
444 | 0, /* @tp_getattro@ */ | |
445 | 0, /* @tp_setattro@ */ | |
446 | 0, /* @tp_as_buffer@ */ | |
447 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
448 | Py_TPFLAGS_BASETYPE, | |
449 | ||
450 | /* @tp_doc@ */ | |
451 | "KCDSA public key information.", | |
452 | ||
453 | 0, /* @tp_traverse@ */ | |
454 | 0, /* @tp_clear@ */ | |
455 | 0, /* @tp_richcompare@ */ | |
456 | 0, /* @tp_weaklistoffset@ */ | |
457 | 0, /* @tp_iter@ */ | |
963a6148 | 458 | 0, /* @tp_iternext@ */ |
d7ab1bab | 459 | kcdsapub_pymethods, /* @tp_methods@ */ |
460 | dsapub_pymembers, /* @tp_members@ */ | |
461 | 0, /* @tp_getset@ */ | |
462 | 0, /* @tp_base@ */ | |
463 | 0, /* @tp_dict@ */ | |
464 | 0, /* @tp_descr_get@ */ | |
465 | 0, /* @tp_descr_set@ */ | |
466 | 0, /* @tp_dictoffset@ */ | |
467 | 0, /* @tp_init@ */ | |
468 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
469 | kcdsapub_pynew, /* @tp_new@ */ | |
3aa33042 | 470 | 0, /* @tp_free@ */ |
d7ab1bab | 471 | 0 /* @tp_is_gc@ */ |
472 | }; | |
473 | ||
474 | static PyTypeObject kcdsapriv_pytype_skel = { | |
6d4db0bf | 475 | PyObject_HEAD_INIT(0) 0, /* Header */ |
d7ab1bab | 476 | "catacomb.KCDSAPriv", /* @tp_name@ */ |
477 | sizeof(dsa_pyobj), /* @tp_basicsize@ */ | |
478 | 0, /* @tp_itemsize@ */ | |
479 | ||
480 | 0, /* @tp_dealloc@ */ | |
481 | 0, /* @tp_print@ */ | |
482 | 0, /* @tp_getattr@ */ | |
483 | 0, /* @tp_setattr@ */ | |
484 | 0, /* @tp_compare@ */ | |
485 | 0, /* @tp_repr@ */ | |
486 | 0, /* @tp_as_number@ */ | |
487 | 0, /* @tp_as_sequence@ */ | |
488 | 0, /* @tp_as_mapping@ */ | |
489 | 0, /* @tp_hash@ */ | |
490 | 0, /* @tp_call@ */ | |
491 | 0, /* @tp_str@ */ | |
492 | 0, /* @tp_getattro@ */ | |
493 | 0, /* @tp_setattro@ */ | |
494 | 0, /* @tp_as_buffer@ */ | |
495 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
496 | Py_TPFLAGS_BASETYPE, | |
497 | ||
498 | /* @tp_doc@ */ | |
499 | "KCDSA private key information.", | |
500 | ||
501 | 0, /* @tp_traverse@ */ | |
502 | 0, /* @tp_clear@ */ | |
503 | 0, /* @tp_richcompare@ */ | |
504 | 0, /* @tp_weaklistoffset@ */ | |
505 | 0, /* @tp_iter@ */ | |
963a6148 | 506 | 0, /* @tp_iternext@ */ |
d7ab1bab | 507 | kcdsapriv_pymethods, /* @tp_methods@ */ |
508 | dsapriv_pymembers, /* @tp_members@ */ | |
509 | 0, /* @tp_getset@ */ | |
510 | 0, /* @tp_base@ */ | |
511 | 0, /* @tp_dict@ */ | |
512 | 0, /* @tp_descr_get@ */ | |
513 | 0, /* @tp_descr_set@ */ | |
514 | 0, /* @tp_dictoffset@ */ | |
515 | 0, /* @tp_init@ */ | |
516 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
517 | kcdsapriv_pynew, /* @tp_new@ */ | |
3aa33042 | 518 | 0, /* @tp_free@ */ |
d7ab1bab | 519 | 0 /* @tp_is_gc@ */ |
520 | }; | |
521 | ||
522 | /*----- RSA ---------------------------------------------------------------*/ | |
523 | ||
524 | typedef struct rsapub_pyobj { | |
525 | PyObject_HEAD | |
526 | rsa_pub pub; | |
527 | rsa_pubctx pubctx; | |
528 | } rsapub_pyobj; | |
529 | ||
530 | #define RSA_PUB(o) (&((rsapub_pyobj *)(o))->pub) | |
531 | #define RSA_PUBCTX(o) (&((rsapub_pyobj *)(o))->pubctx) | |
532 | ||
533 | typedef struct rsapriv_pyobj { | |
534 | PyObject_HEAD | |
535 | rsa_pub pub; | |
536 | rsa_pubctx pubctx; | |
537 | rsa_priv priv; | |
538 | rsa_privctx privctx; | |
539 | PyObject *rng; | |
540 | } rsapriv_pyobj; | |
541 | ||
542 | #define RSA_PRIV(o) (&((rsapriv_pyobj *)(o))->priv) | |
543 | #define RSA_PRIVCTX(o) (&((rsapriv_pyobj *)(o))->privctx) | |
544 | #define RSA_RNG(o) (((rsapriv_pyobj *)(o))->rng) | |
545 | ||
546 | static PyTypeObject *rsapub_pytype, *rsapriv_pytype; | |
547 | ||
548 | static PyObject *rsapub_pynew(PyTypeObject *ty, | |
549 | PyObject *arg, PyObject *kw) | |
550 | { | |
551 | rsa_pub rp = { 0 }; | |
552 | rsapub_pyobj *o; | |
553 | char *kwlist[] = { "n", "e", 0 }; | |
554 | ||
555 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", kwlist, | |
556 | convmp, &rp.n, convmp, &rp.e)) | |
557 | goto end; | |
558 | o = (rsapub_pyobj *)ty->tp_alloc(ty, 0); | |
559 | o->pub = rp; | |
560 | rsa_pubcreate(&o->pubctx, &o->pub); | |
561 | return ((PyObject *)o); | |
562 | end: | |
563 | rsa_pubfree(&rp); | |
564 | return (0); | |
565 | } | |
566 | ||
567 | static void rsapub_pydealloc(PyObject *me) | |
568 | { | |
569 | rsa_pubdestroy(RSA_PUBCTX(me)); | |
570 | rsa_pubfree(RSA_PUB(me)); | |
3aa33042 | 571 | FREEOBJ(me); |
d7ab1bab | 572 | } |
573 | ||
574 | static PyObject *rsaget_n(PyObject *me, void *hunoz) | |
575 | { return mp_pywrap(MP_COPY(RSA_PUB(me)->n)); } | |
576 | ||
577 | static PyObject *rsaget_e(PyObject *me, void *hunoz) | |
578 | { return mp_pywrap(MP_COPY(RSA_PUB(me)->e)); } | |
579 | ||
580 | static PyObject *rsameth_pubop(PyObject *me, PyObject *arg) | |
581 | { | |
582 | mp *x = 0; | |
583 | PyObject *rc = 0; | |
584 | ||
585 | if (!PyArg_ParseTuple(arg, "O&:pubop", convmp, &x)) goto end; | |
586 | rc = mp_pywrap(rsa_pubop(RSA_PUBCTX(me), MP_NEW, x)); | |
587 | end: | |
588 | mp_drop(x); | |
589 | return (rc); | |
590 | } | |
591 | ||
592 | static PyObject *rsapriv_dopywrap(PyTypeObject *ty, | |
593 | rsa_priv *rp, PyObject *rng) | |
594 | { | |
595 | rsapriv_pyobj *o; | |
596 | ||
597 | o = (rsapriv_pyobj *)ty->tp_alloc(ty, 0); | |
598 | o->priv = *rp; | |
599 | o->pub.n = rp->n; | |
600 | o->pub.e = rp->e; | |
601 | rsa_privcreate(&o->privctx, &o->priv, &rand_global); | |
602 | rsa_pubcreate(&o->pubctx, &o->pub); | |
603 | if (!rng) { | |
604 | rng = Py_None; | |
605 | Py_INCREF(rng); | |
606 | } | |
607 | o->rng = rng; | |
608 | return ((PyObject *)o); | |
609 | } | |
610 | ||
611 | PyObject *rsapriv_pywrap(rsa_priv *rp) | |
612 | { return rsapriv_dopywrap(rsapriv_pytype, rp, 0); } | |
613 | ||
614 | static PyObject *rsapriv_pynew(PyTypeObject *ty, | |
615 | PyObject *arg, PyObject *kw) | |
616 | { | |
617 | rsa_priv rp = { 0 }; | |
618 | PyObject *rng = Py_None; | |
619 | char *kwlist[] = | |
620 | { "n", "e", "d", "p", "q", "dp", "dq", "q_inv", "rng", 0 }; | |
621 | ||
622 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&O&O&O&O&O&O&O&O:new", kwlist, | |
623 | convmp, &rp.n, convmp, &rp.e, | |
624 | convmp, &rp.d, | |
625 | convmp, &rp.p, convmp, &rp.q, | |
626 | convmp, &rp.dp, convmp, &rp.dq, | |
627 | convmp, &rp.q_inv, | |
628 | &rng)) | |
629 | goto end; | |
630 | if (rsa_recover(&rp)) VALERR("couldn't construct private key"); | |
631 | if (rng != Py_None && !GRAND_PYCHECK(rng)) | |
632 | TYERR("not a random number source"); | |
633 | Py_INCREF(rng); | |
634 | return (rsapriv_dopywrap(ty, &rp, rng)); | |
635 | end: | |
636 | rsa_privfree(&rp); | |
637 | return (0); | |
638 | } | |
639 | ||
640 | static void rsapriv_pydealloc(PyObject *me) | |
641 | { | |
642 | RSA_PRIVCTX(me)->r = &rand_global; | |
643 | rsa_privdestroy(RSA_PRIVCTX(me)); | |
644 | rsa_privfree(RSA_PRIV(me)); | |
645 | Py_DECREF(RSA_RNG(me)); | |
3aa33042 | 646 | FREEOBJ(me); |
d7ab1bab | 647 | } |
648 | ||
649 | static PyObject *rsaget_d(PyObject *me, void *hunoz) | |
650 | { return mp_pywrap(MP_COPY(RSA_PRIV(me)->d)); } | |
651 | ||
652 | static PyObject *rsaget_p(PyObject *me, void *hunoz) | |
653 | { return mp_pywrap(MP_COPY(RSA_PRIV(me)->p)); } | |
654 | ||
655 | static PyObject *rsaget_q(PyObject *me, void *hunoz) | |
656 | { return mp_pywrap(MP_COPY(RSA_PRIV(me)->q)); } | |
657 | ||
658 | static PyObject *rsaget_dp(PyObject *me, void *hunoz) | |
659 | { return mp_pywrap(MP_COPY(RSA_PRIV(me)->dp)); } | |
660 | ||
661 | static PyObject *rsaget_dq(PyObject *me, void *hunoz) | |
662 | { return mp_pywrap(MP_COPY(RSA_PRIV(me)->dq)); } | |
663 | ||
664 | static PyObject *rsaget_q_inv(PyObject *me, void *hunoz) | |
665 | { return mp_pywrap(MP_COPY(RSA_PRIV(me)->q_inv)); } | |
666 | ||
667 | static PyObject *rsaget_rng(PyObject *me, void *hunoz) | |
668 | { RETURN_OBJ(RSA_RNG(me)); } | |
669 | ||
670 | static int rsaset_rng(PyObject *me, PyObject *val, void *hunoz) | |
671 | { | |
672 | int rc = -1; | |
f368b46e MW |
673 | if (!val) |
674 | val = Py_None; | |
675 | else if (val != Py_None && !GRAND_PYCHECK(val)) | |
d7ab1bab | 676 | TYERR("expected grand or None"); |
677 | Py_DECREF(RSA_RNG(me)); | |
678 | RSA_RNG(me) = val; | |
679 | Py_INCREF(val); | |
680 | rc = 0; | |
681 | end: | |
682 | return (rc); | |
683 | } | |
684 | ||
685 | static PyObject *rsameth_privop(PyObject *me, PyObject *arg, PyObject *kw) | |
686 | { | |
687 | PyObject *rng = RSA_RNG(me); | |
688 | mp *x = 0; | |
689 | PyObject *rc = 0; | |
690 | char *kwlist[] = { "x", "rng", 0 }; | |
691 | ||
692 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&|O:privop", kwlist, | |
693 | convmp, &x, &rng)) | |
694 | goto end; | |
695 | if (rng != Py_None && !GRAND_PYCHECK(rng)) | |
696 | TYERR("not a random number source"); | |
697 | RSA_PRIVCTX(me)->r = (rng == Py_None) ? 0 : GRAND_R(rng); | |
698 | rc = mp_pywrap(rsa_privop(RSA_PRIVCTX(me), MP_NEW, x)); | |
699 | end: | |
700 | mp_drop(x); | |
701 | return (rc); | |
702 | } | |
703 | ||
704 | static PyObject *meth__RSAPriv_generate(PyObject *me, | |
705 | PyObject *arg, PyObject *kw) | |
706 | { | |
707 | grand *r = &rand_global; | |
708 | unsigned nbits; | |
709 | unsigned n = 0; | |
710 | rsa_priv rp; | |
711 | pgev evt = { 0 }; | |
712 | char *kwlist[] = { "class", "nbits", "event", "rng", "nsteps", 0 }; | |
713 | PyObject *rc = 0; | |
714 | ||
715 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&|O&O&O&:generate", kwlist, | |
716 | &me, convuint, &nbits, convpgev, &evt, | |
717 | convgrand, &r, convuint, &n)) | |
718 | goto end; | |
719 | if (rsa_gen(&rp, nbits, r, n, evt.proc, evt.ctx)) | |
720 | PGENERR; | |
721 | rc = rsapriv_pywrap(&rp); | |
722 | end: | |
723 | droppgev(&evt); | |
724 | return (rc); | |
725 | } | |
726 | ||
727 | static PyGetSetDef rsapub_pygetset[] = { | |
728 | #define GETSETNAME(op, name) rsa##op##_##name | |
729 | GET (n, "R.n -> N") | |
730 | GET (e, "R.e -> E") | |
731 | #undef GETSETNAME | |
732 | { 0 } | |
733 | }; | |
734 | ||
735 | static PyMethodDef rsapub_pymethods[] = { | |
736 | #define METHNAME(name) rsameth_##name | |
737 | METH (pubop, "R.pubop(X) -> X^E (mod N)") | |
738 | #undef METHNAME | |
739 | { 0 } | |
740 | }; | |
741 | ||
742 | static PyGetSetDef rsapriv_pygetset[] = { | |
743 | #define GETSETNAME(op, name) rsa##op##_##name | |
744 | GET (d, "R.d -> D") | |
745 | GET (p, "R.p -> P") | |
746 | GET (q, "R.q -> Q") | |
747 | GET (dp, "R.dp -> D mod (P - 1)") | |
748 | GET (dq, "R.dq -> D mod (Q - 1)") | |
749 | GET (q_inv, "R.q_inv -> Q^{-1} mod P") | |
750 | GETSET(rng, "R.rng -> random number source for blinding") | |
751 | #undef GETSETNAME | |
752 | { 0 } | |
753 | }; | |
754 | ||
755 | static PyMethodDef rsapriv_pymethods[] = { | |
756 | #define METHNAME(name) rsameth_##name | |
757 | KWMETH(privop, "R.privop(X, rng = None) -> X^D (mod N)") | |
758 | #undef METHNAME | |
759 | { 0 } | |
760 | }; | |
761 | ||
762 | static PyTypeObject rsapub_pytype_skel = { | |
6d4db0bf | 763 | PyObject_HEAD_INIT(0) 0, /* Header */ |
d7ab1bab | 764 | "catacomb.RSAPub", /* @tp_name@ */ |
765 | sizeof(rsapub_pyobj), /* @tp_basicsize@ */ | |
766 | 0, /* @tp_itemsize@ */ | |
767 | ||
768 | rsapub_pydealloc, /* @tp_dealloc@ */ | |
769 | 0, /* @tp_print@ */ | |
770 | 0, /* @tp_getattr@ */ | |
771 | 0, /* @tp_setattr@ */ | |
772 | 0, /* @tp_compare@ */ | |
773 | 0, /* @tp_repr@ */ | |
774 | 0, /* @tp_as_number@ */ | |
775 | 0, /* @tp_as_sequence@ */ | |
776 | 0, /* @tp_as_mapping@ */ | |
777 | 0, /* @tp_hash@ */ | |
778 | 0, /* @tp_call@ */ | |
779 | 0, /* @tp_str@ */ | |
780 | 0, /* @tp_getattro@ */ | |
781 | 0, /* @tp_setattro@ */ | |
782 | 0, /* @tp_as_buffer@ */ | |
783 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
784 | Py_TPFLAGS_BASETYPE, | |
785 | ||
786 | /* @tp_doc@ */ | |
787 | "RSA public key information.", | |
788 | ||
789 | 0, /* @tp_traverse@ */ | |
790 | 0, /* @tp_clear@ */ | |
791 | 0, /* @tp_richcompare@ */ | |
792 | 0, /* @tp_weaklistoffset@ */ | |
793 | 0, /* @tp_iter@ */ | |
963a6148 | 794 | 0, /* @tp_iternext@ */ |
d7ab1bab | 795 | rsapub_pymethods, /* @tp_methods@ */ |
796 | 0, /* @tp_members@ */ | |
797 | rsapub_pygetset, /* @tp_getset@ */ | |
798 | 0, /* @tp_base@ */ | |
799 | 0, /* @tp_dict@ */ | |
800 | 0, /* @tp_descr_get@ */ | |
801 | 0, /* @tp_descr_set@ */ | |
802 | 0, /* @tp_dictoffset@ */ | |
803 | 0, /* @tp_init@ */ | |
804 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
805 | rsapub_pynew, /* @tp_new@ */ | |
3aa33042 | 806 | 0, /* @tp_free@ */ |
d7ab1bab | 807 | 0 /* @tp_is_gc@ */ |
808 | }; | |
809 | ||
810 | static PyTypeObject rsapriv_pytype_skel = { | |
6d4db0bf | 811 | PyObject_HEAD_INIT(0) 0, /* Header */ |
d7ab1bab | 812 | "catacomb.RSAPriv", /* @tp_name@ */ |
813 | sizeof(rsapriv_pyobj), /* @tp_basicsize@ */ | |
814 | 0, /* @tp_itemsize@ */ | |
815 | ||
816 | rsapriv_pydealloc, /* @tp_dealloc@ */ | |
817 | 0, /* @tp_print@ */ | |
818 | 0, /* @tp_getattr@ */ | |
819 | 0, /* @tp_setattr@ */ | |
820 | 0, /* @tp_compare@ */ | |
821 | 0, /* @tp_repr@ */ | |
822 | 0, /* @tp_as_number@ */ | |
823 | 0, /* @tp_as_sequence@ */ | |
824 | 0, /* @tp_as_mapping@ */ | |
825 | 0, /* @tp_hash@ */ | |
826 | 0, /* @tp_call@ */ | |
827 | 0, /* @tp_str@ */ | |
828 | 0, /* @tp_getattro@ */ | |
829 | 0, /* @tp_setattro@ */ | |
830 | 0, /* @tp_as_buffer@ */ | |
831 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
832 | Py_TPFLAGS_BASETYPE, | |
833 | ||
834 | /* @tp_doc@ */ | |
835 | "RSA private key information.", | |
836 | ||
837 | 0, /* @tp_traverse@ */ | |
838 | 0, /* @tp_clear@ */ | |
839 | 0, /* @tp_richcompare@ */ | |
840 | 0, /* @tp_weaklistoffset@ */ | |
841 | 0, /* @tp_iter@ */ | |
963a6148 | 842 | 0, /* @tp_iternext@ */ |
d7ab1bab | 843 | rsapriv_pymethods, /* @tp_methods@ */ |
844 | 0, /* @tp_members@ */ | |
845 | rsapriv_pygetset, /* @tp_getset@ */ | |
846 | 0, /* @tp_base@ */ | |
847 | 0, /* @tp_dict@ */ | |
848 | 0, /* @tp_descr_get@ */ | |
849 | 0, /* @tp_descr_set@ */ | |
850 | 0, /* @tp_dictoffset@ */ | |
851 | 0, /* @tp_init@ */ | |
852 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
853 | rsapriv_pynew, /* @tp_new@ */ | |
3aa33042 | 854 | 0, /* @tp_free@ */ |
d7ab1bab | 855 | 0 /* @tp_is_gc@ */ |
856 | }; | |
857 | ||
858 | /*----- RSA padding schemes -----------------------------------------------*/ | |
859 | ||
860 | static PyObject *meth__p1crypt_encode(PyObject *me, | |
861 | PyObject *arg, PyObject *kw) | |
862 | { | |
863 | pkcs1 p1; | |
864 | char *m, *ep; | |
865 | int msz, epsz; | |
866 | unsigned long nbits; | |
867 | PyObject *rc = 0; | |
868 | octet *b = 0; | |
869 | size_t sz; | |
870 | mp *x; | |
871 | char *kwlist[] = { "msg", "nbits", "ep", "rng", 0 }; | |
872 | ||
873 | p1.r = &rand_global; ep = 0; epsz = 0; | |
874 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&|s#O&:encode", kwlist, | |
875 | &m, &msz, convulong, &nbits, | |
876 | &ep, &epsz, convgrand, &p1.r)) | |
877 | goto end; | |
878 | sz = (nbits + 7)/8; | |
879 | p1.ep = ep; p1.epsz = epsz; | |
880 | if (epsz + msz + 11 > sz) VALERR("buffer underflow"); | |
881 | b = xmalloc(sz); | |
882 | x = pkcs1_cryptencode(MP_NEW, m, msz, b, sz, nbits, &p1); | |
883 | rc = mp_pywrap(x); | |
884 | end: | |
885 | xfree(b); | |
886 | return (rc); | |
887 | } | |
888 | ||
889 | static PyObject *meth__p1crypt_decode(PyObject *me, | |
890 | PyObject *arg, PyObject *kw) | |
891 | { | |
892 | pkcs1 p1; | |
893 | char *ep; | |
894 | int epsz; | |
895 | unsigned long nbits; | |
896 | int n; | |
897 | PyObject *rc = 0; | |
898 | octet *b = 0; | |
899 | size_t sz; | |
900 | mp *x = 0; | |
901 | char *kwlist[] = { "ct", "nbits", "ep", "rng", 0 }; | |
902 | ||
903 | p1.r = &rand_global; ep = 0; epsz = 0; | |
904 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|s#O&:decode", kwlist, | |
905 | convmp, &x, convulong, &nbits, | |
906 | &ep, &epsz, convgrand, &p1.r)) | |
907 | goto end; | |
908 | sz = (nbits + 7)/8; | |
909 | p1.ep = ep; p1.epsz = epsz; | |
910 | if (epsz + 11 > sz) VALERR("buffer underflow"); | |
911 | b = xmalloc(sz); | |
912 | if ((n = pkcs1_cryptdecode(x, b, sz, nbits, &p1)) < 0) | |
913 | VALERR("decryption failed"); | |
914 | rc = bytestring_pywrap(b, n); | |
915 | end: | |
916 | mp_drop(x); | |
917 | xfree(b); | |
918 | return (rc); | |
919 | } | |
920 | ||
921 | static PyObject *meth__p1sig_encode(PyObject *me, | |
922 | PyObject *arg, PyObject *kw) | |
923 | { | |
924 | pkcs1 p1; | |
925 | char *m, *ep; | |
926 | int msz, epsz; | |
927 | unsigned long nbits; | |
928 | PyObject *rc = 0; | |
929 | octet *b = 0; | |
930 | size_t sz; | |
931 | mp *x; | |
932 | char *kwlist[] = { "msg", "nbits", "ep", "rng", 0 }; | |
933 | ||
934 | p1.r = &rand_global; ep = 0; epsz = 0; | |
935 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&|s#O&:encode", kwlist, | |
936 | &m, &msz, convulong, &nbits, | |
937 | &ep, &epsz, convgrand, &p1.r)) | |
938 | goto end; | |
939 | sz = (nbits + 7)/8; | |
940 | p1.ep = ep; p1.epsz = epsz; | |
941 | if (epsz + msz + 11 > sz) VALERR("buffer underflow"); | |
942 | b = xmalloc(sz); | |
943 | x = pkcs1_sigencode(MP_NEW, m, msz, b, sz, nbits, &p1); | |
944 | rc = mp_pywrap(x); | |
945 | end: | |
946 | xfree(b); | |
947 | return (rc); | |
948 | } | |
949 | ||
950 | static PyObject *meth__p1sig_decode(PyObject *me, | |
951 | PyObject *arg, PyObject *kw) | |
952 | { | |
953 | pkcs1 p1; | |
954 | char *ep; | |
955 | int epsz; | |
956 | unsigned long nbits; | |
957 | int n; | |
958 | PyObject *hukairz; | |
959 | PyObject *rc = 0; | |
960 | octet *b = 0; | |
961 | size_t sz; | |
962 | mp *x = 0; | |
963 | char *kwlist[] = { "msg", "sig", "nbits", "ep", "rng", 0 }; | |
964 | ||
965 | p1.r = &rand_global; ep = 0; epsz = 0; | |
966 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO&O&|s#O&:decode", kwlist, | |
967 | &hukairz, convmp, &x, convulong, &nbits, | |
968 | &ep, &epsz, convgrand, &p1.r)) | |
969 | goto end; | |
970 | sz = (nbits + 7)/8; | |
971 | p1.ep = ep; p1.epsz = epsz; | |
972 | if (epsz + 10 > sz) VALERR("buffer underflow"); | |
973 | b = xmalloc(sz); | |
974 | if ((n = pkcs1_sigdecode(x, 0, 0, b, sz, nbits, &p1)) < 0) | |
975 | VALERR("verification failed"); | |
976 | rc = bytestring_pywrap(b, n); | |
977 | end: | |
978 | mp_drop(x); | |
979 | xfree(b); | |
980 | return (rc); | |
981 | } | |
982 | ||
983 | static PyObject *meth__oaep_encode(PyObject *me, | |
984 | PyObject *arg, PyObject *kw) | |
985 | { | |
986 | oaep o; | |
987 | char *m, *ep; | |
988 | int msz, epsz; | |
989 | unsigned long nbits; | |
990 | PyObject *rc = 0; | |
991 | octet *b = 0; | |
992 | size_t sz; | |
993 | mp *x; | |
994 | char *kwlist[] = { "msg", "nbits", "mgf", "hash", "ep", "rng", 0 }; | |
995 | ||
996 | o.r = &rand_global; o.cc = &sha_mgf; o.ch = &sha; ep = 0; epsz = 0; | |
997 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&|O&O&s#O&:encode", kwlist, | |
998 | &m, &msz, convulong, &nbits, | |
999 | convgccipher, &o.cc, | |
1000 | convgchash, &o.ch, | |
1001 | &ep, &epsz, | |
1002 | convgrand, &o.r)) | |
1003 | goto end; | |
1004 | sz = (nbits + 7)/8; | |
1005 | o.ep = ep; o.epsz = epsz; | |
1006 | if (2 * o.ch->hashsz + 2 + msz > sz) VALERR("buffer underflow"); | |
1007 | b = xmalloc(sz); | |
1008 | x = oaep_encode(MP_NEW, m, msz, b, sz, nbits, &o); | |
1009 | rc = mp_pywrap(x); | |
1010 | end: | |
1011 | xfree(b); | |
1012 | return (rc); | |
1013 | } | |
1014 | ||
1015 | static PyObject *meth__oaep_decode(PyObject *me, | |
1016 | PyObject *arg, PyObject *kw) | |
1017 | { | |
1018 | oaep o; | |
1019 | char *ep; | |
1020 | int epsz; | |
1021 | unsigned long nbits; | |
1022 | int n; | |
1023 | PyObject *rc = 0; | |
1024 | octet *b = 0; | |
1025 | size_t sz; | |
1026 | mp *x = 0; | |
1027 | char *kwlist[] = { "ct", "nbits", "mgf", "hash", "ep", "rng", 0 }; | |
1028 | ||
1029 | o.r = &rand_global; o.cc = &sha_mgf; o.ch = &sha; ep = 0; epsz = 0; | |
1030 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&s#O&:decode", kwlist, | |
1031 | convmp, &x, convulong, &nbits, | |
1032 | convgccipher, &o.cc, | |
1033 | convgchash, &o.ch, | |
1034 | &ep, &epsz, | |
1035 | convgrand, &o.r)) | |
1036 | goto end; | |
1037 | sz = (nbits + 7)/8; | |
1038 | o.ep = ep; o.epsz = epsz; | |
1039 | if (2 * o.ch->hashsz > sz) VALERR("buffer underflow"); | |
1040 | b = xmalloc(sz); | |
1041 | if ((n = oaep_decode(x, b, sz, nbits, &o)) < 0) | |
1042 | VALERR("decryption failed"); | |
1043 | rc = bytestring_pywrap(b, n); | |
1044 | end: | |
1045 | mp_drop(x); | |
1046 | xfree(b); | |
1047 | return (rc); | |
1048 | } | |
1049 | ||
1050 | static PyObject *meth__pss_encode(PyObject *me, | |
1051 | PyObject *arg, PyObject *kw) | |
1052 | { | |
1053 | pss p; | |
1054 | char *m; | |
1055 | int msz; | |
1056 | unsigned long nbits; | |
1057 | PyObject *rc = 0; | |
1058 | octet *b = 0; | |
1059 | size_t sz; | |
1060 | mp *x = 0; | |
1061 | char *kwlist[] = { "msg", "nbits", "mgf", "hash", "saltsz", "rng", 0 }; | |
1062 | ||
1063 | p.cc = &sha_mgf; p.ch = &sha; p.r = &rand_global; p.ssz = (size_t)-1; | |
1064 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&|O&O&O&O&:encode", kwlist, | |
1065 | &m, &msz, convulong, &nbits, | |
1066 | convgccipher, &p.cc, | |
1067 | convgchash, &p.ch, | |
1068 | convszt, &p.ssz, | |
1069 | convgrand, &p.r)) | |
1070 | goto end; | |
1071 | sz = (nbits + 7)/8; | |
1072 | if (p.ssz == (size_t)-1) p.ssz = p.ch->hashsz; | |
1073 | if (p.ch->hashsz + p.ssz + 2 > sz) VALERR("buffer underflow"); | |
1074 | b = xmalloc(sz); | |
1075 | x = pss_encode(MP_NEW, m, msz, b, sz, nbits, &p); | |
1076 | rc = mp_pywrap(x); | |
1077 | end: | |
1078 | xfree(b); | |
1079 | return (rc); | |
1080 | } | |
1081 | ||
1082 | static PyObject *meth__pss_decode(PyObject *me, | |
1083 | PyObject *arg, PyObject *kw) | |
1084 | { | |
1085 | pss p; | |
1086 | char *m; | |
1087 | int msz; | |
1088 | unsigned long nbits; | |
1089 | PyObject *rc = 0; | |
1090 | octet *b = 0; | |
1091 | size_t sz; | |
1092 | int n; | |
1093 | mp *x = 0; | |
1094 | char *kwlist[] = | |
1095 | { "msg", "sig", "nbits", "mgf", "hash", "saltsz", "rng", 0 }; | |
1096 | ||
1097 | p.cc = &sha_mgf; p.ch = &sha; p.r = &rand_global; p.ssz = (size_t)-1; | |
1098 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#O&O&|O&O&O&O&:decode", kwlist, | |
1099 | &m, &msz, convmp, &x, convulong, &nbits, | |
1100 | convgccipher, &p.cc, | |
1101 | convgchash, &p.ch, | |
1102 | convszt, &p.ssz, | |
1103 | convgrand, &p.r)) | |
1104 | goto end; | |
1105 | sz = (nbits + 7)/8; | |
1106 | if (p.ssz == (size_t)-1) p.ssz = p.ch->hashsz; | |
1107 | if (p.ch->hashsz + p.ssz + 2 > sz) VALERR("buffer underflow"); | |
1108 | b = xmalloc(sz); | |
1109 | if ((n = pss_decode(x, m, msz, b, sz, nbits, &p)) < 0) | |
1110 | VALERR("verification failed"); | |
1111 | rc = Py_None; Py_INCREF(rc); | |
1112 | end: | |
1113 | mp_drop(x); | |
1114 | xfree(b); | |
1115 | return (rc); | |
1116 | } | |
1117 | ||
1118 | /*----- Global stuff ------------------------------------------------------*/ | |
1119 | ||
1120 | static PyMethodDef methods[] = { | |
1121 | #define METHNAME(name) meth_##name | |
1122 | KWMETH(_p1crypt_encode, 0) | |
1123 | KWMETH(_p1crypt_decode, 0) | |
1124 | KWMETH(_p1sig_encode, 0) | |
1125 | KWMETH(_p1sig_decode, 0) | |
1126 | KWMETH(_oaep_encode, 0) | |
1127 | KWMETH(_oaep_decode, 0) | |
1128 | KWMETH(_pss_encode, 0) | |
1129 | KWMETH(_pss_decode, 0) | |
1130 | KWMETH(_RSAPriv_generate, "\ | |
1131 | generate(NBITS, [event = pgen_nullev, rng = rand, nsteps = 0]) -> R") | |
1132 | #undef METHNAME | |
1133 | { 0 } | |
1134 | }; | |
1135 | ||
1136 | void pubkey_pyinit(void) | |
1137 | { | |
1138 | INITTYPE(dsapub, root); | |
1139 | INITTYPE(dsapriv, dsapub); | |
1140 | INITTYPE(kcdsapub, root); | |
1141 | INITTYPE(kcdsapriv, kcdsapub); | |
1142 | INITTYPE(rsapub, root); | |
1143 | INITTYPE(rsapriv, rsapub); | |
1144 | addmethods(methods); | |
1145 | } | |
1146 | ||
1147 | void pubkey_pyinsert(PyObject *mod) | |
1148 | { | |
1149 | INSERT("DSAPub", dsapub_pytype); | |
1150 | INSERT("DSAPriv", dsapriv_pytype); | |
1151 | INSERT("KCDSAPub", kcdsapub_pytype); | |
1152 | INSERT("KCDSAPriv", kcdsapriv_pytype); | |
1153 | INSERT("RSAPub", rsapub_pytype); | |
1154 | INSERT("RSAPriv", rsapriv_pytype); | |
1155 | } | |
1156 | ||
1157 | /*----- That's all, folks -------------------------------------------------*/ |