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catacomb-python.h, util.c: Support for declaring types with weird metatypes.
[catacomb-python] / algorithms.c
CommitLineData
d7ab1bab 1/* -*-c-*-
2 *
d7ab1bab 3 * Symmetric cryptography
4 *
5 * (c) 2004 Straylight/Edgeware
6 */
7
b2687a0a 8/*----- Licensing notice --------------------------------------------------*
d7ab1bab 9 *
10 * This file is part of the Python interface to Catacomb.
11 *
12 * Catacomb/Python is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
b2687a0a 16 *
d7ab1bab 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.
b2687a0a 21 *
d7ab1bab 22 * You should have received a copy of the GNU General Public License
23 * along with Catacomb/Python; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 */
26
27/*----- Header files ------------------------------------------------------*/
28
29#include "catacomb-python.h"
30#include "algorithms.h"
31
32/*----- Key sizes ---------------------------------------------------------*/
33
34PyTypeObject *keysz_pytype;
35PyTypeObject *keyszany_pytype, *keyszrange_pytype, *keyszset_pytype;
36PyObject *sha_pyobj, *has160_pyobj;
37
38PyObject *keysz_pywrap(const octet *k)
39{
40 switch (k[0]) {
41 case KSZ_ANY: {
42 keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype);
43 o->dfl = k[1];
44 return ((PyObject *)o);
45 } break;
46 case KSZ_RANGE: {
47 keyszrange_pyobj *o =
b2687a0a 48 PyObject_New(keyszrange_pyobj, keyszrange_pytype);
d7ab1bab 49 o->dfl = k[1];
50 o->min = k[2];
51 o->max = k[3];
52 o->mod = k[4];
53 if (!o->mod) o->mod = 1;
54 return ((PyObject *)o);
55 } break;
56 case KSZ_SET: {
57 keyszset_pyobj *o =
b2687a0a 58 PyObject_New(keyszset_pyobj, keyszset_pytype);
d7ab1bab 59 int i, n;
60 o->dfl = k[1];
61 for (i = 0; k[i + 1]; i++) ;
62 n = i; o->set = PyTuple_New(n);
63 for (i = 0; i < n; i++)
64 PyTuple_SET_ITEM(o->set, i, PyInt_FromLong(k[i + 1]));
65 return ((PyObject *)o);
66 } break;
67 default:
68 abort();
69 }
70}
71
72static PyObject *keyszany_pynew(PyTypeObject *ty,
73 PyObject *arg, PyObject *kw)
74{
75 char *kwlist[] = { "default", 0 };
76 int dfl;
77 keysz_pyobj *o;
78
79 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", kwlist, &dfl))
80 goto end;
81 if (dfl < 0) VALERR("key size cannot be negative");
82 o = (keysz_pyobj *)ty->tp_alloc(ty, 0);
83 o->dfl = dfl;
84 return ((PyObject *)o);
85end:
86 return (0);
87}
88
89static PyObject *keyszrange_pynew(PyTypeObject *ty,
90 PyObject *arg, PyObject *kw)
91{
92 char *kwlist[] = { "default", "min", "max", "mod", 0 };
93 int dfl, min = 0, max = 0, mod = 1;
94 keyszrange_pyobj *o;
95
96 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iii:new", kwlist,
97 &dfl, &min, &max, &mod))
98 goto end;
99 if (dfl < 0 || min < 0 || max < 0)
100 VALERR("key size cannot be negative");
101 if (min > dfl || (max && dfl > max))
102 VALERR("bad key size bounds");
103 if (mod <= 0 || dfl % mod || min % mod || max % mod)
104 VALERR("bad key size modulus");
105 o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0);
106 o->dfl = dfl;
107 o->min = min;
108 o->max = max;
109 o->mod = mod;
110 return ((PyObject *)o);
111end:
112 return (0);
113}
114
115static PyObject *keyszset_pynew(PyTypeObject *ty,
116 PyObject *arg, PyObject *kw)
117{
118 char *kwlist[] = { "default", "set", 0 };
119 int dfl, i, n, xx;
120 PyObject *set = 0;
121 PyObject *x = 0, *l = 0;
122 keyszset_pyobj *o = 0;
123
124 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", kwlist,
125 &dfl, &set))
126 goto end;
127 if (!set) set = PyTuple_New(0);
128 else Py_INCREF(set);
129 if (!PySequence_Check(set)) TYERR("want a sequence");
130 n = PySequence_Size(set);
131 l = PyList_New(0);
132 if (PyErr_Occurred()) goto end;
133 if (dfl < 0) VALERR("key size cannot be negative");
134 x = PyInt_FromLong(dfl);
135 PyList_Append(l, x);
136 Py_DECREF(x);
137 x = 0;
138 for (i = 0; i < n; i++) {
139 if ((x = PySequence_GetItem(set, i)) == 0) goto end;
140 xx = PyInt_AsLong(x);
141 if (PyErr_Occurred()) goto end;
142 if (xx == dfl) continue;
143 if (xx < 0) VALERR("key size cannot be negative");
144 PyList_Append(l, x);
145 Py_DECREF(x);
b2687a0a 146 x = 0;
d7ab1bab 147 }
148 Py_DECREF(set);
149 if ((set = PySequence_Tuple(l)) == 0) goto end;
150 o = (keyszset_pyobj *)ty->tp_alloc(ty, 0);
151 o->dfl = dfl;
152 o->set = set;
153 Py_INCREF(set);
154end:
155 Py_XDECREF(set);
156 Py_XDECREF(l);
157 Py_XDECREF(x);
158 return ((PyObject *)o);
159}
160
161static PyObject *kaget_min(PyObject *me, void *hunoz)
162 { return (PyInt_FromLong(0)); }
163#define kaget_max kaget_min
164
165static PyObject *ksget_min(PyObject *me, void *hunoz)
166{
167 PyObject *set = ((keyszset_pyobj *)me)->set;
168 int i, n, y, x = -1;
169 n = PyTuple_Size(set);
170 for (i = 0; i < n; i++) {
171 y = PyInt_AsLong(PyTuple_GetItem(set, i));
172 if (x == -1 || y < x) x = y;
173 }
174 return (PyInt_FromLong(x));
175}
176
177static PyObject *ksget_max(PyObject *me, void *hunoz)
178{
179 PyObject *set = ((keyszset_pyobj *)me)->set;
180 int i, n, y, x = -1;
181 n = PyTuple_Size(set);
182 for (i = 0; i < n; i++) {
183 y = PyInt_AsLong(PyTuple_GetItem(set, i));
184 if (y > x) x = y;
185 }
186 return (PyInt_FromLong(x));
187}
188
189static PyMemberDef keysz_pymembers[] = {
190#define MEMBERSTRUCT keysz_pyobj
191#define default dfl /* ugh! */
192 MEMBER(default, T_INT, READONLY, "KSZ.default -> default key size")
193#undef default
194#undef MEMBERSTRUCT
195 { 0 }
196};
197
198static PyGetSetDef keyszany_pygetset[] = {
199#define GETSETNAME(op, name) ka##op##_##name
200 GET (min, "KSZ.min -> smallest allowed key size")
201 GET (max, "KSZ.min -> largest allowed key size")
202#undef GETSETNAME
203 { 0 }
204};
205
206static PyMemberDef keyszrange_pymembers[] = {
207#define MEMBERSTRUCT keyszrange_pyobj
208 MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size")
209 MEMBER(max, T_INT, READONLY, "KSZ.min -> largest allowed key size")
210 MEMBER(mod, T_INT, READONLY,
211 "KSZ.mod -> key size must be a multiple of this")
212#undef MEMBERSTRUCT
213 { 0 }
214};
215
216static PyGetSetDef keyszset_pygetset[] = {
217#define GETSETNAME(op, name) ks##op##_##name
218 GET (min, "KSZ.min -> smallest allowed key size")
219 GET (max, "KSZ.min -> largest allowed key size")
220#undef GETSETNAME
221 { 0 }
222};
223
224static PyMemberDef keyszset_pymembers[] = {
225#define MEMBERSTRUCT keyszset_pyobj
226 MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes")
227#undef MEMBERSTRUCT
228 { 0 }
229};
230
231static PyTypeObject keysz_pytype_skel = {
6d4db0bf 232 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 233 "KeySZ", /* @tp_name@ */
d7ab1bab 234 sizeof(keysz_pyobj), /* @tp_basicsize@ */
235 0, /* @tp_itemsize@ */
236
3aa33042 237 0, /* @tp_dealloc@ */
d7ab1bab 238 0, /* @tp_print@ */
239 0, /* @tp_getattr@ */
240 0, /* @tp_setattr@ */
241 0, /* @tp_compare@ */
242 0, /* @tp_repr@ */
243 0, /* @tp_as_number@ */
244 0, /* @tp_as_sequence@ */
245 0, /* @tp_as_mapping@ */
246 0, /* @tp_hash@ */
247 0, /* @tp_call@ */
248 0, /* @tp_str@ */
249 0, /* @tp_getattro@ */
250 0, /* @tp_setattro@ */
251 0, /* @tp_as_buffer@ */
252 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
253 Py_TPFLAGS_BASETYPE,
254
255 /* @tp_doc@ */
256"Key size constraints.",
257
258 0, /* @tp_traverse@ */
259 0, /* @tp_clear@ */
260 0, /* @tp_richcompare@ */
261 0, /* @tp_weaklistoffset@ */
262 0, /* @tp_iter@ */
963a6148 263 0, /* @tp_iternext@ */
d7ab1bab 264 0, /* @tp_methods@ */
265 keysz_pymembers, /* @tp_members@ */
266 0, /* @tp_getset@ */
267 0, /* @tp_base@ */
268 0, /* @tp_dict@ */
269 0, /* @tp_descr_get@ */
270 0, /* @tp_descr_set@ */
271 0, /* @tp_dictoffset@ */
272 0, /* @tp_init@ */
273 PyType_GenericAlloc, /* @tp_alloc@ */
274 abstract_pynew, /* @tp_new@ */
3aa33042 275 0, /* @tp_free@ */
d7ab1bab 276 0 /* @tp_is_gc@ */
277};
278
279static PyTypeObject keyszany_pytype_skel = {
6d4db0bf 280 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 281 "KeySZAny", /* @tp_name@ */
d7ab1bab 282 sizeof(keysz_pyobj), /* @tp_basicsize@ */
283 0, /* @tp_itemsize@ */
284
3aa33042 285 0, /* @tp_dealloc@ */
d7ab1bab 286 0, /* @tp_print@ */
287 0, /* @tp_getattr@ */
288 0, /* @tp_setattr@ */
289 0, /* @tp_compare@ */
290 0, /* @tp_repr@ */
291 0, /* @tp_as_number@ */
292 0, /* @tp_as_sequence@ */
293 0, /* @tp_as_mapping@ */
294 0, /* @tp_hash@ */
295 0, /* @tp_call@ */
296 0, /* @tp_str@ */
297 0, /* @tp_getattro@ */
298 0, /* @tp_setattro@ */
299 0, /* @tp_as_buffer@ */
300 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
301 Py_TPFLAGS_BASETYPE,
302
303 /* @tp_doc@ */
304"Key size constraints. This object imposes no constraints on size.",
305
306 0, /* @tp_traverse@ */
307 0, /* @tp_clear@ */
308 0, /* @tp_richcompare@ */
309 0, /* @tp_weaklistoffset@ */
310 0, /* @tp_iter@ */
963a6148 311 0, /* @tp_iternext@ */
d7ab1bab 312 0, /* @tp_methods@ */
313 0, /* @tp_members@ */
314 keyszany_pygetset, /* @tp_getset@ */
315 0, /* @tp_base@ */
316 0, /* @tp_dict@ */
317 0, /* @tp_descr_get@ */
318 0, /* @tp_descr_set@ */
319 0, /* @tp_dictoffset@ */
320 0, /* @tp_init@ */
321 PyType_GenericAlloc, /* @tp_alloc@ */
322 keyszany_pynew, /* @tp_new@ */
3aa33042 323 0, /* @tp_free@ */
d7ab1bab 324 0 /* @tp_is_gc@ */
325};
326
327static PyTypeObject keyszrange_pytype_skel = {
6d4db0bf 328 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 329 "KeySZRange", /* @tp_name@ */
d7ab1bab 330 sizeof(keyszrange_pyobj), /* @tp_basicsize@ */
331 0, /* @tp_itemsize@ */
332
3aa33042 333 0, /* @tp_dealloc@ */
d7ab1bab 334 0, /* @tp_print@ */
335 0, /* @tp_getattr@ */
336 0, /* @tp_setattr@ */
337 0, /* @tp_compare@ */
338 0, /* @tp_repr@ */
339 0, /* @tp_as_number@ */
340 0, /* @tp_as_sequence@ */
341 0, /* @tp_as_mapping@ */
342 0, /* @tp_hash@ */
343 0, /* @tp_call@ */
344 0, /* @tp_str@ */
345 0, /* @tp_getattro@ */
346 0, /* @tp_setattro@ */
347 0, /* @tp_as_buffer@ */
348 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
349 Py_TPFLAGS_BASETYPE,
350
351 /* @tp_doc@ */
352"Key size constraints. This object asserts minimum and maximum (if\n\
353sizes, and requires the key length to be a multiple of some value.",
354
355 0, /* @tp_traverse@ */
356 0, /* @tp_clear@ */
357 0, /* @tp_richcompare@ */
358 0, /* @tp_weaklistoffset@ */
359 0, /* @tp_iter@ */
963a6148 360 0, /* @tp_iternext@ */
d7ab1bab 361 0, /* @tp_methods@ */
362 keyszrange_pymembers, /* @tp_members@ */
363 0, /* @tp_getset@ */
364 0, /* @tp_base@ */
365 0, /* @tp_dict@ */
366 0, /* @tp_descr_get@ */
367 0, /* @tp_descr_set@ */
368 0, /* @tp_dictoffset@ */
369 0, /* @tp_init@ */
370 PyType_GenericAlloc, /* @tp_alloc@ */
371 keyszrange_pynew, /* @tp_new@ */
3aa33042 372 0, /* @tp_free@ */
d7ab1bab 373 0 /* @tp_is_gc@ */
374};
375
376static PyTypeObject keyszset_pytype_skel = {
6d4db0bf 377 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 378 "KeySZSet", /* @tp_name@ */
d7ab1bab 379 sizeof(keyszset_pyobj), /* @tp_basicsize@ */
380 0, /* @tp_itemsize@ */
381
3aa33042 382 0, /* @tp_dealloc@ */
d7ab1bab 383 0, /* @tp_print@ */
384 0, /* @tp_getattr@ */
385 0, /* @tp_setattr@ */
386 0, /* @tp_compare@ */
387 0, /* @tp_repr@ */
388 0, /* @tp_as_number@ */
389 0, /* @tp_as_sequence@ */
390 0, /* @tp_as_mapping@ */
391 0, /* @tp_hash@ */
392 0, /* @tp_call@ */
393 0, /* @tp_str@ */
394 0, /* @tp_getattro@ */
395 0, /* @tp_setattro@ */
396 0, /* @tp_as_buffer@ */
397 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
398 Py_TPFLAGS_BASETYPE,
399
400 /* @tp_doc@ */
401"Key size constraints. This object requires the key to be one of a\n\
402few listed sizes.",
403
404 0, /* @tp_traverse@ */
405 0, /* @tp_clear@ */
406 0, /* @tp_richcompare@ */
407 0, /* @tp_weaklistoffset@ */
408 0, /* @tp_iter@ */
963a6148 409 0, /* @tp_iternext@ */
d7ab1bab 410 0, /* @tp_methods@ */
411 keyszset_pymembers, /* @tp_members@ */
412 keyszset_pygetset, /* @tp_getset@ */
413 0, /* @tp_base@ */
414 0, /* @tp_dict@ */
415 0, /* @tp_descr_get@ */
416 0, /* @tp_descr_set@ */
417 0, /* @tp_dictoffset@ */
418 0, /* @tp_init@ */
419 PyType_GenericAlloc, /* @tp_alloc@ */
420 keyszset_pynew, /* @tp_new@ */
3aa33042 421 0, /* @tp_free@ */
d7ab1bab 422 0 /* @tp_is_gc@ */
423};
424
89157adc
MW		 425#define KSZCONVOP(op) \
426 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
427 { \
428 double x, y; \
429 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
430 y = keysz_##op(x); \
431 return (PyFloat_FromDouble(y)); \
432 }
433KSZCONVOP(fromdl)
434KSZCONVOP(fromschnorr)
435KSZCONVOP(fromif)
436KSZCONVOP(fromec)
437KSZCONVOP(todl)
438KSZCONVOP(toschnorr)
439KSZCONVOP(toif)
440KSZCONVOP(toec)
441#undef KSZCONVOP
442
d7ab1bab 443/*----- Symmetric encryption ----------------------------------------------*/
444
445PyTypeObject *gccipher_pytype, *gcipher_pytype;
446
447CONVFUNC(gccipher, gccipher *, GCCIPHER_CC)
448CONVFUNC(gcipher, gcipher *, GCIPHER_C)
449
450PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c, unsigned f)
451{
452 gcipher_pyobj *g;
453 if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c));
454 else Py_INCREF(cobj);
455 g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj);
456 g->c = c;
457 g->f = f;
b2687a0a 458 return ((PyObject *)g);
d7ab1bab 459}
460
461static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
462{
463 char *kwlist[] = { "k", 0 };
464 char *k;
465 int sz;
466
467 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
468 goto end;
469 if (keysz(sz, GCCIPHER_CC(ty)->keysz) != sz) VALERR("bad key length");
470 return (gcipher_pywrap((PyObject *)ty,
471 GC_INIT(GCCIPHER_CC(ty), k, sz),
472 f_freeme));
473end:
b2687a0a 474 return (0);
d7ab1bab 475}
476
477PyObject *gccipher_pywrap(gccipher *cc)
478{
df9f8366 479 gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name);
d7ab1bab 480 g->cc = cc;
24b3d57b
MW		 481 g->ty.ht_type.tp_basicsize = sizeof(gcipher_pyobj);
482 g->ty.ht_type.tp_base = gcipher_pytype;
d7ab1bab 483 Py_INCREF(gcipher_pytype);
24b3d57b
MW		 484 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
485 Py_TPFLAGS_BASETYPE |
486 Py_TPFLAGS_HEAPTYPE);
487 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
488 g->ty.ht_type.tp_free = 0;
489 g->ty.ht_type.tp_new = gcipher_pynew;
dc075750 490 typeready(&g->ty.ht_type);
d7ab1bab 491 return ((PyObject *)g);
492}
493
494static void gcipher_pydealloc(PyObject *me)
495{
496 if (GCIPHER_F(me) & f_freeme)
497 GC_DESTROY(GCIPHER_C(me));
498 Py_DECREF(me->ob_type);
3aa33042 499 FREEOBJ(me);
d7ab1bab 500}
501
502static PyObject *gccget_name(PyObject *me, void *hunoz)
503 { return (PyString_FromString(GCCIPHER_CC(me)->name)); }
504
505static PyObject *gccget_keysz(PyObject *me, void *hunoz)
506 { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); }
507
508static PyObject *gccget_blksz(PyObject *me, void *hunoz)
509 { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); }
510
511static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg)
512{
513 char *p;
514 int sz;
515 PyObject *rc = 0;
516
517 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &sz)) return (0);
518 rc = bytestring_pywrap(0, sz);
519 GC_ENCRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
520 return (rc);
521}
522
523static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg)
524{
525 char *p;
526 int sz;
527 PyObject *rc = 0;
528
529 if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0);
530 rc = bytestring_pywrap(0, sz);
531 p = PyString_AS_STRING(rc);
532 memset(p, 0, sz);
533 GC_ENCRYPT(GCIPHER_C(me), p, p, sz);
534 return (rc);
535}
536
537static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg)
538{
539 char *p;
540 int sz;
541 PyObject *rc = 0;
542
543 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &sz)) return (0);
544 rc = bytestring_pywrap(0, sz);
545 GC_DECRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
546 return (rc);
547}
548
549static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg)
550{
551 char *p;
552 int sz;
553 PyObject *rc = 0;
554
555 if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0);
556 rc = bytestring_pywrap(0, sz);
557 p = PyString_AS_STRING(rc);
558 memset(p, 0, sz);
559 GC_DECRYPT(GCIPHER_C(me), p, p, sz);
560 return (rc);
561}
562
563static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg)
564{
565 char *p;
566 int sz;
567
568 if (!PyArg_ParseTuple(arg, "s#:setiv", &p, &sz)) goto end;
569 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
570 if (sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length");
571 GC_SETIV(GCIPHER_C(me), p);
572 RETURN_ME;
573end:
574 return (0);
575}
576
577static PyObject *gcmeth_bdry(PyObject *me, PyObject *arg)
578{
579 if (!PyArg_ParseTuple(arg, ":bdry")) goto end;
580 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
581 GC_BDRY(GCIPHER_C(me));
582 RETURN_ME;
583end:
584 return (0);
585}
586
587static PyGetSetDef gccipher_pygetset[] = {
588#define GETSETNAME(op, name) gcc##op##_##name
589 GET (keysz, "CC.keysz -> acceptable key sizes")
590 GET (blksz, "CC.blksz -> block size, or zero")
591 GET (name, "CC.name -> name of this kind of cipher")
592#undef GETSETNAME
593 { 0 }
594};
595
596static PyMethodDef gcipher_pymethods[] = {
597#define METHNAME(name) gcmeth_##name
598 METH (encrypt, "C.encrypt(PT) -> CT")
599 METH (enczero, "C.enczero(N) -> CT")
600 METH (decrypt, "C.decrypt(CT) -> PT")
601 METH (deczero, "C.deczero(N) -> PT")
602 METH (setiv, "C.setiv(IV)")
603 METH (bdry, "C.bdry()")
604#undef METHNAME
605 { 0 }
606};
607
608static PyTypeObject gccipher_pytype_skel = {
6d4db0bf 609 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 610 "GCCipher", /* @tp_name@ */
d7ab1bab 611 sizeof(gccipher_pyobj), /* @tp_basicsize@ */
612 0, /* @tp_itemsize@ */
613
614 0, /* @tp_dealloc@ */
615 0, /* @tp_print@ */
616 0, /* @tp_getattr@ */
617 0, /* @tp_setattr@ */
618 0, /* @tp_compare@ */
619 0, /* @tp_repr@ */
620 0, /* @tp_as_number@ */
621 0, /* @tp_as_sequence@ */
622 0, /* @tp_as_mapping@ */
623 0, /* @tp_hash@ */
624 0, /* @tp_call@ */
625 0, /* @tp_str@ */
626 0, /* @tp_getattro@ */
627 0, /* @tp_setattro@ */
628 0, /* @tp_as_buffer@ */
629 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
630 Py_TPFLAGS_BASETYPE,
631
632 /* @tp_doc@ */
633"Symmetric cipher metaclass.",
634
635 0, /* @tp_traverse@ */
636 0, /* @tp_clear@ */
637 0, /* @tp_richcompare@ */
638 0, /* @tp_weaklistoffset@ */
639 0, /* @tp_iter@ */
963a6148 640 0, /* @tp_iternext@ */
d7ab1bab 641 0, /* @tp_methods@ */
642 0, /* @tp_members@ */
643 gccipher_pygetset, /* @tp_getset@ */
644 0, /* @tp_base@ */
645 0, /* @tp_dict@ */
646 0, /* @tp_descr_get@ */
647 0, /* @tp_descr_set@ */
648 0, /* @tp_dictoffset@ */
649 0, /* @tp_init@ */
650 PyType_GenericAlloc, /* @tp_alloc@ */
651 abstract_pynew, /* @tp_new@ */
3aa33042 652 0, /* @tp_free@ */
d7ab1bab 653 0 /* @tp_is_gc@ */
654};
655
656static PyTypeObject gcipher_pytype_skel = {
6d4db0bf 657 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 658 "GCipher", /* @tp_name@ */
d7ab1bab 659 sizeof(gcipher_pyobj), /* @tp_basicsize@ */
660 0, /* @tp_itemsize@ */
661
662 gcipher_pydealloc, /* @tp_dealloc@ */
663 0, /* @tp_print@ */
664 0, /* @tp_getattr@ */
665 0, /* @tp_setattr@ */
666 0, /* @tp_compare@ */
667 0, /* @tp_repr@ */
668 0, /* @tp_as_number@ */
669 0, /* @tp_as_sequence@ */
670 0, /* @tp_as_mapping@ */
671 0, /* @tp_hash@ */
672 0, /* @tp_call@ */
673 0, /* @tp_str@ */
674 0, /* @tp_getattro@ */
675 0, /* @tp_setattro@ */
676 0, /* @tp_as_buffer@ */
677 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
678 Py_TPFLAGS_BASETYPE,
679
680 /* @tp_doc@ */
681"Symmetric cipher, abstract base class.",
682
683 0, /* @tp_traverse@ */
684 0, /* @tp_clear@ */
685 0, /* @tp_richcompare@ */
686 0, /* @tp_weaklistoffset@ */
687 0, /* @tp_iter@ */
963a6148 688 0, /* @tp_iternext@ */
d7ab1bab 689 gcipher_pymethods, /* @tp_methods@ */
690 0, /* @tp_members@ */
691 0, /* @tp_getset@ */
692 0, /* @tp_base@ */
693 0, /* @tp_dict@ */
694 0, /* @tp_descr_get@ */
695 0, /* @tp_descr_set@ */
696 0, /* @tp_dictoffset@ */
697 0, /* @tp_init@ */
698 PyType_GenericAlloc, /* @tp_alloc@ */
699 abstract_pynew, /* @tp_new@ */
3aa33042 700 0, /* @tp_free@ */
d7ab1bab 701 0 /* @tp_is_gc@ */
702};
703
704/*----- Hash functions ----------------------------------------------------*/
705
706PyTypeObject *gchash_pytype, *ghash_pytype;
707
708CONVFUNC(gchash, gchash *, GCHASH_CH)
709CONVFUNC(ghash, ghash *, GHASH_H)
710
711static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
712{
713 char *kwlist[] = { 0 };
714 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist))
715 goto end;
716 return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty)), f_freeme));
717end:
b2687a0a 718 return (0);
d7ab1bab 719}
720
721PyObject *gchash_pywrap(gchash *ch)
722{
df9f8366 723 gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name);
d7ab1bab 724 g->ch = ch;
24b3d57b
MW		 725 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
726 g->ty.ht_type.tp_base = ghash_pytype;
d7ab1bab 727 Py_INCREF(ghash_pytype);
24b3d57b
MW		 728 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
729 Py_TPFLAGS_BASETYPE |
730 Py_TPFLAGS_HEAPTYPE);
731 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
732 g->ty.ht_type.tp_free = 0;
733 g->ty.ht_type.tp_new = ghash_pynew;
dc075750 734 typeready(&g->ty.ht_type);
d7ab1bab 735 return ((PyObject *)g);
736}
737
738PyObject *ghash_pywrap(PyObject *cobj, ghash *h, unsigned f)
739{
740 ghash_pyobj *g;
741 if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h));
742 else Py_INCREF(cobj);
743 g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj);
744 g->h = h;
745 g->f = f;
b2687a0a 746 return ((PyObject *)g);
d7ab1bab 747}
748
749static void ghash_pydealloc(PyObject *me)
750{
751 if (GHASH_F(me) & f_freeme)
752 GH_DESTROY(GHASH_H(me));
753 Py_DECREF(me->ob_type);
3aa33042 754 FREEOBJ(me);
d7ab1bab 755}
756
757static PyObject *gchget_name(PyObject *me, void *hunoz)
758 { return (PyString_FromString(GCHASH_CH(me)->name)); }
759
760static PyObject *gchget_hashsz(PyObject *me, void *hunoz)
761 { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); }
762
763static PyObject *gchget_bufsz(PyObject *me, void *hunoz)
764 { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); }
765
766static PyObject *ghmeth_hash(PyObject *me, PyObject *arg)
767{
768 char *p;
769 int sz;
770 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
771 GH_HASH(GHASH_H(me), p, sz);
772 RETURN_ME;
773}
774
46e6ad89 775#define GHMETH_HASHU_(n, W, w) \
776 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
777 { \
778 uint##n x; \
779 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
780 GH_HASHU##W(GHASH_H(me), x); \
781 RETURN_ME; \
782 end: \
783 return (0); \
784 }
785DOUINTCONV(GHMETH_HASHU_)
786
787#define GHMETH_HASHBUF_(n, W, w) \
788 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
789 { \
790 char *p; \
791 int sz; \
792 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
793 if (sz > MASK##n) TYERR("string too long"); \
794 GH_HASHBUF##W(GHASH_H(me), p, sz); \
795 RETURN_ME; \
796 end: \
797 return (0); \
798 }
799DOUINTCONV(GHMETH_HASHBUF_)
800
801static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
802{
803 char *p;
804 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
805 GH_HASHSTRZ(GHASH_H(me), p);
806 RETURN_ME;
807}
808
07bcd768
MW		 809static PyObject *ghmeth_done(PyObject *me, PyObject *arg)
810{
811 ghash *g;
812 PyObject *rc;
813 if (!PyArg_ParseTuple(arg, ":done")) return (0);
814 g = GH_COPY(GHASH_H(me));
815 rc = bytestring_pywrap(0, g->ops->c->hashsz);
816 GH_DONE(g, PyString_AS_STRING(rc));
817 GH_DESTROY(g);
818 return (rc);
819}
820
821static PyGetSetDef gchash_pygetset[] = {
822#define GETSETNAME(op, name) gch##op##_##name
823 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
824 GET (hashsz, "CH.hashsz -> hash output size")
825 GET (name, "CH.name -> name of this kind of hash")
826#undef GETSETNAME
827 { 0 }
828};
829
d7ab1bab 830static PyMethodDef ghash_pymethods[] = {
831#define METHNAME(name) ghmeth_##name
832 METH (hash, "H.hash(M)")
46e6ad89 833#define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
834 DOUINTCONV(METHU_)
07bcd768 835#undef METHU_
46e6ad89 836#define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
837 DOUINTCONV(METHBUF_)
07bcd768 838#undef METHBUF_
46e6ad89 839 METH (hashstrz, "H.hashstrz(STRING)")
d7ab1bab 840 METH (done, "H.done() -> HASH")
841#undef METHNAME
842 { 0 }
843};
844
845static PyTypeObject gchash_pytype_skel = {
6d4db0bf 846 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 847 "GCHash", /* @tp_name@ */
d7ab1bab 848 sizeof(gchash_pyobj), /* @tp_basicsize@ */
849 0, /* @tp_itemsize@ */
850
851 0, /* @tp_dealloc@ */
852 0, /* @tp_print@ */
853 0, /* @tp_getattr@ */
854 0, /* @tp_setattr@ */
855 0, /* @tp_compare@ */
856 0, /* @tp_repr@ */
857 0, /* @tp_as_number@ */
858 0, /* @tp_as_sequence@ */
859 0, /* @tp_as_mapping@ */
860 0, /* @tp_hash@ */
861 0, /* @tp_call@ */
862 0, /* @tp_str@ */
863 0, /* @tp_getattro@ */
864 0, /* @tp_setattro@ */
865 0, /* @tp_as_buffer@ */
866 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
867 Py_TPFLAGS_BASETYPE,
868
869 /* @tp_doc@ */
870"Hash function metaclass.",
871
872 0, /* @tp_traverse@ */
873 0, /* @tp_clear@ */
874 0, /* @tp_richcompare@ */
875 0, /* @tp_weaklistoffset@ */
876 0, /* @tp_iter@ */
963a6148 877 0, /* @tp_iternext@ */
d7ab1bab 878 0, /* @tp_methods@ */
879 0, /* @tp_members@ */
880 gchash_pygetset, /* @tp_getset@ */
881 0, /* @tp_base@ */
882 0, /* @tp_dict@ */
883 0, /* @tp_descr_get@ */
884 0, /* @tp_descr_set@ */
885 0, /* @tp_dictoffset@ */
886 0, /* @tp_init@ */
887 PyType_GenericAlloc, /* @tp_alloc@ */
888 abstract_pynew, /* @tp_new@ */
3aa33042 889 0, /* @tp_free@ */
d7ab1bab 890 0 /* @tp_is_gc@ */
891};
892
893static PyTypeObject ghash_pytype_skel = {
6d4db0bf 894 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 895 "GHash", /* @tp_name@ */
d7ab1bab 896 sizeof(ghash_pyobj), /* @tp_basicsize@ */
897 0, /* @tp_itemsize@ */
898
899 ghash_pydealloc, /* @tp_dealloc@ */
900 0, /* @tp_print@ */
901 0, /* @tp_getattr@ */
902 0, /* @tp_setattr@ */
903 0, /* @tp_compare@ */
904 0, /* @tp_repr@ */
905 0, /* @tp_as_number@ */
906 0, /* @tp_as_sequence@ */
907 0, /* @tp_as_mapping@ */
908 0, /* @tp_hash@ */
909 0, /* @tp_call@ */
910 0, /* @tp_str@ */
911 0, /* @tp_getattro@ */
912 0, /* @tp_setattro@ */
913 0, /* @tp_as_buffer@ */
914 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
915 Py_TPFLAGS_BASETYPE,
916
917 /* @tp_doc@ */
918"Hash function, abstract base class.",
919
920 0, /* @tp_traverse@ */
921 0, /* @tp_clear@ */
922 0, /* @tp_richcompare@ */
923 0, /* @tp_weaklistoffset@ */
924 0, /* @tp_iter@ */
963a6148 925 0, /* @tp_iternext@ */
d7ab1bab 926 ghash_pymethods, /* @tp_methods@ */
927 0, /* @tp_members@ */
928 0, /* @tp_getset@ */
929 0, /* @tp_base@ */
930 0, /* @tp_dict@ */
931 0, /* @tp_descr_get@ */
932 0, /* @tp_descr_set@ */
933 0, /* @tp_dictoffset@ */
934 0, /* @tp_init@ */
935 PyType_GenericAlloc, /* @tp_alloc@ */
936 abstract_pynew, /* @tp_new@ */
3aa33042 937 0, /* @tp_free@ */
d7ab1bab 938 0 /* @tp_is_gc@ */
939};
940
941/*----- Message authentication --------------------------------------------*/
942
943PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
944
945CONVFUNC(gcmac, gcmac *, GCMAC_CM)
946CONVFUNC(gmac, gmac *, GMAC_M)
947CONVFUNC(gmhash, ghash *, GHASH_H)
948
949static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
950{
951 char *kwlist[] = { "k", 0 };
952 char *k;
953 int sz;
954
955 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
956 goto end;
957 if (keysz(sz, GCMAC_CM(ty)->keysz) != sz) VALERR("bad key length");
958 return (gmac_pywrap((PyObject *)ty,
959 GM_KEY(GCMAC_CM(ty), k, sz),
960 f_freeme));
961end:
b2687a0a 962 return (0);
d7ab1bab 963}
964
965static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
966{
967 char *kwlist[] = { 0 };
968 ghash_pyobj *g;
969
970 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) return (0);
971 g = PyObject_NEW(ghash_pyobj, ty);
972 g->h = GM_INIT(GMAC_M(ty));
973 g->f = f_freeme;
974 Py_INCREF(ty);
975 return ((PyObject *)g);
976}
977
978PyObject *gcmac_pywrap(gcmac *cm)
979{
df9f8366 980 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
d7ab1bab 981 g->cm = cm;
24b3d57b
MW		 982 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
983 g->ty.ht_type.tp_base = gmac_pytype;
d7ab1bab 984 Py_INCREF(gmac_pytype);
24b3d57b
MW		 985 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
986 Py_TPFLAGS_BASETYPE |
987 Py_TPFLAGS_HEAPTYPE);
988 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
989 g->ty.ht_type.tp_free = 0;
990 g->ty.ht_type.tp_new = gmac_pynew;
dc075750 991 typeready(&g->ty.ht_type);
d7ab1bab 992 return ((PyObject *)g);
993}
994
995PyObject *gmac_pywrap(PyObject *cobj, gmac *m, unsigned f)
996{
997 gmac_pyobj *g;
998 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
999 else Py_INCREF(cobj);
df9f8366 1000 g = newtype((PyTypeObject *)cobj, 0, 0);
828b1388 1001 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
24b3d57b
MW		 1002 g->ty.ht_name = PyString_FromFormat("%s(keyed)", m->ops->c->name);
1003 g->ty.ht_type.tp_name = PyString_AS_STRING(g->ty.ht_name);
1004 g->ty.ht_type.tp_base = gmhash_pytype;
d7ab1bab 1005 Py_INCREF(gmac_pytype);
24b3d57b
MW		 1006 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1007 Py_TPFLAGS_BASETYPE |
1008 Py_TPFLAGS_HEAPTYPE);
1009 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1010 g->ty.ht_type.tp_free = 0;
1011 g->ty.ht_type.tp_new = gmhash_pynew;
dc075750 1012 typeready(&g->ty.ht_type);
d7ab1bab 1013 g->m = m;
1014 g->f = f;
b2687a0a 1015 return ((PyObject *)g);
d7ab1bab 1016}
1017
1018static void gmac_pydealloc(PyObject *me)
1019{
1020 if (GMAC_F(me) & f_freeme)
1021 GM_DESTROY(GMAC_M(me));
1022 Py_DECREF(me->ob_type);
d7ab1bab 1023 PyType_Type.tp_dealloc(me);
1024}
1025
1026static PyObject *gcmget_name(PyObject *me, void *hunoz)
1027 { return (PyString_FromString(GCMAC_CM(me)->name)); }
1028
1029static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
1030 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
1031
1032static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
1033 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
1034
1035static PyGetSetDef gcmac_pygetset[] = {
1036#define GETSETNAME(op, name) gcm##op##_##name
1037 GET (keysz, "CM.keysz -> acceptable key sizes")
1038 GET (tagsz, "CM.tagsz -> MAC output size")
1039 GET (name, "CM.name -> name of this kind of MAC")
1040#undef GETSETNAME
1041 { 0 }
1042};
1043
1044static PyTypeObject gcmac_pytype_skel = {
6d4db0bf 1045 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1046 "GCMAC", /* @tp_name@ */
d7ab1bab 1047 sizeof(gchash_pyobj), /* @tp_basicsize@ */
1048 0, /* @tp_itemsize@ */
1049
1050 0, /* @tp_dealloc@ */
1051 0, /* @tp_print@ */
1052 0, /* @tp_getattr@ */
1053 0, /* @tp_setattr@ */
1054 0, /* @tp_compare@ */
1055 0, /* @tp_repr@ */
1056 0, /* @tp_as_number@ */
1057 0, /* @tp_as_sequence@ */
1058 0, /* @tp_as_mapping@ */
1059 0, /* @tp_hash@ */
1060 0, /* @tp_call@ */
1061 0, /* @tp_str@ */
1062 0, /* @tp_getattro@ */
1063 0, /* @tp_setattro@ */
1064 0, /* @tp_as_buffer@ */
1065 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1066 Py_TPFLAGS_BASETYPE,
1067
1068 /* @tp_doc@ */
1069"Message authentication code metametaclass.",
1070
1071 0, /* @tp_traverse@ */
1072 0, /* @tp_clear@ */
1073 0, /* @tp_richcompare@ */
1074 0, /* @tp_weaklistoffset@ */
1075 0, /* @tp_iter@ */
963a6148 1076 0, /* @tp_iternext@ */
d7ab1bab 1077 0, /* @tp_methods@ */
1078 0, /* @tp_members@ */
1079 gcmac_pygetset, /* @tp_getset@ */
1080 0, /* @tp_base@ */
1081 0, /* @tp_dict@ */
1082 0, /* @tp_descr_get@ */
1083 0, /* @tp_descr_set@ */
1084 0, /* @tp_dictoffset@ */
1085 0, /* @tp_init@ */
1086 PyType_GenericAlloc, /* @tp_alloc@ */
1087 abstract_pynew, /* @tp_new@ */
3aa33042 1088 0, /* @tp_free@ */
d7ab1bab 1089 0 /* @tp_is_gc@ */
1090};
1091
1092static PyTypeObject gmac_pytype_skel = {
6d4db0bf 1093 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1094 "GMAC", /* @tp_name@ */
d7ab1bab 1095 sizeof(gmac_pyobj), /* @tp_basicsize@ */
1096 0, /* @tp_itemsize@ */
1097
1098 gmac_pydealloc, /* @tp_dealloc@ */
1099 0, /* @tp_print@ */
1100 0, /* @tp_getattr@ */
1101 0, /* @tp_setattr@ */
1102 0, /* @tp_compare@ */
1103 0, /* @tp_repr@ */
1104 0, /* @tp_as_number@ */
1105 0, /* @tp_as_sequence@ */
1106 0, /* @tp_as_mapping@ */
1107 0, /* @tp_hash@ */
1108 0, /* @tp_call@ */
1109 0, /* @tp_str@ */
1110 0, /* @tp_getattro@ */
1111 0, /* @tp_setattro@ */
1112 0, /* @tp_as_buffer@ */
1113 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1114 Py_TPFLAGS_BASETYPE,
1115
1116 /* @tp_doc@ */
1117"Message authentication code metaclass, abstract base class.",
1118
1119 0, /* @tp_traverse@ */
1120 0, /* @tp_clear@ */
1121 0, /* @tp_richcompare@ */
1122 0, /* @tp_weaklistoffset@ */
1123 0, /* @tp_iter@ */
963a6148 1124 0, /* @tp_iternext@ */
d7ab1bab 1125 0, /* @tp_methods@ */
1126 0, /* @tp_members@ */
1127 0, /* @tp_getset@ */
1128 0, /* @tp_base@ */
1129 0, /* @tp_dict@ */
1130 0, /* @tp_descr_get@ */
1131 0, /* @tp_descr_set@ */
1132 0, /* @tp_dictoffset@ */
1133 0, /* @tp_init@ */
1134 PyType_GenericAlloc, /* @tp_alloc@ */
1135 abstract_pynew, /* @tp_new@ */
3aa33042 1136 0, /* @tp_free@ */
d7ab1bab 1137 0 /* @tp_is_gc@ */
1138};
1139
1140static PyTypeObject gmhash_pytype_skel = {
6d4db0bf 1141 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1142 "GMACHash", /* @tp_name@ */
d7ab1bab 1143 sizeof(ghash_pyobj), /* @tp_basicsize@ */
1144 0, /* @tp_itemsize@ */
1145
1146 ghash_pydealloc, /* @tp_dealloc@ */
1147 0, /* @tp_print@ */
1148 0, /* @tp_getattr@ */
1149 0, /* @tp_setattr@ */
1150 0, /* @tp_compare@ */
1151 0, /* @tp_repr@ */
1152 0, /* @tp_as_number@ */
1153 0, /* @tp_as_sequence@ */
1154 0, /* @tp_as_mapping@ */
1155 0, /* @tp_hash@ */
1156 0, /* @tp_call@ */
1157 0, /* @tp_str@ */
1158 0, /* @tp_getattro@ */
1159 0, /* @tp_setattro@ */
1160 0, /* @tp_as_buffer@ */
1161 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1162 Py_TPFLAGS_BASETYPE,
1163
1164 /* @tp_doc@ */
1165"Message authentication code, abstract base class.",
1166
1167 0, /* @tp_traverse@ */
1168 0, /* @tp_clear@ */
1169 0, /* @tp_richcompare@ */
1170 0, /* @tp_weaklistoffset@ */
1171 0, /* @tp_iter@ */
963a6148 1172 0, /* @tp_iternext@ */
d7ab1bab 1173 0, /* @tp_methods@ */
1174 0, /* @tp_members@ */
1175 0, /* @tp_getset@ */
1176 0, /* @tp_base@ */
1177 0, /* @tp_dict@ */
1178 0, /* @tp_descr_get@ */
1179 0, /* @tp_descr_set@ */
1180 0, /* @tp_dictoffset@ */
1181 0, /* @tp_init@ */
1182 PyType_GenericAlloc, /* @tp_alloc@ */
1183 abstract_pynew, /* @tp_new@ */
3aa33042 1184 0, /* @tp_free@ */
d7ab1bab 1185 0 /* @tp_is_gc@ */
1186};
1187
03ed9abb
MW		 1188/*----- Pseudorandom permutations -----------------------------------------*/
1189
1190static PyTypeObject *gcprp_pytype, *gprp_pytype;
1191
1192typedef struct prpinfo {
1193 const char *name;
1194 const octet *keysz;
1195 size_t ctxsz;
1196 size_t blksz;
1197 void (*init)(void *, const void *, size_t);
1198 void (*eblk)(void *, const void *, void *);
1199 void (*dblk)(void *, const void *, void *);
1200} prpinfo;
1201
1202#define PRP_DEF(PRE, pre) \
1203 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
1204 { pre##_init(ctx, k, ksz); } \
1205 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
1206 { \
1207 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1208 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1209 } \
1210 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
1211 { \
1212 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
1213 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
1214 } \
1215 static const prpinfo pre##_prpinfo = { \
1216 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
1217 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
1218 };
1219PRPS(PRP_DEF)
1220
1221static const struct prpinfo *const gprptab[] = {
1222#define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
1223 PRPS(PRP_ENTRY)
1224 0
b2687a0a 1225};
03ed9abb
MW		 1226
1227typedef struct gcprp_pyobj {
1228 PyHeapTypeObject ty;
1229 const prpinfo *prp;
1230} gcprp_pyobj;
1231#define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
1232
1233typedef struct gprp_pyobj {
1234 PyObject_HEAD
1235 const prpinfo *prp;
1236} gprp_pyobj;
1237#define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
1238#define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
1239
1240typedef struct prp {
1241 const prpinfo *prp;
1242 void *ctx;
1243} prp;
1244
1245static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
1246{
1247 char *kwlist[] = { "key", 0 };
1248 char *k;
1249 int sz;
1250 const prpinfo *prp = GCPRP_PRP(ty);
1251 PyObject *me;
1252
1253 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
1254 goto end;
1255 if (keysz(sz, prp->keysz) != sz) VALERR("bad key length");
1256 me = (PyObject *)ty->tp_alloc(ty, 0);
1257 GPRP_PRP(me) = prp;
1258 prp->init(GPRP_CTX(me), k, sz);
1259 Py_INCREF(me);
1260 return (me);
1261end:
b2687a0a 1262 return (0);
03ed9abb
MW		 1263}
1264
1265static void gprp_pydealloc(PyObject *me)
1266 { Py_DECREF(me->ob_type); FREEOBJ(me); }
1267
1268static PyObject *gcprp_pywrap(const prpinfo *prp)
1269{
1270 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
1271 g->prp = prp;
24b3d57b
MW		 1272 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
1273 g->ty.ht_type.tp_base = gprp_pytype;
03ed9abb 1274 Py_INCREF(gprp_pytype);
24b3d57b
MW		 1275 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1276 Py_TPFLAGS_BASETYPE |
1277 Py_TPFLAGS_HEAPTYPE);
1278 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1279 g->ty.ht_type.tp_free = 0;
1280 g->ty.ht_type.tp_new = gprp_pynew;
dc075750 1281 typeready(&g->ty.ht_type);
03ed9abb
MW		 1282 return ((PyObject *)g);
1283}
1284
1285static PyObject *gcpget_name(PyObject *me, void *hunoz)
1286 { return (PyString_FromString(GCPRP_PRP(me)->name)); }
1287static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
1288 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
1289static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
1290 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
1291
1292static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
1293{
1294 char *p;
1295 int n;
1296 PyObject *rc = 0;
1297
1298 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &n)) goto end;
1299 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
1300 rc = bytestring_pywrap(0, n);
1301 GPRP_PRP(me)->eblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
1302end:
1303 return (rc);
1304}
1305
1306static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
1307{
1308 char *p;
1309 int n;
1310 PyObject *rc = 0;
1311
1312 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &n)) goto end;
1313 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
1314 rc = bytestring_pywrap(0, n);
1315 GPRP_PRP(me)->dblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
1316end:
1317 return (rc);
1318}
1319
1320static PyGetSetDef gcprp_pygetset[] = {
1321#define GETSETNAME(op, name) gcp##op##_##name
1322 GET (keysz, "CP.keysz -> acceptable key sizes")
1323 GET (blksz, "CP.blksz -> block size")
1324 GET (name, "CP.name -> name of this kind of PRP")
1325#undef GETSETNAME
1326 { 0 }
1327};
1328
1329static PyMethodDef gprp_pymethods[] = {
1330#define METHNAME(name) gpmeth_##name
1331 METH (encrypt, "P.encrypt(PT) -> CT")
1332 METH (decrypt, "P.decrypt(CT) -> PT")
1333#undef METHNAME
1334 { 0 }
1335};
1336
1337static PyTypeObject gcprp_pytype_skel = {
1338 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1339 "GCPRP", /* @tp_name@ */
03ed9abb
MW		 1340 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
1341 0, /* @tp_itemsize@ */
1342
1343 0, /* @tp_dealloc@ */
1344 0, /* @tp_print@ */
1345 0, /* @tp_getattr@ */
1346 0, /* @tp_setattr@ */
1347 0, /* @tp_compare@ */
1348 0, /* @tp_repr@ */
1349 0, /* @tp_as_number@ */
1350 0, /* @tp_as_sequence@ */
1351 0, /* @tp_as_mapping@ */
1352 0, /* @tp_hash@ */
1353 0, /* @tp_call@ */
1354 0, /* @tp_str@ */
1355 0, /* @tp_getattro@ */
1356 0, /* @tp_setattro@ */
1357 0, /* @tp_as_buffer@ */
1358 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1359 Py_TPFLAGS_BASETYPE,
1360
1361 /* @tp_doc@ */
1362"Pseudorandom permutation metaclass.",
1363
1364 0, /* @tp_traverse@ */
1365 0, /* @tp_clear@ */
1366 0, /* @tp_richcompare@ */
1367 0, /* @tp_weaklistoffset@ */
1368 0, /* @tp_iter@ */
1369 0, /* @tp_iternext@ */
1370 0, /* @tp_methods@ */
1371 0, /* @tp_members@ */
1372 gcprp_pygetset, /* @tp_getset@ */
1373 0, /* @tp_base@ */
1374 0, /* @tp_dict@ */
1375 0, /* @tp_descr_get@ */
1376 0, /* @tp_descr_set@ */
1377 0, /* @tp_dictoffset@ */
1378 0, /* @tp_init@ */
1379 PyType_GenericAlloc, /* @tp_alloc@ */
1380 abstract_pynew, /* @tp_new@ */
1381 0, /* @tp_free@ */
1382 0 /* @tp_is_gc@ */
1383};
1384
1385static PyTypeObject gprp_pytype_skel = {
1386 PyObject_HEAD_INIT(0) 0, /* Header */
c461c9b3 1387 "GPRP", /* @tp_name@ */
03ed9abb
MW		 1388 sizeof(gprp_pyobj), /* @tp_basicsize@ */
1389 0, /* @tp_itemsize@ */
1390
1391 gprp_pydealloc, /* @tp_dealloc@ */
1392 0, /* @tp_print@ */
1393 0, /* @tp_getattr@ */
1394 0, /* @tp_setattr@ */
1395 0, /* @tp_compare@ */
1396 0, /* @tp_repr@ */
1397 0, /* @tp_as_number@ */
1398 0, /* @tp_as_sequence@ */
1399 0, /* @tp_as_mapping@ */
1400 0, /* @tp_hash@ */
1401 0, /* @tp_call@ */
1402 0, /* @tp_str@ */
1403 0, /* @tp_getattro@ */
1404 0, /* @tp_setattro@ */
1405 0, /* @tp_as_buffer@ */
1406 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1407 Py_TPFLAGS_BASETYPE,
1408
1409 /* @tp_doc@ */
1410"Pseudorandom permutation, abstract base class.",
1411
1412 0, /* @tp_traverse@ */
1413 0, /* @tp_clear@ */
1414 0, /* @tp_richcompare@ */
1415 0, /* @tp_weaklistoffset@ */
1416 0, /* @tp_iter@ */
1417 0, /* @tp_iternext@ */
1418 gprp_pymethods, /* @tp_methods@ */
1419 0, /* @tp_members@ */
1420 0, /* @tp_getset@ */
1421 0, /* @tp_base@ */
1422 0, /* @tp_dict@ */
1423 0, /* @tp_descr_get@ */
1424 0, /* @tp_descr_set@ */
1425 0, /* @tp_dictoffset@ */
1426 0, /* @tp_init@ */
1427 PyType_GenericAlloc, /* @tp_alloc@ */
1428 abstract_pynew, /* @tp_new@ */
1429 0, /* @tp_free@ */
1430 0 /* @tp_is_gc@ */
1431};
1432
d7ab1bab 1433/*----- Main code ---------------------------------------------------------*/
1434
89157adc
MW		 1435static PyMethodDef methods[] = {
1436#define METHNAME(func) meth_##func
1437 METH (_KeySZ_fromdl, "\
1438fromdl(N) -> M: convert integer discrete log field size to work factor")
1439 METH (_KeySZ_fromschnorr, "\
1440fromschnorr(N) -> M: convert Schnorr group order to work factor")
1441 METH (_KeySZ_fromif, "\
1442fromif(N) -> M: convert integer factorization problem size to work factor")
1443 METH (_KeySZ_fromec, "\
1444fromec(N) -> M: convert elliptic curve group order to work factor")
1445 METH (_KeySZ_todl, "\
1446todl(N) -> M: convert work factor to integer discrete log field size")
1447 METH (_KeySZ_toschnorr, "\
1448toschnorr(N) -> M: convert work factor to Schnorr group order")
1449 METH (_KeySZ_toif, "\
1450toif(N) -> M: convert work factor to integer factorization problem size")
1451 METH (_KeySZ_toec, "\
1452toec(N) -> M: convert work factor to elliptic curve group order")
1453#undef METHNAME
1454 { 0 }
1455};
1456
d7ab1bab 1457void algorithms_pyinit(void)
1458{
1459 INITTYPE(keysz, root);
1460 INITTYPE(keyszany, keysz);
1461 INITTYPE(keyszrange, keysz);
1462 INITTYPE(keyszset, keysz);
1463 INITTYPE(gccipher, type);
1464 INITTYPE(gcipher, root);
1465 INITTYPE(gchash, type);
1466 INITTYPE(ghash, root);
1467 INITTYPE(gcmac, type);
1468 INITTYPE(gmac, type);
1469 INITTYPE(gmhash, ghash);
03ed9abb
MW		 1470 INITTYPE(gcprp, type);
1471 INITTYPE(gprp, root);
89157adc 1472 addmethods(methods);
d7ab1bab 1473}
1474
d7ab1bab 1475GEN(gcciphers, cipher)
1476GEN(gchashes, hash)
1477GEN(gcmacs, mac)
03ed9abb
MW		 1478#define gcprp prpinfo
1479GEN(gcprps, prp)
d7ab1bab 1480
1481void algorithms_pyinsert(PyObject *mod)
1482{
1483 PyObject *d;
1484 INSERT("KeySZ", keysz_pytype);
1485 INSERT("KeySZAny", keyszany_pytype);
1486 INSERT("KeySZRange", keyszrange_pytype);
1487 INSERT("KeySZSet", keyszset_pytype);
1488 INSERT("GCCipher", gccipher_pytype);
1489 INSERT("GCipher", gcipher_pytype);
1490 INSERT("gcciphers", gcciphers());
1491 INSERT("GCHash", gchash_pytype);
1492 INSERT("GHash", ghash_pytype);
1493 INSERT("gchashes", d = gchashes());
1494 sha_pyobj = PyDict_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
1495 has160_pyobj = PyDict_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
1496 INSERT("GCMAC", gcmac_pytype);
1497 INSERT("GMAC", gmac_pytype);
1498 INSERT("GMACHash", gmhash_pytype);
1499 INSERT("gcmacs", gcmacs());
03ed9abb
MW		 1500 INSERT("GCPRP", gcprp_pytype);
1501 INSERT("GPRP", gprp_pytype);
1502 INSERT("gcprps", gcprps());
d7ab1bab 1503}
1504
1505/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings