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algorithms.c: Reformat some of the `keysz' code.
[catacomb-python] / algorithms.c
1 /* -*-c-*-
2 *
3 * Symmetric cryptography
4 *
5 * (c) 2004 Straylight/Edgeware
6 */
7
8 /*----- Licensing notice --------------------------------------------------*
9 *
10 * This file is part of the Python interface to Catacomb.
11 *
12 * Catacomb/Python is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * Catacomb/Python is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with Catacomb/Python; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 */
26
27 /*----- Header files ------------------------------------------------------*/
28
29 #include "catacomb-python.h"
30 #include "algorithms.h"
31
32 /*----- Key sizes ---------------------------------------------------------*/
33
34 PyTypeObject *keysz_pytype;
35 PyTypeObject *keyszany_pytype, *keyszrange_pytype, *keyszset_pytype;
36 PyObject *sha_pyobj, *has160_pyobj;
37
38 #ifndef KSZ_OPMASK
39 # define KSZ_OPMASK 0x1f
40 #endif
41
42 #ifndef KSZ_16BIT
43 # define KSZ_16BIT 0x20
44 #endif
45
46 PyObject *keysz_pywrap(const octet *k)
47 {
48 unsigned op = *k++;
49 #define ARG(i) (op&KSZ_16BIT ? LOAD16(k + 2*(i)) : k[i])
50 switch (op&KSZ_OPMASK) {
51 case KSZ_ANY: {
52 keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype);
53 o->dfl = ARG(0);
54 return ((PyObject *)o);
55 } break;
56 case KSZ_RANGE: {
57 keyszrange_pyobj *o =
58 PyObject_New(keyszrange_pyobj, keyszrange_pytype);
59 o->dfl = ARG(0);
60 o->min = ARG(1);
61 o->max = ARG(2);
62 o->mod = ARG(3);
63 if (!o->mod) o->mod = 1;
64 return ((PyObject *)o);
65 } break;
66 case KSZ_SET: {
67 keyszset_pyobj *o =
68 PyObject_New(keyszset_pyobj, keyszset_pytype);
69 int i, n;
70 o->dfl = ARG(0);
71 for (i = 0; ARG(i); i++) ;
72 n = i; o->set = PyTuple_New(n);
73 for (i = 0; i < n; i++)
74 PyTuple_SET_ITEM(o->set, i, PyInt_FromLong(ARG(i)));
75 return ((PyObject *)o);
76 } break;
77 default:
78 abort();
79 }
80 #undef ARG
81 }
82
83 static PyObject *keyszany_pynew(PyTypeObject *ty,
84 PyObject *arg, PyObject *kw)
85 {
86 char *kwlist[] = { "default", 0 };
87 int dfl;
88 keysz_pyobj *o;
89
90 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", kwlist, &dfl))
91 goto end;
92 if (dfl < 0) VALERR("key size cannot be negative");
93 o = (keysz_pyobj *)ty->tp_alloc(ty, 0);
94 o->dfl = dfl;
95 return ((PyObject *)o);
96 end:
97 return (0);
98 }
99
100 static PyObject *keyszrange_pynew(PyTypeObject *ty,
101 PyObject *arg, PyObject *kw)
102 {
103 char *kwlist[] = { "default", "min", "max", "mod", 0 };
104 int dfl, min = 0, max = 0, mod = 1;
105 keyszrange_pyobj *o;
106
107 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iii:new", kwlist,
108 &dfl, &min, &max, &mod))
109 goto end;
110 if (dfl < 0 || min < 0) VALERR("key size cannot be negative");
111 if (min > dfl || (max && dfl > max)) VALERR("bad key size bounds");
112 if (mod <= 0 || dfl%mod || min%mod || max%mod)
113 VALERR("bad key size modulus");
114 o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0);
115 o->dfl = dfl;
116 o->min = min;
117 o->max = max;
118 o->mod = mod;
119 return ((PyObject *)o);
120 end:
121 return (0);
122 }
123
124 static PyObject *keyszset_pynew(PyTypeObject *ty,
125 PyObject *arg, PyObject *kw)
126 {
127 char *kwlist[] = { "default", "set", 0 };
128 int dfl, i, n, xx;
129 PyObject *set = 0;
130 PyObject *x = 0, *l = 0;
131 keyszset_pyobj *o = 0;
132
133 if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", kwlist, &dfl, &set))
134 goto end;
135 if (!set) set = PyTuple_New(0);
136 else Py_INCREF(set);
137 if (!PySequence_Check(set)) TYERR("want a sequence");
138 n = PySequence_Size(set);
139 l = PyList_New(0);
140 if (PyErr_Occurred()) goto end;
141 if (dfl < 0) VALERR("key size cannot be negative");
142 x = PyInt_FromLong(dfl);
143 PyList_Append(l, x);
144 Py_DECREF(x);
145 x = 0;
146 for (i = 0; i < n; i++) {
147 if ((x = PySequence_GetItem(set, i)) == 0) goto end;
148 xx = PyInt_AsLong(x);
149 if (PyErr_Occurred()) goto end;
150 if (xx == dfl) continue;
151 if (xx < 0) VALERR("key size cannot be negative");
152 PyList_Append(l, x);
153 Py_DECREF(x);
154 x = 0;
155 }
156 Py_DECREF(set);
157 if ((set = PySequence_Tuple(l)) == 0) goto end;
158 o = (keyszset_pyobj *)ty->tp_alloc(ty, 0);
159 o->dfl = dfl;
160 o->set = set;
161 Py_INCREF(set);
162 end:
163 Py_XDECREF(set);
164 Py_XDECREF(l);
165 Py_XDECREF(x);
166 return ((PyObject *)o);
167 }
168
169 static PyObject *kaget_min(PyObject *me, void *hunoz)
170 { return (PyInt_FromLong(0)); }
171 #define kaget_max kaget_min
172
173 static PyObject *ksget_min(PyObject *me, void *hunoz)
174 {
175 PyObject *set = ((keyszset_pyobj *)me)->set;
176 int i, n, y, x = -1;
177 n = PyTuple_Size(set);
178 for (i = 0; i < n; i++) {
179 y = PyInt_AsLong(PyTuple_GetItem(set, i));
180 if (x == -1 || y < x) x = y;
181 }
182 return (PyInt_FromLong(x));
183 }
184
185 static PyObject *ksget_max(PyObject *me, void *hunoz)
186 {
187 PyObject *set = ((keyszset_pyobj *)me)->set;
188 int i, n, y, x = -1;
189 n = PyTuple_Size(set);
190 for (i = 0; i < n; i++) {
191 y = PyInt_AsLong(PyTuple_GetItem(set, i));
192 if (y > x) x = y;
193 }
194 return (PyInt_FromLong(x));
195 }
196
197 static PyMemberDef keysz_pymembers[] = {
198 #define MEMBERSTRUCT keysz_pyobj
199 #define default dfl /* ugh! */
200 MEMBER(default, T_INT, READONLY, "KSZ.default -> default key size")
201 #undef default
202 #undef MEMBERSTRUCT
203 { 0 }
204 };
205
206 static PyGetSetDef keyszany_pygetset[] = {
207 #define GETSETNAME(op, name) ka##op##_##name
208 GET (min, "KSZ.min -> smallest allowed key size")
209 GET (max, "KSZ.min -> largest allowed key size")
210 #undef GETSETNAME
211 { 0 }
212 };
213
214 static PyMemberDef keyszrange_pymembers[] = {
215 #define MEMBERSTRUCT keyszrange_pyobj
216 MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size")
217 MEMBER(max, T_INT, READONLY, "KSZ.min -> largest allowed key size")
218 MEMBER(mod, T_INT, READONLY,
219 "KSZ.mod -> key size must be a multiple of this")
220 #undef MEMBERSTRUCT
221 { 0 }
222 };
223
224 static PyGetSetDef keyszset_pygetset[] = {
225 #define GETSETNAME(op, name) ks##op##_##name
226 GET (min, "KSZ.min -> smallest allowed key size")
227 GET (max, "KSZ.min -> largest allowed key size")
228 #undef GETSETNAME
229 { 0 }
230 };
231
232 static PyMemberDef keyszset_pymembers[] = {
233 #define MEMBERSTRUCT keyszset_pyobj
234 MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes")
235 #undef MEMBERSTRUCT
236 { 0 }
237 };
238
239 static PyTypeObject keysz_pytype_skel = {
240 PyObject_HEAD_INIT(0) 0, /* Header */
241 "KeySZ", /* @tp_name@ */
242 sizeof(keysz_pyobj), /* @tp_basicsize@ */
243 0, /* @tp_itemsize@ */
244
245 0, /* @tp_dealloc@ */
246 0, /* @tp_print@ */
247 0, /* @tp_getattr@ */
248 0, /* @tp_setattr@ */
249 0, /* @tp_compare@ */
250 0, /* @tp_repr@ */
251 0, /* @tp_as_number@ */
252 0, /* @tp_as_sequence@ */
253 0, /* @tp_as_mapping@ */
254 0, /* @tp_hash@ */
255 0, /* @tp_call@ */
256 0, /* @tp_str@ */
257 0, /* @tp_getattro@ */
258 0, /* @tp_setattro@ */
259 0, /* @tp_as_buffer@ */
260 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
261 Py_TPFLAGS_BASETYPE,
262
263 /* @tp_doc@ */
264 "Key size constraints.",
265
266 0, /* @tp_traverse@ */
267 0, /* @tp_clear@ */
268 0, /* @tp_richcompare@ */
269 0, /* @tp_weaklistoffset@ */
270 0, /* @tp_iter@ */
271 0, /* @tp_iternext@ */
272 0, /* @tp_methods@ */
273 keysz_pymembers, /* @tp_members@ */
274 0, /* @tp_getset@ */
275 0, /* @tp_base@ */
276 0, /* @tp_dict@ */
277 0, /* @tp_descr_get@ */
278 0, /* @tp_descr_set@ */
279 0, /* @tp_dictoffset@ */
280 0, /* @tp_init@ */
281 PyType_GenericAlloc, /* @tp_alloc@ */
282 abstract_pynew, /* @tp_new@ */
283 0, /* @tp_free@ */
284 0 /* @tp_is_gc@ */
285 };
286
287 static PyTypeObject keyszany_pytype_skel = {
288 PyObject_HEAD_INIT(0) 0, /* Header */
289 "KeySZAny", /* @tp_name@ */
290 sizeof(keysz_pyobj), /* @tp_basicsize@ */
291 0, /* @tp_itemsize@ */
292
293 0, /* @tp_dealloc@ */
294 0, /* @tp_print@ */
295 0, /* @tp_getattr@ */
296 0, /* @tp_setattr@ */
297 0, /* @tp_compare@ */
298 0, /* @tp_repr@ */
299 0, /* @tp_as_number@ */
300 0, /* @tp_as_sequence@ */
301 0, /* @tp_as_mapping@ */
302 0, /* @tp_hash@ */
303 0, /* @tp_call@ */
304 0, /* @tp_str@ */
305 0, /* @tp_getattro@ */
306 0, /* @tp_setattro@ */
307 0, /* @tp_as_buffer@ */
308 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
309 Py_TPFLAGS_BASETYPE,
310
311 /* @tp_doc@ */
312 "Key size constraints. This object imposes no constraints on size.",
313
314 0, /* @tp_traverse@ */
315 0, /* @tp_clear@ */
316 0, /* @tp_richcompare@ */
317 0, /* @tp_weaklistoffset@ */
318 0, /* @tp_iter@ */
319 0, /* @tp_iternext@ */
320 0, /* @tp_methods@ */
321 0, /* @tp_members@ */
322 keyszany_pygetset, /* @tp_getset@ */
323 0, /* @tp_base@ */
324 0, /* @tp_dict@ */
325 0, /* @tp_descr_get@ */
326 0, /* @tp_descr_set@ */
327 0, /* @tp_dictoffset@ */
328 0, /* @tp_init@ */
329 PyType_GenericAlloc, /* @tp_alloc@ */
330 keyszany_pynew, /* @tp_new@ */
331 0, /* @tp_free@ */
332 0 /* @tp_is_gc@ */
333 };
334
335 static PyTypeObject keyszrange_pytype_skel = {
336 PyObject_HEAD_INIT(0) 0, /* Header */
337 "KeySZRange", /* @tp_name@ */
338 sizeof(keyszrange_pyobj), /* @tp_basicsize@ */
339 0, /* @tp_itemsize@ */
340
341 0, /* @tp_dealloc@ */
342 0, /* @tp_print@ */
343 0, /* @tp_getattr@ */
344 0, /* @tp_setattr@ */
345 0, /* @tp_compare@ */
346 0, /* @tp_repr@ */
347 0, /* @tp_as_number@ */
348 0, /* @tp_as_sequence@ */
349 0, /* @tp_as_mapping@ */
350 0, /* @tp_hash@ */
351 0, /* @tp_call@ */
352 0, /* @tp_str@ */
353 0, /* @tp_getattro@ */
354 0, /* @tp_setattro@ */
355 0, /* @tp_as_buffer@ */
356 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
357 Py_TPFLAGS_BASETYPE,
358
359 /* @tp_doc@ */
360 "Key size constraints. This object asserts minimum and maximum (if\n\
361 sizes, and requires the key length to be a multiple of some value.",
362
363 0, /* @tp_traverse@ */
364 0, /* @tp_clear@ */
365 0, /* @tp_richcompare@ */
366 0, /* @tp_weaklistoffset@ */
367 0, /* @tp_iter@ */
368 0, /* @tp_iternext@ */
369 0, /* @tp_methods@ */
370 keyszrange_pymembers, /* @tp_members@ */
371 0, /* @tp_getset@ */
372 0, /* @tp_base@ */
373 0, /* @tp_dict@ */
374 0, /* @tp_descr_get@ */
375 0, /* @tp_descr_set@ */
376 0, /* @tp_dictoffset@ */
377 0, /* @tp_init@ */
378 PyType_GenericAlloc, /* @tp_alloc@ */
379 keyszrange_pynew, /* @tp_new@ */
380 0, /* @tp_free@ */
381 0 /* @tp_is_gc@ */
382 };
383
384 static PyTypeObject keyszset_pytype_skel = {
385 PyObject_HEAD_INIT(0) 0, /* Header */
386 "KeySZSet", /* @tp_name@ */
387 sizeof(keyszset_pyobj), /* @tp_basicsize@ */
388 0, /* @tp_itemsize@ */
389
390 0, /* @tp_dealloc@ */
391 0, /* @tp_print@ */
392 0, /* @tp_getattr@ */
393 0, /* @tp_setattr@ */
394 0, /* @tp_compare@ */
395 0, /* @tp_repr@ */
396 0, /* @tp_as_number@ */
397 0, /* @tp_as_sequence@ */
398 0, /* @tp_as_mapping@ */
399 0, /* @tp_hash@ */
400 0, /* @tp_call@ */
401 0, /* @tp_str@ */
402 0, /* @tp_getattro@ */
403 0, /* @tp_setattro@ */
404 0, /* @tp_as_buffer@ */
405 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
406 Py_TPFLAGS_BASETYPE,
407
408 /* @tp_doc@ */
409 "Key size constraints. This object requires the key to be one of a\n\
410 few listed sizes.",
411
412 0, /* @tp_traverse@ */
413 0, /* @tp_clear@ */
414 0, /* @tp_richcompare@ */
415 0, /* @tp_weaklistoffset@ */
416 0, /* @tp_iter@ */
417 0, /* @tp_iternext@ */
418 0, /* @tp_methods@ */
419 keyszset_pymembers, /* @tp_members@ */
420 keyszset_pygetset, /* @tp_getset@ */
421 0, /* @tp_base@ */
422 0, /* @tp_dict@ */
423 0, /* @tp_descr_get@ */
424 0, /* @tp_descr_set@ */
425 0, /* @tp_dictoffset@ */
426 0, /* @tp_init@ */
427 PyType_GenericAlloc, /* @tp_alloc@ */
428 keyszset_pynew, /* @tp_new@ */
429 0, /* @tp_free@ */
430 0 /* @tp_is_gc@ */
431 };
432
433 #define KSZCONVOP(op) \
434 static PyObject *meth__KeySZ_##op(PyObject *me, PyObject *arg) \
435 { \
436 double x, y; \
437 if (!PyArg_ParseTuple(arg, "Od:" #op, &me, &x)) return (0); \
438 y = keysz_##op(x); \
439 return (PyFloat_FromDouble(y)); \
440 }
441 KSZCONVOP(fromdl)
442 KSZCONVOP(fromschnorr)
443 KSZCONVOP(fromif)
444 KSZCONVOP(fromec)
445 KSZCONVOP(todl)
446 KSZCONVOP(toschnorr)
447 KSZCONVOP(toif)
448 KSZCONVOP(toec)
449 #undef KSZCONVOP
450
451 /*----- Symmetric encryption ----------------------------------------------*/
452
453 PyTypeObject *gccipher_pytype, *gcipher_pytype;
454
455 CONVFUNC(gccipher, gccipher *, GCCIPHER_CC)
456 CONVFUNC(gcipher, gcipher *, GCIPHER_C)
457
458 PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c, unsigned f)
459 {
460 gcipher_pyobj *g;
461 if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c));
462 else Py_INCREF(cobj);
463 g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj);
464 g->c = c;
465 g->f = f;
466 return ((PyObject *)g);
467 }
468
469 static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
470 {
471 char *kwlist[] = { "k", 0 };
472 char *k;
473 Py_ssize_t sz;
474
475 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
476 goto end;
477 if (keysz(sz, GCCIPHER_CC(ty)->keysz) != sz) VALERR("bad key length");
478 return (gcipher_pywrap((PyObject *)ty,
479 GC_INIT(GCCIPHER_CC(ty), k, sz),
480 f_freeme));
481 end:
482 return (0);
483 }
484
485 PyObject *gccipher_pywrap(gccipher *cc)
486 {
487 gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name);
488 g->cc = cc;
489 g->ty.ht_type.tp_basicsize = sizeof(gcipher_pyobj);
490 g->ty.ht_type.tp_base = gcipher_pytype;
491 Py_INCREF(gcipher_pytype);
492 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
493 Py_TPFLAGS_BASETYPE |
494 Py_TPFLAGS_HEAPTYPE);
495 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
496 g->ty.ht_type.tp_free = 0;
497 g->ty.ht_type.tp_new = gcipher_pynew;
498 typeready(&g->ty.ht_type);
499 return ((PyObject *)g);
500 }
501
502 static void gcipher_pydealloc(PyObject *me)
503 {
504 if (GCIPHER_F(me) & f_freeme)
505 GC_DESTROY(GCIPHER_C(me));
506 Py_DECREF(me->ob_type);
507 FREEOBJ(me);
508 }
509
510 static PyObject *gccget_name(PyObject *me, void *hunoz)
511 { return (PyString_FromString(GCCIPHER_CC(me)->name)); }
512
513 static PyObject *gccget_keysz(PyObject *me, void *hunoz)
514 { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); }
515
516 static PyObject *gccget_blksz(PyObject *me, void *hunoz)
517 { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); }
518
519 static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg)
520 {
521 char *p;
522 Py_ssize_t sz;
523 PyObject *rc = 0;
524
525 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &sz)) return (0);
526 rc = bytestring_pywrap(0, sz);
527 GC_ENCRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
528 return (rc);
529 }
530
531 static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg)
532 {
533 char *p;
534 int sz;
535 PyObject *rc = 0;
536
537 if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0);
538 rc = bytestring_pywrap(0, sz);
539 p = PyString_AS_STRING(rc);
540 memset(p, 0, sz);
541 GC_ENCRYPT(GCIPHER_C(me), p, p, sz);
542 return (rc);
543 }
544
545 static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg)
546 {
547 char *p;
548 Py_ssize_t sz;
549 PyObject *rc = 0;
550
551 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &sz)) return (0);
552 rc = bytestring_pywrap(0, sz);
553 GC_DECRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz);
554 return (rc);
555 }
556
557 static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg)
558 {
559 char *p;
560 int sz;
561 PyObject *rc = 0;
562
563 if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0);
564 rc = bytestring_pywrap(0, sz);
565 p = PyString_AS_STRING(rc);
566 memset(p, 0, sz);
567 GC_DECRYPT(GCIPHER_C(me), p, p, sz);
568 return (rc);
569 }
570
571 static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg)
572 {
573 char *p;
574 Py_ssize_t sz;
575
576 if (!PyArg_ParseTuple(arg, "s#:setiv", &p, &sz)) goto end;
577 if (!GCIPHER_C(me)->ops->setiv) VALERR("`setiv' not supported");
578 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
579 if (sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length");
580 GC_SETIV(GCIPHER_C(me), p);
581 RETURN_ME;
582 end:
583 return (0);
584 }
585
586 static PyObject *gcmeth_bdry(PyObject *me, PyObject *arg)
587 {
588 if (!PyArg_ParseTuple(arg, ":bdry")) goto end;
589 if (!GCIPHER_C(me)->ops->bdry) VALERR("`bdry' not supported");
590 if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode");
591 GC_BDRY(GCIPHER_C(me));
592 RETURN_ME;
593 end:
594 return (0);
595 }
596
597 static PyGetSetDef gccipher_pygetset[] = {
598 #define GETSETNAME(op, name) gcc##op##_##name
599 GET (keysz, "CC.keysz -> acceptable key sizes")
600 GET (blksz, "CC.blksz -> block size, or zero")
601 GET (name, "CC.name -> name of this kind of cipher")
602 #undef GETSETNAME
603 { 0 }
604 };
605
606 static PyMethodDef gcipher_pymethods[] = {
607 #define METHNAME(name) gcmeth_##name
608 METH (encrypt, "C.encrypt(PT) -> CT")
609 METH (enczero, "C.enczero(N) -> CT")
610 METH (decrypt, "C.decrypt(CT) -> PT")
611 METH (deczero, "C.deczero(N) -> PT")
612 METH (setiv, "C.setiv(IV)")
613 METH (bdry, "C.bdry()")
614 #undef METHNAME
615 { 0 }
616 };
617
618 static PyTypeObject gccipher_pytype_skel = {
619 PyObject_HEAD_INIT(0) 0, /* Header */
620 "GCCipher", /* @tp_name@ */
621 sizeof(gccipher_pyobj), /* @tp_basicsize@ */
622 0, /* @tp_itemsize@ */
623
624 0, /* @tp_dealloc@ */
625 0, /* @tp_print@ */
626 0, /* @tp_getattr@ */
627 0, /* @tp_setattr@ */
628 0, /* @tp_compare@ */
629 0, /* @tp_repr@ */
630 0, /* @tp_as_number@ */
631 0, /* @tp_as_sequence@ */
632 0, /* @tp_as_mapping@ */
633 0, /* @tp_hash@ */
634 0, /* @tp_call@ */
635 0, /* @tp_str@ */
636 0, /* @tp_getattro@ */
637 0, /* @tp_setattro@ */
638 0, /* @tp_as_buffer@ */
639 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
640 Py_TPFLAGS_BASETYPE,
641
642 /* @tp_doc@ */
643 "Symmetric cipher metaclass.",
644
645 0, /* @tp_traverse@ */
646 0, /* @tp_clear@ */
647 0, /* @tp_richcompare@ */
648 0, /* @tp_weaklistoffset@ */
649 0, /* @tp_iter@ */
650 0, /* @tp_iternext@ */
651 0, /* @tp_methods@ */
652 0, /* @tp_members@ */
653 gccipher_pygetset, /* @tp_getset@ */
654 0, /* @tp_base@ */
655 0, /* @tp_dict@ */
656 0, /* @tp_descr_get@ */
657 0, /* @tp_descr_set@ */
658 0, /* @tp_dictoffset@ */
659 0, /* @tp_init@ */
660 PyType_GenericAlloc, /* @tp_alloc@ */
661 abstract_pynew, /* @tp_new@ */
662 0, /* @tp_free@ */
663 0 /* @tp_is_gc@ */
664 };
665
666 static PyTypeObject gcipher_pytype_skel = {
667 PyObject_HEAD_INIT(0) 0, /* Header */
668 "GCipher", /* @tp_name@ */
669 sizeof(gcipher_pyobj), /* @tp_basicsize@ */
670 0, /* @tp_itemsize@ */
671
672 gcipher_pydealloc, /* @tp_dealloc@ */
673 0, /* @tp_print@ */
674 0, /* @tp_getattr@ */
675 0, /* @tp_setattr@ */
676 0, /* @tp_compare@ */
677 0, /* @tp_repr@ */
678 0, /* @tp_as_number@ */
679 0, /* @tp_as_sequence@ */
680 0, /* @tp_as_mapping@ */
681 0, /* @tp_hash@ */
682 0, /* @tp_call@ */
683 0, /* @tp_str@ */
684 0, /* @tp_getattro@ */
685 0, /* @tp_setattro@ */
686 0, /* @tp_as_buffer@ */
687 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
688 Py_TPFLAGS_BASETYPE,
689
690 /* @tp_doc@ */
691 "Symmetric cipher, abstract base class.",
692
693 0, /* @tp_traverse@ */
694 0, /* @tp_clear@ */
695 0, /* @tp_richcompare@ */
696 0, /* @tp_weaklistoffset@ */
697 0, /* @tp_iter@ */
698 0, /* @tp_iternext@ */
699 gcipher_pymethods, /* @tp_methods@ */
700 0, /* @tp_members@ */
701 0, /* @tp_getset@ */
702 0, /* @tp_base@ */
703 0, /* @tp_dict@ */
704 0, /* @tp_descr_get@ */
705 0, /* @tp_descr_set@ */
706 0, /* @tp_dictoffset@ */
707 0, /* @tp_init@ */
708 PyType_GenericAlloc, /* @tp_alloc@ */
709 abstract_pynew, /* @tp_new@ */
710 0, /* @tp_free@ */
711 0 /* @tp_is_gc@ */
712 };
713
714 /*----- Hash functions ----------------------------------------------------*/
715
716 PyTypeObject *gchash_pytype, *ghash_pytype;
717
718 CONVFUNC(gchash, gchash *, GCHASH_CH)
719 CONVFUNC(ghash, ghash *, GHASH_H)
720
721 static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
722 {
723 char *kwlist[] = { 0 };
724 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist))
725 goto end;
726 return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty)), f_freeme));
727 end:
728 return (0);
729 }
730
731 PyObject *gchash_pywrap(gchash *ch)
732 {
733 gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name);
734 g->ch = ch;
735 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
736 g->ty.ht_type.tp_base = ghash_pytype;
737 Py_INCREF(ghash_pytype);
738 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
739 Py_TPFLAGS_BASETYPE |
740 Py_TPFLAGS_HEAPTYPE);
741 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
742 g->ty.ht_type.tp_free = 0;
743 g->ty.ht_type.tp_new = ghash_pynew;
744 typeready(&g->ty.ht_type);
745 return ((PyObject *)g);
746 }
747
748 PyObject *ghash_pywrap(PyObject *cobj, ghash *h, unsigned f)
749 {
750 ghash_pyobj *g;
751 if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h));
752 else Py_INCREF(cobj);
753 g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj);
754 g->h = h;
755 g->f = f;
756 return ((PyObject *)g);
757 }
758
759 static void ghash_pydealloc(PyObject *me)
760 {
761 if (GHASH_F(me) & f_freeme)
762 GH_DESTROY(GHASH_H(me));
763 Py_DECREF(me->ob_type);
764 FREEOBJ(me);
765 }
766
767 static PyObject *gchget_name(PyObject *me, void *hunoz)
768 { return (PyString_FromString(GCHASH_CH(me)->name)); }
769
770 static PyObject *gchget_hashsz(PyObject *me, void *hunoz)
771 { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); }
772
773 static PyObject *gchget_bufsz(PyObject *me, void *hunoz)
774 { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); }
775
776 static PyObject *ghmeth_hash(PyObject *me, PyObject *arg)
777 {
778 char *p;
779 Py_ssize_t sz;
780 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
781 GH_HASH(GHASH_H(me), p, sz);
782 RETURN_ME;
783 }
784
785 #define GHMETH_HASHU_(n, W, w) \
786 static PyObject *ghmeth_hashu##w(PyObject *me, PyObject *arg) \
787 { \
788 uint##n x; \
789 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
790 GH_HASHU##W(GHASH_H(me), x); \
791 RETURN_ME; \
792 end: \
793 return (0); \
794 }
795 DOUINTCONV(GHMETH_HASHU_)
796
797 #define GHMETH_HASHBUF_(n, W, w) \
798 static PyObject *ghmeth_hashbuf##w(PyObject *me, PyObject *arg) \
799 { \
800 char *p; \
801 Py_ssize_t sz; \
802 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
803 if (sz > MASK##n) TYERR("string too long"); \
804 GH_HASHBUF##W(GHASH_H(me), p, sz); \
805 RETURN_ME; \
806 end: \
807 return (0); \
808 }
809 DOUINTCONV(GHMETH_HASHBUF_)
810
811 static PyObject *ghmeth_hashstrz(PyObject *me, PyObject *arg)
812 {
813 char *p;
814 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
815 GH_HASHSTRZ(GHASH_H(me), p);
816 RETURN_ME;
817 }
818
819 static PyObject *ghmeth_done(PyObject *me, PyObject *arg)
820 {
821 ghash *g;
822 PyObject *rc;
823 if (!PyArg_ParseTuple(arg, ":done")) return (0);
824 g = GH_COPY(GHASH_H(me));
825 rc = bytestring_pywrap(0, g->ops->c->hashsz);
826 GH_DONE(g, PyString_AS_STRING(rc));
827 GH_DESTROY(g);
828 return (rc);
829 }
830
831 static PyGetSetDef gchash_pygetset[] = {
832 #define GETSETNAME(op, name) gch##op##_##name
833 GET (bufsz, "CH.bufsz -> hash buffer size, or zero")
834 GET (hashsz, "CH.hashsz -> hash output size")
835 GET (name, "CH.name -> name of this kind of hash")
836 #undef GETSETNAME
837 { 0 }
838 };
839
840 static PyMethodDef ghash_pymethods[] = {
841 #define METHNAME(name) ghmeth_##name
842 METH (hash, "H.hash(M)")
843 #define METHU_(n, W, w) METH(hashu##w, "H.hashu" #w "(WORD)")
844 DOUINTCONV(METHU_)
845 #undef METHU_
846 #define METHBUF_(n, W, w) METH(hashbuf##w, "H.hashbuf" #w "(BYTES)")
847 DOUINTCONV(METHBUF_)
848 #undef METHBUF_
849 METH (hashstrz, "H.hashstrz(STRING)")
850 METH (done, "H.done() -> HASH")
851 #undef METHNAME
852 { 0 }
853 };
854
855 static PyTypeObject gchash_pytype_skel = {
856 PyObject_HEAD_INIT(0) 0, /* Header */
857 "GCHash", /* @tp_name@ */
858 sizeof(gchash_pyobj), /* @tp_basicsize@ */
859 0, /* @tp_itemsize@ */
860
861 0, /* @tp_dealloc@ */
862 0, /* @tp_print@ */
863 0, /* @tp_getattr@ */
864 0, /* @tp_setattr@ */
865 0, /* @tp_compare@ */
866 0, /* @tp_repr@ */
867 0, /* @tp_as_number@ */
868 0, /* @tp_as_sequence@ */
869 0, /* @tp_as_mapping@ */
870 0, /* @tp_hash@ */
871 0, /* @tp_call@ */
872 0, /* @tp_str@ */
873 0, /* @tp_getattro@ */
874 0, /* @tp_setattro@ */
875 0, /* @tp_as_buffer@ */
876 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
877 Py_TPFLAGS_BASETYPE,
878
879 /* @tp_doc@ */
880 "Hash function metaclass.",
881
882 0, /* @tp_traverse@ */
883 0, /* @tp_clear@ */
884 0, /* @tp_richcompare@ */
885 0, /* @tp_weaklistoffset@ */
886 0, /* @tp_iter@ */
887 0, /* @tp_iternext@ */
888 0, /* @tp_methods@ */
889 0, /* @tp_members@ */
890 gchash_pygetset, /* @tp_getset@ */
891 0, /* @tp_base@ */
892 0, /* @tp_dict@ */
893 0, /* @tp_descr_get@ */
894 0, /* @tp_descr_set@ */
895 0, /* @tp_dictoffset@ */
896 0, /* @tp_init@ */
897 PyType_GenericAlloc, /* @tp_alloc@ */
898 abstract_pynew, /* @tp_new@ */
899 0, /* @tp_free@ */
900 0 /* @tp_is_gc@ */
901 };
902
903 static PyTypeObject ghash_pytype_skel = {
904 PyObject_HEAD_INIT(0) 0, /* Header */
905 "GHash", /* @tp_name@ */
906 sizeof(ghash_pyobj), /* @tp_basicsize@ */
907 0, /* @tp_itemsize@ */
908
909 ghash_pydealloc, /* @tp_dealloc@ */
910 0, /* @tp_print@ */
911 0, /* @tp_getattr@ */
912 0, /* @tp_setattr@ */
913 0, /* @tp_compare@ */
914 0, /* @tp_repr@ */
915 0, /* @tp_as_number@ */
916 0, /* @tp_as_sequence@ */
917 0, /* @tp_as_mapping@ */
918 0, /* @tp_hash@ */
919 0, /* @tp_call@ */
920 0, /* @tp_str@ */
921 0, /* @tp_getattro@ */
922 0, /* @tp_setattro@ */
923 0, /* @tp_as_buffer@ */
924 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
925 Py_TPFLAGS_BASETYPE,
926
927 /* @tp_doc@ */
928 "Hash function, abstract base class.",
929
930 0, /* @tp_traverse@ */
931 0, /* @tp_clear@ */
932 0, /* @tp_richcompare@ */
933 0, /* @tp_weaklistoffset@ */
934 0, /* @tp_iter@ */
935 0, /* @tp_iternext@ */
936 ghash_pymethods, /* @tp_methods@ */
937 0, /* @tp_members@ */
938 0, /* @tp_getset@ */
939 0, /* @tp_base@ */
940 0, /* @tp_dict@ */
941 0, /* @tp_descr_get@ */
942 0, /* @tp_descr_set@ */
943 0, /* @tp_dictoffset@ */
944 0, /* @tp_init@ */
945 PyType_GenericAlloc, /* @tp_alloc@ */
946 abstract_pynew, /* @tp_new@ */
947 0, /* @tp_free@ */
948 0 /* @tp_is_gc@ */
949 };
950
951 /*----- Message authentication --------------------------------------------*/
952
953 PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype;
954
955 CONVFUNC(gcmac, gcmac *, GCMAC_CM)
956 CONVFUNC(gmac, gmac *, GMAC_M)
957 CONVFUNC(gmhash, ghash *, GHASH_H)
958
959 static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
960 {
961 char *kwlist[] = { "k", 0 };
962 char *k;
963 Py_ssize_t sz;
964
965 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
966 goto end;
967 if (keysz(sz, GCMAC_CM(ty)->keysz) != sz) VALERR("bad key length");
968 return (gmac_pywrap((PyObject *)ty,
969 GM_KEY(GCMAC_CM(ty), k, sz),
970 f_freeme));
971 end:
972 return (0);
973 }
974
975 static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
976 {
977 char *kwlist[] = { 0 };
978 ghash_pyobj *g;
979
980 if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) return (0);
981 g = PyObject_NEW(ghash_pyobj, ty);
982 g->h = GM_INIT(GMAC_M(ty));
983 g->f = f_freeme;
984 Py_INCREF(ty);
985 return ((PyObject *)g);
986 }
987
988 PyObject *gcmac_pywrap(gcmac *cm)
989 {
990 gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name);
991 g->cm = cm;
992 g->ty.ht_type.tp_basicsize = sizeof(gmac_pyobj);
993 g->ty.ht_type.tp_base = gmac_pytype;
994 Py_INCREF(gmac_pytype);
995 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
996 Py_TPFLAGS_BASETYPE |
997 Py_TPFLAGS_HEAPTYPE);
998 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
999 g->ty.ht_type.tp_free = 0;
1000 g->ty.ht_type.tp_new = gmac_pynew;
1001 typeready(&g->ty.ht_type);
1002 return ((PyObject *)g);
1003 }
1004
1005 PyObject *gmac_pywrap(PyObject *cobj, gmac *m, unsigned f)
1006 {
1007 gmac_pyobj *g;
1008 if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m));
1009 else Py_INCREF(cobj);
1010 g = newtype((PyTypeObject *)cobj, 0, 0);
1011 g->ty.ht_type.tp_basicsize = sizeof(ghash_pyobj);
1012 g->ty.ht_name = PyString_FromFormat("%s(keyed)", m->ops->c->name);
1013 g->ty.ht_type.tp_name = PyString_AS_STRING(g->ty.ht_name);
1014 g->ty.ht_type.tp_base = gmhash_pytype;
1015 Py_INCREF(gmac_pytype);
1016 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1017 Py_TPFLAGS_BASETYPE |
1018 Py_TPFLAGS_HEAPTYPE);
1019 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1020 g->ty.ht_type.tp_free = 0;
1021 g->ty.ht_type.tp_new = gmhash_pynew;
1022 typeready(&g->ty.ht_type);
1023 g->m = m;
1024 g->f = f;
1025 return ((PyObject *)g);
1026 }
1027
1028 static void gmac_pydealloc(PyObject *me)
1029 {
1030 if (GMAC_F(me) & f_freeme)
1031 GM_DESTROY(GMAC_M(me));
1032 Py_DECREF(me->ob_type);
1033 PyType_Type.tp_dealloc(me);
1034 }
1035
1036 static PyObject *gcmget_name(PyObject *me, void *hunoz)
1037 { return (PyString_FromString(GCMAC_CM(me)->name)); }
1038
1039 static PyObject *gcmget_keysz(PyObject *me, void *hunoz)
1040 { return (keysz_pywrap(GCMAC_CM(me)->keysz)); }
1041
1042 static PyObject *gcmget_tagsz(PyObject *me, void *hunoz)
1043 { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); }
1044
1045 static PyGetSetDef gcmac_pygetset[] = {
1046 #define GETSETNAME(op, name) gcm##op##_##name
1047 GET (keysz, "CM.keysz -> acceptable key sizes")
1048 GET (tagsz, "CM.tagsz -> MAC output size")
1049 GET (name, "CM.name -> name of this kind of MAC")
1050 #undef GETSETNAME
1051 { 0 }
1052 };
1053
1054 static PyTypeObject gcmac_pytype_skel = {
1055 PyObject_HEAD_INIT(0) 0, /* Header */
1056 "GCMAC", /* @tp_name@ */
1057 sizeof(gchash_pyobj), /* @tp_basicsize@ */
1058 0, /* @tp_itemsize@ */
1059
1060 0, /* @tp_dealloc@ */
1061 0, /* @tp_print@ */
1062 0, /* @tp_getattr@ */
1063 0, /* @tp_setattr@ */
1064 0, /* @tp_compare@ */
1065 0, /* @tp_repr@ */
1066 0, /* @tp_as_number@ */
1067 0, /* @tp_as_sequence@ */
1068 0, /* @tp_as_mapping@ */
1069 0, /* @tp_hash@ */
1070 0, /* @tp_call@ */
1071 0, /* @tp_str@ */
1072 0, /* @tp_getattro@ */
1073 0, /* @tp_setattro@ */
1074 0, /* @tp_as_buffer@ */
1075 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1076 Py_TPFLAGS_BASETYPE,
1077
1078 /* @tp_doc@ */
1079 "Message authentication code metametaclass.",
1080
1081 0, /* @tp_traverse@ */
1082 0, /* @tp_clear@ */
1083 0, /* @tp_richcompare@ */
1084 0, /* @tp_weaklistoffset@ */
1085 0, /* @tp_iter@ */
1086 0, /* @tp_iternext@ */
1087 0, /* @tp_methods@ */
1088 0, /* @tp_members@ */
1089 gcmac_pygetset, /* @tp_getset@ */
1090 0, /* @tp_base@ */
1091 0, /* @tp_dict@ */
1092 0, /* @tp_descr_get@ */
1093 0, /* @tp_descr_set@ */
1094 0, /* @tp_dictoffset@ */
1095 0, /* @tp_init@ */
1096 PyType_GenericAlloc, /* @tp_alloc@ */
1097 abstract_pynew, /* @tp_new@ */
1098 0, /* @tp_free@ */
1099 0 /* @tp_is_gc@ */
1100 };
1101
1102 static PyTypeObject gmac_pytype_skel = {
1103 PyObject_HEAD_INIT(0) 0, /* Header */
1104 "GMAC", /* @tp_name@ */
1105 sizeof(gmac_pyobj), /* @tp_basicsize@ */
1106 0, /* @tp_itemsize@ */
1107
1108 gmac_pydealloc, /* @tp_dealloc@ */
1109 0, /* @tp_print@ */
1110 0, /* @tp_getattr@ */
1111 0, /* @tp_setattr@ */
1112 0, /* @tp_compare@ */
1113 0, /* @tp_repr@ */
1114 0, /* @tp_as_number@ */
1115 0, /* @tp_as_sequence@ */
1116 0, /* @tp_as_mapping@ */
1117 0, /* @tp_hash@ */
1118 0, /* @tp_call@ */
1119 0, /* @tp_str@ */
1120 0, /* @tp_getattro@ */
1121 0, /* @tp_setattro@ */
1122 0, /* @tp_as_buffer@ */
1123 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1124 Py_TPFLAGS_BASETYPE,
1125
1126 /* @tp_doc@ */
1127 "Message authentication code metaclass, abstract base class.",
1128
1129 0, /* @tp_traverse@ */
1130 0, /* @tp_clear@ */
1131 0, /* @tp_richcompare@ */
1132 0, /* @tp_weaklistoffset@ */
1133 0, /* @tp_iter@ */
1134 0, /* @tp_iternext@ */
1135 0, /* @tp_methods@ */
1136 0, /* @tp_members@ */
1137 0, /* @tp_getset@ */
1138 0, /* @tp_base@ */
1139 0, /* @tp_dict@ */
1140 0, /* @tp_descr_get@ */
1141 0, /* @tp_descr_set@ */
1142 0, /* @tp_dictoffset@ */
1143 0, /* @tp_init@ */
1144 PyType_GenericAlloc, /* @tp_alloc@ */
1145 abstract_pynew, /* @tp_new@ */
1146 0, /* @tp_free@ */
1147 0 /* @tp_is_gc@ */
1148 };
1149
1150 static PyTypeObject gmhash_pytype_skel = {
1151 PyObject_HEAD_INIT(0) 0, /* Header */
1152 "GMACHash", /* @tp_name@ */
1153 sizeof(ghash_pyobj), /* @tp_basicsize@ */
1154 0, /* @tp_itemsize@ */
1155
1156 ghash_pydealloc, /* @tp_dealloc@ */
1157 0, /* @tp_print@ */
1158 0, /* @tp_getattr@ */
1159 0, /* @tp_setattr@ */
1160 0, /* @tp_compare@ */
1161 0, /* @tp_repr@ */
1162 0, /* @tp_as_number@ */
1163 0, /* @tp_as_sequence@ */
1164 0, /* @tp_as_mapping@ */
1165 0, /* @tp_hash@ */
1166 0, /* @tp_call@ */
1167 0, /* @tp_str@ */
1168 0, /* @tp_getattro@ */
1169 0, /* @tp_setattro@ */
1170 0, /* @tp_as_buffer@ */
1171 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1172 Py_TPFLAGS_BASETYPE,
1173
1174 /* @tp_doc@ */
1175 "Message authentication code, abstract base class.",
1176
1177 0, /* @tp_traverse@ */
1178 0, /* @tp_clear@ */
1179 0, /* @tp_richcompare@ */
1180 0, /* @tp_weaklistoffset@ */
1181 0, /* @tp_iter@ */
1182 0, /* @tp_iternext@ */
1183 0, /* @tp_methods@ */
1184 0, /* @tp_members@ */
1185 0, /* @tp_getset@ */
1186 0, /* @tp_base@ */
1187 0, /* @tp_dict@ */
1188 0, /* @tp_descr_get@ */
1189 0, /* @tp_descr_set@ */
1190 0, /* @tp_dictoffset@ */
1191 0, /* @tp_init@ */
1192 PyType_GenericAlloc, /* @tp_alloc@ */
1193 abstract_pynew, /* @tp_new@ */
1194 0, /* @tp_free@ */
1195 0 /* @tp_is_gc@ */
1196 };
1197
1198 /*----- Special snowflake for Poly1305 ------------------------------------*/
1199
1200 PyTypeObject *poly1305cls_pytype, *poly1305key_pytype, *poly1305hash_pytype;
1201
1202 typedef struct poly1305key_pyobj {
1203 PyHeapTypeObject ty;
1204 poly1305_key k;
1205 } poly1305key_pyobj;
1206
1207 typedef struct poly1305hash_pyobj {
1208 PyObject_HEAD
1209 unsigned f;
1210 #define f_mask 1u
1211 poly1305_ctx ctx;
1212 } poly1305hash_pyobj;
1213
1214 #define P1305_F(o) (((poly1305hash_pyobj *)(o))->f)
1215 #define P1305_CTX(o) (&((poly1305hash_pyobj *)(o))->ctx)
1216 CONVFUNC(poly1305hash, poly1305_ctx *, P1305_CTX)
1217
1218 static PyObject *poly1305hash_pynew(PyTypeObject *ty,
1219 PyObject *arg, PyObject *kw)
1220 {
1221 char *kwlist[] = { "mask", 0 };
1222 poly1305key_pyobj *pk = (poly1305key_pyobj *)ty;
1223 poly1305hash_pyobj *ph;
1224 char *m = 0;
1225 Py_ssize_t sz;
1226
1227 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|s#:new", kwlist, &m, &sz))
1228 return (0);
1229 if (m && sz != POLY1305_MASKSZ) VALERR("bad mask length");
1230 ph = PyObject_NEW(poly1305hash_pyobj, ty);
1231 ph->f = 0;
1232 if (m) ph->f |= f_mask;
1233 poly1305_macinit(&ph->ctx, &pk->k, m);
1234 Py_INCREF(ty);
1235 return ((PyObject *)ph);
1236 end:
1237 return (0);
1238 }
1239
1240 static PyObject *poly1305key_pynew(PyTypeObject *ty,
1241 PyObject *arg, PyObject *kw)
1242 {
1243 char *kwlist[] = { "k", 0 };
1244 poly1305key_pyobj *pk;
1245 char *k;
1246 Py_ssize_t sz;
1247
1248 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
1249 goto end;
1250 if (keysz(sz, poly1305_keysz) != sz) VALERR("bad key length");
1251
1252 pk = newtype(ty, 0, 0);
1253 pk->ty.ht_name = PyString_FromString("poly1305(keyed)");
1254 pk->ty.ht_type.tp_basicsize = sizeof(poly1305hash_pyobj);
1255 pk->ty.ht_type.tp_name = PyString_AS_STRING(pk->ty.ht_name);
1256 pk->ty.ht_type.tp_base = poly1305hash_pytype;
1257 Py_INCREF(poly1305key_pytype);
1258 pk->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
1259 Py_TPFLAGS_BASETYPE |
1260 Py_TPFLAGS_HEAPTYPE);
1261 pk->ty.ht_type.tp_alloc = PyType_GenericAlloc;
1262 pk->ty.ht_type.tp_free = 0;
1263 pk->ty.ht_type.tp_new = poly1305hash_pynew;
1264 typeready(&pk->ty.ht_type);
1265
1266 poly1305_keyinit(&pk->k, k, sz);
1267 return ((PyObject *)pk);
1268
1269 end:
1270 return (0);
1271 }
1272
1273 static PyObject *poly1305clsget_name(PyObject *me, void *hunoz)
1274 { return (PyString_FromString("poly1305")); }
1275
1276 static PyObject *poly1305clsget_keysz(PyObject *me, void *hunoz)
1277 { return (keysz_pywrap(poly1305_keysz)); }
1278
1279 static PyObject *poly1305clsget_masksz(PyObject *me, void *hunoz)
1280 { return (PyInt_FromLong(POLY1305_MASKSZ)); }
1281
1282 static PyObject *poly1305clsget_tagsz(PyObject *me, void *hunoz)
1283 { return (PyInt_FromLong(POLY1305_TAGSZ)); }
1284
1285 static PyObject *polymeth_copy(PyObject *me, PyObject *arg)
1286 {
1287 poly1305hash_pyobj *ph;
1288 if (!PyArg_ParseTuple(arg, ":copy")) return (0);
1289 ph = PyObject_NEW(poly1305hash_pyobj, me->ob_type);
1290 poly1305_copy(&ph->ctx, P1305_CTX(me));
1291 Py_INCREF(me->ob_type);
1292 return ((PyObject *)ph);
1293 }
1294
1295 static PyObject *polymeth_hash(PyObject *me, PyObject *arg)
1296 {
1297 char *p;
1298 Py_ssize_t sz;
1299 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
1300 poly1305_hash(P1305_CTX(me), p, sz);
1301 RETURN_ME;
1302 }
1303
1304 #define POLYMETH_HASHU_(n, W, w) \
1305 static PyObject *polymeth_hashu##w(PyObject *me, PyObject *arg) \
1306 { \
1307 uint##n x; \
1308 octet b[SZ_##W]; \
1309 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
1310 STORE##W(b, x); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
1311 RETURN_ME; \
1312 end: \
1313 return (0); \
1314 }
1315 DOUINTCONV(POLYMETH_HASHU_)
1316
1317 #define POLYMETH_HASHBUF_(n, W, w) \
1318 static PyObject *polymeth_hashbuf##w(PyObject *me, PyObject *arg) \
1319 { \
1320 char *p; \
1321 Py_ssize_t sz; \
1322 octet b[SZ_##W]; \
1323 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1324 if (sz > MASK##n) TYERR("string too long"); \
1325 STORE##W(b, sz); poly1305_hash(P1305_CTX(me), b, sizeof(b)); \
1326 poly1305_hash(P1305_CTX(me), p, sz); \
1327 RETURN_ME; \
1328 end: \
1329 return (0); \
1330 }
1331 DOUINTCONV(POLYMETH_HASHBUF_)
1332
1333 static PyObject *polymeth_hashstrz(PyObject *me, PyObject *arg)
1334 {
1335 char *p;
1336 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1337 poly1305_hash(P1305_CTX(me), p, strlen(p) + 1);
1338 RETURN_ME;
1339 }
1340
1341 static PyObject *polymeth_flush(PyObject *me, PyObject *arg)
1342 {
1343 if (!PyArg_ParseTuple(arg, ":flush")) return (0);
1344 poly1305_flush(P1305_CTX(me));
1345 RETURN_ME;
1346 }
1347
1348 static PyObject *polymeth_flushzero(PyObject *me, PyObject *arg)
1349 {
1350 if (!PyArg_ParseTuple(arg, ":flushzero")) return (0);
1351 poly1305_flushzero(P1305_CTX(me));
1352 RETURN_ME;
1353 }
1354
1355 static PyObject *polymeth_concat(PyObject *me, PyObject *arg)
1356 {
1357 PyObject *pre, *suff;
1358 if (!PyArg_ParseTuple(arg, "OO:concat", &pre, &suff)) return (0);
1359 if (!PyObject_TypeCheck(pre, poly1305hash_pytype) ||
1360 !PyObject_TypeCheck(suff, poly1305hash_pytype))
1361 TYERR("wanted a poly1305hash");
1362 if (me->ob_type != pre->ob_type || me->ob_type != suff->ob_type)
1363 TYERR("key mismatch");
1364 if (P1305_CTX(pre)->nbuf) VALERR("prefix is not block-aligned");
1365 poly1305_concat(P1305_CTX(me), P1305_CTX(pre), P1305_CTX(suff));
1366 RETURN_ME;
1367 end:
1368 return (0);
1369 }
1370
1371 static PyObject *polymeth_done(PyObject *me, PyObject *arg)
1372 {
1373 PyObject *rc;
1374 if (!PyArg_ParseTuple(arg, ":done")) return (0);
1375 if (!(P1305_F(me) & f_mask)) VALERR("no mask");
1376 rc = bytestring_pywrap(0, POLY1305_TAGSZ);
1377 poly1305_done(P1305_CTX(me), PyString_AS_STRING(rc));
1378 return (rc);
1379 end:
1380 return (0);
1381 }
1382
1383 static PyGetSetDef poly1305cls_pygetset[] = {
1384 #define GETSETNAME(op, name) poly1305cls##op##_##name
1385 GET (keysz, "PC.keysz -> acceptable key sizes")
1386 GET (masksz, "PC.masksz -> mask size")
1387 GET (tagsz, "PC.tagsz -> MAC output size")
1388 GET (name, "PC.name -> name of this kind of MAC")
1389 #undef GETSETNAME
1390 { 0 }
1391 };
1392
1393 static PyMethodDef poly1305hash_pymethods[] = {
1394 #define METHNAME(name) polymeth_##name
1395 METH (copy, "P.copy() -> PP")
1396 METH (hash, "P.hash(M)")
1397 #define METHU_(n, W, w) METH(hashu##w, "P.hashu" #w "(WORD)")
1398 DOUINTCONV(METHU_)
1399 #undef METHU_
1400 #define METHBUF_(n, W, w) METH(hashbuf##w, "P.hashbuf" #w "(BYTES)")
1401 DOUINTCONV(METHBUF_)
1402 #undef METHBUF_
1403 METH (hashstrz, "P.hashstrz(STRING)")
1404 METH (flush, "P.flush()")
1405 METH (flushzero, "P.flushzero()")
1406 METH (concat, "P.concat(PREFIX, SUFFIX)")
1407 METH (done, "P.done() -> TAG")
1408 #undef METHNAME
1409 { 0 }
1410 };
1411
1412 static PyTypeObject poly1305cls_pytype_skel = {
1413 PyObject_HEAD_INIT(0) 0, /* Header */
1414 "Poly1305Class", /* @tp_name@ */
1415 sizeof(PyHeapTypeObject), /* @tp_basicsize@ */
1416 0, /* @tp_itemsize@ */
1417
1418 0, /* @tp_dealloc@ */
1419 0, /* @tp_print@ */
1420 0, /* @tp_getattr@ */
1421 0, /* @tp_setattr@ */
1422 0, /* @tp_compare@ */
1423 0, /* @tp_repr@ */
1424 0, /* @tp_as_number@ */
1425 0, /* @tp_as_sequence@ */
1426 0, /* @tp_as_mapping@ */
1427 0, /* @tp_hash@ */
1428 0, /* @tp_call@ */
1429 0, /* @tp_str@ */
1430 0, /* @tp_getattro@ */
1431 0, /* @tp_setattro@ */
1432 0, /* @tp_as_buffer@ */
1433 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1434 Py_TPFLAGS_BASETYPE,
1435
1436 /* @tp_doc@ */
1437 "Poly1305 metametaclass. Best not to ask.",
1438
1439 0, /* @tp_traverse@ */
1440 0, /* @tp_clear@ */
1441 0, /* @tp_richcompare@ */
1442 0, /* @tp_weaklistoffset@ */
1443 0, /* @tp_iter@ */
1444 0, /* @tp_iternext@ */
1445 0, /* @tp_methods@ */
1446 0, /* @tp_members@ */
1447 poly1305cls_pygetset, /* @tp_getset@ */
1448 0, /* @tp_base@ */
1449 0, /* @tp_dict@ */
1450 0, /* @tp_descr_get@ */
1451 0, /* @tp_descr_set@ */
1452 0, /* @tp_dictoffset@ */
1453 0, /* @tp_init@ */
1454 PyType_GenericAlloc, /* @tp_alloc@ */
1455 abstract_pynew, /* @tp_new@ */
1456 0, /* @tp_free@ */
1457 0 /* @tp_is_gc@ */
1458 };
1459
1460 static PyTypeObject poly1305key_pytype_skel = {
1461 PyObject_HEAD_INIT(0) 0, /* Header */
1462 "poly1305", /* @tp_name@ */
1463 sizeof(poly1305key_pyobj), /* @tp_basicsize@ */
1464 0, /* @tp_itemsize@ */
1465
1466 0, /* @tp_dealloc@ */
1467 0, /* @tp_print@ */
1468 0, /* @tp_getattr@ */
1469 0, /* @tp_setattr@ */
1470 0, /* @tp_compare@ */
1471 0, /* @tp_repr@ */
1472 0, /* @tp_as_number@ */
1473 0, /* @tp_as_sequence@ */
1474 0, /* @tp_as_mapping@ */
1475 0, /* @tp_hash@ */
1476 0, /* @tp_call@ */
1477 0, /* @tp_str@ */
1478 0, /* @tp_getattro@ */
1479 0, /* @tp_setattro@ */
1480 0, /* @tp_as_buffer@ */
1481 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1482 Py_TPFLAGS_BASETYPE,
1483
1484 /* @tp_doc@ */
1485 "Poly1305 key.",
1486
1487 0, /* @tp_traverse@ */
1488 0, /* @tp_clear@ */
1489 0, /* @tp_richcompare@ */
1490 0, /* @tp_weaklistoffset@ */
1491 0, /* @tp_iter@ */
1492 0, /* @tp_iternext@ */
1493 0, /* @tp_methods@ */
1494 0, /* @tp_members@ */
1495 0, /* @tp_getset@ */
1496 0, /* @tp_base@ */
1497 0, /* @tp_dict@ */
1498 0, /* @tp_descr_get@ */
1499 0, /* @tp_descr_set@ */
1500 0, /* @tp_dictoffset@ */
1501 0, /* @tp_init@ */
1502 PyType_GenericAlloc, /* @tp_alloc@ */
1503 poly1305key_pynew, /* @tp_new@ */
1504 0, /* @tp_free@ */
1505 0 /* @tp_is_gc@ */
1506 };
1507
1508 static PyTypeObject poly1305hash_pytype_skel = {
1509 PyObject_HEAD_INIT(0) 0, /* Header */
1510 "Poly1305Hash", /* @tp_name@ */
1511 sizeof(poly1305hash_pyobj), /* @tp_basicsize@ */
1512 0, /* @tp_itemsize@ */
1513
1514 0, /* @tp_dealloc@ */
1515 0, /* @tp_print@ */
1516 0, /* @tp_getattr@ */
1517 0, /* @tp_setattr@ */
1518 0, /* @tp_compare@ */
1519 0, /* @tp_repr@ */
1520 0, /* @tp_as_number@ */
1521 0, /* @tp_as_sequence@ */
1522 0, /* @tp_as_mapping@ */
1523 0, /* @tp_hash@ */
1524 0, /* @tp_call@ */
1525 0, /* @tp_str@ */
1526 0, /* @tp_getattro@ */
1527 0, /* @tp_setattro@ */
1528 0, /* @tp_as_buffer@ */
1529 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1530 Py_TPFLAGS_BASETYPE,
1531
1532 /* @tp_doc@ */
1533 "Poly1305 MAC context base class.",
1534
1535 0, /* @tp_traverse@ */
1536 0, /* @tp_clear@ */
1537 0, /* @tp_richcompare@ */
1538 0, /* @tp_weaklistoffset@ */
1539 0, /* @tp_iter@ */
1540 0, /* @tp_iternext@ */
1541 poly1305hash_pymethods, /* @tp_methods@ */
1542 0, /* @tp_members@ */
1543 0, /* @tp_getset@ */
1544 0, /* @tp_base@ */
1545 0, /* @tp_dict@ */
1546 0, /* @tp_descr_get@ */
1547 0, /* @tp_descr_set@ */
1548 0, /* @tp_dictoffset@ */
1549 0, /* @tp_init@ */
1550 PyType_GenericAlloc, /* @tp_alloc@ */
1551 abstract_pynew, /* @tp_new@ */
1552 0, /* @tp_free@ */
1553 0 /* @tp_is_gc@ */
1554 };
1555
1556 /*----- Special snowflake for HSalsa and HChaCha --------------------------*/
1557
1558 #define DEF_HDANCE(DANCE, HDANCE, dance, hdance) \
1559 static PyObject *meth_##hdance##_prf(PyObject *me, PyObject *arg) \
1560 { \
1561 dance##_ctx dance; \
1562 char *k, *n; \
1563 Py_ssize_t ksz, nsz; \
1564 PyObject *rc; \
1565 if (!PyArg_ParseTuple(arg, "s#s#:" #hdance "_prf", \
1566 &k, &ksz, &n, &nsz)) \
1567 goto end; \
1568 if (ksz != DANCE##_KEYSZ) VALERR("bad key length"); \
1569 if (nsz != HDANCE##_INSZ) VALERR("bad input length"); \
1570 rc = bytestring_pywrap(0, HSALSA20_OUTSZ); \
1571 dance##_init(&dance, k, ksz, 0); \
1572 hdance##_prf(&dance, n, PyString_AS_STRING(rc)); \
1573 return (rc); \
1574 end: \
1575 return (0); \
1576 }
1577
1578 DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa20)
1579 DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa2012)
1580 DEF_HDANCE(SALSA20, HSALSA20, salsa20, hsalsa208)
1581
1582 DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha20)
1583 DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha12)
1584 DEF_HDANCE(CHACHA, HCHACHA, chacha, hchacha8)
1585
1586 /*----- Keccak-p[1600, n] -------------------------------------------------*/
1587
1588 static PyTypeObject *kxvik_pytype;
1589
1590 typedef struct kxvik_pyobj {
1591 PyObject_HEAD
1592 keccak1600_state s;
1593 unsigned n;
1594 } kxvik_pyobj;
1595
1596 static PyObject *kxvik_pynew(PyTypeObject *ty,
1597 PyObject *arg, PyObject *kw)
1598 {
1599 unsigned n = 24;
1600 kxvik_pyobj *rc = 0;
1601 char *kwlist[] = { "nround", 0 };
1602 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:new", kwlist,
1603 convuint, &n))
1604 goto end;
1605 rc = (kxvik_pyobj *)ty->tp_alloc(ty, 0);
1606 rc->n = n;
1607 keccak1600_init(&rc->s);
1608 end:
1609 return ((PyObject *)rc);
1610 }
1611
1612 static PyObject *kxvikmeth_mix(PyObject *me, PyObject *arg)
1613 {
1614 kxvik_pyobj *k = (kxvik_pyobj *)me;
1615 kludge64 t[25];
1616 const octet *q;
1617 octet buf[8];
1618 unsigned i;
1619 char *p; Py_ssize_t n;
1620
1621 if (!PyArg_ParseTuple(arg, "s#:mix", &p, &n)) goto end;
1622 if (n > 200) VALERR("out of range");
1623 q = (const octet *)p;
1624 i = 0;
1625 while (n > 8) { LOAD64_L_(t[i], q); i++; q += 8; n -= 8; }
1626 if (n) {
1627 memcpy(buf, q, n); memset(buf + n, 0, 8 - n);
1628 LOAD64_L_(t[i], buf); i++;
1629 }
1630 keccak1600_mix(&k->s, t, i);
1631 RETURN_ME;
1632 end:
1633 return (0);
1634 }
1635
1636 static PyObject *kxvikmeth_extract(PyObject *me, PyObject *arg)
1637 {
1638 kxvik_pyobj *k = (kxvik_pyobj *)me;
1639 PyObject *rc = 0;
1640 kludge64 t[25];
1641 octet *q, buf[8];
1642 unsigned i;
1643 unsigned n;
1644
1645 if (!PyArg_ParseTuple(arg, "O&:mix", convuint, &n)) goto end;
1646 if (n > 200) VALERR("out of range");
1647 rc = bytestring_pywrap(0, n);
1648 q = (octet *)PyString_AS_STRING(rc);
1649 keccak1600_extract(&k->s, t, (n + 7)/8);
1650 i = 0;
1651 while (n > 8) { STORE64_L_(q, t[i]); i++; q += 8; n -= 8; }
1652 if (n) { STORE64_L_(buf, t[i]); memcpy(q, buf, n); }
1653 end:
1654 return (rc);
1655 }
1656
1657 static PyObject *kxvikmeth_step(PyObject *me, PyObject *arg)
1658 {
1659 kxvik_pyobj *k = (kxvik_pyobj *)me;
1660 if (!PyArg_ParseTuple(arg, ":step")) return (0);
1661 keccak1600_p(&k->s, &k->s, k->n);
1662 RETURN_ME;
1663 }
1664
1665 static PyObject *kxvikget_nround(PyObject *me, void *hunoz)
1666 {
1667 kxvik_pyobj *k = (kxvik_pyobj *)me;
1668 return (PyInt_FromLong(k->n));
1669 }
1670
1671 static int kxvikset_nround(PyObject *me, PyObject *val, void *hunoz)
1672 {
1673 kxvik_pyobj *k = (kxvik_pyobj *)me;
1674 unsigned n;
1675
1676 if (!convuint(val, &n)) return (-1);
1677 k->n = n;
1678 return (0);
1679 }
1680
1681 static PyGetSetDef kxvik_pygetset[] = {
1682 #define GETSETNAME(op, name) kxvik##op##_##name
1683 GETSET(nround, "KECCAK.nround -> number of rounds")
1684 #undef GETSETNAME
1685 { 0 }
1686 };
1687
1688 static PyMethodDef kxvik_pymethods[] = {
1689 #define METHNAME(func) kxvikmeth_##func
1690 METH (mix, "KECCAK.mix(DATA)")
1691 METH (extract, "KECCAK.extract(NOCTETS)")
1692 METH (step, "KECCAK.step()")
1693 #undef METHNAME
1694 { 0 }
1695 };
1696
1697 static PyTypeObject kxvik_pytype_skel = {
1698 PyObject_HEAD_INIT(0) 0, /* Header */
1699 "Keccak1600", /* @tp_name@ */
1700 sizeof(kxvik_pyobj), /* @tp_basicsize@ */
1701 0, /* @tp_itemsize@ */
1702
1703 0, /* @tp_dealloc@ */
1704 0, /* @tp_print@ */
1705 0, /* @tp_getattr@ */
1706 0, /* @tp_setattr@ */
1707 0, /* @tp_compare@ */
1708 0, /* @tp_repr@ */
1709 0, /* @tp_as_number@ */
1710 0, /* @tp_as_sequence@ */
1711 0, /* @tp_as_mapping@ */
1712 0, /* @tp_hash@ */
1713 0, /* @tp_call@ */
1714 0, /* @tp_str@ */
1715 0, /* @tp_getattro@ */
1716 0, /* @tp_setattro@ */
1717 0, /* @tp_as_buffer@ */
1718 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1719 Py_TPFLAGS_BASETYPE,
1720
1721 /* @tp_doc@ */
1722 "Keccak-p[1600, n] state.",
1723
1724 0, /* @tp_traverse@ */
1725 0, /* @tp_clear@ */
1726 0, /* @tp_richcompare@ */
1727 0, /* @tp_weaklistoffset@ */
1728 0, /* @tp_iter@ */
1729 0, /* @tp_iternext@ */
1730 kxvik_pymethods, /* @tp_methods@ */
1731 0, /* @tp_members@ */
1732 kxvik_pygetset, /* @tp_getset@ */
1733 0, /* @tp_base@ */
1734 0, /* @tp_dict@ */
1735 0, /* @tp_descr_get@ */
1736 0, /* @tp_descr_set@ */
1737 0, /* @tp_dictoffset@ */
1738 0, /* @tp_init@ */
1739 PyType_GenericAlloc, /* @tp_alloc@ */
1740 kxvik_pynew, /* @tp_new@ */
1741 0, /* @tp_free@ */
1742 0 /* @tp_is_gc@ */
1743 };
1744
1745 static PyTypeObject *shake_pytype, *shake128_pytype, *shake256_pytype;
1746
1747 typedef struct shake_pyobj {
1748 PyObject_HEAD
1749 int st;
1750 shake_ctx h;
1751 } shake_pyobj;
1752
1753 #define SHAKE_H(o) (&((shake_pyobj *)(o))->h)
1754 #define SHAKE_ST(o) (((shake_pyobj *)(o))->st)
1755
1756 static PyObject *shake_dopynew(void (*initfn)(shake_ctx *,
1757 const void *, size_t,
1758 const void *, size_t),
1759 PyTypeObject *ty,
1760 PyObject *arg, PyObject *kw)
1761 {
1762 shake_pyobj *rc = 0;
1763 char *p = 0, *f = 0;
1764 Py_ssize_t psz = 0, fsz = 0;
1765 char *kwlist[] = { "perso", "func", 0 };
1766
1767 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|s#s#:new", kwlist,
1768 &p, &psz, &f, &fsz))
1769 goto end;
1770 rc = (shake_pyobj *)ty->tp_alloc(ty, 0);
1771 initfn(&rc->h, f, fsz, p, psz);
1772 rc->st = 0;
1773 end:
1774 return ((PyObject *)rc);
1775 }
1776
1777 static PyObject *shake128_pynew(PyTypeObject *ty,
1778 PyObject *arg, PyObject *kw)
1779 { return (shake_dopynew(cshake128_init, ty, arg, kw)); }
1780
1781 static PyObject *shake256_pynew(PyTypeObject *ty,
1782 PyObject *arg, PyObject *kw)
1783 { return (shake_dopynew(cshake256_init, ty, arg, kw)); }
1784
1785 static int shake_check(PyObject *me, int st)
1786 {
1787 if (SHAKE_ST(me) != st) VALERR("wrong state");
1788 return (0);
1789 end:
1790 return (-1);
1791 }
1792
1793 static PyObject *shakemeth_hash(PyObject *me, PyObject *arg)
1794 {
1795 char *p;
1796 Py_ssize_t sz;
1797 if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0);
1798 if (shake_check(me, 0)) return (0);
1799 shake_hash(SHAKE_H(me), p, sz);
1800 RETURN_ME;
1801 }
1802
1803 #define SHAKEMETH_HASHU_(n, W, w) \
1804 static PyObject *shakemeth_hashu##w(PyObject *me, PyObject *arg) \
1805 { \
1806 uint##n x; \
1807 octet b[SZ_##W]; \
1808 if (!PyArg_ParseTuple(arg, "O&:hashu" #w, convu##n, &x)) goto end; \
1809 if (shake_check(me, 0)) goto end; \
1810 STORE##W(b, x); shake_hash(SHAKE_H(me), b, sizeof(b)); \
1811 RETURN_ME; \
1812 end: \
1813 return (0); \
1814 }
1815 DOUINTCONV(SHAKEMETH_HASHU_)
1816
1817 #define SHAKEMETH_HASHBUF_(n, W, w) \
1818 static PyObject *shakemeth_hashbuf##w(PyObject *me, PyObject *arg) \
1819 { \
1820 char *p; \
1821 Py_ssize_t sz; \
1822 octet b[SZ_##W]; \
1823 if (!PyArg_ParseTuple(arg, "s#:hashbuf" #w, &p, &sz)) goto end; \
1824 if (sz > MASK##n) TYERR("string too long"); \
1825 if (shake_check(me, 0)) goto end; \
1826 STORE##W(b, sz); shake_hash(SHAKE_H(me), b, sizeof(b)); \
1827 shake_hash(SHAKE_H(me), p, sz); \
1828 RETURN_ME; \
1829 end: \
1830 return (0); \
1831 }
1832 DOUINTCONV(SHAKEMETH_HASHBUF_)
1833
1834 static PyObject *shakemeth_hashstrz(PyObject *me, PyObject *arg)
1835 {
1836 char *p;
1837 if (!PyArg_ParseTuple(arg, "s:hashstrz", &p)) return (0);
1838 if (shake_check(me, 0)) return (0);
1839 shake_hash(SHAKE_H(me), p, strlen(p) + 1);
1840 RETURN_ME;
1841 }
1842
1843 static PyObject *shakemeth_xof(PyObject *me, PyObject *arg)
1844 {
1845 if (!PyArg_ParseTuple(arg, ":xof")) goto end;
1846 if (shake_check(me, 0)) goto end;
1847 shake_xof(SHAKE_H(me));
1848 SHAKE_ST(me) = 1;
1849 RETURN_ME;
1850 end:
1851 return (0);
1852 }
1853
1854 static PyObject *shakemeth_done(PyObject *me, PyObject *arg)
1855 {
1856 PyObject *rc = 0;
1857 size_t n;
1858 if (!PyArg_ParseTuple(arg, "O&:done", convszt, &n)) goto end;
1859 if (shake_check(me, 0)) goto end;
1860 rc = bytestring_pywrap(0, n);
1861 shake_done(SHAKE_H(me), PyString_AS_STRING(rc), n);
1862 SHAKE_ST(me) = -1;
1863 end:
1864 return (rc);
1865 }
1866
1867 static PyObject *shakemeth_copy(PyObject *me, PyObject *arg)
1868 {
1869 shake_pyobj *rc = 0;
1870
1871 if (!PyArg_ParseTuple(arg, ":copy")) goto end;
1872 rc = PyObject_NEW(shake_pyobj, me->ob_type);
1873 rc->h = *SHAKE_H(me);
1874 rc->st = SHAKE_ST(me);
1875 end:
1876 return ((PyObject *)me);
1877 }
1878
1879 static PyObject *shakemeth_get(PyObject *me, PyObject *arg)
1880 {
1881 PyObject *rc = 0;
1882 size_t sz;
1883
1884 if (!PyArg_ParseTuple(arg, "O&:get", convszt, &sz)) goto end;
1885 if (shake_check(me, 1)) goto end;
1886 rc = bytestring_pywrap(0, sz);
1887 shake_get(SHAKE_H(me), PyString_AS_STRING(rc), sz);
1888 end:
1889 return (rc);
1890 }
1891
1892 static PyObject *shakemeth_mask(PyObject *me, PyObject *arg)
1893 {
1894 PyObject *rc = 0;
1895 char *p; Py_ssize_t sz;
1896
1897 if (!PyArg_ParseTuple(arg, "s#:mask", &p, &sz)) goto end;
1898 if (shake_check(me, 1)) goto end;
1899 rc = bytestring_pywrap(0, sz);
1900 shake_mask(SHAKE_H(me), p, PyString_AS_STRING(rc), sz);
1901 end:
1902 return (rc);
1903 }
1904
1905 static PyObject *shakeget_rate(PyObject *me, void *hunoz)
1906 { return (PyInt_FromLong(SHAKE_H(me)->h.r)); }
1907
1908 static PyObject *shakeget_buffered(PyObject *me, void *hunoz)
1909 { return (PyInt_FromLong(SHAKE_H(me)->h.n)); }
1910
1911 static PyObject *shakeget_state(PyObject *me, void *hunoz)
1912 {
1913 int st = SHAKE_ST(me);
1914 return (PyString_FromString(st == 0 ? "absorb" :
1915 st == 1 ? "squeeze" : "dead"));
1916 }
1917
1918 static PyGetSetDef shake_pygetset[] = {
1919 #define GETSETNAME(op, name) shake##op##_##name
1920 GET (rate, "S.rate -> rate, in bytes")
1921 GET (buffered, "S.buffered -> amount currently buffered")
1922 GET (state, "S.state -> `absorb', `squeeze', `dead'")
1923 #undef GETSETNAME
1924 { 0 }
1925 };
1926
1927 static PyMethodDef shake_pymethods[] = {
1928 #define METHNAME(func) shakemeth_##func
1929 METH (copy, "S.copy() -> SS")
1930 METH (hash, "S.hash(M)")
1931 #define METHU_(n, W, w) METH(hashu##w, "S.hashu" #w "(WORD)")
1932 DOUINTCONV(METHU_)
1933 #undef METHU_
1934 #define METHBUF_(n, W, w) METH(hashbuf##w, "S.hashbuf" #w "(BYTES)")
1935 DOUINTCONV(METHBUF_)
1936 #undef METHBUF_
1937 METH (hashstrz, "S.hashstrz(STRING)")
1938 METH (xof, "S.xof()")
1939 METH (done, "S.done(LEN) ->H")
1940 METH (get, "S.get(LEN) -> H")
1941 METH (mask, "S.mask(M) -> C")
1942 #undef METHNAME
1943 { 0 }
1944 };
1945
1946 static PyTypeObject shake_pytype_skel = {
1947 PyObject_HEAD_INIT(0) 0, /* Header */
1948 "Shake", /* @tp_name@ */
1949 sizeof(shake_pyobj), /* @tp_basicsize@ */
1950 0, /* @tp_itemsize@ */
1951
1952 0, /* @tp_dealloc@ */
1953 0, /* @tp_print@ */
1954 0, /* @tp_getattr@ */
1955 0, /* @tp_setattr@ */
1956 0, /* @tp_compare@ */
1957 0, /* @tp_repr@ */
1958 0, /* @tp_as_number@ */
1959 0, /* @tp_as_sequence@ */
1960 0, /* @tp_as_mapping@ */
1961 0, /* @tp_hash@ */
1962 0, /* @tp_call@ */
1963 0, /* @tp_str@ */
1964 0, /* @tp_getattro@ */
1965 0, /* @tp_setattro@ */
1966 0, /* @tp_as_buffer@ */
1967 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
1968 Py_TPFLAGS_BASETYPE,
1969
1970 /* @tp_doc@ */
1971 "SHAKE/cSHAKE base class.",
1972
1973 0, /* @tp_traverse@ */
1974 0, /* @tp_clear@ */
1975 0, /* @tp_richcompare@ */
1976 0, /* @tp_weaklistoffset@ */
1977 0, /* @tp_iter@ */
1978 0, /* @tp_iternext@ */
1979 shake_pymethods, /* @tp_methods@ */
1980 0, /* @tp_members@ */
1981 shake_pygetset, /* @tp_getset@ */
1982 0, /* @tp_base@ */
1983 0, /* @tp_dict@ */
1984 0, /* @tp_descr_get@ */
1985 0, /* @tp_descr_set@ */
1986 0, /* @tp_dictoffset@ */
1987 0, /* @tp_init@ */
1988 PyType_GenericAlloc, /* @tp_alloc@ */
1989 abstract_pynew, /* @tp_new@ */
1990 0, /* @tp_free@ */
1991 0 /* @tp_is_gc@ */
1992 };
1993
1994 static PyTypeObject shake128_pytype_skel = {
1995 PyObject_HEAD_INIT(0) 0, /* Header */
1996 "Shake128", /* @tp_name@ */
1997 0, /* @tp_basicsize@ */
1998 0, /* @tp_itemsize@ */
1999
2000 0, /* @tp_dealloc@ */
2001 0, /* @tp_print@ */
2002 0, /* @tp_getattr@ */
2003 0, /* @tp_setattr@ */
2004 0, /* @tp_compare@ */
2005 0, /* @tp_repr@ */
2006 0, /* @tp_as_number@ */
2007 0, /* @tp_as_sequence@ */
2008 0, /* @tp_as_mapping@ */
2009 0, /* @tp_hash@ */
2010 0, /* @tp_call@ */
2011 0, /* @tp_str@ */
2012 0, /* @tp_getattro@ */
2013 0, /* @tp_setattro@ */
2014 0, /* @tp_as_buffer@ */
2015 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2016 Py_TPFLAGS_BASETYPE,
2017
2018 /* @tp_doc@ */
2019 "SHAKE128/cSHAKE128 XOF.",
2020
2021 0, /* @tp_traverse@ */
2022 0, /* @tp_clear@ */
2023 0, /* @tp_richcompare@ */
2024 0, /* @tp_weaklistoffset@ */
2025 0, /* @tp_iter@ */
2026 0, /* @tp_iternext@ */
2027 0, /* @tp_methods@ */
2028 0, /* @tp_members@ */
2029 0, /* @tp_getset@ */
2030 0, /* @tp_base@ */
2031 0, /* @tp_dict@ */
2032 0, /* @tp_descr_get@ */
2033 0, /* @tp_descr_set@ */
2034 0, /* @tp_dictoffset@ */
2035 0, /* @tp_init@ */
2036 PyType_GenericAlloc, /* @tp_alloc@ */
2037 shake128_pynew, /* @tp_new@ */
2038 0, /* @tp_free@ */
2039 0 /* @tp_is_gc@ */
2040 };
2041
2042 static PyTypeObject shake256_pytype_skel = {
2043 PyObject_HEAD_INIT(0) 0, /* Header */
2044 "Shake256", /* @tp_name@ */
2045 0, /* @tp_basicsize@ */
2046 0, /* @tp_itemsize@ */
2047
2048 0, /* @tp_dealloc@ */
2049 0, /* @tp_print@ */
2050 0, /* @tp_getattr@ */
2051 0, /* @tp_setattr@ */
2052 0, /* @tp_compare@ */
2053 0, /* @tp_repr@ */
2054 0, /* @tp_as_number@ */
2055 0, /* @tp_as_sequence@ */
2056 0, /* @tp_as_mapping@ */
2057 0, /* @tp_hash@ */
2058 0, /* @tp_call@ */
2059 0, /* @tp_str@ */
2060 0, /* @tp_getattro@ */
2061 0, /* @tp_setattro@ */
2062 0, /* @tp_as_buffer@ */
2063 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2064 Py_TPFLAGS_BASETYPE,
2065
2066 /* @tp_doc@ */
2067 "SHAKE256/cSHAKE256 XOF.",
2068
2069 0, /* @tp_traverse@ */
2070 0, /* @tp_clear@ */
2071 0, /* @tp_richcompare@ */
2072 0, /* @tp_weaklistoffset@ */
2073 0, /* @tp_iter@ */
2074 0, /* @tp_iternext@ */
2075 0, /* @tp_methods@ */
2076 0, /* @tp_members@ */
2077 0, /* @tp_getset@ */
2078 0, /* @tp_base@ */
2079 0, /* @tp_dict@ */
2080 0, /* @tp_descr_get@ */
2081 0, /* @tp_descr_set@ */
2082 0, /* @tp_dictoffset@ */
2083 0, /* @tp_init@ */
2084 PyType_GenericAlloc, /* @tp_alloc@ */
2085 shake256_pynew, /* @tp_new@ */
2086 0, /* @tp_free@ */
2087 0 /* @tp_is_gc@ */
2088 };
2089
2090 /*----- Pseudorandom permutations -----------------------------------------*/
2091
2092 static PyTypeObject *gcprp_pytype, *gprp_pytype;
2093
2094 typedef struct prpinfo {
2095 const char *name;
2096 const octet *keysz;
2097 size_t ctxsz;
2098 size_t blksz;
2099 void (*init)(void *, const void *, size_t);
2100 void (*eblk)(void *, const void *, void *);
2101 void (*dblk)(void *, const void *, void *);
2102 } prpinfo;
2103
2104 #define PRP_DEF(PRE, pre) \
2105 static void pre##_prpinit(void *ctx, const void *k, size_t ksz) \
2106 { pre##_init(ctx, k, ksz); } \
2107 static void pre##_prpeblk(void *ctx, const void *in, void *out) \
2108 { \
2109 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
2110 pre##_eblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
2111 } \
2112 static void pre##_prpdblk(void *ctx, const void *in, void *out) \
2113 { \
2114 uint32 w[PRE##_BLKSZ/4]; BLKC_LOAD(PRE, w, in); \
2115 pre##_dblk(ctx, w, w); BLKC_STORE(PRE, out, w); \
2116 } \
2117 static const prpinfo pre##_prpinfo = { \
2118 #pre, pre##_keysz, sizeof(pre##_ctx), PRE##_BLKSZ, \
2119 pre##_prpinit, pre##_prpeblk, pre##_prpdblk \
2120 };
2121 PRPS(PRP_DEF)
2122
2123 static const struct prpinfo *const gprptab[] = {
2124 #define PRP_ENTRY(PRE, pre) &pre##_prpinfo,
2125 PRPS(PRP_ENTRY)
2126 0
2127 };
2128
2129 typedef struct gcprp_pyobj {
2130 PyHeapTypeObject ty;
2131 const prpinfo *prp;
2132 } gcprp_pyobj;
2133 #define GCPRP_PRP(o) (((gcprp_pyobj *)(o))->prp)
2134
2135 typedef struct gprp_pyobj {
2136 PyObject_HEAD
2137 const prpinfo *prp;
2138 } gprp_pyobj;
2139 #define GPRP_PRP(o) (((gprp_pyobj *)(o))->prp)
2140 #define GPRP_CTX(o) (((gprp_pyobj *)(o)) + 1)
2141
2142 typedef struct prp {
2143 const prpinfo *prp;
2144 void *ctx;
2145 } prp;
2146
2147 static PyObject *gprp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
2148 {
2149 char *kwlist[] = { "key", 0 };
2150 char *k;
2151 Py_ssize_t sz;
2152 const prpinfo *prp = GCPRP_PRP(ty);
2153 PyObject *me;
2154
2155 if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz))
2156 goto end;
2157 if (keysz(sz, prp->keysz) != sz) VALERR("bad key length");
2158 me = (PyObject *)ty->tp_alloc(ty, 0);
2159 GPRP_PRP(me) = prp;
2160 prp->init(GPRP_CTX(me), k, sz);
2161 Py_INCREF(me);
2162 return (me);
2163 end:
2164 return (0);
2165 }
2166
2167 static void gprp_pydealloc(PyObject *me)
2168 { Py_DECREF(me->ob_type); FREEOBJ(me); }
2169
2170 static PyObject *gcprp_pywrap(const prpinfo *prp)
2171 {
2172 gcprp_pyobj *g = newtype(gcprp_pytype, 0, prp->name);
2173 g->prp = prp;
2174 g->ty.ht_type.tp_basicsize = sizeof(gprp_pyobj) + prp->ctxsz;
2175 g->ty.ht_type.tp_base = gprp_pytype;
2176 Py_INCREF(gprp_pytype);
2177 g->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
2178 Py_TPFLAGS_BASETYPE |
2179 Py_TPFLAGS_HEAPTYPE);
2180 g->ty.ht_type.tp_alloc = PyType_GenericAlloc;
2181 g->ty.ht_type.tp_free = 0;
2182 g->ty.ht_type.tp_new = gprp_pynew;
2183 typeready(&g->ty.ht_type);
2184 return ((PyObject *)g);
2185 }
2186
2187 static PyObject *gcpget_name(PyObject *me, void *hunoz)
2188 { return (PyString_FromString(GCPRP_PRP(me)->name)); }
2189 static PyObject *gcpget_keysz(PyObject *me, void *hunoz)
2190 { return (keysz_pywrap(GCPRP_PRP(me)->keysz)); }
2191 static PyObject *gcpget_blksz(PyObject *me, void *hunoz)
2192 { return (PyInt_FromLong(GCPRP_PRP(me)->blksz)); }
2193
2194 static PyObject *gpmeth_encrypt(PyObject *me, PyObject *arg)
2195 {
2196 char *p;
2197 Py_ssize_t n;
2198 PyObject *rc = 0;
2199
2200 if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &n)) goto end;
2201 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
2202 rc = bytestring_pywrap(0, n);
2203 GPRP_PRP(me)->eblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
2204 end:
2205 return (rc);
2206 }
2207
2208 static PyObject *gpmeth_decrypt(PyObject *me, PyObject *arg)
2209 {
2210 char *p;
2211 Py_ssize_t n;
2212 PyObject *rc = 0;
2213
2214 if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &n)) goto end;
2215 if (n != GPRP_PRP(me)->blksz) VALERR("incorrect block length");
2216 rc = bytestring_pywrap(0, n);
2217 GPRP_PRP(me)->dblk(GPRP_CTX(me), p, PyString_AS_STRING(rc));
2218 end:
2219 return (rc);
2220 }
2221
2222 static PyGetSetDef gcprp_pygetset[] = {
2223 #define GETSETNAME(op, name) gcp##op##_##name
2224 GET (keysz, "CP.keysz -> acceptable key sizes")
2225 GET (blksz, "CP.blksz -> block size")
2226 GET (name, "CP.name -> name of this kind of PRP")
2227 #undef GETSETNAME
2228 { 0 }
2229 };
2230
2231 static PyMethodDef gprp_pymethods[] = {
2232 #define METHNAME(name) gpmeth_##name
2233 METH (encrypt, "P.encrypt(PT) -> CT")
2234 METH (decrypt, "P.decrypt(CT) -> PT")
2235 #undef METHNAME
2236 { 0 }
2237 };
2238
2239 static PyTypeObject gcprp_pytype_skel = {
2240 PyObject_HEAD_INIT(0) 0, /* Header */
2241 "GCPRP", /* @tp_name@ */
2242 sizeof(gcprp_pyobj), /* @tp_basicsize@ */
2243 0, /* @tp_itemsize@ */
2244
2245 0, /* @tp_dealloc@ */
2246 0, /* @tp_print@ */
2247 0, /* @tp_getattr@ */
2248 0, /* @tp_setattr@ */
2249 0, /* @tp_compare@ */
2250 0, /* @tp_repr@ */
2251 0, /* @tp_as_number@ */
2252 0, /* @tp_as_sequence@ */
2253 0, /* @tp_as_mapping@ */
2254 0, /* @tp_hash@ */
2255 0, /* @tp_call@ */
2256 0, /* @tp_str@ */
2257 0, /* @tp_getattro@ */
2258 0, /* @tp_setattro@ */
2259 0, /* @tp_as_buffer@ */
2260 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2261 Py_TPFLAGS_BASETYPE,
2262
2263 /* @tp_doc@ */
2264 "Pseudorandom permutation metaclass.",
2265
2266 0, /* @tp_traverse@ */
2267 0, /* @tp_clear@ */
2268 0, /* @tp_richcompare@ */
2269 0, /* @tp_weaklistoffset@ */
2270 0, /* @tp_iter@ */
2271 0, /* @tp_iternext@ */
2272 0, /* @tp_methods@ */
2273 0, /* @tp_members@ */
2274 gcprp_pygetset, /* @tp_getset@ */
2275 0, /* @tp_base@ */
2276 0, /* @tp_dict@ */
2277 0, /* @tp_descr_get@ */
2278 0, /* @tp_descr_set@ */
2279 0, /* @tp_dictoffset@ */
2280 0, /* @tp_init@ */
2281 PyType_GenericAlloc, /* @tp_alloc@ */
2282 abstract_pynew, /* @tp_new@ */
2283 0, /* @tp_free@ */
2284 0 /* @tp_is_gc@ */
2285 };
2286
2287 static PyTypeObject gprp_pytype_skel = {
2288 PyObject_HEAD_INIT(0) 0, /* Header */
2289 "GPRP", /* @tp_name@ */
2290 sizeof(gprp_pyobj), /* @tp_basicsize@ */
2291 0, /* @tp_itemsize@ */
2292
2293 gprp_pydealloc, /* @tp_dealloc@ */
2294 0, /* @tp_print@ */
2295 0, /* @tp_getattr@ */
2296 0, /* @tp_setattr@ */
2297 0, /* @tp_compare@ */
2298 0, /* @tp_repr@ */
2299 0, /* @tp_as_number@ */
2300 0, /* @tp_as_sequence@ */
2301 0, /* @tp_as_mapping@ */
2302 0, /* @tp_hash@ */
2303 0, /* @tp_call@ */
2304 0, /* @tp_str@ */
2305 0, /* @tp_getattro@ */
2306 0, /* @tp_setattro@ */
2307 0, /* @tp_as_buffer@ */
2308 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
2309 Py_TPFLAGS_BASETYPE,
2310
2311 /* @tp_doc@ */
2312 "Pseudorandom permutation, abstract base class.",
2313
2314 0, /* @tp_traverse@ */
2315 0, /* @tp_clear@ */
2316 0, /* @tp_richcompare@ */
2317 0, /* @tp_weaklistoffset@ */
2318 0, /* @tp_iter@ */
2319 0, /* @tp_iternext@ */
2320 gprp_pymethods, /* @tp_methods@ */
2321 0, /* @tp_members@ */
2322 0, /* @tp_getset@ */
2323 0, /* @tp_base@ */
2324 0, /* @tp_dict@ */
2325 0, /* @tp_descr_get@ */
2326 0, /* @tp_descr_set@ */
2327 0, /* @tp_dictoffset@ */
2328 0, /* @tp_init@ */
2329 PyType_GenericAlloc, /* @tp_alloc@ */
2330 abstract_pynew, /* @tp_new@ */
2331 0, /* @tp_free@ */
2332 0 /* @tp_is_gc@ */
2333 };
2334
2335 /*----- Main code ---------------------------------------------------------*/
2336
2337 static PyMethodDef methods[] = {
2338 #define METHNAME(func) meth_##func
2339 METH (_KeySZ_fromdl, "\
2340 fromdl(N) -> M: convert integer discrete log field size to work factor")
2341 METH (_KeySZ_fromschnorr, "\
2342 fromschnorr(N) -> M: convert Schnorr group order to work factor")
2343 METH (_KeySZ_fromif, "\
2344 fromif(N) -> M: convert integer factorization problem size to work factor")
2345 METH (_KeySZ_fromec, "\
2346 fromec(N) -> M: convert elliptic curve group order to work factor")
2347 METH (_KeySZ_todl, "\
2348 todl(N) -> M: convert work factor to integer discrete log field size")
2349 METH (_KeySZ_toschnorr, "\
2350 toschnorr(N) -> M: convert work factor to Schnorr group order")
2351 METH (_KeySZ_toif, "\
2352 toif(N) -> M: convert work factor to integer factorization problem size")
2353 METH (_KeySZ_toec, "\
2354 toec(N) -> M: convert work factor to elliptic curve group order")
2355 METH (_KeySZ_toec, "\
2356 toec(N) -> M: convert work factor to elliptic curve group order")
2357 #define METH_HDANCE(hdance, HDance) METH(hdance##_prf, "\
2358 " #hdance "_prf(K, N) -> H: calculate " HDance " hash of N with K")
2359 METH_HDANCE(hsalsa20, "HSalsa20")
2360 METH_HDANCE(hsalsa2012, "HSalsa20/12")
2361 METH_HDANCE(hsalsa208, "HSalsa20/8")
2362 METH_HDANCE(hchacha20, "HChaCha20")
2363 METH_HDANCE(hchacha12, "HChaCha12")
2364 METH_HDANCE(hchacha8, "HChaCha8")
2365 #undef METH_DANCE
2366 #undef METHNAME
2367 { 0 }
2368 };
2369
2370 void algorithms_pyinit(void)
2371 {
2372 INITTYPE(keysz, root);
2373 INITTYPE(keyszany, keysz);
2374 INITTYPE(keyszrange, keysz);
2375 INITTYPE(keyszset, keysz);
2376 INITTYPE(gccipher, type);
2377 INITTYPE(gcipher, root);
2378 INITTYPE(gchash, type);
2379 INITTYPE(ghash, root);
2380 INITTYPE(gcmac, type);
2381 INITTYPE(gmac, type);
2382 INITTYPE(gmhash, ghash);
2383 INITTYPE(poly1305cls, type);
2384 INITTYPE_META(poly1305key, type, poly1305cls);
2385 INITTYPE(poly1305hash, root);
2386 INITTYPE(kxvik, root);
2387 INITTYPE(shake, root);
2388 INITTYPE(shake128, shake);
2389 INITTYPE(shake256, shake);
2390 INITTYPE(gcprp, type);
2391 INITTYPE(gprp, root);
2392 addmethods(methods);
2393 }
2394
2395 GEN(gcciphers, cipher)
2396 GEN(gchashes, hash)
2397 GEN(gcmacs, mac)
2398 #define gcprp prpinfo
2399 GEN(gcprps, prp)
2400
2401 void algorithms_pyinsert(PyObject *mod)
2402 {
2403 PyObject *d;
2404 INSERT("KeySZ", keysz_pytype);
2405 INSERT("KeySZAny", keyszany_pytype);
2406 INSERT("KeySZRange", keyszrange_pytype);
2407 INSERT("KeySZSet", keyszset_pytype);
2408 INSERT("GCCipher", gccipher_pytype);
2409 INSERT("GCipher", gcipher_pytype);
2410 INSERT("gcciphers", gcciphers());
2411 INSERT("GCHash", gchash_pytype);
2412 INSERT("GHash", ghash_pytype);
2413 INSERT("gchashes", d = gchashes());
2414 sha_pyobj = PyDict_GetItemString(d, "sha"); Py_INCREF(sha_pyobj);
2415 has160_pyobj = PyDict_GetItemString(d, "has160"); Py_INCREF(has160_pyobj);
2416 INSERT("GCMAC", gcmac_pytype);
2417 INSERT("GMAC", gmac_pytype);
2418 INSERT("GMACHash", gmhash_pytype);
2419 INSERT("gcmacs", gcmacs());
2420 INSERT("Poly1305Class", poly1305cls_pytype);
2421 INSERT("poly1305", poly1305key_pytype);
2422 INSERT("Poly1305Hash", poly1305hash_pytype);
2423 INSERT("Keccak1600", kxvik_pytype);
2424 INSERT("Shake", shake_pytype);
2425 INSERT("Shake128", shake128_pytype);
2426 INSERT("Shake256", shake256_pytype);
2427 INSERT("GCPRP", gcprp_pytype);
2428 INSERT("GPRP", gprp_pytype);
2429 INSERT("gcprps", gcprps());
2430 }
2431
2432 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library -- Python bindings