| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id$ |
| 4 | * |
| 5 | * Symmetric cryptography |
| 6 | * |
| 7 | * (c) 2004 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of the Python interface to Catacomb. |
| 13 | * |
| 14 | * Catacomb/Python is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * Catacomb/Python is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with Catacomb/Python; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Header files ------------------------------------------------------*/ |
| 30 | |
| 31 | #include "catacomb-python.h" |
| 32 | #include "algorithms.h" |
| 33 | |
| 34 | /*----- Key sizes ---------------------------------------------------------*/ |
| 35 | |
| 36 | PyTypeObject *keysz_pytype; |
| 37 | PyTypeObject *keyszany_pytype, *keyszrange_pytype, *keyszset_pytype; |
| 38 | PyObject *sha_pyobj, *has160_pyobj; |
| 39 | |
| 40 | PyObject *keysz_pywrap(const octet *k) |
| 41 | { |
| 42 | switch (k[0]) { |
| 43 | case KSZ_ANY: { |
| 44 | keysz_pyobj *o = PyObject_New(keysz_pyobj, keyszany_pytype); |
| 45 | o->dfl = k[1]; |
| 46 | return ((PyObject *)o); |
| 47 | } break; |
| 48 | case KSZ_RANGE: { |
| 49 | keyszrange_pyobj *o = |
| 50 | PyObject_New(keyszrange_pyobj, keyszrange_pytype); |
| 51 | o->dfl = k[1]; |
| 52 | o->min = k[2]; |
| 53 | o->max = k[3]; |
| 54 | o->mod = k[4]; |
| 55 | if (!o->mod) o->mod = 1; |
| 56 | return ((PyObject *)o); |
| 57 | } break; |
| 58 | case KSZ_SET: { |
| 59 | keyszset_pyobj *o = |
| 60 | PyObject_New(keyszset_pyobj, keyszset_pytype); |
| 61 | int i, n; |
| 62 | o->dfl = k[1]; |
| 63 | for (i = 0; k[i + 1]; i++) ; |
| 64 | n = i; o->set = PyTuple_New(n); |
| 65 | for (i = 0; i < n; i++) |
| 66 | PyTuple_SET_ITEM(o->set, i, PyInt_FromLong(k[i + 1])); |
| 67 | return ((PyObject *)o); |
| 68 | } break; |
| 69 | default: |
| 70 | abort(); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | static PyObject *keyszany_pynew(PyTypeObject *ty, |
| 75 | PyObject *arg, PyObject *kw) |
| 76 | { |
| 77 | char *kwlist[] = { "default", 0 }; |
| 78 | int dfl; |
| 79 | keysz_pyobj *o; |
| 80 | |
| 81 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "i:new", kwlist, &dfl)) |
| 82 | goto end; |
| 83 | if (dfl < 0) VALERR("key size cannot be negative"); |
| 84 | o = (keysz_pyobj *)ty->tp_alloc(ty, 0); |
| 85 | o->dfl = dfl; |
| 86 | return ((PyObject *)o); |
| 87 | end: |
| 88 | return (0); |
| 89 | } |
| 90 | |
| 91 | static PyObject *keyszrange_pynew(PyTypeObject *ty, |
| 92 | PyObject *arg, PyObject *kw) |
| 93 | { |
| 94 | char *kwlist[] = { "default", "min", "max", "mod", 0 }; |
| 95 | int dfl, min = 0, max = 0, mod = 1; |
| 96 | keyszrange_pyobj *o; |
| 97 | |
| 98 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|iii:new", kwlist, |
| 99 | &dfl, &min, &max, &mod)) |
| 100 | goto end; |
| 101 | if (dfl < 0 || min < 0 || max < 0) |
| 102 | VALERR("key size cannot be negative"); |
| 103 | if (min > dfl || (max && dfl > max)) |
| 104 | VALERR("bad key size bounds"); |
| 105 | if (mod <= 0 || dfl % mod || min % mod || max % mod) |
| 106 | VALERR("bad key size modulus"); |
| 107 | o = (keyszrange_pyobj *)ty->tp_alloc(ty, 0); |
| 108 | o->dfl = dfl; |
| 109 | o->min = min; |
| 110 | o->max = max; |
| 111 | o->mod = mod; |
| 112 | return ((PyObject *)o); |
| 113 | end: |
| 114 | return (0); |
| 115 | } |
| 116 | |
| 117 | static PyObject *keyszset_pynew(PyTypeObject *ty, |
| 118 | PyObject *arg, PyObject *kw) |
| 119 | { |
| 120 | char *kwlist[] = { "default", "set", 0 }; |
| 121 | int dfl, i, n, xx; |
| 122 | PyObject *set = 0; |
| 123 | PyObject *x = 0, *l = 0; |
| 124 | keyszset_pyobj *o = 0; |
| 125 | |
| 126 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "i|O:new", kwlist, |
| 127 | &dfl, &set)) |
| 128 | goto end; |
| 129 | if (!set) set = PyTuple_New(0); |
| 130 | else Py_INCREF(set); |
| 131 | if (!PySequence_Check(set)) TYERR("want a sequence"); |
| 132 | n = PySequence_Size(set); |
| 133 | l = PyList_New(0); |
| 134 | if (PyErr_Occurred()) goto end; |
| 135 | if (dfl < 0) VALERR("key size cannot be negative"); |
| 136 | x = PyInt_FromLong(dfl); |
| 137 | PyList_Append(l, x); |
| 138 | Py_DECREF(x); |
| 139 | x = 0; |
| 140 | for (i = 0; i < n; i++) { |
| 141 | if ((x = PySequence_GetItem(set, i)) == 0) goto end; |
| 142 | xx = PyInt_AsLong(x); |
| 143 | if (PyErr_Occurred()) goto end; |
| 144 | if (xx == dfl) continue; |
| 145 | if (xx < 0) VALERR("key size cannot be negative"); |
| 146 | PyList_Append(l, x); |
| 147 | Py_DECREF(x); |
| 148 | x = 0; |
| 149 | } |
| 150 | Py_DECREF(set); |
| 151 | if ((set = PySequence_Tuple(l)) == 0) goto end; |
| 152 | o = (keyszset_pyobj *)ty->tp_alloc(ty, 0); |
| 153 | o->dfl = dfl; |
| 154 | o->set = set; |
| 155 | Py_INCREF(set); |
| 156 | end: |
| 157 | Py_XDECREF(set); |
| 158 | Py_XDECREF(l); |
| 159 | Py_XDECREF(x); |
| 160 | return ((PyObject *)o); |
| 161 | } |
| 162 | |
| 163 | static PyObject *kaget_min(PyObject *me, void *hunoz) |
| 164 | { return (PyInt_FromLong(0)); } |
| 165 | #define kaget_max kaget_min |
| 166 | |
| 167 | static PyObject *ksget_min(PyObject *me, void *hunoz) |
| 168 | { |
| 169 | PyObject *set = ((keyszset_pyobj *)me)->set; |
| 170 | int i, n, y, x = -1; |
| 171 | n = PyTuple_Size(set); |
| 172 | for (i = 0; i < n; i++) { |
| 173 | y = PyInt_AsLong(PyTuple_GetItem(set, i)); |
| 174 | if (x == -1 || y < x) x = y; |
| 175 | } |
| 176 | return (PyInt_FromLong(x)); |
| 177 | } |
| 178 | |
| 179 | static PyObject *ksget_max(PyObject *me, void *hunoz) |
| 180 | { |
| 181 | PyObject *set = ((keyszset_pyobj *)me)->set; |
| 182 | int i, n, y, x = -1; |
| 183 | n = PyTuple_Size(set); |
| 184 | for (i = 0; i < n; i++) { |
| 185 | y = PyInt_AsLong(PyTuple_GetItem(set, i)); |
| 186 | if (y > x) x = y; |
| 187 | } |
| 188 | return (PyInt_FromLong(x)); |
| 189 | } |
| 190 | |
| 191 | static PyMemberDef keysz_pymembers[] = { |
| 192 | #define MEMBERSTRUCT keysz_pyobj |
| 193 | #define default dfl /* ugh! */ |
| 194 | MEMBER(default, T_INT, READONLY, "KSZ.default -> default key size") |
| 195 | #undef default |
| 196 | #undef MEMBERSTRUCT |
| 197 | { 0 } |
| 198 | }; |
| 199 | |
| 200 | static PyGetSetDef keyszany_pygetset[] = { |
| 201 | #define GETSETNAME(op, name) ka##op##_##name |
| 202 | GET (min, "KSZ.min -> smallest allowed key size") |
| 203 | GET (max, "KSZ.min -> largest allowed key size") |
| 204 | #undef GETSETNAME |
| 205 | { 0 } |
| 206 | }; |
| 207 | |
| 208 | static PyMemberDef keyszrange_pymembers[] = { |
| 209 | #define MEMBERSTRUCT keyszrange_pyobj |
| 210 | MEMBER(min, T_INT, READONLY, "KSZ.min -> smallest allowed key size") |
| 211 | MEMBER(max, T_INT, READONLY, "KSZ.min -> largest allowed key size") |
| 212 | MEMBER(mod, T_INT, READONLY, |
| 213 | "KSZ.mod -> key size must be a multiple of this") |
| 214 | #undef MEMBERSTRUCT |
| 215 | { 0 } |
| 216 | }; |
| 217 | |
| 218 | static PyGetSetDef keyszset_pygetset[] = { |
| 219 | #define GETSETNAME(op, name) ks##op##_##name |
| 220 | GET (min, "KSZ.min -> smallest allowed key size") |
| 221 | GET (max, "KSZ.min -> largest allowed key size") |
| 222 | #undef GETSETNAME |
| 223 | { 0 } |
| 224 | }; |
| 225 | |
| 226 | static PyMemberDef keyszset_pymembers[] = { |
| 227 | #define MEMBERSTRUCT keyszset_pyobj |
| 228 | MEMBER(set, T_OBJECT, READONLY, "KSZ.set -> allowed key sizes") |
| 229 | #undef MEMBERSTRUCT |
| 230 | { 0 } |
| 231 | }; |
| 232 | |
| 233 | static PyTypeObject keysz_pytype_skel = { |
| 234 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 235 | "catacomb.KeySZ", /* @tp_name@ */ |
| 236 | sizeof(keysz_pyobj), /* @tp_basicsize@ */ |
| 237 | 0, /* @tp_itemsize@ */ |
| 238 | |
| 239 | 0, /* @tp_dealloc@ */ |
| 240 | 0, /* @tp_print@ */ |
| 241 | 0, /* @tp_getattr@ */ |
| 242 | 0, /* @tp_setattr@ */ |
| 243 | 0, /* @tp_compare@ */ |
| 244 | 0, /* @tp_repr@ */ |
| 245 | 0, /* @tp_as_number@ */ |
| 246 | 0, /* @tp_as_sequence@ */ |
| 247 | 0, /* @tp_as_mapping@ */ |
| 248 | 0, /* @tp_hash@ */ |
| 249 | 0, /* @tp_call@ */ |
| 250 | 0, /* @tp_str@ */ |
| 251 | 0, /* @tp_getattro@ */ |
| 252 | 0, /* @tp_setattro@ */ |
| 253 | 0, /* @tp_as_buffer@ */ |
| 254 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 255 | Py_TPFLAGS_BASETYPE, |
| 256 | |
| 257 | /* @tp_doc@ */ |
| 258 | "Key size constraints.", |
| 259 | |
| 260 | 0, /* @tp_traverse@ */ |
| 261 | 0, /* @tp_clear@ */ |
| 262 | 0, /* @tp_richcompare@ */ |
| 263 | 0, /* @tp_weaklistoffset@ */ |
| 264 | 0, /* @tp_iter@ */ |
| 265 | 0, /* @tp_iternexr@ */ |
| 266 | 0, /* @tp_methods@ */ |
| 267 | keysz_pymembers, /* @tp_members@ */ |
| 268 | 0, /* @tp_getset@ */ |
| 269 | 0, /* @tp_base@ */ |
| 270 | 0, /* @tp_dict@ */ |
| 271 | 0, /* @tp_descr_get@ */ |
| 272 | 0, /* @tp_descr_set@ */ |
| 273 | 0, /* @tp_dictoffset@ */ |
| 274 | 0, /* @tp_init@ */ |
| 275 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 276 | abstract_pynew, /* @tp_new@ */ |
| 277 | 0, /* @tp_free@ */ |
| 278 | 0 /* @tp_is_gc@ */ |
| 279 | }; |
| 280 | |
| 281 | static PyTypeObject keyszany_pytype_skel = { |
| 282 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 283 | "catacomb.KeySZAny", /* @tp_name@ */ |
| 284 | sizeof(keysz_pyobj), /* @tp_basicsize@ */ |
| 285 | 0, /* @tp_itemsize@ */ |
| 286 | |
| 287 | 0, /* @tp_dealloc@ */ |
| 288 | 0, /* @tp_print@ */ |
| 289 | 0, /* @tp_getattr@ */ |
| 290 | 0, /* @tp_setattr@ */ |
| 291 | 0, /* @tp_compare@ */ |
| 292 | 0, /* @tp_repr@ */ |
| 293 | 0, /* @tp_as_number@ */ |
| 294 | 0, /* @tp_as_sequence@ */ |
| 295 | 0, /* @tp_as_mapping@ */ |
| 296 | 0, /* @tp_hash@ */ |
| 297 | 0, /* @tp_call@ */ |
| 298 | 0, /* @tp_str@ */ |
| 299 | 0, /* @tp_getattro@ */ |
| 300 | 0, /* @tp_setattro@ */ |
| 301 | 0, /* @tp_as_buffer@ */ |
| 302 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 303 | Py_TPFLAGS_BASETYPE, |
| 304 | |
| 305 | /* @tp_doc@ */ |
| 306 | "Key size constraints. This object imposes no constraints on size.", |
| 307 | |
| 308 | 0, /* @tp_traverse@ */ |
| 309 | 0, /* @tp_clear@ */ |
| 310 | 0, /* @tp_richcompare@ */ |
| 311 | 0, /* @tp_weaklistoffset@ */ |
| 312 | 0, /* @tp_iter@ */ |
| 313 | 0, /* @tp_iternexr@ */ |
| 314 | 0, /* @tp_methods@ */ |
| 315 | 0, /* @tp_members@ */ |
| 316 | keyszany_pygetset, /* @tp_getset@ */ |
| 317 | 0, /* @tp_base@ */ |
| 318 | 0, /* @tp_dict@ */ |
| 319 | 0, /* @tp_descr_get@ */ |
| 320 | 0, /* @tp_descr_set@ */ |
| 321 | 0, /* @tp_dictoffset@ */ |
| 322 | 0, /* @tp_init@ */ |
| 323 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 324 | keyszany_pynew, /* @tp_new@ */ |
| 325 | 0, /* @tp_free@ */ |
| 326 | 0 /* @tp_is_gc@ */ |
| 327 | }; |
| 328 | |
| 329 | static PyTypeObject keyszrange_pytype_skel = { |
| 330 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 331 | "catacomb.KeySZRange", /* @tp_name@ */ |
| 332 | sizeof(keyszrange_pyobj), /* @tp_basicsize@ */ |
| 333 | 0, /* @tp_itemsize@ */ |
| 334 | |
| 335 | 0, /* @tp_dealloc@ */ |
| 336 | 0, /* @tp_print@ */ |
| 337 | 0, /* @tp_getattr@ */ |
| 338 | 0, /* @tp_setattr@ */ |
| 339 | 0, /* @tp_compare@ */ |
| 340 | 0, /* @tp_repr@ */ |
| 341 | 0, /* @tp_as_number@ */ |
| 342 | 0, /* @tp_as_sequence@ */ |
| 343 | 0, /* @tp_as_mapping@ */ |
| 344 | 0, /* @tp_hash@ */ |
| 345 | 0, /* @tp_call@ */ |
| 346 | 0, /* @tp_str@ */ |
| 347 | 0, /* @tp_getattro@ */ |
| 348 | 0, /* @tp_setattro@ */ |
| 349 | 0, /* @tp_as_buffer@ */ |
| 350 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 351 | Py_TPFLAGS_BASETYPE, |
| 352 | |
| 353 | /* @tp_doc@ */ |
| 354 | "Key size constraints. This object asserts minimum and maximum (if\n\ |
| 355 | sizes, and requires the key length to be a multiple of some value.", |
| 356 | |
| 357 | 0, /* @tp_traverse@ */ |
| 358 | 0, /* @tp_clear@ */ |
| 359 | 0, /* @tp_richcompare@ */ |
| 360 | 0, /* @tp_weaklistoffset@ */ |
| 361 | 0, /* @tp_iter@ */ |
| 362 | 0, /* @tp_iternexr@ */ |
| 363 | 0, /* @tp_methods@ */ |
| 364 | keyszrange_pymembers, /* @tp_members@ */ |
| 365 | 0, /* @tp_getset@ */ |
| 366 | 0, /* @tp_base@ */ |
| 367 | 0, /* @tp_dict@ */ |
| 368 | 0, /* @tp_descr_get@ */ |
| 369 | 0, /* @tp_descr_set@ */ |
| 370 | 0, /* @tp_dictoffset@ */ |
| 371 | 0, /* @tp_init@ */ |
| 372 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 373 | keyszrange_pynew, /* @tp_new@ */ |
| 374 | 0, /* @tp_free@ */ |
| 375 | 0 /* @tp_is_gc@ */ |
| 376 | }; |
| 377 | |
| 378 | static PyTypeObject keyszset_pytype_skel = { |
| 379 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 380 | "catacomb.KeySZSet", /* @tp_name@ */ |
| 381 | sizeof(keyszset_pyobj), /* @tp_basicsize@ */ |
| 382 | 0, /* @tp_itemsize@ */ |
| 383 | |
| 384 | 0, /* @tp_dealloc@ */ |
| 385 | 0, /* @tp_print@ */ |
| 386 | 0, /* @tp_getattr@ */ |
| 387 | 0, /* @tp_setattr@ */ |
| 388 | 0, /* @tp_compare@ */ |
| 389 | 0, /* @tp_repr@ */ |
| 390 | 0, /* @tp_as_number@ */ |
| 391 | 0, /* @tp_as_sequence@ */ |
| 392 | 0, /* @tp_as_mapping@ */ |
| 393 | 0, /* @tp_hash@ */ |
| 394 | 0, /* @tp_call@ */ |
| 395 | 0, /* @tp_str@ */ |
| 396 | 0, /* @tp_getattro@ */ |
| 397 | 0, /* @tp_setattro@ */ |
| 398 | 0, /* @tp_as_buffer@ */ |
| 399 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 400 | Py_TPFLAGS_BASETYPE, |
| 401 | |
| 402 | /* @tp_doc@ */ |
| 403 | "Key size constraints. This object requires the key to be one of a\n\ |
| 404 | few listed sizes.", |
| 405 | |
| 406 | 0, /* @tp_traverse@ */ |
| 407 | 0, /* @tp_clear@ */ |
| 408 | 0, /* @tp_richcompare@ */ |
| 409 | 0, /* @tp_weaklistoffset@ */ |
| 410 | 0, /* @tp_iter@ */ |
| 411 | 0, /* @tp_iternexr@ */ |
| 412 | 0, /* @tp_methods@ */ |
| 413 | keyszset_pymembers, /* @tp_members@ */ |
| 414 | keyszset_pygetset, /* @tp_getset@ */ |
| 415 | 0, /* @tp_base@ */ |
| 416 | 0, /* @tp_dict@ */ |
| 417 | 0, /* @tp_descr_get@ */ |
| 418 | 0, /* @tp_descr_set@ */ |
| 419 | 0, /* @tp_dictoffset@ */ |
| 420 | 0, /* @tp_init@ */ |
| 421 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 422 | keyszset_pynew, /* @tp_new@ */ |
| 423 | 0, /* @tp_free@ */ |
| 424 | 0 /* @tp_is_gc@ */ |
| 425 | }; |
| 426 | |
| 427 | /*----- Symmetric encryption ----------------------------------------------*/ |
| 428 | |
| 429 | PyTypeObject *gccipher_pytype, *gcipher_pytype; |
| 430 | |
| 431 | CONVFUNC(gccipher, gccipher *, GCCIPHER_CC) |
| 432 | CONVFUNC(gcipher, gcipher *, GCIPHER_C) |
| 433 | |
| 434 | PyObject *gcipher_pywrap(PyObject *cobj, gcipher *c, unsigned f) |
| 435 | { |
| 436 | gcipher_pyobj *g; |
| 437 | if (!cobj) cobj = gccipher_pywrap((/*unconst*/ gccipher *)GC_CLASS(c)); |
| 438 | else Py_INCREF(cobj); |
| 439 | g = PyObject_NEW(gcipher_pyobj, (PyTypeObject *)cobj); |
| 440 | g->c = c; |
| 441 | g->f = f; |
| 442 | return ((PyObject *)g); |
| 443 | } |
| 444 | |
| 445 | static PyObject *gcipher_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) |
| 446 | { |
| 447 | char *kwlist[] = { "k", 0 }; |
| 448 | char *k; |
| 449 | int sz; |
| 450 | |
| 451 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz)) |
| 452 | goto end; |
| 453 | if (keysz(sz, GCCIPHER_CC(ty)->keysz) != sz) VALERR("bad key length"); |
| 454 | return (gcipher_pywrap((PyObject *)ty, |
| 455 | GC_INIT(GCCIPHER_CC(ty), k, sz), |
| 456 | f_freeme)); |
| 457 | end: |
| 458 | return (0); |
| 459 | } |
| 460 | |
| 461 | PyObject *gccipher_pywrap(gccipher *cc) |
| 462 | { |
| 463 | gccipher_pyobj *g = newtype(gccipher_pytype, 0, cc->name); |
| 464 | g->cc = cc; |
| 465 | g->ty.type.tp_basicsize = sizeof(gcipher_pyobj); |
| 466 | g->ty.type.tp_base = gcipher_pytype; |
| 467 | Py_INCREF(gcipher_pytype); |
| 468 | g->ty.type.tp_flags = (Py_TPFLAGS_DEFAULT | |
| 469 | Py_TPFLAGS_BASETYPE | |
| 470 | Py_TPFLAGS_HEAPTYPE); |
| 471 | g->ty.type.tp_alloc = PyType_GenericAlloc; |
| 472 | g->ty.type.tp_free = 0; |
| 473 | g->ty.type.tp_new = gcipher_pynew; |
| 474 | PyType_Ready(&g->ty.type); |
| 475 | return ((PyObject *)g); |
| 476 | } |
| 477 | |
| 478 | static void gcipher_pydealloc(PyObject *me) |
| 479 | { |
| 480 | if (GCIPHER_F(me) & f_freeme) |
| 481 | GC_DESTROY(GCIPHER_C(me)); |
| 482 | Py_DECREF(me->ob_type); |
| 483 | FREEOBJ(me); |
| 484 | } |
| 485 | |
| 486 | static PyObject *gccget_name(PyObject *me, void *hunoz) |
| 487 | { return (PyString_FromString(GCCIPHER_CC(me)->name)); } |
| 488 | |
| 489 | static PyObject *gccget_keysz(PyObject *me, void *hunoz) |
| 490 | { return (keysz_pywrap(GCCIPHER_CC(me)->keysz)); } |
| 491 | |
| 492 | static PyObject *gccget_blksz(PyObject *me, void *hunoz) |
| 493 | { return (PyInt_FromLong(GCCIPHER_CC(me)->blksz)); } |
| 494 | |
| 495 | static PyObject *gcmeth_encrypt(PyObject *me, PyObject *arg) |
| 496 | { |
| 497 | char *p; |
| 498 | int sz; |
| 499 | PyObject *rc = 0; |
| 500 | |
| 501 | if (!PyArg_ParseTuple(arg, "s#:encrypt", &p, &sz)) return (0); |
| 502 | rc = bytestring_pywrap(0, sz); |
| 503 | GC_ENCRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz); |
| 504 | return (rc); |
| 505 | } |
| 506 | |
| 507 | static PyObject *gcmeth_enczero(PyObject *me, PyObject *arg) |
| 508 | { |
| 509 | char *p; |
| 510 | int sz; |
| 511 | PyObject *rc = 0; |
| 512 | |
| 513 | if (!PyArg_ParseTuple(arg, "i:enczero", &sz)) return (0); |
| 514 | rc = bytestring_pywrap(0, sz); |
| 515 | p = PyString_AS_STRING(rc); |
| 516 | memset(p, 0, sz); |
| 517 | GC_ENCRYPT(GCIPHER_C(me), p, p, sz); |
| 518 | return (rc); |
| 519 | } |
| 520 | |
| 521 | static PyObject *gcmeth_decrypt(PyObject *me, PyObject *arg) |
| 522 | { |
| 523 | char *p; |
| 524 | int sz; |
| 525 | PyObject *rc = 0; |
| 526 | |
| 527 | if (!PyArg_ParseTuple(arg, "s#:decrypt", &p, &sz)) return (0); |
| 528 | rc = bytestring_pywrap(0, sz); |
| 529 | GC_DECRYPT(GCIPHER_C(me), p, PyString_AS_STRING(rc), sz); |
| 530 | return (rc); |
| 531 | } |
| 532 | |
| 533 | static PyObject *gcmeth_deczero(PyObject *me, PyObject *arg) |
| 534 | { |
| 535 | char *p; |
| 536 | int sz; |
| 537 | PyObject *rc = 0; |
| 538 | |
| 539 | if (!PyArg_ParseTuple(arg, "i:deczero", &sz)) return (0); |
| 540 | rc = bytestring_pywrap(0, sz); |
| 541 | p = PyString_AS_STRING(rc); |
| 542 | memset(p, 0, sz); |
| 543 | GC_DECRYPT(GCIPHER_C(me), p, p, sz); |
| 544 | return (rc); |
| 545 | } |
| 546 | |
| 547 | static PyObject *gcmeth_setiv(PyObject *me, PyObject *arg) |
| 548 | { |
| 549 | char *p; |
| 550 | int sz; |
| 551 | |
| 552 | if (!PyArg_ParseTuple(arg, "s#:setiv", &p, &sz)) goto end; |
| 553 | if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode"); |
| 554 | if (sz != GC_CLASS(GCIPHER_C(me))->blksz) VALERR("bad IV length"); |
| 555 | GC_SETIV(GCIPHER_C(me), p); |
| 556 | RETURN_ME; |
| 557 | end: |
| 558 | return (0); |
| 559 | } |
| 560 | |
| 561 | static PyObject *gcmeth_bdry(PyObject *me, PyObject *arg) |
| 562 | { |
| 563 | if (!PyArg_ParseTuple(arg, ":bdry")) goto end; |
| 564 | if (!GC_CLASS(GCIPHER_C(me))->blksz) VALERR("not a block cipher mode"); |
| 565 | GC_BDRY(GCIPHER_C(me)); |
| 566 | RETURN_ME; |
| 567 | end: |
| 568 | return (0); |
| 569 | } |
| 570 | |
| 571 | static PyGetSetDef gccipher_pygetset[] = { |
| 572 | #define GETSETNAME(op, name) gcc##op##_##name |
| 573 | GET (keysz, "CC.keysz -> acceptable key sizes") |
| 574 | GET (blksz, "CC.blksz -> block size, or zero") |
| 575 | GET (name, "CC.name -> name of this kind of cipher") |
| 576 | #undef GETSETNAME |
| 577 | { 0 } |
| 578 | }; |
| 579 | |
| 580 | static PyMethodDef gcipher_pymethods[] = { |
| 581 | #define METHNAME(name) gcmeth_##name |
| 582 | METH (encrypt, "C.encrypt(PT) -> CT") |
| 583 | METH (enczero, "C.enczero(N) -> CT") |
| 584 | METH (decrypt, "C.decrypt(CT) -> PT") |
| 585 | METH (deczero, "C.deczero(N) -> PT") |
| 586 | METH (setiv, "C.setiv(IV)") |
| 587 | METH (bdry, "C.bdry()") |
| 588 | #undef METHNAME |
| 589 | { 0 } |
| 590 | }; |
| 591 | |
| 592 | static PyTypeObject gccipher_pytype_skel = { |
| 593 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 594 | "catacomb.GCCipher", /* @tp_name@ */ |
| 595 | sizeof(gccipher_pyobj), /* @tp_basicsize@ */ |
| 596 | 0, /* @tp_itemsize@ */ |
| 597 | |
| 598 | 0, /* @tp_dealloc@ */ |
| 599 | 0, /* @tp_print@ */ |
| 600 | 0, /* @tp_getattr@ */ |
| 601 | 0, /* @tp_setattr@ */ |
| 602 | 0, /* @tp_compare@ */ |
| 603 | 0, /* @tp_repr@ */ |
| 604 | 0, /* @tp_as_number@ */ |
| 605 | 0, /* @tp_as_sequence@ */ |
| 606 | 0, /* @tp_as_mapping@ */ |
| 607 | 0, /* @tp_hash@ */ |
| 608 | 0, /* @tp_call@ */ |
| 609 | 0, /* @tp_str@ */ |
| 610 | 0, /* @tp_getattro@ */ |
| 611 | 0, /* @tp_setattro@ */ |
| 612 | 0, /* @tp_as_buffer@ */ |
| 613 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 614 | Py_TPFLAGS_BASETYPE, |
| 615 | |
| 616 | /* @tp_doc@ */ |
| 617 | "Symmetric cipher metaclass.", |
| 618 | |
| 619 | 0, /* @tp_traverse@ */ |
| 620 | 0, /* @tp_clear@ */ |
| 621 | 0, /* @tp_richcompare@ */ |
| 622 | 0, /* @tp_weaklistoffset@ */ |
| 623 | 0, /* @tp_iter@ */ |
| 624 | 0, /* @tp_iternexr@ */ |
| 625 | 0, /* @tp_methods@ */ |
| 626 | 0, /* @tp_members@ */ |
| 627 | gccipher_pygetset, /* @tp_getset@ */ |
| 628 | 0, /* @tp_base@ */ |
| 629 | 0, /* @tp_dict@ */ |
| 630 | 0, /* @tp_descr_get@ */ |
| 631 | 0, /* @tp_descr_set@ */ |
| 632 | 0, /* @tp_dictoffset@ */ |
| 633 | 0, /* @tp_init@ */ |
| 634 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 635 | abstract_pynew, /* @tp_new@ */ |
| 636 | 0, /* @tp_free@ */ |
| 637 | 0 /* @tp_is_gc@ */ |
| 638 | }; |
| 639 | |
| 640 | static PyTypeObject gcipher_pytype_skel = { |
| 641 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 642 | "catacomb.GCipher", /* @tp_name@ */ |
| 643 | sizeof(gcipher_pyobj), /* @tp_basicsize@ */ |
| 644 | 0, /* @tp_itemsize@ */ |
| 645 | |
| 646 | gcipher_pydealloc, /* @tp_dealloc@ */ |
| 647 | 0, /* @tp_print@ */ |
| 648 | 0, /* @tp_getattr@ */ |
| 649 | 0, /* @tp_setattr@ */ |
| 650 | 0, /* @tp_compare@ */ |
| 651 | 0, /* @tp_repr@ */ |
| 652 | 0, /* @tp_as_number@ */ |
| 653 | 0, /* @tp_as_sequence@ */ |
| 654 | 0, /* @tp_as_mapping@ */ |
| 655 | 0, /* @tp_hash@ */ |
| 656 | 0, /* @tp_call@ */ |
| 657 | 0, /* @tp_str@ */ |
| 658 | 0, /* @tp_getattro@ */ |
| 659 | 0, /* @tp_setattro@ */ |
| 660 | 0, /* @tp_as_buffer@ */ |
| 661 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 662 | Py_TPFLAGS_BASETYPE, |
| 663 | |
| 664 | /* @tp_doc@ */ |
| 665 | "Symmetric cipher, abstract base class.", |
| 666 | |
| 667 | 0, /* @tp_traverse@ */ |
| 668 | 0, /* @tp_clear@ */ |
| 669 | 0, /* @tp_richcompare@ */ |
| 670 | 0, /* @tp_weaklistoffset@ */ |
| 671 | 0, /* @tp_iter@ */ |
| 672 | 0, /* @tp_iternexr@ */ |
| 673 | gcipher_pymethods, /* @tp_methods@ */ |
| 674 | 0, /* @tp_members@ */ |
| 675 | 0, /* @tp_getset@ */ |
| 676 | 0, /* @tp_base@ */ |
| 677 | 0, /* @tp_dict@ */ |
| 678 | 0, /* @tp_descr_get@ */ |
| 679 | 0, /* @tp_descr_set@ */ |
| 680 | 0, /* @tp_dictoffset@ */ |
| 681 | 0, /* @tp_init@ */ |
| 682 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 683 | abstract_pynew, /* @tp_new@ */ |
| 684 | 0, /* @tp_free@ */ |
| 685 | 0 /* @tp_is_gc@ */ |
| 686 | }; |
| 687 | |
| 688 | /*----- Hash functions ----------------------------------------------------*/ |
| 689 | |
| 690 | PyTypeObject *gchash_pytype, *ghash_pytype; |
| 691 | |
| 692 | CONVFUNC(gchash, gchash *, GCHASH_CH) |
| 693 | CONVFUNC(ghash, ghash *, GHASH_H) |
| 694 | |
| 695 | static PyObject *ghash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) |
| 696 | { |
| 697 | char *kwlist[] = { 0 }; |
| 698 | if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) |
| 699 | goto end; |
| 700 | return (ghash_pywrap((PyObject *)ty, GH_INIT(GCHASH_CH(ty)), f_freeme)); |
| 701 | end: |
| 702 | return (0); |
| 703 | } |
| 704 | |
| 705 | PyObject *gchash_pywrap(gchash *ch) |
| 706 | { |
| 707 | gchash_pyobj *g = newtype(gchash_pytype, 0, ch->name); |
| 708 | g->ch = ch; |
| 709 | g->ty.type.tp_basicsize = sizeof(ghash_pyobj); |
| 710 | g->ty.type.tp_base = ghash_pytype; |
| 711 | Py_INCREF(ghash_pytype); |
| 712 | g->ty.type.tp_flags = (Py_TPFLAGS_DEFAULT | |
| 713 | Py_TPFLAGS_BASETYPE | |
| 714 | Py_TPFLAGS_HEAPTYPE); |
| 715 | g->ty.type.tp_alloc = PyType_GenericAlloc; |
| 716 | g->ty.type.tp_free = 0; |
| 717 | g->ty.type.tp_new = ghash_pynew; |
| 718 | PyType_Ready(&g->ty.type); |
| 719 | return ((PyObject *)g); |
| 720 | } |
| 721 | |
| 722 | PyObject *ghash_pywrap(PyObject *cobj, ghash *h, unsigned f) |
| 723 | { |
| 724 | ghash_pyobj *g; |
| 725 | if (!cobj) cobj = gchash_pywrap((/*unconst*/ gchash *)GH_CLASS(h)); |
| 726 | else Py_INCREF(cobj); |
| 727 | g = PyObject_NEW(ghash_pyobj, (PyTypeObject *)cobj); |
| 728 | g->h = h; |
| 729 | g->f = f; |
| 730 | return ((PyObject *)g); |
| 731 | } |
| 732 | |
| 733 | static void ghash_pydealloc(PyObject *me) |
| 734 | { |
| 735 | if (GHASH_F(me) & f_freeme) |
| 736 | GH_DESTROY(GHASH_H(me)); |
| 737 | Py_DECREF(me->ob_type); |
| 738 | FREEOBJ(me); |
| 739 | } |
| 740 | |
| 741 | static PyObject *gchget_name(PyObject *me, void *hunoz) |
| 742 | { return (PyString_FromString(GCHASH_CH(me)->name)); } |
| 743 | |
| 744 | static PyObject *gchget_hashsz(PyObject *me, void *hunoz) |
| 745 | { return (PyInt_FromLong(GCHASH_CH(me)->hashsz)); } |
| 746 | |
| 747 | static PyObject *gchget_bufsz(PyObject *me, void *hunoz) |
| 748 | { return (PyInt_FromLong(GCHASH_CH(me)->bufsz)); } |
| 749 | |
| 750 | static PyObject *ghmeth_hash(PyObject *me, PyObject *arg) |
| 751 | { |
| 752 | char *p; |
| 753 | int sz; |
| 754 | if (!PyArg_ParseTuple(arg, "s#:hash", &p, &sz)) return (0); |
| 755 | GH_HASH(GHASH_H(me), p, sz); |
| 756 | RETURN_ME; |
| 757 | } |
| 758 | |
| 759 | static PyObject *ghmeth_done(PyObject *me, PyObject *arg) |
| 760 | { |
| 761 | ghash *g; |
| 762 | PyObject *rc; |
| 763 | if (!PyArg_ParseTuple(arg, ":done")) return (0); |
| 764 | g = GH_COPY(GHASH_H(me)); |
| 765 | rc = bytestring_pywrap(0, g->ops->c->hashsz); |
| 766 | GH_DONE(g, PyString_AS_STRING(rc)); |
| 767 | GH_DESTROY(g); |
| 768 | return (rc); |
| 769 | } |
| 770 | |
| 771 | static PyGetSetDef gchash_pygetset[] = { |
| 772 | #define GETSETNAME(op, name) gch##op##_##name |
| 773 | GET (bufsz, "CH.bufsz -> hash buffer size, or zero") |
| 774 | GET (hashsz, "CH.blksz -> hash output size") |
| 775 | GET (name, "CH.name -> name of this kind of hash") |
| 776 | #undef GETSETNAME |
| 777 | { 0 } |
| 778 | }; |
| 779 | |
| 780 | static PyMethodDef ghash_pymethods[] = { |
| 781 | #define METHNAME(name) ghmeth_##name |
| 782 | METH (hash, "H.hash(M)") |
| 783 | METH (done, "H.done() -> HASH") |
| 784 | #undef METHNAME |
| 785 | { 0 } |
| 786 | }; |
| 787 | |
| 788 | static PyTypeObject gchash_pytype_skel = { |
| 789 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 790 | "catacomb.GCHash", /* @tp_name@ */ |
| 791 | sizeof(gchash_pyobj), /* @tp_basicsize@ */ |
| 792 | 0, /* @tp_itemsize@ */ |
| 793 | |
| 794 | 0, /* @tp_dealloc@ */ |
| 795 | 0, /* @tp_print@ */ |
| 796 | 0, /* @tp_getattr@ */ |
| 797 | 0, /* @tp_setattr@ */ |
| 798 | 0, /* @tp_compare@ */ |
| 799 | 0, /* @tp_repr@ */ |
| 800 | 0, /* @tp_as_number@ */ |
| 801 | 0, /* @tp_as_sequence@ */ |
| 802 | 0, /* @tp_as_mapping@ */ |
| 803 | 0, /* @tp_hash@ */ |
| 804 | 0, /* @tp_call@ */ |
| 805 | 0, /* @tp_str@ */ |
| 806 | 0, /* @tp_getattro@ */ |
| 807 | 0, /* @tp_setattro@ */ |
| 808 | 0, /* @tp_as_buffer@ */ |
| 809 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 810 | Py_TPFLAGS_BASETYPE, |
| 811 | |
| 812 | /* @tp_doc@ */ |
| 813 | "Hash function metaclass.", |
| 814 | |
| 815 | 0, /* @tp_traverse@ */ |
| 816 | 0, /* @tp_clear@ */ |
| 817 | 0, /* @tp_richcompare@ */ |
| 818 | 0, /* @tp_weaklistoffset@ */ |
| 819 | 0, /* @tp_iter@ */ |
| 820 | 0, /* @tp_iternexr@ */ |
| 821 | 0, /* @tp_methods@ */ |
| 822 | 0, /* @tp_members@ */ |
| 823 | gchash_pygetset, /* @tp_getset@ */ |
| 824 | 0, /* @tp_base@ */ |
| 825 | 0, /* @tp_dict@ */ |
| 826 | 0, /* @tp_descr_get@ */ |
| 827 | 0, /* @tp_descr_set@ */ |
| 828 | 0, /* @tp_dictoffset@ */ |
| 829 | 0, /* @tp_init@ */ |
| 830 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 831 | abstract_pynew, /* @tp_new@ */ |
| 832 | 0, /* @tp_free@ */ |
| 833 | 0 /* @tp_is_gc@ */ |
| 834 | }; |
| 835 | |
| 836 | static PyTypeObject ghash_pytype_skel = { |
| 837 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 838 | "catacomb.GHash", /* @tp_name@ */ |
| 839 | sizeof(ghash_pyobj), /* @tp_basicsize@ */ |
| 840 | 0, /* @tp_itemsize@ */ |
| 841 | |
| 842 | ghash_pydealloc, /* @tp_dealloc@ */ |
| 843 | 0, /* @tp_print@ */ |
| 844 | 0, /* @tp_getattr@ */ |
| 845 | 0, /* @tp_setattr@ */ |
| 846 | 0, /* @tp_compare@ */ |
| 847 | 0, /* @tp_repr@ */ |
| 848 | 0, /* @tp_as_number@ */ |
| 849 | 0, /* @tp_as_sequence@ */ |
| 850 | 0, /* @tp_as_mapping@ */ |
| 851 | 0, /* @tp_hash@ */ |
| 852 | 0, /* @tp_call@ */ |
| 853 | 0, /* @tp_str@ */ |
| 854 | 0, /* @tp_getattro@ */ |
| 855 | 0, /* @tp_setattro@ */ |
| 856 | 0, /* @tp_as_buffer@ */ |
| 857 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 858 | Py_TPFLAGS_BASETYPE, |
| 859 | |
| 860 | /* @tp_doc@ */ |
| 861 | "Hash function, abstract base class.", |
| 862 | |
| 863 | 0, /* @tp_traverse@ */ |
| 864 | 0, /* @tp_clear@ */ |
| 865 | 0, /* @tp_richcompare@ */ |
| 866 | 0, /* @tp_weaklistoffset@ */ |
| 867 | 0, /* @tp_iter@ */ |
| 868 | 0, /* @tp_iternexr@ */ |
| 869 | ghash_pymethods, /* @tp_methods@ */ |
| 870 | 0, /* @tp_members@ */ |
| 871 | 0, /* @tp_getset@ */ |
| 872 | 0, /* @tp_base@ */ |
| 873 | 0, /* @tp_dict@ */ |
| 874 | 0, /* @tp_descr_get@ */ |
| 875 | 0, /* @tp_descr_set@ */ |
| 876 | 0, /* @tp_dictoffset@ */ |
| 877 | 0, /* @tp_init@ */ |
| 878 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 879 | abstract_pynew, /* @tp_new@ */ |
| 880 | 0, /* @tp_free@ */ |
| 881 | 0 /* @tp_is_gc@ */ |
| 882 | }; |
| 883 | |
| 884 | /*----- Message authentication --------------------------------------------*/ |
| 885 | |
| 886 | PyTypeObject *gcmac_pytype, *gmac_pytype, *gmhash_pytype; |
| 887 | |
| 888 | CONVFUNC(gcmac, gcmac *, GCMAC_CM) |
| 889 | CONVFUNC(gmac, gmac *, GMAC_M) |
| 890 | CONVFUNC(gmhash, ghash *, GHASH_H) |
| 891 | |
| 892 | static PyObject *gmac_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) |
| 893 | { |
| 894 | char *kwlist[] = { "k", 0 }; |
| 895 | char *k; |
| 896 | int sz; |
| 897 | |
| 898 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "s#:new", kwlist, &k, &sz)) |
| 899 | goto end; |
| 900 | if (keysz(sz, GCMAC_CM(ty)->keysz) != sz) VALERR("bad key length"); |
| 901 | return (gmac_pywrap((PyObject *)ty, |
| 902 | GM_KEY(GCMAC_CM(ty), k, sz), |
| 903 | f_freeme)); |
| 904 | end: |
| 905 | return (0); |
| 906 | } |
| 907 | |
| 908 | static PyObject *gmhash_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) |
| 909 | { |
| 910 | char *kwlist[] = { 0 }; |
| 911 | ghash_pyobj *g; |
| 912 | |
| 913 | if (!PyArg_ParseTupleAndKeywords(arg, kw, ":new", kwlist)) return (0); |
| 914 | g = PyObject_NEW(ghash_pyobj, ty); |
| 915 | g->h = GM_INIT(GMAC_M(ty)); |
| 916 | g->f = f_freeme; |
| 917 | Py_INCREF(ty); |
| 918 | return ((PyObject *)g); |
| 919 | } |
| 920 | |
| 921 | PyObject *gcmac_pywrap(gcmac *cm) |
| 922 | { |
| 923 | gcmac_pyobj *g = newtype(gcmac_pytype, 0, cm->name); |
| 924 | g->cm = cm; |
| 925 | g->ty.type.tp_basicsize = sizeof(gmac_pyobj); |
| 926 | g->ty.type.tp_base = gmac_pytype; |
| 927 | Py_INCREF(gmac_pytype); |
| 928 | g->ty.type.tp_flags = (Py_TPFLAGS_DEFAULT | |
| 929 | Py_TPFLAGS_BASETYPE | |
| 930 | Py_TPFLAGS_HEAPTYPE); |
| 931 | g->ty.type.tp_alloc = PyType_GenericAlloc; |
| 932 | g->ty.type.tp_free = 0; |
| 933 | g->ty.type.tp_new = gmac_pynew; |
| 934 | PyType_Ready(&g->ty.type); |
| 935 | return ((PyObject *)g); |
| 936 | } |
| 937 | |
| 938 | PyObject *gmac_pywrap(PyObject *cobj, gmac *m, unsigned f) |
| 939 | { |
| 940 | gmac_pyobj *g; |
| 941 | if (!cobj) cobj = gcmac_pywrap((/*unconst*/ gcmac *)GM_CLASS(m)); |
| 942 | else Py_INCREF(cobj); |
| 943 | g = newtype((PyTypeObject *)cobj, 0, 0); |
| 944 | g->ty.name = PyString_FromFormat("%s(keyed)", m->ops->c->name); |
| 945 | g->ty.type.tp_name = PyString_AS_STRING(g->ty.name); |
| 946 | g->ty.type.tp_base = gmhash_pytype; |
| 947 | Py_INCREF(gmac_pytype); |
| 948 | g->ty.type.tp_flags = (Py_TPFLAGS_DEFAULT | |
| 949 | Py_TPFLAGS_BASETYPE | |
| 950 | Py_TPFLAGS_HEAPTYPE); |
| 951 | g->ty.type.tp_alloc = PyType_GenericAlloc; |
| 952 | g->ty.type.tp_free = 0; |
| 953 | g->ty.type.tp_new = gmhash_pynew; |
| 954 | PyType_Ready(&g->ty.type); |
| 955 | g->m = m; |
| 956 | g->f = f; |
| 957 | return ((PyObject *)g); |
| 958 | } |
| 959 | |
| 960 | static void gmac_pydealloc(PyObject *me) |
| 961 | { |
| 962 | if (GMAC_F(me) & f_freeme) |
| 963 | GM_DESTROY(GMAC_M(me)); |
| 964 | Py_DECREF(me->ob_type); |
| 965 | PyType_Type.tp_dealloc(me); |
| 966 | } |
| 967 | |
| 968 | static PyObject *gcmget_name(PyObject *me, void *hunoz) |
| 969 | { return (PyString_FromString(GCMAC_CM(me)->name)); } |
| 970 | |
| 971 | static PyObject *gcmget_keysz(PyObject *me, void *hunoz) |
| 972 | { return (keysz_pywrap(GCMAC_CM(me)->keysz)); } |
| 973 | |
| 974 | static PyObject *gcmget_tagsz(PyObject *me, void *hunoz) |
| 975 | { return (PyInt_FromLong(GCMAC_CM(me)->hashsz)); } |
| 976 | |
| 977 | static PyGetSetDef gcmac_pygetset[] = { |
| 978 | #define GETSETNAME(op, name) gcm##op##_##name |
| 979 | GET (keysz, "CM.keysz -> acceptable key sizes") |
| 980 | GET (tagsz, "CM.tagsz -> MAC output size") |
| 981 | GET (name, "CM.name -> name of this kind of MAC") |
| 982 | #undef GETSETNAME |
| 983 | { 0 } |
| 984 | }; |
| 985 | |
| 986 | static PyTypeObject gcmac_pytype_skel = { |
| 987 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 988 | "catacomb.GCMAC", /* @tp_name@ */ |
| 989 | sizeof(gchash_pyobj), /* @tp_basicsize@ */ |
| 990 | 0, /* @tp_itemsize@ */ |
| 991 | |
| 992 | 0, /* @tp_dealloc@ */ |
| 993 | 0, /* @tp_print@ */ |
| 994 | 0, /* @tp_getattr@ */ |
| 995 | 0, /* @tp_setattr@ */ |
| 996 | 0, /* @tp_compare@ */ |
| 997 | 0, /* @tp_repr@ */ |
| 998 | 0, /* @tp_as_number@ */ |
| 999 | 0, /* @tp_as_sequence@ */ |
| 1000 | 0, /* @tp_as_mapping@ */ |
| 1001 | 0, /* @tp_hash@ */ |
| 1002 | 0, /* @tp_call@ */ |
| 1003 | 0, /* @tp_str@ */ |
| 1004 | 0, /* @tp_getattro@ */ |
| 1005 | 0, /* @tp_setattro@ */ |
| 1006 | 0, /* @tp_as_buffer@ */ |
| 1007 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 1008 | Py_TPFLAGS_BASETYPE, |
| 1009 | |
| 1010 | /* @tp_doc@ */ |
| 1011 | "Message authentication code metametaclass.", |
| 1012 | |
| 1013 | 0, /* @tp_traverse@ */ |
| 1014 | 0, /* @tp_clear@ */ |
| 1015 | 0, /* @tp_richcompare@ */ |
| 1016 | 0, /* @tp_weaklistoffset@ */ |
| 1017 | 0, /* @tp_iter@ */ |
| 1018 | 0, /* @tp_iternexr@ */ |
| 1019 | 0, /* @tp_methods@ */ |
| 1020 | 0, /* @tp_members@ */ |
| 1021 | gcmac_pygetset, /* @tp_getset@ */ |
| 1022 | 0, /* @tp_base@ */ |
| 1023 | 0, /* @tp_dict@ */ |
| 1024 | 0, /* @tp_descr_get@ */ |
| 1025 | 0, /* @tp_descr_set@ */ |
| 1026 | 0, /* @tp_dictoffset@ */ |
| 1027 | 0, /* @tp_init@ */ |
| 1028 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 1029 | abstract_pynew, /* @tp_new@ */ |
| 1030 | 0, /* @tp_free@ */ |
| 1031 | 0 /* @tp_is_gc@ */ |
| 1032 | }; |
| 1033 | |
| 1034 | static PyTypeObject gmac_pytype_skel = { |
| 1035 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 1036 | "catacomb.GMAC", /* @tp_name@ */ |
| 1037 | sizeof(gmac_pyobj), /* @tp_basicsize@ */ |
| 1038 | 0, /* @tp_itemsize@ */ |
| 1039 | |
| 1040 | gmac_pydealloc, /* @tp_dealloc@ */ |
| 1041 | 0, /* @tp_print@ */ |
| 1042 | 0, /* @tp_getattr@ */ |
| 1043 | 0, /* @tp_setattr@ */ |
| 1044 | 0, /* @tp_compare@ */ |
| 1045 | 0, /* @tp_repr@ */ |
| 1046 | 0, /* @tp_as_number@ */ |
| 1047 | 0, /* @tp_as_sequence@ */ |
| 1048 | 0, /* @tp_as_mapping@ */ |
| 1049 | 0, /* @tp_hash@ */ |
| 1050 | 0, /* @tp_call@ */ |
| 1051 | 0, /* @tp_str@ */ |
| 1052 | 0, /* @tp_getattro@ */ |
| 1053 | 0, /* @tp_setattro@ */ |
| 1054 | 0, /* @tp_as_buffer@ */ |
| 1055 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 1056 | Py_TPFLAGS_BASETYPE, |
| 1057 | |
| 1058 | /* @tp_doc@ */ |
| 1059 | "Message authentication code metaclass, abstract base class.", |
| 1060 | |
| 1061 | 0, /* @tp_traverse@ */ |
| 1062 | 0, /* @tp_clear@ */ |
| 1063 | 0, /* @tp_richcompare@ */ |
| 1064 | 0, /* @tp_weaklistoffset@ */ |
| 1065 | 0, /* @tp_iter@ */ |
| 1066 | 0, /* @tp_iternexr@ */ |
| 1067 | 0, /* @tp_methods@ */ |
| 1068 | 0, /* @tp_members@ */ |
| 1069 | 0, /* @tp_getset@ */ |
| 1070 | 0, /* @tp_base@ */ |
| 1071 | 0, /* @tp_dict@ */ |
| 1072 | 0, /* @tp_descr_get@ */ |
| 1073 | 0, /* @tp_descr_set@ */ |
| 1074 | 0, /* @tp_dictoffset@ */ |
| 1075 | 0, /* @tp_init@ */ |
| 1076 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 1077 | abstract_pynew, /* @tp_new@ */ |
| 1078 | 0, /* @tp_free@ */ |
| 1079 | 0 /* @tp_is_gc@ */ |
| 1080 | }; |
| 1081 | |
| 1082 | static PyTypeObject gmhash_pytype_skel = { |
| 1083 | PyObject_HEAD_INIT(0) 0, /* Header */ |
| 1084 | "catacomb.GMACHash", /* @tp_name@ */ |
| 1085 | sizeof(ghash_pyobj), /* @tp_basicsize@ */ |
| 1086 | 0, /* @tp_itemsize@ */ |
| 1087 | |
| 1088 | ghash_pydealloc, /* @tp_dealloc@ */ |
| 1089 | 0, /* @tp_print@ */ |
| 1090 | 0, /* @tp_getattr@ */ |
| 1091 | 0, /* @tp_setattr@ */ |
| 1092 | 0, /* @tp_compare@ */ |
| 1093 | 0, /* @tp_repr@ */ |
| 1094 | 0, /* @tp_as_number@ */ |
| 1095 | 0, /* @tp_as_sequence@ */ |
| 1096 | 0, /* @tp_as_mapping@ */ |
| 1097 | 0, /* @tp_hash@ */ |
| 1098 | 0, /* @tp_call@ */ |
| 1099 | 0, /* @tp_str@ */ |
| 1100 | 0, /* @tp_getattro@ */ |
| 1101 | 0, /* @tp_setattro@ */ |
| 1102 | 0, /* @tp_as_buffer@ */ |
| 1103 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ |
| 1104 | Py_TPFLAGS_BASETYPE, |
| 1105 | |
| 1106 | /* @tp_doc@ */ |
| 1107 | "Message authentication code, abstract base class.", |
| 1108 | |
| 1109 | 0, /* @tp_traverse@ */ |
| 1110 | 0, /* @tp_clear@ */ |
| 1111 | 0, /* @tp_richcompare@ */ |
| 1112 | 0, /* @tp_weaklistoffset@ */ |
| 1113 | 0, /* @tp_iter@ */ |
| 1114 | 0, /* @tp_iternexr@ */ |
| 1115 | 0, /* @tp_methods@ */ |
| 1116 | 0, /* @tp_members@ */ |
| 1117 | 0, /* @tp_getset@ */ |
| 1118 | 0, /* @tp_base@ */ |
| 1119 | 0, /* @tp_dict@ */ |
| 1120 | 0, /* @tp_descr_get@ */ |
| 1121 | 0, /* @tp_descr_set@ */ |
| 1122 | 0, /* @tp_dictoffset@ */ |
| 1123 | 0, /* @tp_init@ */ |
| 1124 | PyType_GenericAlloc, /* @tp_alloc@ */ |
| 1125 | abstract_pynew, /* @tp_new@ */ |
| 1126 | 0, /* @tp_free@ */ |
| 1127 | 0 /* @tp_is_gc@ */ |
| 1128 | }; |
| 1129 | |
| 1130 | /*----- Main code ---------------------------------------------------------*/ |
| 1131 | |
| 1132 | void algorithms_pyinit(void) |
| 1133 | { |
| 1134 | INITTYPE(keysz, root); |
| 1135 | INITTYPE(keyszany, keysz); |
| 1136 | INITTYPE(keyszrange, keysz); |
| 1137 | INITTYPE(keyszset, keysz); |
| 1138 | INITTYPE(gccipher, type); |
| 1139 | INITTYPE(gcipher, root); |
| 1140 | INITTYPE(gchash, type); |
| 1141 | INITTYPE(ghash, root); |
| 1142 | INITTYPE(gcmac, type); |
| 1143 | INITTYPE(gmac, type); |
| 1144 | INITTYPE(gmhash, ghash); |
| 1145 | } |
| 1146 | |
| 1147 | #define GEN(func, base) \ |
| 1148 | static PyObject *func(void) \ |
| 1149 | { \ |
| 1150 | PyObject *d = PyDict_New(); \ |
| 1151 | PyObject *o; \ |
| 1152 | int i; \ |
| 1153 | \ |
| 1154 | for (i = 0; g##base##tab[i]; i++) { \ |
| 1155 | o = gc##base##_pywrap((/*unconst*/ gc##base *)g##base##tab[i]); \ |
| 1156 | PyDict_SetItemString(d, \ |
| 1157 | (/*unconst*/ char *)g##base##tab[i]->name, \ |
| 1158 | o); \ |
| 1159 | Py_DECREF(o); \ |
| 1160 | } \ |
| 1161 | return (d); \ |
| 1162 | } |
| 1163 | GEN(gcciphers, cipher) |
| 1164 | GEN(gchashes, hash) |
| 1165 | GEN(gcmacs, mac) |
| 1166 | |
| 1167 | void algorithms_pyinsert(PyObject *mod) |
| 1168 | { |
| 1169 | PyObject *d; |
| 1170 | INSERT("KeySZ", keysz_pytype); |
| 1171 | INSERT("KeySZAny", keyszany_pytype); |
| 1172 | INSERT("KeySZRange", keyszrange_pytype); |
| 1173 | INSERT("KeySZSet", keyszset_pytype); |
| 1174 | INSERT("GCCipher", gccipher_pytype); |
| 1175 | INSERT("GCipher", gcipher_pytype); |
| 1176 | INSERT("gcciphers", gcciphers()); |
| 1177 | INSERT("GCHash", gchash_pytype); |
| 1178 | INSERT("GHash", ghash_pytype); |
| 1179 | INSERT("gchashes", d = gchashes()); |
| 1180 | sha_pyobj = PyDict_GetItemString(d, "sha"); Py_INCREF(sha_pyobj); |
| 1181 | has160_pyobj = PyDict_GetItemString(d, "has160"); Py_INCREF(has160_pyobj); |
| 1182 | INSERT("GCMAC", gcmac_pytype); |
| 1183 | INSERT("GMAC", gmac_pytype); |
| 1184 | INSERT("GMACHash", gmhash_pytype); |
| 1185 | INSERT("gcmacs", gcmacs()); |
| 1186 | } |
| 1187 | |
| 1188 | /*----- That's all, folks -------------------------------------------------*/ |