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1 | # -*-python-*- |
2 | # |
3 | # $Id$ |
4 | # |
5 | # Setup for Catacomb/Python bindings |
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 | import _base |
29 | import types as _types |
30 | from binascii import hexlify as _hexify, unhexlify as _unhexify |
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31 | from sys import argv as _argv |
32 | |
33 | _base._ego(_argv[0]) |
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34 | |
35 | def _init(): |
36 | d = globals() |
37 | b = _base.__dict__; |
38 | for i in b: |
39 | if i[0] != '_': |
40 | d[i] = b[i]; |
41 | for i in ['MP', 'GF', 'Field', |
42 | 'ECPt', 'ECPtCurve', 'ECCurve', 'ECInfo', |
43 | 'DHInfo', 'BinDHInfo', 'RSAPriv', 'PrimeFilter', 'RabinMiller', |
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44 | 'Group', 'GE', |
45 | 'KeyData']: |
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46 | c = d[i] |
47 | pre = '_' + i + '_' |
48 | plen = len(pre) |
49 | for j in b: |
50 | if j[:plen] == pre: |
51 | setattr(c, j[plen:], classmethod(b[j])) |
52 | for i in [gcciphers, gchashes, gcmacs]: |
53 | for j in i: |
54 | c = i[j] |
55 | d[c.name.replace('-', '_')] = c |
56 | _init() |
57 | |
58 | def _augment(c, cc): |
59 | for i in cc.__dict__: |
60 | a = cc.__dict__[i] |
61 | if type(a) is _types.MethodType: |
62 | a = a.im_func |
63 | elif type(a) not in (_types.FunctionType, staticmethod, classmethod): |
64 | continue |
65 | setattr(c, i, a) |
66 | |
67 | class _tmp: |
68 | def fromhex(x): |
69 | return ByteString(_unhexify(x)) |
70 | fromhex = staticmethod(fromhex) |
71 | def __hex__(me): |
72 | return _hexify(me) |
73 | def __repr__(me): |
74 | return 'bytes(%r)' % hex(me) |
75 | _augment(ByteString, _tmp) |
76 | bytes = ByteString.fromhex |
77 | |
78 | class _tmp: |
79 | def negp(x): return x < 0 |
80 | def posp(x): return x > 0 |
81 | def zerop(x): return x == 0 |
82 | def oddp(x): return x.testbit(0) |
83 | def evenp(x): return not x.testbit(0) |
84 | def mont(x): return MPMont(x) |
85 | def barrett(x): return MPBarrett(x) |
86 | def reduce(x): return MPReduce(x) |
87 | def factorial(x): |
88 | 'factorial(X) -> X!' |
89 | if x < 0: raise ValueError, 'factorial argument must be > 0' |
90 | return MP.product(xrange(1, x + 1)) |
91 | factorial = staticmethod(factorial) |
92 | _augment(MP, _tmp) |
93 | |
94 | def _checkend(r): |
95 | x, rest = r |
96 | if rest != '': |
97 | raise SyntaxError, 'junk at end of string' |
98 | return x |
99 | |
100 | class _tmp: |
101 | def reduce(x): return GReduce(x) |
102 | _augment(GF, _tmp) |
103 | |
104 | class _tmp: |
105 | def fromstring(str): return _checkend(Field.parse(str)) |
106 | fromstring = staticmethod(fromstring) |
107 | _augment(Field, _tmp) |
108 | |
109 | class _tmp: |
110 | def __repr__(me): return '%s(%sL)' % (type(me).__name__, me.p) |
111 | def ec(me, a, b): return ECPrimeProjCurve(me, a, b) |
112 | _augment(PrimeField, _tmp) |
113 | |
114 | class _tmp: |
115 | def __repr__(me): return '%s(%sL)' % (type(me).__name__, hex(me.p)) |
116 | def ec(me, a, b): return ECBinProjCurve(me, a, b) |
117 | _augment(BinField, _tmp) |
118 | |
119 | class _tmp: |
120 | def __str__(me): return str(me.value) |
121 | def __repr__(me): return '%s(%s)' % (repr(me.field), repr(me.value)) |
122 | _augment(FE, _tmp) |
123 | |
124 | class _groupmap (object): |
125 | def __init__(me, map, nth): |
126 | me.map = map |
127 | me.nth = nth |
128 | me.i = [None] * (max(map.values()) + 1) |
129 | def __repr__(me): |
130 | return '{%s}' % ', '.join(['%r: %r' % (k, me[k]) for k in me]) |
131 | def __contains__(me, k): |
132 | return k in me.map |
133 | def __getitem__(me, k): |
134 | i = me.map[k] |
135 | if me.i[i] is None: |
136 | me.i[i] = me.nth(i) |
137 | return me.i[i] |
138 | def __setitem__(me, k, v): |
139 | raise TypeError, "immutable object" |
140 | def __iter__(me): |
141 | return iter(me.map) |
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142 | def keys(me): |
143 | return [k for k in me] |
144 | def values(me): |
145 | return [me[k] for k in me] |
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146 | eccurves = _groupmap(_base._eccurves, ECInfo._curven) |
147 | primegroups = _groupmap(_base._pgroups, DHInfo._groupn) |
148 | bingroups = _groupmap(_base._bingroups, BinDHInfo._groupn) |
149 | |
150 | class _tmp: |
151 | def __repr__(me): |
152 | return '%s(%r, %s, %s)' % (type(me).__name__, me.field, me.a, me.b) |
153 | def frombuf(me, s): |
154 | return ecpt.frombuf(me, s) |
155 | def fromraw(me, s): |
156 | return ecpt.fromraw(me, s) |
157 | def pt(me, *args): |
158 | return ECPt(me, *args) |
159 | _augment(ECCurve, _tmp) |
160 | |
161 | class _tmp: |
162 | def __repr__(me): |
163 | if not me: return 'ECPt()' |
164 | return 'ECPt(%s, %s)' % (me.ix, me.iy) |
165 | def __str__(me): |
166 | if not me: return 'inf' |
167 | return '(%s, %s)' % (me.ix, me.iy) |
168 | _augment(ECPt, _tmp) |
169 | |
170 | class _tmp: |
171 | def __repr__(me): |
172 | return 'ECInfo(curve = %r, G = %r, r = %s, h = %s)' % \ |
173 | (me.curve, me.G, me.r, me.h) |
174 | def group(me): |
175 | return ECGroup(me) |
176 | _augment(ECInfo, _tmp) |
177 | |
178 | class _tmp: |
179 | def __repr__(me): |
180 | if not me: return '%r()' % (me.curve) |
181 | return '%r(%s, %s)' % (me.curve, me.x, me.y) |
182 | def __str__(me): |
183 | if not me: return 'inf' |
184 | return '(%s, %s)' % (me.x, me.y) |
185 | _augment(ECPtCurve, _tmp) |
186 | |
187 | class _tmp: |
188 | def __repr__(me): return 'KeySZAny(%d)' % me.default |
189 | def check(me, sz): return True |
190 | def best(me, sz): return sz |
191 | _augment(KeySZAny, _tmp) |
192 | |
193 | class _tmp: |
194 | def __repr__(me): |
195 | return 'KeySZRange(%d, %d, %d, %d)' % \ |
196 | (me.default, me.min, me.max, me.mod) |
197 | def check(me, sz): return me.min <= sz <= me.max and sz % me.mod == 0 |
198 | def best(me, sz): |
199 | if sz < me.min: raise ValueError, 'key too small' |
200 | elif sz > me.max: return me.max |
201 | else: return sz - (sz % me.mod) |
202 | _augment(KeySZRange, _tmp) |
203 | |
204 | class _tmp: |
205 | def __repr__(me): return 'KeySZSet(%d, %s)' % (me.default, me.set) |
206 | def check(me, sz): return sz in me.set |
207 | def best(me, sz): |
208 | found = -1 |
209 | for i in me.set: |
210 | if found < i <= sz: found = i |
211 | if found < 0: raise ValueError, 'key too small' |
212 | return found |
213 | _augment(KeySZSet, _tmp) |
214 | |
215 | class _tmp: |
216 | def __repr__(me): |
217 | return '%s(p = %s, r = %s, g = %s)' % \ |
218 | (type(me).__name__, me.p, me.r, me.g) |
219 | _augment(FGInfo, _tmp) |
220 | |
221 | class _tmp: |
222 | def group(me): return PrimeGroup(me) |
223 | _augment(DHInfo, _tmp) |
224 | |
225 | class _tmp: |
226 | def group(me): return BinGroup(me) |
227 | _augment(BinDHInfo, _tmp) |
228 | |
229 | class _tmp: |
230 | def __repr__(me): |
231 | return '%s(%r)' % (type(me).__name__, me.info) |
232 | _augment(Group, _tmp) |
233 | |
234 | class _tmp: |
235 | def __repr__(me): |
236 | return '%r(%r)' % (me.group, str(me)) |
237 | _augment(GE, _tmp) |
238 | |
239 | class PKCS1Crypt(object): |
240 | def __init__(me, ep = '', rng = rand): |
241 | me.ep = ep |
242 | me.rng = rng |
243 | def encode(me, msg, nbits): |
244 | return _base._p1crypt_encode(msg, nbits, me.ep, me.rng) |
245 | def decode(me, ct, nbits): |
246 | return _base._p1crypt_decode(ct, nbits, me.ep, me.rng) |
247 | |
248 | class PKCS1Sig(object): |
249 | def __init__(me, ep = '', rng = rand): |
250 | me.ep = ep |
251 | me.rng = rng |
252 | def encode(me, msg, nbits): |
253 | return _base._p1sig_encode(msg, nbits, me.ep, me.rng) |
254 | def decode(me, msg, sig, nbits): |
255 | return _base._p1sig_decode(msg, sig, nbits, me.ep, me.rng) |
256 | |
257 | class OAEP(object): |
258 | def __init__(me, mgf = sha_mgf, hash = sha, ep = '', rng = rand): |
259 | me.mgf = mgf |
260 | me.hash = hash |
261 | me.ep = ep |
262 | me.rng = rng |
263 | def encode(me, msg, nbits): |
264 | return _base._oaep_encode(msg, nbits, me.mgf, me.hash, me.ep, me.rng) |
265 | def decode(me, ct, nbits): |
266 | return _base._oaep_decode(ct, nbits, me.mgf, me.hash, me.ep, me.rng) |
267 | |
268 | class PSS(object): |
269 | def __init__(me, mgf = sha_mgf, hash = sha, saltsz = None, rng = rand): |
270 | me.mgf = mgf |
271 | me.hash = hash |
272 | if saltsz is None: |
273 | saltsz = hash.hashsz |
274 | me.saltsz = saltsz |
275 | me.rng = rng |
276 | def encode(me, msg, nbits): |
277 | return _base._pss_encode(msg, nbits, me.mgf, me.hash, me.saltsz, me.rng) |
278 | def decode(me, msg, sig, nbits): |
279 | return _base._pss_decode(msg, sig, nbits, |
280 | me.mgf, me.hash, me.saltsz, me.rng) |
281 | |
282 | class _tmp: |
283 | def encrypt(me, msg, enc): |
284 | return me.pubop(enc.encode(msg, me.n.nbits)) |
285 | def verify(me, msg, sig, enc): |
286 | if msg is None: return enc.decode(msg, me.pubop(sig), me.n.nbits) |
287 | try: |
288 | x = enc.decode(msg, me.pubop(sig), me.n.nbits) |
289 | return x is None or x == msg |
290 | except ValueError: |
291 | return False |
292 | _augment(RSAPub, _tmp) |
293 | |
294 | class _tmp: |
295 | def decrypt(me, ct, enc): return enc.decode(me.privop(ct), me.n.nbits) |
296 | def sign(me, msg, enc): return me.privop(enc.encode(msg, me.n.nbits)) |
297 | _augment(RSAPriv, _tmp) |
298 | |
299 | |
300 | class SophieGermainStepJump (object): |
301 | def pg_begin(me, ev): |
302 | me.lf = PrimeFilter(ev.x) |
303 | me.hf = me.lf.muladd(2, 1) |
304 | return me.cont(ev) |
305 | def pg_try(me, ev): |
306 | me.step() |
307 | return me.cont(ev) |
308 | def cont(me, ev): |
309 | while me.lf.status == PGEN_FAIL or me.hf.status == PGEN_FAIL: |
310 | me.step() |
311 | if me.lf.status == PGEN_ABORT or me.hf.status == PGEN_ABORT: |
312 | return PGEN_ABORT |
313 | ev.x = me.lf.x |
314 | if me.lf.status == PGEN_DONE and me.hf.status == PGEN_DONE: |
315 | return PGEN_DONE |
316 | return PGEN_TRY |
317 | def pg_done(me, ev): |
318 | del me.lf |
319 | del me.hf |
320 | |
321 | class SophieGermainStepper (SophieGermainStepJump): |
322 | def __init__(me, step): |
323 | me.lstep = step; |
324 | me.hstep = 2 * step |
325 | def step(me): |
326 | me.lf.step(me.lstep) |
327 | me.hf.step(me.hstep) |
328 | |
329 | class SophieGermainJumper (SophieGermainStepJump): |
330 | def __init__(me, jump): |
331 | me.ljump = PrimeFilter(jump); |
332 | me.hjump = me.ljump.muladd(2, 0) |
333 | def step(me): |
334 | me.lf.jump(me.ljump) |
335 | me.hf.jump(me.hjump) |
336 | def pg_done(me, ev): |
337 | del me.ljump |
338 | del me.hjump |
339 | SophieGermainStepJump.pg_done(me, ev) |
340 | |
341 | class SophieGermainTester (object): |
342 | def __init__(me): |
343 | pass |
344 | def pg_begin(me, ev): |
345 | me.lr = RabinMiller(ev.x) |
346 | me.hr = RabinMiller(2 * ev.x + 1) |
347 | def pg_try(me, ev): |
348 | lst = me.lr.test(ev.rng.range(me.lr.x)) |
349 | if lst != PGEN_PASS and lst != PGEN_DONE: |
350 | return lst |
351 | rst = me.hr.test(ev.rng.range(me.hr.x)) |
352 | if rst != PGEN_PASS and rst != PGEN_DONE: |
353 | return rst |
354 | if lst == PGEN_DONE and rst == PGEN_DONE: |
355 | return PGEN_DONE |
356 | return PGEN_PASS |
357 | def pg_done(me, ev): |
358 | del me.lr |
359 | del me.hr |
360 | |
361 | class PrimeGenEventHandler (object): |
362 | def pg_begin(me, ev): |
363 | return me.pg_try(ev) |
364 | def pg_done(me, ev): |
365 | return PGEN_DONE |
366 | def pg_abort(me, ev): |
367 | return PGEN_TRY |
368 | def pg_fail(me, ev): |
369 | return PGEN_TRY |
370 | def pg_pass(me, ev): |
371 | return PGEN_TRY |
372 | |
373 | class PrimitiveStepper (PrimeGenEventHandler): |
374 | def __init__(me): |
375 | pass |
376 | def pg_try(me, ev): |
377 | ev.x = me.i.next() |
378 | return PGEN_TRY |
379 | def pg_begin(me, ev): |
380 | me.i = iter(smallprimes) |
381 | return me.pg_try(ev) |
382 | |
383 | class PrimitiveTester (PrimeGenEventHandler): |
384 | def __init__(me, mod, hh = [], exp = None): |
385 | me.mod = MPMont(mod) |
386 | me.exp = exp |
387 | me.hh = hh |
388 | def pg_try(me, ev): |
389 | x = ev.x |
390 | if me.exp is not None: |
391 | x = me.mod.exp(x, me.exp) |
392 | if x == 1: return PGEN_FAIL |
393 | for h in me.hh: |
394 | if me.mod.exp(x, h) == 1: return PGEN_FAIL |
395 | ev.x = x |
396 | return PGEN_DONE |
397 | |
398 | class SimulStepper (PrimeGenEventHandler): |
399 | def __init__(me, mul = 2, add = 1, step = 2): |
400 | me.step = step |
401 | me.mul = mul |
402 | me.add = add |
403 | def _stepfn(me, step): |
404 | if step <= 0: |
405 | raise ValueError, 'step must be positive' |
406 | if step <= MPW_MAX: |
407 | return lambda f: f.step(step) |
408 | j = PrimeFilter(step) |
409 | return lambda f: f.jump(j) |
410 | def pg_begin(me, ev): |
411 | x = ev.x |
412 | me.lf = PrimeFilter(x) |
413 | me.hf = PrimeFilter(x * me.mul + me.add) |
414 | me.lstep = me._stepfn(me.step) |
415 | me.hstep = me._stepfn(me.step * me.mul) |
416 | SimulStepper._cont(me, ev) |
417 | def pg_try(me, ev): |
418 | me._step() |
419 | me._cont(ev) |
420 | def _step(me): |
421 | me.lstep(me.lf) |
422 | me.hstep(me.hf) |
423 | def _cont(me, ev): |
424 | while me.lf.status == PGEN_FAIL or me.hf.status == PGEN_FAIL: |
425 | me._step() |
426 | if me.lf.status == PGEN_ABORT or me.hf.status == PGEN_ABORT: |
427 | return PGEN_ABORT |
428 | ev.x = me.lf.x |
429 | if me.lf.status == PGEN_DONE and me.hf.status == PGEN_DONE: |
430 | return PGEN_DONE |
431 | return PGEN_TRY |
432 | def pg_done(me, ev): |
433 | del me.lf |
434 | del me.hf |
435 | del me.lstep |
436 | del me.hstep |
437 | |
438 | class SimulTester (PrimeGenEventHandler): |
439 | def __init__(me, mul = 2, add = 1): |
440 | me.mul = mul |
441 | me.add = add |
442 | def pg_begin(me, ev): |
443 | x = ev.x |
444 | me.lr = RabinMiller(x) |
445 | me.hr = RabinMiller(x * me.mul + me.add) |
446 | def pg_try(me, ev): |
447 | lst = me.lr.test(ev.rng.range(me.lr.x)) |
448 | if lst != PGEN_PASS and lst != PGEN_DONE: |
449 | return lst |
450 | rst = me.hr.test(ev.rng.range(me.hr.x)) |
451 | if rst != PGEN_PASS and rst != PGEN_DONE: |
452 | return rst |
453 | if lst == PGEN_DONE and rst == PGEN_DONE: |
454 | return PGEN_DONE |
455 | return PGEN_PASS |
456 | def pg_done(me, ev): |
457 | del me.lr |
458 | del me.hr |
459 | |
460 | def sgprime(start, step = 2, name = 'p', event = pgen_nullev, nsteps = 0): |
461 | start = MP(start) |
462 | return pgen(start, name, SimulStepper(step = step), SimulTester(), event, |
463 | nsteps, RabinMiller.iters(start.nbits)) |
464 | |
465 | def findprimitive(mod, hh = [], exp = None, name = 'g', event = pgen_nullev): |
466 | return pgen(0, name, PrimitiveStepper(), PrimitiveTester(mod, hh, exp), |
467 | event, 0, 1) |
468 | |
469 | def kcdsaprime(pbits, qbits, rng = rand, |
470 | event = pgen_nullev, name = 'p', nsteps = 0): |
471 | hbits = pbits - qbits |
472 | h = pgen(rng.mp(hbits, 1), name + ' [h]', |
473 | PrimeGenStepper(2), PrimeGenTester(), |
474 | event, nsteps, RabinMiller.iters(hbits)) |
475 | q = pgen(rng.mp(qbits, 1), name, SimulStepper(2 * h, 1, 2), |
476 | SimulTester(2 * h, 1), event, nsteps, RabinMiller.iters(qbits)) |
477 | p = 2 * q * h + 1 |
478 | return p, q, h |
479 | |
43c09851 |
480 | import pwsafe |
481 | |
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482 | #----- That's all, folks ---------------------------------------------------- |