aboutsummaryrefslogtreecommitdiff
path: root/vendor/gmp-6.3.0/mini-gmp/tests/hex-random.c
blob: a5b405ba4b50ba4a5e40f6cbbb2c0e986123eb15 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
/*

Copyright 2011, 2016, 2018 Free Software Foundation, Inc.

This file is part of the GNU MP Library test suite.

The GNU MP Library test suite is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.

The GNU MP Library test suite is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
Public License for more details.

You should have received a copy of the GNU General Public License along with
the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */

#include <stdio.h>
#include <stdlib.h>

#include <time.h>

#ifdef __unix__
# include <unistd.h>
# include <sys/time.h>
#endif

#include "gmp.h"

#include "hex-random.h"

/* FIXME: gmp-impl.h included only for mpz_lucas_mod */
/* #include "gmp-impl.h" */
#if defined (__cplusplus)
extern "C" {
#endif

#define mpz_lucas_mod  __gmpz_lucas_mod
__GMP_DECLSPEC int mpz_lucas_mod (mpz_ptr, mpz_ptr, long, mp_bitcnt_t, mpz_srcptr, mpz_ptr, mpz_ptr);

#if defined (__cplusplus)
}
#endif

static gmp_randstate_t state;

static void
mkseed (mpz_t seed)
{
  FILE *f = fopen ("/dev/urandom", "rb");
  if (f)
    {
      unsigned char buf[6];
      size_t res;

      setbuf (f, NULL);
      res = fread (buf, sizeof(buf), 1, f);
      fclose (f);

      if (res == 1)
	{
	  mpz_import (seed, sizeof(buf), 1, 1, 0, 0, buf);
	  return;
	}
    }

#ifdef __unix__
  {
    struct timeval tv;
    mpz_t usec;
    mpz_init (usec);

    gettimeofday (&tv, NULL);
    mpz_set_ui (seed, tv.tv_sec);
    mpz_set_ui (usec, tv.tv_usec);
    /* usec fits in 20 bits, shift left to make it 48 bits. */
    mpz_mul_2exp (usec, usec, 28);
    mpz_xor (seed, seed, usec);

    mpz_clear (usec);
  }
#else
  mpz_set_ui (seed, time (NULL));
#endif
}

void
hex_random_init (void)
{
  mpz_t seed;
  char *env_seed;

  mpz_init (seed);

  env_seed = getenv ("GMP_CHECK_RANDOMIZE");
  if (env_seed && env_seed[0])
    {
      mpz_set_str (seed, env_seed, 0);
      if (mpz_cmp_ui (seed, 0) != 0)
	gmp_printf ("Re-seeding with GMP_CHECK_RANDOMIZE=%Zd\n", seed);
      else
	{
	  mkseed (seed);
	  gmp_printf ("Seed GMP_CHECK_RANDOMIZE=%Zd (include this in bug reports)\n", seed);
	}
      fflush (stdout);
    }
  else
    mpz_set_ui (seed, 4711);

  gmp_randinit_default (state);
  gmp_randseed (state, seed);

  mpz_clear (seed);
}

char *
hex_urandomb (unsigned long bits)
{
  char *res;
  mpz_t x;

  mpz_init (x);
  mpz_urandomb (x, state, bits);
  gmp_asprintf (&res, "%Zx", x);
  mpz_clear (x);
  return res;
}

char *
hex_rrandomb (unsigned long bits)
{
  char *res;
  mpz_t x;

  mpz_init (x);
  mpz_rrandomb (x, state, bits);
  gmp_asprintf (&res, "%Zx", x);
  mpz_clear (x);
  return res;
}

char *
hex_rrandomb_export (void *dst, size_t *countp,
		     int order, size_t size, int endian, unsigned long bits)
{
  char *res;
  mpz_t x;
  mpz_init (x);
  mpz_rrandomb (x, state, bits);
  gmp_asprintf (&res, "%Zx", x);
  mpz_export (dst, countp, order, size, endian, 0, x);
  mpz_clear (x);
  return res;
}

void hex_random_op2 (enum hex_random_op op,  unsigned long maxbits,
		     char **ap, char **rp)
{
  mpz_t a, r;
  unsigned long abits;
  unsigned signs;

  mpz_init (a);
  mpz_init (r);

  abits = gmp_urandomb_ui (state, 32) % maxbits;

  mpz_rrandomb (a, state, abits);

  signs = gmp_urandomb_ui (state, 1);
  if (signs & 1)
    mpz_neg (a, a);

  switch (op)
    {
    default:
      abort ();
    case OP_SQR:
      mpz_mul (r, a, a);
      break;
    }

  gmp_asprintf (ap, "%Zx", a);
  gmp_asprintf (rp, "%Zx", r);

  mpz_clear (a);
  mpz_clear (r);
}

void
hex_random_op3 (enum hex_random_op op,  unsigned long maxbits,
		char **ap, char **bp, char **rp)
{
  mpz_t a, b, r;
  unsigned long abits, bbits;
  unsigned signs;

  mpz_init (a);
  mpz_init (b);
  mpz_init (r);

  abits = gmp_urandomb_ui (state, 32) % maxbits;
  bbits = gmp_urandomb_ui (state, 32) % maxbits;

  mpz_rrandomb (a, state, abits);
  mpz_rrandomb (b, state, bbits);

  signs = gmp_urandomb_ui (state, 3);
  if (signs & 1)
    mpz_neg (a, a);
  if (signs & 2)
    mpz_neg (b, b);

  switch (op)
    {
    default:
      abort ();
    case OP_ADD:
      mpz_add (r, a, b);
      break;
    case OP_SUB:
      mpz_sub (r, a, b);
      break;
    case OP_MUL:
      mpz_mul (r, a, b);
      break;
    case OP_GCD:
      if (signs & 4)
	{
	  /* Produce a large gcd */
	  unsigned long gbits = gmp_urandomb_ui (state, 32) % maxbits;
	  mpz_rrandomb (r, state, gbits);
	  mpz_mul (a, a, r);
	  mpz_mul (b, b, r);
	}
      mpz_gcd (r, a, b);
      break;
    case OP_LCM:
      if (signs & 4)
	{
	  /* Produce a large gcd */
	  unsigned long gbits = gmp_urandomb_ui (state, 32) % maxbits;
	  mpz_rrandomb (r, state, gbits);
	  mpz_mul (a, a, r);
	  mpz_mul (b, b, r);
	}
      mpz_lcm (r, a, b);
      break;
    case OP_AND:
      mpz_and (r, a, b);
      break;
    case OP_IOR:
      mpz_ior (r, a, b);
      break;
    case OP_XOR:
      mpz_xor (r, a, b);
      break;
    }

  gmp_asprintf (ap, "%Zx", a);
  gmp_asprintf (bp, "%Zx", b);
  gmp_asprintf (rp, "%Zx", r);

  mpz_clear (a);
  mpz_clear (b);
  mpz_clear (r);
}

void
hex_random_op4 (enum hex_random_op op, unsigned long maxbits,
		char **ap, char **bp, char **cp, char **dp)
{
  mpz_t a, b, c, d;
  unsigned long abits, bbits;
  unsigned signs;

  mpz_init (a);
  mpz_init (b);
  mpz_init (c);
  mpz_init (d);

  if (op == OP_POWM)
    {
      unsigned long cbits;
      abits = gmp_urandomb_ui (state, 32) % maxbits;
      bbits = 1 + gmp_urandomb_ui (state, 32) % maxbits;
      cbits = 2 + gmp_urandomb_ui (state, 32) % maxbits;

      mpz_rrandomb (a, state, abits);
      mpz_rrandomb (b, state, bbits);
      mpz_rrandomb (c, state, cbits);

      signs = gmp_urandomb_ui (state, 3);
      if (signs & 1)
	mpz_neg (a, a);
      if (signs & 2)
	{
	  mpz_t g;

	  /* If we negate the exponent, must make sure that gcd(a, c) = 1 */
	  if (mpz_sgn (a) == 0)
	    mpz_set_ui (a, 1);
	  else
	    {
	      mpz_init (g);

	      for (;;)
		{
		  mpz_gcd (g, a, c);
		  if (mpz_cmp_ui (g, 1) == 0)
		    break;
		  mpz_divexact (a, a, g);
		}
	      mpz_clear (g);
	    }
	  mpz_neg (b, b);
	}
      if (signs & 4)
	mpz_neg (c, c);

      mpz_powm (d, a, b, c);
    }
  else
    {
      unsigned long qbits;
      bbits = 1 + gmp_urandomb_ui (state, 32) % maxbits;
      qbits = gmp_urandomb_ui (state, 32) % maxbits;
      abits = bbits + qbits;
      if (abits > 30)
	abits -= 30;
      else
	abits = 0;

      mpz_rrandomb (a, state, abits);
      mpz_rrandomb (b, state, bbits);

      signs = gmp_urandomb_ui (state, 2);
      if (signs & 1)
	mpz_neg (a, a);
      if (signs & 2)
	mpz_neg (b, b);

      switch (op)
	{
	default:
	  abort ();
	case OP_CDIV:
	  mpz_cdiv_qr (c, d, a, b);
	  break;
	case OP_FDIV:
	  mpz_fdiv_qr (c, d, a, b);
	  break;
	case OP_TDIV:
	  mpz_tdiv_qr (c, d, a, b);
	  break;
	}
    }
  gmp_asprintf (ap, "%Zx", a);
  gmp_asprintf (bp, "%Zx", b);
  gmp_asprintf (cp, "%Zx", c);
  gmp_asprintf (dp, "%Zx", d);

  mpz_clear (a);
  mpz_clear (b);
  mpz_clear (c);
  mpz_clear (d);
}

void
hex_random_bit_op (enum hex_random_op op, unsigned long maxbits,
		   char **ap, unsigned long *b, char **rp)
{
  mpz_t a, r;
  unsigned long abits, bbits;
  unsigned signs;

  mpz_init (a);
  mpz_init (r);

  abits = gmp_urandomb_ui (state, 32) % maxbits;
  bbits = gmp_urandomb_ui (state, 32) % (maxbits + 100);

  mpz_rrandomb (a, state, abits);

  signs = gmp_urandomb_ui (state, 1);
  if (signs & 1)
    mpz_neg (a, a);

  switch (op)
    {
    default:
      abort ();

    case OP_SETBIT:
      mpz_set (r, a);
      mpz_setbit (r, bbits);
      break;
    case OP_CLRBIT:
      mpz_set (r, a);
      mpz_clrbit (r, bbits);
      break;
    case OP_COMBIT:
      mpz_set (r, a);
      mpz_combit (r, bbits);
      break;
    case OP_CDIV_Q_2:
      mpz_cdiv_q_2exp (r, a, bbits);
      break;
    case OP_CDIV_R_2:
      mpz_cdiv_r_2exp (r, a, bbits);
      break;
    case OP_FDIV_Q_2:
      mpz_fdiv_q_2exp (r, a, bbits);
      break;
    case OP_FDIV_R_2:
      mpz_fdiv_r_2exp (r, a, bbits);
      break;
    case OP_TDIV_Q_2:
      mpz_tdiv_q_2exp (r, a, bbits);
      break;
    case OP_TDIV_R_2:
      mpz_tdiv_r_2exp (r, a, bbits);
      break;
    }

  gmp_asprintf (ap, "%Zx", a);
  *b = bbits;
  gmp_asprintf (rp, "%Zx", r);

  mpz_clear (a);
  mpz_clear (r);
}

void
hex_random_scan_op (enum hex_random_op op, unsigned long maxbits,
		    char **ap, unsigned long *b, unsigned long *r)
{
  mpz_t a;
  unsigned long abits, bbits;
  unsigned signs;

  mpz_init (a);

  abits = gmp_urandomb_ui (state, 32) % maxbits;
  bbits = gmp_urandomb_ui (state, 32) % (maxbits + 100);

  mpz_rrandomb (a, state, abits);

  signs = gmp_urandomb_ui (state, 1);
  if (signs & 1)
    mpz_neg (a, a);

  switch (op)
    {
    default:
      abort ();

    case OP_SCAN0:
      *r = mpz_scan0 (a, bbits);
      break;
    case OP_SCAN1:
      *r = mpz_scan1 (a, bbits);
      break;
    }
  gmp_asprintf (ap, "%Zx", a);
  *b = bbits;

  mpz_clear (a);
}

void
hex_random_str_op (unsigned long maxbits,
		   int base, char **ap, char **rp)
{
  mpz_t a;
  unsigned long abits;
  unsigned signs;

  mpz_init (a);

  abits = gmp_urandomb_ui (state, 32) % maxbits;

  mpz_rrandomb (a, state, abits);

  signs = gmp_urandomb_ui (state, 2);
  if (signs & 1)
    mpz_neg (a, a);

  *ap = mpz_get_str (NULL, 16, a);
  *rp = mpz_get_str (NULL, base, a);

  mpz_clear (a);
}

void hex_random_lucm_op (unsigned long maxbits,
			 char **vp, char **qp, char **mp,
			 long *Q, unsigned long *b0, int *res)
{
  mpz_t m, v, q, t1, t2;
  unsigned long mbits;

  mpz_init (m);
  mpz_init (v);
  mpz_init (q);
  mpz_init (t1);
  mpz_init (t2);

  *Q = gmp_urandomb_ui (state, 14) + 1;

  do
    {
      mbits = gmp_urandomb_ui (state, 32) % maxbits + 5;

      mpz_rrandomb (m, state, mbits);
      *b0 = gmp_urandomb_ui (state, 32) % (mbits - 3) + 2;
      /* The GMP  implementation uses the exponent (m >> b0) + 1. */
      /* mini-gmp implementation uses the exponent (m >> b0) | 1. */
      /* They are the same (and are used) only when (m >> b0) is even */
      mpz_clrbit (m, *b0);
      /* mini-gmp implementation only works if the modulus is odd. */
      mpz_setbit (m, 0);
    }
  while (mpz_gcd_ui (NULL, m, *Q) != 1);

  if (*Q == 1 || gmp_urandomb_ui (state, 1))
    *Q = - *Q;

#if (__GNU_MP_VERSION == 6 && (__GNU_MP_VERSION_MINOR > 1 || __GNU_MP_VERSION_PATCHLEVEL > 9))
  *res = mpz_lucas_mod (v, q, *Q, *b0, m, t1, t2);
#else
  *b0 = 0;
#endif

  gmp_asprintf (vp, "%Zx", v);
  gmp_asprintf (qp, "%Zx", q);
  gmp_asprintf (mp, "%Zx", m);

  mpz_clear (m);
  mpz_clear (v);
  mpz_clear (q);
  mpz_clear (t1);
  mpz_clear (t2);
}

void
hex_mpq_random_str_op (unsigned long maxbits,
		       int base, char **ap, char **rp)
{
  mpq_t a;
  unsigned long abits;
  unsigned signs;

  mpq_init (a);

  abits = gmp_urandomb_ui (state, 32) % maxbits;

  mpz_rrandomb (mpq_numref (a), state, abits);
  mpz_rrandomb (mpq_denref (a), state, abits);
  mpz_add_ui (mpq_denref (a), mpq_denref (a), 1);

  mpq_canonicalize (a);
  signs = gmp_urandomb_ui (state, 2);
  if (signs & 1)
    mpq_neg (a, a);

  *ap = mpq_get_str (NULL, 16, a);
  *rp = mpq_get_str (NULL, base, a);

  mpq_clear (a);
}