dll/win32/rsaenh/tomcrypt.h

   1 /*
   2  * dlls/rsaenh/tomcrypt.h
   3  * Function prototypes, type definitions and constant definitions
   4  * for LibTomCrypt code.
   5  *
   6  * Copyright 2004 Michael Jung
   7  * Based on public domain code by Tom St Denis (tomstdenis@iahu.ca)
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 /*
  25  * This file contains code from the LibTomCrypt cryptographic
  26  * library written by Tom St Denis (tomstdenis@iahu.ca). LibTomCrypt
  27  * is in the public domain. The code in this file is tailored to
  28  * special requirements. Take a look at http://libtomcrypt.org for the
  29  * original version.
  30  */
  31
  32 #ifndef __WINE_TOMCRYPT_H_
  33 #define __WINE_TOMCRYPT_H_
  34
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <stdlib.h>
  38 #include <limits.h>
  39 #include "basetsd.h"
  40
  41 /* error codes [will be expanded in future releases] */
  42 enum {
  43    CRYPT_OK=0,             /* Result OK */
  44    CRYPT_ERROR,            /* Generic Error */
  45    CRYPT_NOP,              /* Not a failure but no operation was performed */
  46
  47    CRYPT_INVALID_KEYSIZE,  /* Invalid key size given */
  48    CRYPT_INVALID_ROUNDS,   /* Invalid number of rounds */
  49    CRYPT_FAIL_TESTVECTOR,  /* Algorithm failed test vectors */
  50
  51    CRYPT_BUFFER_OVERFLOW,  /* Not enough space for output */
  52    CRYPT_INVALID_PACKET,   /* Invalid input packet given */
  53
  54    CRYPT_INVALID_PRNGSIZE, /* Invalid number of bits for a PRNG */
  55    CRYPT_ERROR_READPRNG,   /* Could not read enough from PRNG */
  56
  57    CRYPT_INVALID_CIPHER,   /* Invalid cipher specified */
  58    CRYPT_INVALID_HASH,     /* Invalid hash specified */
  59    CRYPT_INVALID_PRNG,     /* Invalid PRNG specified */
  60
  61    CRYPT_MEM,              /* Out of memory */
  62
  63    CRYPT_PK_TYPE_MISMATCH, /* Not equivalent types of PK keys */
  64    CRYPT_PK_NOT_PRIVATE,   /* Requires a private PK key */
  65
  66    CRYPT_INVALID_ARG,      /* Generic invalid argument */
  67    CRYPT_FILE_NOTFOUND,    /* File Not Found */
  68
  69    CRYPT_PK_INVALID_TYPE,  /* Invalid type of PK key */
  70    CRYPT_PK_INVALID_SYSTEM,/* Invalid PK system specified */
  71    CRYPT_PK_DUP,           /* Duplicate key already in key ring */
  72    CRYPT_PK_NOT_FOUND,     /* Key not found in keyring */
  73    CRYPT_PK_INVALID_SIZE,  /* Invalid size input for PK parameters */
  74
  75    CRYPT_INVALID_PRIME_SIZE/* Invalid size of prime requested */
  76 };
  77
  78 #define CONST64(a,b) ((((ULONG64)(a)) << 32) | (b))
  79 typedef ULONG64 ulong64;
  80
  81 /* this is the "32-bit at least" data type
  82  * Re-define it to suit your platform but it must be at least 32-bits
  83  */
  84 typedef ULONG32 ulong32;
  85
  86 /* ---- HELPER MACROS ---- */
  87 #define STORE32H(x, y)                                                                     \
  88      { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255);   \
  89        (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }
  90
  91 #define LOAD32H(x, y)                            \
  92      { x = ((unsigned long)((y)[0] & 255)<<24) | \
  93            ((unsigned long)((y)[1] & 255)<<16) | \
  94            ((unsigned long)((y)[2] & 255)<<8)  | \
  95            ((unsigned long)((y)[3] & 255)); }
  96
  97 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && !defined(INTEL_CC)
  98
  99 static inline unsigned ROR(unsigned word, int i)
 100 {
 101    __asm__("rorl %%cl,%0"
 102       :"=r" (word)
 103       :"0" (word),"c" (i));
 104    return word;
 105 }
 106
 107 #else
 108
 109 /* rotates the hard way */
 110 #define ROR(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | \
 111                     ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
 112
 113 #endif
 114
 115 #undef MIN
 116 #define MIN(x, y) ( ((x)<(y))?(x):(y) )
 117
 118 #define byte(x, n) (((x) >> (8 * (n))) & 255)
 119
 120 typedef struct tag_rc2_key {
 121         unsigned xkey[64];
 122 } rc2_key;
 123
 124 typedef struct tag_des_key {
 125     ulong32 ek[32], dk[32];
 126 } des_key;
 127
 128 typedef struct tag_des3_key {
 129     ulong32 ek[3][32], dk[3][32];
 130 } des3_key;
 131
 132 typedef struct tag_aes_key {
 133    ulong32 eK[64], dK[64];
 134    int Nr;
 135 } aes_key;
 136
 137 int rc2_setup(const unsigned char *key, int keylen, int bits, int num_rounds, rc2_key *skey);
 138 void rc2_ecb_encrypt(const unsigned char *pt, unsigned char *ct, rc2_key *key);
 139 void rc2_ecb_decrypt(const unsigned char *ct, unsigned char *pt, rc2_key *key);
 140
 141 int des_setup(const unsigned char *key, int keylen, int num_rounds, des_key *skey);
 142 void des_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const des_key *key);
 143 void des_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const des_key *key);
 144
 145 int des3_setup(const unsigned char *key, int keylen, int num_rounds, des3_key *skey);
 146 void des3_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const des3_key *key);
 147 void des3_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const des3_key *key);
 148
 149 int aes_setup(const unsigned char *key, int keylen, int rounds, aes_key *skey);
 150 void aes_ecb_encrypt(const unsigned char *pt, unsigned char *ct, aes_key *skey);
 151 void aes_ecb_decrypt(const unsigned char *ct, unsigned char *pt, aes_key *skey);
 152
 153 typedef struct tag_md2_state {
 154     unsigned char chksum[16], X[48], buf[16];
 155     unsigned long curlen;
 156 } md2_state;
 157
 158 int md2_init(md2_state * md);
 159 int md2_process(md2_state * md, const unsigned char *buf, unsigned long len);
 160 int md2_done(md2_state * md, unsigned char *hash);
 161
 162 struct rc4_prng {
 163     int x, y;
 164     unsigned char buf[256];
 165 };
 166
 167 typedef union Prng_state {
 168     struct rc4_prng       rc4;
 169 } prng_state;
 170
 171 int rc4_start(prng_state *prng);
 172 int rc4_add_entropy(const unsigned char *buf, unsigned long len, prng_state *prng);
 173 int rc4_ready(prng_state *prng);
 174 unsigned long rc4_read(unsigned char *buf, unsigned long len, prng_state *prng);
 175
 176 /* some default configurations.
 177  *
 178  * A "mp_digit" must be able to hold DIGIT_BIT + 1 bits
 179  * A "mp_word" must be able to hold 2*DIGIT_BIT + 1 bits
 180  *
 181  * At the very least a mp_digit must be able to hold 7 bits
 182  * [any size beyond that is ok provided it doesn't overflow the data type]
 183  */
 184 typedef unsigned long      mp_digit;
 185 typedef ulong64            mp_word;
 186 #define DIGIT_BIT 28
 187
 188 #define MP_DIGIT_BIT     DIGIT_BIT
 189 #define MP_MASK          ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1))
 190 #define MP_DIGIT_MAX     MP_MASK
 191
 192 /* equalities */
 193 #define MP_LT        -1   /* less than */
 194 #define MP_EQ         0   /* equal to */
 195 #define MP_GT         1   /* greater than */
 196
 197 #define MP_ZPOS       0   /* positive integer */
 198 #define MP_NEG        1   /* negative */
 199
 200 #define MP_OKAY       0   /* ok result */
 201 #define MP_MEM        -2  /* out of mem */
 202 #define MP_VAL        -3  /* invalid input */
 203 #define MP_RANGE      MP_VAL
 204
 205 #define MP_YES        1   /* yes response */
 206 #define MP_NO         0   /* no response */
 207
 208 /* Primality generation flags */
 209 #define LTM_PRIME_BBS      0x0001 /* BBS style prime */
 210 #define LTM_PRIME_SAFE     0x0002 /* Safe prime (p-1)/2 == prime */
 211 #define LTM_PRIME_2MSB_OFF 0x0004 /* force 2nd MSB to 0 */
 212 #define LTM_PRIME_2MSB_ON  0x0008 /* force 2nd MSB to 1 */
 213
 214 typedef int           mp_err;
 215
 216 /* define this to use lower memory usage routines (exptmods mostly) */
 217 /* #define MP_LOW_MEM */
 218
 219 #define MP_PREC                 64     /* default digits of precision */
 220
 221 /* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - BITS_PER_DIGIT*2) */
 222 #define MP_WARRAY               (1 << (sizeof(mp_word) * CHAR_BIT - 2 * DIGIT_BIT + 1))
 223
 224 /* the infamous mp_int structure */
 225 typedef struct  {
 226     int used, alloc, sign;
 227     mp_digit *dp;
 228 } mp_int;
 229
 230 /* callback for mp_prime_random, should fill dst with random bytes and return how many read [up to len] */
 231 typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
 232
 233 #define DIGIT(m,k) ((m)->dp[(k)])
 234
 235 /* error code to char* string */
 236 char *mp_error_to_string(int code);
 237
 238 /* ---> init and deinit bignum functions <--- */
 239 /* init a bignum */
 240 int mp_init(mp_int *a);
 241
 242 /* free a bignum */
 243 void mp_clear(mp_int *a);
 244
 245 /* init a null terminated series of arguments */
 246 int mp_init_multi(mp_int *mp, ...);
 247
 248 /* clear a null terminated series of arguments */
 249 void mp_clear_multi(mp_int *mp, ...);
 250
 251 /* exchange two ints */
 252 void mp_exch(mp_int *a, mp_int *b);
 253
 254 /* shrink ram required for a bignum */
 255 int mp_shrink(mp_int *a);
 256
 257 /* grow an int to a given size */
 258 int mp_grow(mp_int *a, int size);
 259
 260 /* init to a given number of digits */
 261 int mp_init_size(mp_int *a, int size);
 262
 263 /* ---> Basic Manipulations <--- */
 264 #define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
 265 #define mp_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
 266 #define mp_isodd(a)  (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
 267
 268 /* set to zero */
 269 void mp_zero(mp_int *a);
 270
 271 /* set to a digit */
 272 void mp_set(mp_int *a, mp_digit b);
 273
 274 /* set a 32-bit const */
 275 int mp_set_int(mp_int *a, unsigned long b);
 276
 277 /* get a 32-bit value */
 278 unsigned long mp_get_int(const mp_int * a);
 279
 280 /* initialize and set a digit */
 281 int mp_init_set (mp_int * a, mp_digit b);
 282
 283 /* initialize and set 32-bit value */
 284 int mp_init_set_int (mp_int * a, unsigned long b);
 285
 286 /* copy, b = a */
 287 int mp_copy(const mp_int *a, mp_int *b);
 288
 289 /* inits and copies, a = b */
 290 int mp_init_copy(mp_int *a, const mp_int *b);
 291
 292 /* trim unused digits */
 293 void mp_clamp(mp_int *a);
 294
 295 /* ---> digit manipulation <--- */
 296
 297 /* right shift by "b" digits */
 298 void mp_rshd(mp_int *a, int b);
 299
 300 /* left shift by "b" digits */
 301 int mp_lshd(mp_int *a, int b);
 302
 303 /* c = a / 2**b */
 304 int mp_div_2d(const mp_int *a, int b, mp_int *c, mp_int *d);
 305
 306 /* b = a/2 */
 307 int mp_div_2(const mp_int *a, mp_int *b);
 308
 309 /* c = a * 2**b */
 310 int mp_mul_2d(const mp_int *a, int b, mp_int *c);
 311
 312 /* b = a*2 */
 313 int mp_mul_2(const mp_int *a, mp_int *b);
 314
 315 /* c = a mod 2**d */
 316 int mp_mod_2d(const mp_int *a, int b, mp_int *c);
 317
 318 /* computes a = 2**b */
 319 int mp_2expt(mp_int *a, int b);
 320
 321 /* Counts the number of lsbs which are zero before the first zero bit */
 322 int mp_cnt_lsb(const mp_int *a);
 323
 324 /* I Love Earth! */
 325
 326 /* makes a pseudo-random int of a given size */
 327 int mp_rand(mp_int *a, int digits);
 328
 329 /* ---> binary operations <--- */
 330 /* c = a XOR b  */
 331 int mp_xor(mp_int *a, mp_int *b, mp_int *c);
 332
 333 /* c = a OR b */
 334 int mp_or(mp_int *a, mp_int *b, mp_int *c);
 335
 336 /* c = a AND b */
 337 int mp_and(mp_int *a, mp_int *b, mp_int *c);
 338
 339 /* ---> Basic arithmetic <--- */
 340
 341 /* b = -a */
 342 int mp_neg(mp_int *a, mp_int *b);
 343
 344 /* b = |a| */
 345 int mp_abs(const mp_int *a, mp_int *b);
 346
 347 /* compare a to b */
 348 int mp_cmp(const mp_int *a, const mp_int *b);
 349
 350 /* compare |a| to |b| */
 351 int mp_cmp_mag(const mp_int *a, const mp_int *b);
 352
 353 /* c = a + b */
 354 int mp_add(mp_int *a, mp_int *b, mp_int *c);
 355
 356 /* c = a - b */
 357 int mp_sub(mp_int *a, mp_int *b, mp_int *c);
 358
 359 /* c = a * b */
 360 int mp_mul(const mp_int *a, const mp_int *b, mp_int *c);
 361
 362 /* b = a*a  */
 363 int mp_sqr(const mp_int *a, mp_int *b);
 364
 365 /* a/b => cb + d == a */
 366 int mp_div(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
 367
 368 /* c = a mod b, 0 <= c < b  */
 369 int mp_mod(const mp_int *a, mp_int *b, mp_int *c);
 370
 371 /* ---> single digit functions <--- */
 372
 373 /* compare against a single digit */
 374 int mp_cmp_d(const mp_int *a, mp_digit b);
 375
 376 /* c = a + b */
 377 int mp_add_d(mp_int *a, mp_digit b, mp_int *c);
 378
 379 /* c = a - b */
 380 int mp_sub_d(mp_int *a, mp_digit b, mp_int *c);
 381
 382 /* c = a * b */
 383 int mp_mul_d(const mp_int *a, mp_digit b, mp_int *c);
 384
 385 /* a/b => cb + d == a */
 386 int mp_div_d(const mp_int *a, mp_digit b, mp_int *c, mp_digit *d);
 387
 388 /* a/3 => 3c + d == a */
 389 int mp_div_3(mp_int *a, mp_int *c, mp_digit *d);
 390
 391 /* c = a**b */
 392 int mp_expt_d(mp_int *a, mp_digit b, mp_int *c);
 393
 394 /* c = a mod b, 0 <= c < b  */
 395 int mp_mod_d(const mp_int *a, mp_digit b, mp_digit *c);
 396
 397 /* ---> number theory <--- */
 398
 399 /* d = a + b (mod c) */
 400 int mp_addmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
 401
 402 /* d = a - b (mod c) */
 403 int mp_submod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
 404
 405 /* d = a * b (mod c) */
 406 int mp_mulmod(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
 407
 408 /* c = a * a (mod b) */
 409 int mp_sqrmod(const mp_int *a, mp_int *b, mp_int *c);
 410
 411 /* c = 1/a (mod b) */
 412 int mp_invmod(const mp_int *a, mp_int *b, mp_int *c);
 413
 414 /* c = (a, b) */
 415 int mp_gcd(const mp_int *a, const mp_int *b, mp_int *c);
 416
 417 /* produces value such that U1*a + U2*b = U3 */
 418 int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3);
 419
 420 /* c = [a, b] or (a*b)/(a, b) */
 421 int mp_lcm(const mp_int *a, const mp_int *b, mp_int *c);
 422
 423 /* finds one of the b'th root of a, such that |c|**b <= |a|
 424  *
 425  * returns error if a < 0 and b is even
 426  */
 427 int mp_n_root(mp_int *a, mp_digit b, mp_int *c);
 428
 429 /* special sqrt algo */
 430 int mp_sqrt(mp_int *arg, mp_int *ret);
 431
 432 /* is number a square? */
 433 int mp_is_square(mp_int *arg, int *ret);
 434
 435 /* computes the jacobi c = (a | n) (or Legendre if b is prime)  */
 436 int mp_jacobi(mp_int *a, mp_int *n, int *c);
 437
 438 /* used to setup the Barrett reduction for a given modulus b */
 439 int mp_reduce_setup(mp_int *a, const mp_int *b);
 440
 441 /* Barrett Reduction, computes a (mod b) with a precomputed value c
 442  *
 443  * Assumes that 0 < a <= b*b, note if 0 > a > -(b*b) then you can merely
 444  * compute the reduction as -1 * mp_reduce(mp_abs(a)) [pseudo code].
 445  */
 446 int mp_reduce(mp_int *a, const mp_int *b, const mp_int *c);
 447
 448 /* setups the montgomery reduction */
 449 int mp_montgomery_setup(const mp_int *a, mp_digit *mp);
 450
 451 /* computes a = B**n mod b without division or multiplication useful for
 452  * normalizing numbers in a Montgomery system.
 453  */
 454 int mp_montgomery_calc_normalization(mp_int *a, const mp_int *b);
 455
 456 /* computes x/R == x (mod N) via Montgomery Reduction */
 457 int mp_montgomery_reduce(mp_int *a, const mp_int *m, mp_digit mp);
 458
 459 /* returns 1 if a is a valid DR modulus */
 460 int mp_dr_is_modulus(mp_int *a);
 461
 462 /* sets the value of "d" required for mp_dr_reduce */
 463 void mp_dr_setup(const mp_int *a, mp_digit *d);
 464
 465 /* reduces a modulo b using the Diminished Radix method */
 466 int mp_dr_reduce(mp_int *a, const mp_int *b, mp_digit mp);
 467
 468 /* returns true if a can be reduced with mp_reduce_2k */
 469 int mp_reduce_is_2k(mp_int *a);
 470
 471 /* determines k value for 2k reduction */
 472 int mp_reduce_2k_setup(const mp_int *a, mp_digit *d);
 473
 474 /* reduces a modulo b where b is of the form 2**p - k [0 <= a] */
 475 int mp_reduce_2k(mp_int *a, const mp_int *n, mp_digit d);
 476
 477 /* d = a**b (mod c) */
 478 int mp_exptmod(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
 479
 480 /* ---> Primes <--- */
 481
 482 /* number of primes */
 483 #define PRIME_SIZE      256
 484
 485 /* result=1 if a is divisible by one of the first PRIME_SIZE primes */
 486 int mp_prime_is_divisible(const mp_int *a, int *result);
 487
 488 /* performs one Fermat test of "a" using base "b".
 489  * Sets result to 0 if composite or 1 if probable prime
 490  */
 491 int mp_prime_fermat(mp_int *a, mp_int *b, int *result);
 492
 493 /* performs one Miller-Rabin test of "a" using base "b".
 494  * Sets result to 0 if composite or 1 if probable prime
 495  */
 496 int mp_prime_miller_rabin(mp_int *a, const mp_int *b, int *result);
 497
 498 /* This gives [for a given bit size] the number of trials required
 499  * such that Miller-Rabin gives a prob of failure lower than 2^-96
 500  */
 501 int mp_prime_rabin_miller_trials(int size);
 502
 503 /* performs t rounds of Miller-Rabin on "a" using the first
 504  * t prime bases.  Also performs an initial sieve of trial
 505  * division.  Determines if "a" is prime with probability
 506  * of error no more than (1/4)**t.
 507  *
 508  * Sets result to 1 if probably prime, 0 otherwise
 509  */
 510 int mp_prime_is_prime(mp_int *a, int t, int *result);
 511
 512 /* finds the next prime after the number "a" using "t" trials
 513  * of Miller-Rabin.
 514  *
 515  * bbs_style = 1 means the prime must be congruent to 3 mod 4
 516  */
 517 int mp_prime_next_prime(mp_int *a, int t, int bbs_style);
 518
 519 /* makes a truly random prime of a given size (bytes),
 520  * call with bbs = 1 if you want it to be congruent to 3 mod 4
 521  *
 522  * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
 523  * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
 524  * so it can be NULL
 525  *
 526  * The prime generated will be larger than 2^(8*size).
 527  */
 528 #define mp_prime_random(a, t, size, bbs, cb, dat) mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?LTM_PRIME_BBS:0, cb, dat)
 529
 530 /* makes a truly random prime of a given size (bits),
 531  *
 532  * Flags are as follows:
 533  *
 534  *   LTM_PRIME_BBS      - make prime congruent to 3 mod 4
 535  *   LTM_PRIME_SAFE     - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS)
 536  *   LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero
 537  *   LTM_PRIME_2MSB_ON  - make the 2nd highest bit one
 538  *
 539  * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
 540  * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
 541  * so it can be NULL
 542  *
 543  */
 544 int mp_prime_random_ex(mp_int *a, int t, int size, int flags, ltm_prime_callback cb, void *dat);
 545
 546 /* ---> radix conversion <--- */
 547 int mp_count_bits(const mp_int *a);
 548
 549 int mp_unsigned_bin_size(const mp_int *a);
 550 int mp_read_unsigned_bin(mp_int *a, const unsigned char *b, int c);
 551 int mp_to_unsigned_bin(const mp_int *a, unsigned char *b);
 552
 553 int mp_signed_bin_size(const mp_int *a);
 554 int mp_read_signed_bin(mp_int *a, unsigned char *b, int c);
 555 int mp_to_signed_bin(mp_int *a, unsigned char *b);
 556
 557 int mp_read_radix(mp_int *a, char *str, int radix);
 558 int mp_toradix(mp_int *a, char *str, int radix);
 559 int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen);
 560 int mp_radix_size(mp_int *a, int radix, int *size);
 561
 562 int mp_fread(mp_int *a, int radix, FILE *stream);
 563 int mp_fwrite(mp_int *a, int radix, FILE *stream);
 564
 565 #define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
 566 #define mp_raw_size(mp)           mp_signed_bin_size(mp)
 567 #define mp_toraw(mp, str)         mp_to_signed_bin((mp), (str))
 568 #define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
 569 #define mp_mag_size(mp)           mp_unsigned_bin_size(mp)
 570 #define mp_tomag(mp, str)         mp_to_unsigned_bin((mp), (str))
 571
 572 #define mp_tobinary(M, S)  mp_toradix((M), (S), 2)
 573 #define mp_tooctal(M, S)   mp_toradix((M), (S), 8)
 574 #define mp_todecimal(M, S) mp_toradix((M), (S), 10)
 575 #define mp_tohex(M, S)     mp_toradix((M), (S), 16)
 576
 577 /* lowlevel functions, do not call! */
 578 int s_mp_add(mp_int *a, mp_int *b, mp_int *c);
 579 int s_mp_sub(const mp_int *a, const mp_int *b, mp_int *c);
 580 #define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
 581 int fast_s_mp_mul_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);
 582 int s_mp_mul_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);
 583 int fast_s_mp_mul_high_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);
 584 int s_mp_mul_high_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);
 585 int fast_s_mp_sqr(const mp_int *a, mp_int *b);
 586 int s_mp_sqr(const mp_int *a, mp_int *b);
 587 int mp_karatsuba_mul(const mp_int *a, const mp_int *b, mp_int *c);
 588 int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c);
 589 int mp_karatsuba_sqr(const mp_int *a, mp_int *b);
 590 int mp_toom_sqr(mp_int *a, mp_int *b);
 591 int fast_mp_invmod(const mp_int *a, mp_int *b, mp_int *c);
 592 int mp_invmod_slow (const mp_int * a, mp_int * b, mp_int * c);
 593 int fast_mp_montgomery_reduce(mp_int *a, const mp_int *m, mp_digit mp);
 594 int mp_exptmod_fast(const mp_int *G, const mp_int *X, mp_int *P, mp_int *Y, int mode);
 595 int s_mp_exptmod (const mp_int * G, const mp_int * X, mp_int * P, mp_int * Y);
 596 void bn_reverse(unsigned char *s, int len);
 597
 598 extern const char *mp_s_rmap;
 599
 600 #define PK_PRIVATE            0        /* PK private keys */
 601 #define PK_PUBLIC             1        /* PK public keys */
 602
 603 /* Min and Max RSA key sizes (in bits) */
 604 #define MIN_RSA_SIZE 384
 605 #define MAX_RSA_SIZE 16384
 606
 607 typedef struct Rsa_key {
 608     int type;
 609     mp_int e, d, N, p, q, qP, dP, dQ;
 610 } rsa_key;
 611
 612 int rsa_make_key(int size, long e, rsa_key *key);
 613
 614 int rsa_exptmod(const unsigned char *in,   unsigned long inlen,
 615                       unsigned char *out,  unsigned long *outlen, int which,
 616                       rsa_key *key);
 617
 618 void rsa_free(rsa_key *key);
 619
 620 #endif /* __WINE_TOMCRYPT_H_ */