dlls/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 struct rc4_prng {
 154     int x, y;
 155     unsigned char buf[256];
 156 };
 157
 158 typedef union Prng_state {
 159     struct rc4_prng       rc4;
 160 } prng_state;
 161
 162 int rc4_start(prng_state *prng);
 163 int rc4_add_entropy(const unsigned char *buf, unsigned long len, prng_state *prng);
 164 int rc4_ready(prng_state *prng);
 165 unsigned long rc4_read(unsigned char *buf, unsigned long len, prng_state *prng);
 166
 167 /* some default configurations.
 168  *
 169  * A "mp_digit" must be able to hold DIGIT_BIT + 1 bits
 170  * A "mp_word" must be able to hold 2*DIGIT_BIT + 1 bits
 171  *
 172  * At the very least a mp_digit must be able to hold 7 bits
 173  * [any size beyond that is ok provided it doesn't overflow the data type]
 174  */
 175 typedef unsigned long      mp_digit;
 176 typedef ulong64            mp_word;
 177 #define DIGIT_BIT 28
 178
 179 #define MP_DIGIT_BIT     DIGIT_BIT
 180 #define MP_MASK          ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1))
 181 #define MP_DIGIT_MAX     MP_MASK
 182
 183 /* equalities */
 184 #define MP_LT        -1   /* less than */
 185 #define MP_EQ         0   /* equal to */
 186 #define MP_GT         1   /* greater than */
 187
 188 #define MP_ZPOS       0   /* positive integer */
 189 #define MP_NEG        1   /* negative */
 190
 191 #define MP_OKAY       0   /* ok result */
 192 #define MP_MEM        -2  /* out of mem */
 193 #define MP_VAL        -3  /* invalid input */
 194 #define MP_RANGE      MP_VAL
 195
 196 #define MP_YES        1   /* yes response */
 197 #define MP_NO         0   /* no response */
 198
 199 /* Primality generation flags */
 200 #define LTM_PRIME_BBS      0x0001 /* BBS style prime */
 201 #define LTM_PRIME_SAFE     0x0002 /* Safe prime (p-1)/2 == prime */
 202 #define LTM_PRIME_2MSB_OFF 0x0004 /* force 2nd MSB to 0 */
 203 #define LTM_PRIME_2MSB_ON  0x0008 /* force 2nd MSB to 1 */
 204
 205 typedef int           mp_err;
 206
 207 /* define this to use lower memory usage routines (exptmods mostly) */
 208 /* #define MP_LOW_MEM */
 209
 210 #define MP_PREC                 64     /* default digits of precision */
 211
 212 /* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - BITS_PER_DIGIT*2) */
 213 #define MP_WARRAY               (1 << (sizeof(mp_word) * CHAR_BIT - 2 * DIGIT_BIT + 1))
 214
 215 /* the infamous mp_int structure */
 216 typedef struct  {
 217     int used, alloc, sign;
 218     mp_digit *dp;
 219 } mp_int;
 220
 221 /* callback for mp_prime_random, should fill dst with random bytes and return how many read [up to len] */
 222 typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
 223
 224 #define DIGIT(m,k) ((m)->dp[(k)])
 225
 226 /* error code to char* string */
 227 char *mp_error_to_string(int code);
 228
 229 /* init a null terminated series of arguments */
 230 int mp_init_multi(mp_int *mp, ...);
 231
 232 /* clear a null terminated series of arguments */
 233 void mp_clear_multi(mp_int *mp, ...);
 234
 235 /* shrink ram required for a bignum */
 236 int mp_shrink(mp_int *a);
 237
 238 /* ---> Basic Manipulations <--- */
 239 #define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
 240 #define mp_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
 241 #define mp_isodd(a)  (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
 242
 243 /* set a 32-bit const */
 244 int mp_set_int(mp_int *a, unsigned long b);
 245
 246 /* get a 32-bit value */
 247 unsigned long mp_get_int(const mp_int * a);
 248
 249 /* initialize and set a digit */
 250 int mp_init_set (mp_int * a, mp_digit b);
 251
 252 /* initialize and set 32-bit value */
 253 int mp_init_set_int (mp_int * a, unsigned long b);
 254
 255 /* copy, b = a */
 256 int mp_copy(const mp_int *a, mp_int *b);
 257
 258 /* inits and copies, a = b */
 259 int mp_init_copy(mp_int *a, const mp_int *b);
 260
 261 /* ---> digit manipulation <--- */
 262
 263 /* I Love Earth! */
 264
 265 /* makes a pseudo-random int of a given size */
 266 int mp_rand(mp_int *a, int digits);
 267
 268 /* ---> binary operations <--- */
 269 /* c = a XOR b  */
 270 int mp_xor(mp_int *a, mp_int *b, mp_int *c);
 271
 272 /* c = a OR b */
 273 int mp_or(mp_int *a, mp_int *b, mp_int *c);
 274
 275 /* c = a AND b */
 276 int mp_and(mp_int *a, mp_int *b, mp_int *c);
 277
 278 /* ---> Basic arithmetic <--- */
 279
 280 /* b = -a */
 281 int mp_neg(mp_int *a, mp_int *b);
 282
 283 /* compare a to b */
 284 int mp_cmp(const mp_int *a, const mp_int *b);
 285
 286 /* c = a + b */
 287 int mp_add(mp_int *a, mp_int *b, mp_int *c);
 288
 289 /* c = a - b */
 290 int mp_sub(mp_int *a, mp_int *b, mp_int *c);
 291
 292 /* c = a * b */
 293 int mp_mul(const mp_int *a, const mp_int *b, mp_int *c);
 294
 295 /* c = a mod b, 0 <= c < b  */
 296 int mp_mod(const mp_int *a, mp_int *b, mp_int *c);
 297
 298 /* ---> single digit functions <--- */
 299
 300 /* compare against a single digit */
 301 int mp_cmp_d(const mp_int *a, mp_digit b);
 302
 303 /* c = a - b */
 304 int mp_sub_d(mp_int *a, mp_digit b, mp_int *c);
 305
 306 /* a/3 => 3c + d == a */
 307 int mp_div_3(mp_int *a, mp_int *c, mp_digit *d);
 308
 309 /* c = a**b */
 310 int mp_expt_d(mp_int *a, mp_digit b, mp_int *c);
 311
 312 /* ---> number theory <--- */
 313
 314 /* d = a + b (mod c) */
 315 int mp_addmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
 316
 317 /* d = a - b (mod c) */
 318 int mp_submod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
 319
 320 /* d = a * b (mod c) */
 321 int mp_mulmod(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
 322
 323 /* c = 1/a (mod b) */
 324 int mp_invmod(const mp_int *a, mp_int *b, mp_int *c);
 325
 326 /* c = (a, b) */
 327 int mp_gcd(const mp_int *a, const mp_int *b, mp_int *c);
 328
 329 /* produces value such that U1*a + U2*b = U3 */
 330 int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3);
 331
 332 /* c = [a, b] or (a*b)/(a, b) */
 333 int mp_lcm(const mp_int *a, const mp_int *b, mp_int *c);
 334
 335 /* finds one of the b'th root of a, such that |c|**b <= |a|
 336  *
 337  * returns error if a < 0 and b is even
 338  */
 339 int mp_n_root(mp_int *a, mp_digit b, mp_int *c);
 340
 341 /* special sqrt algo */
 342 int mp_sqrt(mp_int *arg, mp_int *ret);
 343
 344 /* is number a square? */
 345 int mp_is_square(mp_int *arg, int *ret);
 346
 347 /* computes the jacobi c = (a | n) (or Legendre if b is prime)  */
 348 int mp_jacobi(mp_int *a, mp_int *n, int *c);
 349
 350 /* returns 1 if a is a valid DR modulus */
 351 int mp_dr_is_modulus(mp_int *a);
 352
 353 /* returns true if a can be reduced with mp_reduce_2k */
 354 int mp_reduce_is_2k(mp_int *a);
 355
 356 /* d = a**b (mod c) */
 357 int mp_exptmod(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
 358
 359 /* ---> Primes <--- */
 360
 361 /* number of primes */
 362 #define PRIME_SIZE      256
 363
 364 /* performs one Fermat test of "a" using base "b".
 365  * Sets result to 0 if composite or 1 if probable prime
 366  */
 367 int mp_prime_fermat(mp_int *a, mp_int *b, int *result);
 368
 369 /* This gives [for a given bit size] the number of trials required
 370  * such that Miller-Rabin gives a prob of failure lower than 2^-96
 371  */
 372 int mp_prime_rabin_miller_trials(int size);
 373
 374 /* finds the next prime after the number "a" using "t" trials
 375  * of Miller-Rabin.
 376  *
 377  * bbs_style = 1 means the prime must be congruent to 3 mod 4
 378  */
 379 int mp_prime_next_prime(mp_int *a, int t, int bbs_style);
 380
 381 /* makes a truly random prime of a given size (bytes),
 382  * call with bbs = 1 if you want it to be congruent to 3 mod 4
 383  *
 384  * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
 385  * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
 386  * so it can be NULL
 387  *
 388  * The prime generated will be larger than 2^(8*size).
 389  */
 390 #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)
 391
 392 /* makes a truly random prime of a given size (bits),
 393  *
 394  * Flags are as follows:
 395  *
 396  *   LTM_PRIME_BBS      - make prime congruent to 3 mod 4
 397  *   LTM_PRIME_SAFE     - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS)
 398  *   LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero
 399  *   LTM_PRIME_2MSB_ON  - make the 2nd highest bit one
 400  *
 401  * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
 402  * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
 403  * so it can be NULL
 404  *
 405  */
 406 int mp_prime_random_ex(mp_int *a, int t, int size, int flags, ltm_prime_callback cb, void *dat);
 407
 408 /* ---> radix conversion <--- */
 409 int mp_count_bits(const mp_int *a);
 410
 411 int mp_unsigned_bin_size(const mp_int *a);
 412 int mp_read_unsigned_bin(mp_int *a, const unsigned char *b, int c);
 413 int mp_to_unsigned_bin(const mp_int *a, unsigned char *b);
 414
 415 int mp_read_signed_bin(mp_int *a, unsigned char *b, int c);
 416 int mp_to_signed_bin(mp_int *a, unsigned char *b);
 417
 418 int mp_read_radix(mp_int *a, char *str, int radix);
 419 int mp_toradix(mp_int *a, char *str, int radix);
 420 int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen);
 421 int mp_radix_size(mp_int *a, int radix, int *size);
 422
 423 int mp_fread(mp_int *a, int radix, FILE *stream);
 424 int mp_fwrite(mp_int *a, int radix, FILE *stream);
 425
 426 #define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
 427 #define mp_raw_size(mp)           mp_signed_bin_size(mp)
 428 #define mp_toraw(mp, str)         mp_to_signed_bin((mp), (str))
 429 #define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
 430 #define mp_mag_size(mp)           mp_unsigned_bin_size(mp)
 431 #define mp_tomag(mp, str)         mp_to_unsigned_bin((mp), (str))
 432
 433 #define mp_tobinary(M, S)  mp_toradix((M), (S), 2)
 434 #define mp_tooctal(M, S)   mp_toradix((M), (S), 8)
 435 #define mp_todecimal(M, S) mp_toradix((M), (S), 10)
 436 #define mp_tohex(M, S)     mp_toradix((M), (S), 16)
 437
 438 extern const char *mp_s_rmap;
 439
 440 #define PK_PRIVATE            0        /* PK private keys */
 441 #define PK_PUBLIC             1        /* PK public keys */
 442
 443 /* Min and Max RSA key sizes (in bits) */
 444 #define MIN_RSA_SIZE 384
 445 #define MAX_RSA_SIZE 16384
 446
 447 typedef struct Rsa_key {
 448     int type;
 449     mp_int e, d, N, p, q, qP, dP, dQ;
 450 } rsa_key;
 451
 452 int rsa_make_key(int size, long e, rsa_key *key);
 453
 454 int rsa_exptmod(const unsigned char *in,   unsigned long inlen,
 455                       unsigned char *out,  unsigned long *outlen, int which,
 456                       rsa_key *key);
 457
 458 void rsa_free(rsa_key *key);
 459
 460 #endif /* __WINE_TOMCRYPT_H_ */