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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] */
42enum {
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))
79typedef 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 */
84typedef 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
99static 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
120typedef struct tag_rc2_key {
121 unsigned xkey[64];
122} rc2_key;
123
124typedef struct tag_des_key {
125 ulong32 ek[32], dk[32];
126} des_key;
127
128typedef struct tag_des3_key {
129 ulong32 ek[3][32], dk[3][32];
130} des3_key;
131
132typedef struct tag_aes_key {
133 ulong32 eK[64], dK[64];
134 int Nr;
135} aes_key;
136
137int rc2_setup(const unsigned char *key, int keylen, int bits, int num_rounds, rc2_key *skey);
138void rc2_ecb_encrypt(const unsigned char *pt, unsigned char *ct, rc2_key *key);
139void rc2_ecb_decrypt(const unsigned char *ct, unsigned char *pt, rc2_key *key);
140
141int des_setup(const unsigned char *key, int keylen, int num_rounds, des_key *skey);
142void des_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const des_key *key);
143void des_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const des_key *key);
144
145int des3_setup(const unsigned char *key, int keylen, int num_rounds, des3_key *skey);
146void des3_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const des3_key *key);
147void des3_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const des3_key *key);
148
149int aes_setup(const unsigned char *key, int keylen, int rounds, aes_key *skey);
150void aes_ecb_encrypt(const unsigned char *pt, unsigned char *ct, aes_key *skey);
151void aes_ecb_decrypt(const unsigned char *ct, unsigned char *pt, aes_key *skey);
152
153typedef struct tag_md2_state {
154 unsigned char chksum[16], X[48], buf[16];
155 unsigned long curlen;
156} md2_state;
157
158int md2_init(md2_state * md);
159int md2_process(md2_state * md, const unsigned char *buf, unsigned long len);
160int md2_done(md2_state * md, unsigned char *hash);
161
162struct rc4_prng {
163 int x, y;
164 unsigned char buf[256];
165};
166
167typedef union Prng_state {
168 struct rc4_prng rc4;
169} prng_state;
170
171int rc4_start(prng_state *prng);
172int rc4_add_entropy(const unsigned char *buf, unsigned long len, prng_state *prng);
173int rc4_ready(prng_state *prng);
174unsigned 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 */
184typedef unsigned long mp_digit;
185typedef 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
214typedef 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 */
225typedef 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] */
231typedef 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 */
236char *mp_error_to_string(int code);
237
238/* init a null terminated series of arguments */
239int mp_init_multi(mp_int *mp, ...);
240
241/* clear a null terminated series of arguments */
242void mp_clear_multi(mp_int *mp, ...);
243
244/* shrink ram required for a bignum */
245int mp_shrink(mp_int *a);
246
247/* ---> Basic Manipulations <--- */
248#define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
249#define mp_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
250#define mp_isodd(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
251
252/* set a 32-bit const */
253int mp_set_int(mp_int *a, unsigned long b);
254
255/* get a 32-bit value */
256unsigned long mp_get_int(const mp_int * a);
257
258/* initialize and set a digit */
259int mp_init_set (mp_int * a, mp_digit b);
260
261/* initialize and set 32-bit value */
262int mp_init_set_int (mp_int * a, unsigned long b);
263
264/* copy, b = a */
265int mp_copy(const mp_int *a, mp_int *b);
266
267/* inits and copies, a = b */
268int mp_init_copy(mp_int *a, const mp_int *b);
269
270/* ---> digit manipulation <--- */
271
272/* I Love Earth! */
273
274/* makes a pseudo-random int of a given size */
275int mp_rand(mp_int *a, int digits);
276
277/* ---> binary operations <--- */
278/* c = a XOR b */
279int mp_xor(mp_int *a, mp_int *b, mp_int *c);
280
281/* c = a OR b */
282int mp_or(mp_int *a, mp_int *b, mp_int *c);
283
284/* c = a AND b */
285int mp_and(mp_int *a, mp_int *b, mp_int *c);
286
287/* ---> Basic arithmetic <--- */
288
289/* b = -a */
290int mp_neg(mp_int *a, mp_int *b);
291
292/* compare a to b */
293int mp_cmp(const mp_int *a, const mp_int *b);
294
295/* c = a + b */
296int mp_add(mp_int *a, mp_int *b, mp_int *c);
297
298/* c = a - b */
299int mp_sub(mp_int *a, mp_int *b, mp_int *c);
300
301/* c = a * b */
302int mp_mul(const mp_int *a, const mp_int *b, mp_int *c);
303
304/* c = a mod b, 0 <= c < b */
305int mp_mod(const mp_int *a, mp_int *b, mp_int *c);
306
307/* ---> single digit functions <--- */
308
309/* compare against a single digit */
310int mp_cmp_d(const mp_int *a, mp_digit b);
311
312/* c = a - b */
313int mp_sub_d(mp_int *a, mp_digit b, mp_int *c);
314
315/* a/3 => 3c + d == a */
316int mp_div_3(mp_int *a, mp_int *c, mp_digit *d);
317
318/* c = a**b */
319int mp_expt_d(mp_int *a, mp_digit b, mp_int *c);
320
321/* ---> number theory <--- */
322
323/* d = a + b (mod c) */
324int mp_addmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
325
326/* d = a - b (mod c) */
327int mp_submod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
328
329/* d = a * b (mod c) */
330int mp_mulmod(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
331
332/* c = 1/a (mod b) */
333int mp_invmod(const mp_int *a, mp_int *b, mp_int *c);
334
335/* c = (a, b) */
336int mp_gcd(const mp_int *a, const mp_int *b, mp_int *c);
337
338/* produces value such that U1*a + U2*b = U3 */
339int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3);
340
341/* c = [a, b] or (a*b)/(a, b) */
342int mp_lcm(const mp_int *a, const mp_int *b, mp_int *c);
343
344/* finds one of the b'th root of a, such that |c|**b <= |a|
345 *
346 * returns error if a < 0 and b is even
347 */
348int mp_n_root(mp_int *a, mp_digit b, mp_int *c);
349
350/* special sqrt algo */
351int mp_sqrt(mp_int *arg, mp_int *ret);
352
353/* is number a square? */
354int mp_is_square(mp_int *arg, int *ret);
355
356/* computes the jacobi c = (a | n) (or Legendre if b is prime) */
357int mp_jacobi(mp_int *a, mp_int *n, int *c);
358
359/* returns 1 if a is a valid DR modulus */
360int mp_dr_is_modulus(mp_int *a);
361
362/* returns true if a can be reduced with mp_reduce_2k */
363int mp_reduce_is_2k(mp_int *a);
364
365/* d = a**b (mod c) */
366int mp_exptmod(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d);
367
368/* ---> Primes <--- */
369
370/* number of primes */
371#define PRIME_SIZE 256
372
373/* performs one Fermat test of "a" using base "b".
374 * Sets result to 0 if composite or 1 if probable prime
375 */
376int mp_prime_fermat(mp_int *a, mp_int *b, int *result);
377
378/* This gives [for a given bit size] the number of trials required
379 * such that Miller-Rabin gives a prob of failure lower than 2^-96
380 */
381int mp_prime_rabin_miller_trials(int size);
382
383/* finds the next prime after the number "a" using "t" trials
384 * of Miller-Rabin.
385 *
386 * bbs_style = 1 means the prime must be congruent to 3 mod 4
387 */
388int mp_prime_next_prime(mp_int *a, int t, int bbs_style);
389
390/* makes a truly random prime of a given size (bytes),
391 * call with bbs = 1 if you want it to be congruent to 3 mod 4
392 *
393 * You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can
394 * have passed to the callback (e.g. a state or something). This function doesn't use "dat" itself
395 * so it can be NULL
396 *
397 * The prime generated will be larger than 2^(8*size).
398 */
399#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)
400
401/* makes a truly random prime of a given size (bits),
402 *
403 * Flags are as follows:
404 *
405 * LTM_PRIME_BBS - make prime congruent to 3 mod 4
406 * LTM_PRIME_SAFE - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS)
407 * LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero
408 * LTM_PRIME_2MSB_ON - make the 2nd highest bit one
409 *
410 * You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can
411 * have passed to the callback (e.g. a state or something). This function doesn't use "dat" itself
412 * so it can be NULL
413 *
414 */
415int mp_prime_random_ex(mp_int *a, int t, int size, int flags, ltm_prime_callback cb, void *dat);
416
417/* ---> radix conversion <--- */
418int mp_count_bits(const mp_int *a);
419
420int mp_unsigned_bin_size(const mp_int *a);
421int mp_read_unsigned_bin(mp_int *a, const unsigned char *b, int c);
422int mp_to_unsigned_bin(const mp_int *a, unsigned char *b);
423
424int mp_read_signed_bin(mp_int *a, unsigned char *b, int c);
425int mp_to_signed_bin(mp_int *a, unsigned char *b);
426
427int mp_read_radix(mp_int *a, char *str, int radix);
428int mp_toradix(mp_int *a, char *str, int radix);
429int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen);
430int mp_radix_size(mp_int *a, int radix, int *size);
431
432int mp_fread(mp_int *a, int radix, FILE *stream);
433int mp_fwrite(mp_int *a, int radix, FILE *stream);
434
435#define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
436#define mp_raw_size(mp) mp_signed_bin_size(mp)
437#define mp_toraw(mp, str) mp_to_signed_bin((mp), (str))
438#define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
439#define mp_mag_size(mp) mp_unsigned_bin_size(mp)
440#define mp_tomag(mp, str) mp_to_unsigned_bin((mp), (str))
441
442#define mp_tobinary(M, S) mp_toradix((M), (S), 2)
443#define mp_tooctal(M, S) mp_toradix((M), (S), 8)
444#define mp_todecimal(M, S) mp_toradix((M), (S), 10)
445#define mp_tohex(M, S) mp_toradix((M), (S), 16)
446
447extern const char *mp_s_rmap;
448
449#define PK_PRIVATE 0 /* PK private keys */
450#define PK_PUBLIC 1 /* PK public keys */
451
452/* Min and Max RSA key sizes (in bits) */
453#define MIN_RSA_SIZE 384
454#define MAX_RSA_SIZE 16384
455
456typedef struct Rsa_key {
457 int type;
458 mp_int e, d, N, p, q, qP, dP, dQ;
459} rsa_key;
460
461int rsa_make_key(int size, long e, rsa_key *key);
462
463int rsa_exptmod(const unsigned char *in, unsigned long inlen,
464 unsigned char *out, unsigned long *outlen, int which,
465 rsa_key *key);
466
467void rsa_free(rsa_key *key);
468
469#endif /* __WINE_TOMCRYPT_H_ */