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Import of old SSLeay release: SSLeay 0.9.1b (unreleased)
[thirdparty/openssl.git] / crypto / bn / bn.h
CommitLineData
d02b48c6
RE		 1/* crypto/bn/bn.org */
2/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
60 *
61 * Always modify bn.org since bn.h is automatically generated from
62 * it during SSLeay configuration.
63 *
64 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
65 */
66
67#ifndef HEADER_BN_H
68#define HEADER_BN_H
69
70#ifdef __cplusplus
71extern "C" {
72#endif
73
74#undef BN_LLONG
75
76#ifdef WIN32
77#define BN_LLONG /* This comment stops Configure mutilating things */
78#endif
79
dfeab068
RE		 80#define BN_MUL_COMBA
81#define BN_SQR_COMBA
82#undef BN_RECURSION
d02b48c6
RE		 83#define RECP_MUL_MOD
84#define MONT_MUL_MOD
85
86/* This next option uses the C libraries (2 word)/(1 word) function.
87 * If it is not defined, I use my C version (which is slower).
88 * The reason for this flag is that when the particular C compiler
89 * library routine is used, and the library is linked with a different
90 * compiler, the library is missing. This mostly happens when the
91 * library is built with gcc and then linked using nornal cc. This would
92 * be a common occurance because gcc normally produces code that is
93 * 2 times faster than system compilers for the big number stuff.
94 * For machines with only one compiler (or shared libraries), this should
95 * be on. Again this in only really a problem on machines
96 * using "long long's", are 32bit, and are not using my assember code. */
97#if defined(MSDOS) || defined(WINDOWS) || defined(linux)
98#define BN_DIV2W
99#endif
100
101/* Only one for the following should be defined */
102/* The prime number generation stuff may not work when
103 * EIGHT_BIT but I don't care since I've only used this mode
104 * for debuging the bignum libraries */
105#undef SIXTY_FOUR_BIT_LONG
106#undef SIXTY_FOUR_BIT
107#define THIRTY_TWO_BIT
108#undef SIXTEEN_BIT
109#undef EIGHT_BIT
110
dfeab068 111
d02b48c6
RE		 112/* assuming long is 64bit - this is the DEC Alpha
113 * unsigned long long is only 64 bits :-(, don't define
114 * BN_LLONG for the DEC Alpha */
115#ifdef SIXTY_FOUR_BIT_LONG
116#define BN_ULLONG unsigned long long
117#define BN_ULONG unsigned long
118#define BN_LONG long
119#define BN_BITS 128
120#define BN_BYTES 8
121#define BN_BITS2 64
122#define BN_BITS4 32
dfeab068 123#define BN_MASK (0xffffffffffffffffffffffffffffffffLL)
d02b48c6
RE		 124#define BN_MASK2 (0xffffffffffffffffL)
125#define BN_MASK2l (0xffffffffL)
126#define BN_MASK2h (0xffffffff00000000L)
127#define BN_MASK2h1 (0xffffffff80000000L)
128#define BN_TBIT (0x8000000000000000L)
dfeab068 129#define BN_DEC_CONV (10000000000000000000UL)
58964a49
RE		 130#define BN_DEC_FMT1 "%lu"
131#define BN_DEC_FMT2 "%019lu"
132#define BN_DEC_NUM 19
d02b48c6
RE		 133#endif
134
dfeab068
RE		 135/* This is where the long long data type is 64 bits, but long is 32.
136 * For machines where there are 64bit registers, this is the mode to use.
137 * IRIX, on R4000 and above should use this mode, along with the relevent
138 * assember code :-). Do NOT define BN_ULLONG.
139 */
d02b48c6
RE		 140#ifdef SIXTY_FOUR_BIT
141#undef BN_LLONG
142/* #define BN_ULLONG unsigned long long */
143#define BN_ULONG unsigned long long
144#define BN_LONG long long
145#define BN_BITS 128
146#define BN_BYTES 8
147#define BN_BITS2 64
148#define BN_BITS4 32
149#define BN_MASK2 (0xffffffffffffffffLL)
150#define BN_MASK2l (0xffffffffL)
151#define BN_MASK2h (0xffffffff00000000LL)
152#define BN_MASK2h1 (0xffffffff80000000LL)
153#define BN_TBIT (0x8000000000000000LL)
dfeab068
RE		 154#define BN_DEC_CONV (10000000000000000000LL)
155#define BN_DEC_FMT1 "%llu"
156#define BN_DEC_FMT2 "%019llu"
58964a49 157#define BN_DEC_NUM 19
d02b48c6
RE		 158#endif
159
160#ifdef THIRTY_TWO_BIT
161#ifdef WIN32
162#define BN_ULLONG unsigned _int64
163#else
164#define BN_ULLONG unsigned long long
165#endif
166#define BN_ULONG unsigned long
167#define BN_LONG long
168#define BN_BITS 64
169#define BN_BYTES 4
170#define BN_BITS2 32
171#define BN_BITS4 16
dfeab068 172#define BN_MASK (0xffffffffffffffffLL)
d02b48c6
RE		 173#define BN_MASK2 (0xffffffffL)
174#define BN_MASK2l (0xffff)
175#define BN_MASK2h1 (0xffff8000L)
176#define BN_MASK2h (0xffff0000L)
177#define BN_TBIT (0x80000000L)
58964a49
RE		 178#define BN_DEC_CONV (1000000000L)
179#define BN_DEC_FMT1 "%lu"
180#define BN_DEC_FMT2 "%09lu"
181#define BN_DEC_NUM 9
d02b48c6
RE		 182#endif
183
184#ifdef SIXTEEN_BIT
185#ifndef BN_DIV2W
186#define BN_DIV2W
187#endif
188#define BN_ULLONG unsigned long
189#define BN_ULONG unsigned short
190#define BN_LONG short
191#define BN_BITS 32
192#define BN_BYTES 2
193#define BN_BITS2 16
194#define BN_BITS4 8
dfeab068 195#define BN_MASK (0xffffffff)
d02b48c6
RE		 196#define BN_MASK2 (0xffff)
197#define BN_MASK2l (0xff)
198#define BN_MASK2h1 (0xff80)
199#define BN_MASK2h (0xff00)
200#define BN_TBIT (0x8000)
58964a49
RE		 201#define BN_DEC_CONV (100000)
202#define BN_DEC_FMT1 "%u"
203#define BN_DEC_FMT2 "%05u"
204#define BN_DEC_NUM 5
d02b48c6
RE		 205#endif
206
207#ifdef EIGHT_BIT
208#ifndef BN_DIV2W
209#define BN_DIV2W
210#endif
211#define BN_ULLONG unsigned short
212#define BN_ULONG unsigned char
213#define BN_LONG char
214#define BN_BITS 16
215#define BN_BYTES 1
216#define BN_BITS2 8
217#define BN_BITS4 4
dfeab068 218#define BN_MASK (0xffff)
d02b48c6
RE		 219#define BN_MASK2 (0xff)
220#define BN_MASK2l (0xf)
221#define BN_MASK2h1 (0xf8)
222#define BN_MASK2h (0xf0)
223#define BN_TBIT (0x80)
58964a49
RE		 224#define BN_DEC_CONV (100)
225#define BN_DEC_FMT1 "%u"
226#define BN_DEC_FMT2 "%02u"
227#define BN_DEC_NUM 2
d02b48c6
RE		 228#endif
229
230#define BN_DEFAULT_BITS 1280
231
232#ifdef BIGNUM
233#undef BIGNUM
234#endif
235
dfeab068
RE		 236#define BN_FLG_MALLOCED 0x01
237#define BN_FLG_STATIC_DATA 0x02
238#define BN_FLG_FREE 0x8000 /* used for debuging */
239#define BN_set_flags(b,n) ((b)->flags|=(n))
240#define BN_get_flags(b,n) ((b)->flags&(n))
241
d02b48c6
RE		 242typedef struct bignum_st
243 {
244 BN_ULONG *d; /* Pointer to an array of 'BN_BITS2' bit chunks. */
245 int top; /* Index of last used d +1. */
246 /* The next are internal book keeping for bn_expand. */
247 int max; /* Size of the d array. */
248 int neg; /* one if the number is negative */
dfeab068 249 int flags;
d02b48c6
RE		 250 } BIGNUM;
251
252/* Used for temp variables */
253#define BN_CTX_NUM 12
254typedef struct bignum_ctx
255 {
256 int tos;
dfeab068
RE		 257 BIGNUM bn[BN_CTX_NUM+1];
258 int flags;
d02b48c6
RE		 259 } BN_CTX;
260
58964a49
RE		 261typedef struct bn_blinding_st
262 {
263 int init;
264 BIGNUM *A;
265 BIGNUM *Ai;
266 BIGNUM *mod; /* just a reference */
267 } BN_BLINDING;
268
d02b48c6
RE		 269/* Used for montgomery multiplication */
270typedef struct bn_mont_ctx_st
271 {
dfeab068 272 int use_word; /* 0 for word form, 1 for long form */
d02b48c6 273 int ri; /* number of bits in R */
dfeab068
RE		 274 BIGNUM RR; /* used to convert to montgomery form */
275 BIGNUM N; /* The modulus */
276 BIGNUM Ni; /* The inverse of N */
d02b48c6
RE		 277 BN_ULONG n0; /* word form of inverse, normally only one of
278 * Ni or n0 is defined */
dfeab068 279 int flags;
d02b48c6
RE		 280 } BN_MONT_CTX;
281
dfeab068
RE		 282/* Used for reciprocal division/mod functions
283 * It cannot be shared between threads
284 */
285typedef struct bn_recp_ctx_st
286 {
287 BIGNUM N; /* the divisor */
288 BIGNUM Nr; /* the reciprocal */
289 int num_bits;
290 int shift;
291 int flags;
292 } BN_RECP_CTX;
293
d02b48c6 294#define BN_to_montgomery(r,a,mont,ctx) BN_mod_mul_montgomery(\
dfeab068 295 r,a,&((mont)->RR),(mont),ctx)
d02b48c6
RE		 296
297#define BN_prime_checks (5)
298
299#define BN_num_bytes(a) ((BN_num_bits(a)+7)/8)
300#define BN_is_word(a,w) (((a)->top == 1) && ((a)->d[0] == (BN_ULONG)(w)))
dfeab068 301#define BN_is_zero(a) (((a)->top == 0) || BN_is_word(a,0))
d02b48c6 302#define BN_is_one(a) (BN_is_word((a),1))
dfeab068 303#define BN_is_odd(a) (((a)->top > 0) && ((a)->d[0] & 1))
d02b48c6
RE		 304#define BN_one(a) (BN_set_word((a),1))
305#define BN_zero(a) (BN_set_word((a),0))
306
dfeab068
RE		 307/*#define BN_ascii2bn(a) BN_hex2bn(a) */
308/*#define BN_bn2ascii(a) BN_bn2hex(a) */
d02b48c6 309
dfeab068
RE		 310#define bn_expand(n,b) ((((((b+BN_BITS2-1))/BN_BITS2)) <= (n)->max)?\
311 (n):bn_expand2((n),(b)/BN_BITS2+1))
58964a49 312#define bn_wexpand(n,b) (((b) <= (n)->max)?(n):bn_expand2((n),(b)))
d02b48c6 313
dfeab068
RE		 314#define bn_fix_top(a) \
315 { \
316 BN_ULONG *ftl; \
317 if ((a)->top > 0) \
318 { \
319 for (ftl= &((a)->d[(a)->top-1]); (a)->top > 0; (a)->top--) \
320 if (*(ftl--)) break; \
321 } \
322 }
d02b48c6
RE		 323
324#ifndef NOPROTO
325BIGNUM *BN_value_one(void);
326char * BN_options(void);
327BN_CTX *BN_CTX_new(void);
dfeab068 328void BN_CTX_init(BN_CTX *c);
d02b48c6
RE		 329void BN_CTX_free(BN_CTX *c);
330int BN_rand(BIGNUM *rnd, int bits, int top,int bottom);
331int BN_num_bits(BIGNUM *a);
332int BN_num_bits_word(BN_ULONG);
333BIGNUM *BN_new(void);
dfeab068 334void BN_init(BIGNUM *);
d02b48c6
RE		 335void BN_clear_free(BIGNUM *a);
336BIGNUM *BN_copy(BIGNUM *a, BIGNUM *b);
337BIGNUM *BN_bin2bn(unsigned char *s,int len,BIGNUM *ret);
338int BN_bn2bin(BIGNUM *a, unsigned char *to);
58964a49
RE		 339BIGNUM *BN_mpi2bn(unsigned char *s,int len,BIGNUM *ret);
340int BN_bn2mpi(BIGNUM *a, unsigned char *to);
d02b48c6 341int BN_sub(BIGNUM *r, BIGNUM *a, BIGNUM *b);
dfeab068
RE		 342int BN_usub(BIGNUM *r, BIGNUM *a, BIGNUM *b);
343int BN_uadd(BIGNUM *r, BIGNUM *a, BIGNUM *b);
d02b48c6
RE		 344int BN_add(BIGNUM *r, BIGNUM *a, BIGNUM *b);
345int BN_mod(BIGNUM *rem, BIGNUM *m, BIGNUM *d, BN_CTX *ctx);
346int BN_div(BIGNUM *dv, BIGNUM *rem, BIGNUM *m, BIGNUM *d, BN_CTX *ctx);
dfeab068 347int BN_mul(BIGNUM *r, BIGNUM *a, BIGNUM *b,BN_CTX *ctx);
d02b48c6 348int BN_sqr(BIGNUM *r, BIGNUM *a,BN_CTX *ctx);
dfeab068
RE		 349BN_ULONG BN_mod_word(BIGNUM *a, BN_ULONG w);
350BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w);
351int BN_mul_word(BIGNUM *a, BN_ULONG w);
352int BN_add_word(BIGNUM *a, BN_ULONG w);
353int BN_sub_word(BIGNUM *a, BN_ULONG w);
354int BN_set_word(BIGNUM *a, BN_ULONG w);
355BN_ULONG BN_get_word(BIGNUM *a);
d02b48c6
RE		 356int BN_cmp(BIGNUM *a, BIGNUM *b);
357void BN_free(BIGNUM *a);
358int BN_is_bit_set(BIGNUM *a, int n);
359int BN_lshift(BIGNUM *r, BIGNUM *a, int n);
360int BN_lshift1(BIGNUM *r, BIGNUM *a);
58964a49 361int BN_exp(BIGNUM *r, BIGNUM *a, BIGNUM *p,BN_CTX *ctx);
d02b48c6 362int BN_mod_exp(BIGNUM *r, BIGNUM *a, BIGNUM *p, BIGNUM *m,BN_CTX *ctx);
58964a49
RE		 363int BN_mod_exp_mont(BIGNUM *r, BIGNUM *a, BIGNUM *p, BIGNUM *m,BN_CTX *ctx,
364 BN_MONT_CTX *m_ctx);
dfeab068
RE		 365int BN_mod_exp2_mont(BIGNUM *r, BIGNUM *a1, BIGNUM *p1,BIGNUM *a2,
366 BIGNUM *p2,BIGNUM *m,BN_CTX *ctx,BN_MONT_CTX *m_ctx);
d02b48c6
RE		 367int BN_mod_exp_simple(BIGNUM *r, BIGNUM *a, BIGNUM *p,
368 BIGNUM *m,BN_CTX *ctx);
369int BN_mask_bits(BIGNUM *a,int n);
d02b48c6
RE		 370int BN_mod_mul(BIGNUM *ret, BIGNUM *a, BIGNUM *b, BIGNUM *m,
371 BN_CTX *ctx);
372#ifndef WIN16
373int BN_print_fp(FILE *fp, BIGNUM *a);
374#endif
375#ifdef HEADER_BIO_H
376int BN_print(BIO *fp, BIGNUM *a);
377#else
378int BN_print(char *fp, BIGNUM *a);
379#endif
dfeab068 380int BN_reciprocal(BIGNUM *r, BIGNUM *m, int len, BN_CTX *ctx);
d02b48c6
RE		 381int BN_rshift(BIGNUM *r, BIGNUM *a, int n);
382int BN_rshift1(BIGNUM *r, BIGNUM *a);
383void BN_clear(BIGNUM *a);
384BIGNUM *bn_expand2(BIGNUM *b, int bits);
385BIGNUM *BN_dup(BIGNUM *a);
386int BN_ucmp(BIGNUM *a, BIGNUM *b);
387int BN_set_bit(BIGNUM *a, int n);
388int BN_clear_bit(BIGNUM *a, int n);
58964a49
RE		 389char * BN_bn2hex(BIGNUM *a);
390char * BN_bn2dec(BIGNUM *a);
391int BN_hex2bn(BIGNUM **a,char *str);
392int BN_dec2bn(BIGNUM **a,char *str);
d02b48c6 393int BN_gcd(BIGNUM *r,BIGNUM *in_a,BIGNUM *in_b,BN_CTX *ctx);
dfeab068
RE		 394BIGNUM *BN_mod_inverse(BIGNUM *ret,BIGNUM *a, BIGNUM *n,BN_CTX *ctx);
395BIGNUM *BN_generate_prime(BIGNUM *ret,int bits,int strong,BIGNUM *add,
58964a49
RE		 396 BIGNUM *rem,void (*callback)(int,int,char *),char *cb_arg);
397int BN_is_prime(BIGNUM *p,int nchecks,void (*callback)(int,int,char *),
398 BN_CTX *ctx,char *cb_arg);
d02b48c6
RE		 399void ERR_load_BN_strings(void );
400
58964a49
RE		 401BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w);
402BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w);
d02b48c6 403void bn_sqr_words(BN_ULONG *rp, BN_ULONG *ap, int num);
dfeab068 404BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d);
58964a49 405BN_ULONG bn_add_words(BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int num);
dfeab068 406BN_ULONG bn_sub_words(BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int num);
d02b48c6
RE		 407
408BN_MONT_CTX *BN_MONT_CTX_new(void );
dfeab068 409void BN_MONT_CTX_init(BN_MONT_CTX *ctx);
d02b48c6
RE		 410int BN_mod_mul_montgomery(BIGNUM *r,BIGNUM *a,BIGNUM *b,BN_MONT_CTX *mont,
411 BN_CTX *ctx);
412int BN_from_montgomery(BIGNUM *r,BIGNUM *a,BN_MONT_CTX *mont,BN_CTX *ctx);
413void BN_MONT_CTX_free(BN_MONT_CTX *mont);
414int BN_MONT_CTX_set(BN_MONT_CTX *mont,BIGNUM *modulus,BN_CTX *ctx);
dfeab068 415BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to,BN_MONT_CTX *from);
d02b48c6 416
58964a49
RE		 417BN_BLINDING *BN_BLINDING_new(BIGNUM *A,BIGNUM *Ai,BIGNUM *mod);
418void BN_BLINDING_free(BN_BLINDING *b);
419int BN_BLINDING_update(BN_BLINDING *b,BN_CTX *ctx);
420int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *r, BN_CTX *ctx);
421int BN_BLINDING_invert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx);
422
dfeab068
RE		 423void BN_set_params(int mul,int high,int low,int mont);
424int BN_get_params(int which); /* 0, mul, 1 high, 2 low, 3 mont */
425
426void bn_mul_normal(BN_ULONG *r,BN_ULONG *a,int na,BN_ULONG *b,int nb);
427void bn_mul_comba8(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b);
428void bn_mul_comba4(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b);
429void bn_sqr_normal(BN_ULONG *r, BN_ULONG *a, int n, BN_ULONG *tmp);
430void bn_sqr_comba8(BN_ULONG *r,BN_ULONG *a);
431void bn_sqr_comba4(BN_ULONG *r,BN_ULONG *a);
432int bn_cmp_words(BN_ULONG *a,BN_ULONG *b,int n);
433void bn_mul_recursive(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b,int n2,BN_ULONG *t);
434void bn_mul_part_recursive(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b,
435 int tn, int n,BN_ULONG *t);
436void bn_sqr_recursive(BN_ULONG *r,BN_ULONG *a, int n2, BN_ULONG *t);
437void bn_mul_low_normal(BN_ULONG *r,BN_ULONG *a,BN_ULONG *b, int n);
438
439void BN_RECP_CTX_init(BN_RECP_CTX *recp);
440BN_RECP_CTX *BN_RECP_CTX_new(void);
441void BN_RECP_CTX_free(BN_RECP_CTX *recp);
442int BN_RECP_CTX_set(BN_RECP_CTX *recp,BIGNUM *rdiv,BN_CTX *ctx);
443int BN_mod_mul_reciprocal(BIGNUM *r, BIGNUM *x, BIGNUM *y,
444 BN_RECP_CTX *recp,BN_CTX *ctx);
445int BN_mod_exp_recp(BIGNUM *r, BIGNUM *a, BIGNUM *p, BIGNUM *m,BN_CTX *ctx);
446int BN_div_recp(BIGNUM *dv, BIGNUM *rem, BIGNUM *m,
447 BN_RECP_CTX *recp, BN_CTX *ctx);
448
449
d02b48c6
RE		 450#else
451
452BIGNUM *BN_value_one();
453char * BN_options();
454BN_CTX *BN_CTX_new();
dfeab068 455void BN_CTX_init();
d02b48c6
RE		 456void BN_CTX_free();
457int BN_rand();
458int BN_num_bits();
459int BN_num_bits_word();
460BIGNUM *BN_new();
dfeab068 461void BN_init();
d02b48c6
RE		 462void BN_clear_free();
463BIGNUM *BN_copy();
464BIGNUM *BN_bin2bn();
465int BN_bn2bin();
58964a49
RE		 466BIGNUM *BN_mpi2bn();
467int BN_bn2mpi();
d02b48c6 468int BN_sub();
dfeab068
RE		 469int BN_usub();
470int BN_uadd();
d02b48c6
RE		 471int BN_add();
472int BN_mod();
473int BN_div();
474int BN_mul();
475int BN_sqr();
476BN_ULONG BN_mod_word();
477BN_ULONG BN_div_word();
478int BN_add_word();
58964a49
RE		 479int BN_sub_word();
480int BN_mul_word();
d02b48c6
RE		 481int BN_set_word();
482unsigned long BN_get_word();
483int BN_cmp();
484void BN_free();
485int BN_is_bit_set();
486int BN_lshift();
487int BN_lshift1();
58964a49 488int BN_exp();
d02b48c6
RE		 489int BN_mod_exp();
490int BN_mod_exp_mont();
491int BN_mod_exp_recp();
492int BN_mod_exp_simple();
493int BN_mask_bits();
494int BN_mod_mul_reciprocal();
495int BN_mod_mul();
496#ifndef WIN16
497int BN_print_fp();
498#endif
499int BN_print();
500int BN_reciprocal();
501int BN_rshift();
502int BN_rshift1();
503void BN_clear();
504BIGNUM *bn_expand2();
505BIGNUM *BN_dup();
506int BN_ucmp();
507int BN_set_bit();
508int BN_clear_bit();
58964a49
RE		 509char * BN_bn2hex();
510char * BN_bn2dec();
511int BN_hex2bn();
512int BN_dec2bn();
d02b48c6
RE		 513int BN_gcd();
514BIGNUM *BN_mod_inverse();
515BIGNUM *BN_generate_prime();
516int BN_is_prime();
517void ERR_load_BN_strings();
518
58964a49
RE		 519BN_ULONG bn_mul_add_words();
520BN_ULONG bn_mul_words();
d02b48c6 521void bn_sqr_words();
dfeab068 522BN_ULONG bn_div_words();
58964a49 523BN_ULONG bn_add_words();
dfeab068 524BN_ULONG bn_sub_words();
d02b48c6
RE		 525
526int BN_mod_mul_montgomery();
527int BN_from_montgomery();
528BN_MONT_CTX *BN_MONT_CTX_new();
dfeab068 529void BN_MONT_CTX_init();
d02b48c6
RE		 530void BN_MONT_CTX_free();
531int BN_MONT_CTX_set();
532
58964a49
RE		 533BN_BLINDING *BN_BLINDING_new();
534void BN_BLINDING_free();
535int BN_BLINDING_update();
536int BN_BLINDING_convert();
537int BN_BLINDING_invert();
538
dfeab068
RE		 539void bn_mul_normal();
540void bn_mul_comba8();
541void bn_mul_comba4();
542void bn_sqr_normal();
543void bn_sqr_comba8();
544void bn_sqr_comba4();
545int bn_cmp_words();
546void bn_mul_recursive();
547void bn_mul_part_recursive();
548void bn_sqr_recursive();
549void bn_mul_low_normal();
550
551void BN_RECP_CTX_init();
552BN_RECP_CTX *BN_RECP_CTX_new();
553void BN_RECP_CTX_free();
554int BN_RECP_CTX_set();
555int BN_mod_mul_reciprocal();
556int BN_mod_exp_recp();
557int BN_div_recp();
558
d02b48c6
RE		 559#endif
560
561/* BEGIN ERROR CODES */
562/* Error codes for the BN functions. */
563
564/* Function codes. */
58964a49
RE		 565#define BN_F_BN_BLINDING_CONVERT 100
566#define BN_F_BN_BLINDING_INVERT 101
567#define BN_F_BN_BLINDING_NEW 102
568#define BN_F_BN_BLINDING_UPDATE 103
569#define BN_F_BN_BN2DEC 104
570#define BN_F_BN_BN2HEX 105
571#define BN_F_BN_CTX_NEW 106
572#define BN_F_BN_DIV 107
573#define BN_F_BN_EXPAND2 108
574#define BN_F_BN_MOD_EXP_MONT 109
575#define BN_F_BN_MOD_INVERSE 110
576#define BN_F_BN_MOD_MUL_RECIPROCAL 111
577#define BN_F_BN_MPI2BN 112
578#define BN_F_BN_NEW 113
579#define BN_F_BN_RAND 114
dfeab068 580#define BN_F_BN_USUB 115
d02b48c6
RE		 581
582/* Reason codes. */
dfeab068
RE		 583#define BN_R_ARG2_LT_ARG3 100
584#define BN_R_BAD_RECIPROCAL 101
585#define BN_R_CALLED_WITH_EVEN_MODULUS 102
586#define BN_R_DIV_BY_ZERO 103
587#define BN_R_ENCODING_ERROR 104
588#define BN_R_EXPAND_ON_STATIC_BIGNUM_DATA 105
589#define BN_R_INVALID_LENGTH 106
590#define BN_R_NOT_INITALISED 107
591#define BN_R_NO_INVERSE 108
d02b48c6
RE		 592
593#ifdef __cplusplus
594}
595#endif
596#endif
597
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