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169cc7a1 1/* crypto/bn/bn.h */
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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
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59#ifndef HEADER_BN_H
60#define HEADER_BN_H
61
de42b6a7 62#ifndef NO_FP_API
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63#include <stdio.h> /* FILE */
64#endif
ec577822 65#include <openssl/opensslconf.h>
8e10f2b3 66
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67#ifdef __cplusplus
68extern "C" {
69#endif
70
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71#ifdef VMS
72#undef BN_LLONG /* experimental, so far... */
73#endif
74
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75#define BN_MUL_COMBA
76#define BN_SQR_COMBA
77#define BN_RECURSION
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78#define RECP_MUL_MOD
79#define MONT_MUL_MOD
80
81/* This next option uses the C libraries (2 word)/(1 word) function.
82 * If it is not defined, I use my C version (which is slower).
83 * The reason for this flag is that when the particular C compiler
84 * library routine is used, and the library is linked with a different
85 * compiler, the library is missing. This mostly happens when the
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86 * library is built with gcc and then linked using normal cc. This would
87 * be a common occurrence because gcc normally produces code that is
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88 * 2 times faster than system compilers for the big number stuff.
89 * For machines with only one compiler (or shared libraries), this should
90 * be on. Again this in only really a problem on machines
657e60fa 91 * using "long long's", are 32bit, and are not using my assembler code. */
f1a617ed 92#if defined(MSDOS) || defined(WINDOWS) || defined(WIN32) || defined(linux)
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93#define BN_DIV2W
94#endif
95
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96/* assuming long is 64bit - this is the DEC Alpha
97 * unsigned long long is only 64 bits :-(, don't define
98 * BN_LLONG for the DEC Alpha */
99#ifdef SIXTY_FOUR_BIT_LONG
100#define BN_ULLONG unsigned long long
101#define BN_ULONG unsigned long
102#define BN_LONG long
103#define BN_BITS 128
104#define BN_BYTES 8
105#define BN_BITS2 64
106#define BN_BITS4 32
dfeab068 107#define BN_MASK (0xffffffffffffffffffffffffffffffffLL)
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108#define BN_MASK2 (0xffffffffffffffffL)
109#define BN_MASK2l (0xffffffffL)
110#define BN_MASK2h (0xffffffff00000000L)
111#define BN_MASK2h1 (0xffffffff80000000L)
112#define BN_TBIT (0x8000000000000000L)
dfeab068 113#define BN_DEC_CONV (10000000000000000000UL)
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114#define BN_DEC_FMT1 "%lu"
115#define BN_DEC_FMT2 "%019lu"
116#define BN_DEC_NUM 19
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117#endif
118
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119/* This is where the long long data type is 64 bits, but long is 32.
120 * For machines where there are 64bit registers, this is the mode to use.
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121 * IRIX, on R4000 and above should use this mode, along with the relevant
122 * assembler code :-). Do NOT define BN_LLONG.
dfeab068 123 */
d02b48c6 124#ifdef SIXTY_FOUR_BIT
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125#undef BN_LLONG
126#undef BN_ULLONG
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127#define BN_ULONG unsigned long long
128#define BN_LONG long long
129#define BN_BITS 128
130#define BN_BYTES 8
131#define BN_BITS2 64
132#define BN_BITS4 32
133#define BN_MASK2 (0xffffffffffffffffLL)
134#define BN_MASK2l (0xffffffffL)
135#define BN_MASK2h (0xffffffff00000000LL)
136#define BN_MASK2h1 (0xffffffff80000000LL)
137#define BN_TBIT (0x8000000000000000LL)
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138#define BN_DEC_CONV (10000000000000000000LL)
139#define BN_DEC_FMT1 "%llu"
140#define BN_DEC_FMT2 "%019llu"
58964a49 141#define BN_DEC_NUM 19
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142#endif
143
144#ifdef THIRTY_TWO_BIT
e3718280 145#if defined(WIN32) && !defined(__GNUC__)
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146#define BN_ULLONG unsigned _int64
147#else
148#define BN_ULLONG unsigned long long
149#endif
150#define BN_ULONG unsigned long
151#define BN_LONG long
152#define BN_BITS 64
153#define BN_BYTES 4
154#define BN_BITS2 32
155#define BN_BITS4 16
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156#ifdef WIN32
157/* VC++ doesn't like the LL suffix */
158#define BN_MASK (0xffffffffffffffffL)
159#else
dfeab068 160#define BN_MASK (0xffffffffffffffffLL)
9b3086fe 161#endif
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162#define BN_MASK2 (0xffffffffL)
163#define BN_MASK2l (0xffff)
164#define BN_MASK2h1 (0xffff8000L)
165#define BN_MASK2h (0xffff0000L)
166#define BN_TBIT (0x80000000L)
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167#define BN_DEC_CONV (1000000000L)
168#define BN_DEC_FMT1 "%lu"
169#define BN_DEC_FMT2 "%09lu"
170#define BN_DEC_NUM 9
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171#endif
172
173#ifdef SIXTEEN_BIT
174#ifndef BN_DIV2W
175#define BN_DIV2W
176#endif
177#define BN_ULLONG unsigned long
178#define BN_ULONG unsigned short
179#define BN_LONG short
180#define BN_BITS 32
181#define BN_BYTES 2
182#define BN_BITS2 16
183#define BN_BITS4 8
dfeab068 184#define BN_MASK (0xffffffff)
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185#define BN_MASK2 (0xffff)
186#define BN_MASK2l (0xff)
187#define BN_MASK2h1 (0xff80)
188#define BN_MASK2h (0xff00)
189#define BN_TBIT (0x8000)
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190#define BN_DEC_CONV (100000)
191#define BN_DEC_FMT1 "%u"
192#define BN_DEC_FMT2 "%05u"
193#define BN_DEC_NUM 5
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194#endif
195
196#ifdef EIGHT_BIT
197#ifndef BN_DIV2W
198#define BN_DIV2W
199#endif
200#define BN_ULLONG unsigned short
201#define BN_ULONG unsigned char
202#define BN_LONG char
203#define BN_BITS 16
204#define BN_BYTES 1
205#define BN_BITS2 8
206#define BN_BITS4 4
dfeab068 207#define BN_MASK (0xffff)
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208#define BN_MASK2 (0xff)
209#define BN_MASK2l (0xf)
210#define BN_MASK2h1 (0xf8)
211#define BN_MASK2h (0xf0)
212#define BN_TBIT (0x80)
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213#define BN_DEC_CONV (100)
214#define BN_DEC_FMT1 "%u"
215#define BN_DEC_FMT2 "%02u"
216#define BN_DEC_NUM 2
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217#endif
218
219#define BN_DEFAULT_BITS 1280
220
221#ifdef BIGNUM
222#undef BIGNUM
223#endif
224
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225#define BN_FLG_MALLOCED 0x01
226#define BN_FLG_STATIC_DATA 0x02
227#define BN_FLG_FREE 0x8000 /* used for debuging */
228#define BN_set_flags(b,n) ((b)->flags|=(n))
229#define BN_get_flags(b,n) ((b)->flags&(n))
230
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231typedef struct bignum_st
232 {
233 BN_ULONG *d; /* Pointer to an array of 'BN_BITS2' bit chunks. */
234 int top; /* Index of last used d +1. */
235 /* The next are internal book keeping for bn_expand. */
2d978cbd 236 int dmax; /* Size of the d array. */
d02b48c6 237 int neg; /* one if the number is negative */
dfeab068 238 int flags;
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239 } BIGNUM;
240
241/* Used for temp variables */
242#define BN_CTX_NUM 12
eb5a6a55 243#define BN_CTX_NUM_POS 12
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244typedef struct bignum_ctx
245 {
246 int tos;
eb5a6a55 247 BIGNUM bn[BN_CTX_NUM];
dfeab068 248 int flags;
9b141126 249 int depth;
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250 int pos[BN_CTX_NUM_POS];
251 int too_many;
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252 } BN_CTX;
253
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254typedef struct bn_blinding_st
255 {
256 int init;
257 BIGNUM *A;
258 BIGNUM *Ai;
259 BIGNUM *mod; /* just a reference */
260 } BN_BLINDING;
261
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262/* Used for montgomery multiplication */
263typedef struct bn_mont_ctx_st
e93f9a32 264 {
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265 int ri; /* number of bits in R */
266 BIGNUM RR; /* used to convert to montgomery form */
267 BIGNUM N; /* The modulus */
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268 BIGNUM Ni; /* R*(1/R mod N) - N*Ni = 1
269 * (Ni is only stored for bignum algorithm) */
270 BN_ULONG n0; /* least significant word of Ni */
dfeab068 271 int flags;
e93f9a32 272 } BN_MONT_CTX;
d02b48c6 273
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274/* Used for reciprocal division/mod functions
275 * It cannot be shared between threads
276 */
277typedef struct bn_recp_ctx_st
278 {
279 BIGNUM N; /* the divisor */
280 BIGNUM Nr; /* the reciprocal */
281 int num_bits;
282 int shift;
283 int flags;
284 } BN_RECP_CTX;
285
d02b48c6 286#define BN_to_montgomery(r,a,mont,ctx) BN_mod_mul_montgomery(\
dfeab068 287 r,a,&((mont)->RR),(mont),ctx)
d02b48c6 288
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289#define BN_prime_checks 0 /* default: select number of iterations
290 based on the size of the number */
d02b48c6 291
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292/* number of Miller-Rabin iterations for an error rate of less than 2^-80
293 * for random 'b'-bit input, b >= 100 (taken from table 4.4 in the Handbook
294 * of Applied Cryptography [Menezes, van Oorschot, Vanstone; CRC Press 1996];
295 * original paper: Damgaard, Landrock, Pomerance: Average case error estimates
296 * for the strong probable prime test. -- Math. Comp. 61 (1993) 177-194) */
a87030a1 297#define BN_prime_checks_for_size(b) ((b) >= 1300 ? 2 : \
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298 (b) >= 850 ? 3 : \
299 (b) >= 650 ? 4 : \
300 (b) >= 550 ? 5 : \
301 (b) >= 450 ? 6 : \
302 (b) >= 400 ? 7 : \
303 (b) >= 350 ? 8 : \
304 (b) >= 300 ? 9 : \
305 (b) >= 250 ? 12 : \
306 (b) >= 200 ? 15 : \
307 (b) >= 150 ? 18 : \
308 /* b >= 100 */ 27)
309
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310#define BN_num_bytes(a) ((BN_num_bits(a)+7)/8)
311#define BN_is_word(a,w) (((a)->top == 1) && ((a)->d[0] == (BN_ULONG)(w)))
dfeab068 312#define BN_is_zero(a) (((a)->top == 0) || BN_is_word(a,0))
d02b48c6 313#define BN_is_one(a) (BN_is_word((a),1))
dfeab068 314#define BN_is_odd(a) (((a)->top > 0) && ((a)->d[0] & 1))
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315#define BN_one(a) (BN_set_word((a),1))
316#define BN_zero(a) (BN_set_word((a),0))
317
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318/*#define BN_ascii2bn(a) BN_hex2bn(a) */
319/*#define BN_bn2ascii(a) BN_bn2hex(a) */
d02b48c6 320
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321BIGNUM *BN_value_one(void);
322char * BN_options(void);
323BN_CTX *BN_CTX_new(void);
dfeab068 324void BN_CTX_init(BN_CTX *c);
d02b48c6 325void BN_CTX_free(BN_CTX *c);
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326void BN_CTX_start(BN_CTX *ctx);
327BIGNUM *BN_CTX_get(BN_CTX *ctx);
328void BN_CTX_end(BN_CTX *ctx);
d02b48c6 329int BN_rand(BIGNUM *rnd, int bits, int top,int bottom);
f95a9f67 330int BN_pseudo_rand(BIGNUM *rnd, int bits, int top,int bottom);
84c15db5 331int BN_num_bits(const BIGNUM *a);
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332int BN_num_bits_word(BN_ULONG);
333BIGNUM *BN_new(void);
dfeab068 334void BN_init(BIGNUM *);
d02b48c6 335void BN_clear_free(BIGNUM *a);
84c15db5 336BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b);
61f5b6f3 337BIGNUM *BN_bin2bn(const unsigned char *s,int len,BIGNUM *ret);
8623f693 338int BN_bn2bin(const BIGNUM *a, unsigned char *to);
58964a49 339BIGNUM *BN_mpi2bn(unsigned char *s,int len,BIGNUM *ret);
8623f693 340int BN_bn2mpi(const BIGNUM *a, unsigned char *to);
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341int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
342int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
343int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
dd8dec69 344int BN_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b);
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345int BN_mod(BIGNUM *rem, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx);
346int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
347 BN_CTX *ctx);
dd8dec69 348int BN_mul(BIGNUM *r, BIGNUM *a, BIGNUM *b, BN_CTX *ctx);
d02b48c6 349int BN_sqr(BIGNUM *r, BIGNUM *a,BN_CTX *ctx);
7999c65c 350BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w);
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351BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w);
352int BN_mul_word(BIGNUM *a, BN_ULONG w);
353int BN_add_word(BIGNUM *a, BN_ULONG w);
354int BN_sub_word(BIGNUM *a, BN_ULONG w);
355int BN_set_word(BIGNUM *a, BN_ULONG w);
356BN_ULONG BN_get_word(BIGNUM *a);
84c15db5 357int BN_cmp(const BIGNUM *a, const BIGNUM *b);
d02b48c6 358void BN_free(BIGNUM *a);
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359int BN_is_bit_set(const BIGNUM *a, int n);
360int BN_lshift(BIGNUM *r, const BIGNUM *a, int n);
d02b48c6 361int BN_lshift1(BIGNUM *r, BIGNUM *a);
58964a49 362int BN_exp(BIGNUM *r, BIGNUM *a, BIGNUM *p,BN_CTX *ctx);
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363int BN_mod_exp(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
364 const BIGNUM *m,BN_CTX *ctx);
365int BN_mod_exp_mont(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
366 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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367int BN_mod_exp_mont_word(BIGNUM *r, BN_ULONG a, const BIGNUM *p,
368 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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369int BN_mod_exp2_mont(BIGNUM *r, BIGNUM *a1, BIGNUM *p1,BIGNUM *a2,
370 BIGNUM *p2,BIGNUM *m,BN_CTX *ctx,BN_MONT_CTX *m_ctx);
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371int BN_mod_exp_simple(BIGNUM *r, BIGNUM *a, BIGNUM *p,
372 BIGNUM *m,BN_CTX *ctx);
373int BN_mask_bits(BIGNUM *a,int n);
84c15db5 374int BN_mod_mul(BIGNUM *ret, BIGNUM *a, BIGNUM *b, const BIGNUM *m, BN_CTX *ctx);
775c63fc 375#ifndef NO_FP_API
e93f9a32 376int BN_print_fp(FILE *fp, const BIGNUM *a);
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377#endif
378#ifdef HEADER_BIO_H
8d8a8041 379int BN_print(BIO *fp, const BIGNUM *a);
d02b48c6 380#else
775c63fc 381int BN_print(void *fp, const BIGNUM *a);
d02b48c6 382#endif
dfeab068 383int BN_reciprocal(BIGNUM *r, BIGNUM *m, int len, BN_CTX *ctx);
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384int BN_rshift(BIGNUM *r, BIGNUM *a, int n);
385int BN_rshift1(BIGNUM *r, BIGNUM *a);
386void BN_clear(BIGNUM *a);
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387BIGNUM *BN_dup(const BIGNUM *a);
388int BN_ucmp(const BIGNUM *a, const BIGNUM *b);
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389int BN_set_bit(BIGNUM *a, int n);
390int BN_clear_bit(BIGNUM *a, int n);
8623f693
DSH
391char * BN_bn2hex(const BIGNUM *a);
392char * BN_bn2dec(const BIGNUM *a);
393int BN_hex2bn(BIGNUM **a, const char *str);
394int BN_dec2bn(BIGNUM **a, const char *str);
d02b48c6 395int BN_gcd(BIGNUM *r,BIGNUM *in_a,BIGNUM *in_b,BN_CTX *ctx);
84c15db5 396BIGNUM *BN_mod_inverse(BIGNUM *ret,BIGNUM *a, const BIGNUM *n,BN_CTX *ctx);
76aa0ddc 397BIGNUM *BN_generate_prime(BIGNUM *ret,int bits,int safe,BIGNUM *add,
b4f76582 398 BIGNUM *rem,void (*callback)(int,int,void *),void *cb_arg);
aff0825c
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399int BN_is_prime(const BIGNUM *p,int nchecks,
400 void (*callback)(int,int,void *),
b4f76582 401 BN_CTX *ctx,void *cb_arg);
aff0825c 402int BN_is_prime_fasttest(const BIGNUM *p,int nchecks,
e74231ed 403 void (*callback)(int,int,void *),BN_CTX *ctx,void *cb_arg,
a87030a1 404 int do_trial_division);
d02b48c6
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405void ERR_load_BN_strings(void );
406
d02b48c6 407BN_MONT_CTX *BN_MONT_CTX_new(void );
dfeab068 408void BN_MONT_CTX_init(BN_MONT_CTX *ctx);
d02b48c6 409int BN_mod_mul_montgomery(BIGNUM *r,BIGNUM *a,BIGNUM *b,BN_MONT_CTX *mont,
84c15db5 410 BN_CTX *ctx);
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411int BN_from_montgomery(BIGNUM *r,BIGNUM *a,BN_MONT_CTX *mont,BN_CTX *ctx);
412void BN_MONT_CTX_free(BN_MONT_CTX *mont);
84c15db5 413int BN_MONT_CTX_set(BN_MONT_CTX *mont,const BIGNUM *modulus,BN_CTX *ctx);
dfeab068 414BN_MONT_CTX *BN_MONT_CTX_copy(BN_MONT_CTX *to,BN_MONT_CTX *from);
d02b48c6 415
58964a49
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416BN_BLINDING *BN_BLINDING_new(BIGNUM *A,BIGNUM *Ai,BIGNUM *mod);
417void BN_BLINDING_free(BN_BLINDING *b);
418int BN_BLINDING_update(BN_BLINDING *b,BN_CTX *ctx);
419int BN_BLINDING_convert(BIGNUM *n, BN_BLINDING *r, BN_CTX *ctx);
420int BN_BLINDING_invert(BIGNUM *n, BN_BLINDING *b, BN_CTX *ctx);
421
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422void BN_set_params(int mul,int high,int low,int mont);
423int BN_get_params(int which); /* 0, mul, 1 high, 2 low, 3 mont */
424
dfeab068
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425void BN_RECP_CTX_init(BN_RECP_CTX *recp);
426BN_RECP_CTX *BN_RECP_CTX_new(void);
427void BN_RECP_CTX_free(BN_RECP_CTX *recp);
84c15db5 428int BN_RECP_CTX_set(BN_RECP_CTX *recp,const BIGNUM *rdiv,BN_CTX *ctx);
dfeab068
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429int BN_mod_mul_reciprocal(BIGNUM *r, BIGNUM *x, BIGNUM *y,
430 BN_RECP_CTX *recp,BN_CTX *ctx);
84c15db5
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431int BN_mod_exp_recp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
432 const BIGNUM *m, BN_CTX *ctx);
dfeab068
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433int BN_div_recp(BIGNUM *dv, BIGNUM *rem, BIGNUM *m,
434 BN_RECP_CTX *recp, BN_CTX *ctx);
435
775c63fc
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436/* library internal functions */
437
2d978cbd 438#define bn_expand(a,bits) ((((((bits+BN_BITS2-1))/BN_BITS2)) <= (a)->dmax)?\
775c63fc 439 (a):bn_expand2((a),(bits)/BN_BITS2+1))
2d978cbd 440#define bn_wexpand(a,words) (((words) <= (a)->dmax)?(a):bn_expand2((a),(words)))
775c63fc
UM
441BIGNUM *bn_expand2(BIGNUM *a, int words);
442
443#define bn_fix_top(a) \
444 { \
445 BN_ULONG *ftl; \
446 if ((a)->top > 0) \
447 { \
448 for (ftl= &((a)->d[(a)->top-1]); (a)->top > 0; (a)->top--) \
449 if (*(ftl--)) break; \
450 } \
451 }
452
453BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w);
454BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w);
455void bn_sqr_words(BN_ULONG *rp, BN_ULONG *ap, int num);
456BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d);
457BN_ULONG bn_add_words(BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int num);
458BN_ULONG bn_sub_words(BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int num);
459
460#ifdef BN_DEBUG
461 void bn_dump1(FILE *o, const char *a, BN_ULONG *b,int n);
462# define bn_print(a) {fprintf(stderr, #a "="); BN_print_fp(stderr,a); \
463 fprintf(stderr,"\n");}
464# define bn_dump(a,n) bn_dump1(stderr,#a,a,n);
465#else
466# define bn_print(a)
467# define bn_dump(a,b)
468#endif
dfeab068 469
d02b48c6 470/* BEGIN ERROR CODES */
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DSH
471/* The following lines are auto generated by the script mkerr.pl. Any changes
472 * made after this point may be overwritten when the script is next run.
473 */
474
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RE
475/* Error codes for the BN functions. */
476
477/* Function codes. */
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RE
478#define BN_F_BN_BLINDING_CONVERT 100
479#define BN_F_BN_BLINDING_INVERT 101
480#define BN_F_BN_BLINDING_NEW 102
481#define BN_F_BN_BLINDING_UPDATE 103
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MC
482#define BN_F_BN_BN2DEC 104
483#define BN_F_BN_BN2HEX 105
9b141126 484#define BN_F_BN_CTX_GET 116
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485#define BN_F_BN_CTX_NEW 106
486#define BN_F_BN_DIV 107
487#define BN_F_BN_EXPAND2 108
dc434bbc 488#define BN_F_BN_MOD_EXP2_MONT 118
a0a54079 489#define BN_F_BN_MOD_EXP_MONT 109
6dad7bd6 490#define BN_F_BN_MOD_EXP_MONT_WORD 117
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491#define BN_F_BN_MOD_INVERSE 110
492#define BN_F_BN_MOD_MUL_RECIPROCAL 111
493#define BN_F_BN_MPI2BN 112
494#define BN_F_BN_NEW 113
495#define BN_F_BN_RAND 114
496#define BN_F_BN_USUB 115
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RE
497
498/* Reason codes. */
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499#define BN_R_ARG2_LT_ARG3 100
500#define BN_R_BAD_RECIPROCAL 101
501#define BN_R_CALLED_WITH_EVEN_MODULUS 102
502#define BN_R_DIV_BY_ZERO 103
503#define BN_R_ENCODING_ERROR 104
504#define BN_R_EXPAND_ON_STATIC_BIGNUM_DATA 105
505#define BN_R_INVALID_LENGTH 106
df82f5c8 506#define BN_R_NOT_INITIALIZED 107
dfeab068 507#define BN_R_NO_INVERSE 108
9b141126 508#define BN_R_TOO_MANY_TEMPORARY_VARIABLES 109
6d311938 509
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RE
510#ifdef __cplusplus
511}
512#endif
513#endif
514