]>
git.ipfire.org Git - thirdparty/openssl.git/blob - include/openssl/bn.h
2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
15 # include <openssl/macros.h>
16 # ifndef OPENSSL_NO_DEPRECATED_3_0
20 # include <openssl/e_os2.h>
21 # ifndef OPENSSL_NO_STDIO
24 # include <openssl/opensslconf.h>
25 # include <openssl/types.h>
26 # include <openssl/crypto.h>
27 # include <openssl/bnerr.h>
34 * 64-bit processor with LP64 ABI
36 # ifdef SIXTY_FOUR_BIT_LONG
37 # define BN_ULONG unsigned long
42 * 64-bit processor other than LP64 ABI
44 # ifdef SIXTY_FOUR_BIT
45 # define BN_ULONG unsigned long long
49 # ifdef THIRTY_TWO_BIT
50 # define BN_ULONG unsigned int
54 # define BN_BITS2 (BN_BYTES * 8)
55 # define BN_BITS (BN_BITS2 * 2)
56 # define BN_TBIT ((BN_ULONG)1 << (BN_BITS2 - 1))
58 # define BN_FLG_MALLOCED 0x01
59 # define BN_FLG_STATIC_DATA 0x02
62 * avoid leaking exponent information through timing,
63 * BN_mod_exp_mont() will call BN_mod_exp_mont_consttime,
64 * BN_div() will call BN_div_no_branch,
65 * BN_mod_inverse() will call bn_mod_inverse_no_branch.
67 # define BN_FLG_CONSTTIME 0x04
68 # define BN_FLG_SECURE 0x08
70 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
71 /* deprecated name for the flag */
72 # define BN_FLG_EXP_CONSTTIME BN_FLG_CONSTTIME
73 # define BN_FLG_FREE 0x8000 /* used for debugging */
76 void BN_set_flags(BIGNUM
*b
, int n
);
77 int BN_get_flags(const BIGNUM
*b
, int n
);
79 /* Values for |top| in BN_rand() */
80 #define BN_RAND_TOP_ANY -1
81 #define BN_RAND_TOP_ONE 0
82 #define BN_RAND_TOP_TWO 1
84 /* Values for |bottom| in BN_rand() */
85 #define BN_RAND_BOTTOM_ANY 0
86 #define BN_RAND_BOTTOM_ODD 1
89 * get a clone of a BIGNUM with changed flags, for *temporary* use only (the
90 * two BIGNUMs cannot be used in parallel!). Also only for *read only* use. The
91 * value |dest| should be a newly allocated BIGNUM obtained via BN_new() that
92 * has not been otherwise initialised or used.
94 void BN_with_flags(BIGNUM
*dest
, const BIGNUM
*b
, int flags
);
96 /* Wrapper function to make using BN_GENCB easier */
97 int BN_GENCB_call(BN_GENCB
*cb
, int a
, int b
);
99 BN_GENCB
*BN_GENCB_new(void);
100 void BN_GENCB_free(BN_GENCB
*cb
);
102 /* Populate a BN_GENCB structure with an "old"-style callback */
103 void BN_GENCB_set_old(BN_GENCB
*gencb
, void (*callback
) (int, int, void *),
106 /* Populate a BN_GENCB structure with a "new"-style callback */
107 void BN_GENCB_set(BN_GENCB
*gencb
, int (*callback
) (int, int, BN_GENCB
*),
110 void *BN_GENCB_get_arg(BN_GENCB
*cb
);
112 # ifndef OPENSSL_NO_DEPRECATED_3_0
113 # define BN_prime_checks 0 /* default: select number of iterations based
114 * on the size of the number */
117 * BN_prime_checks_for_size() returns the number of Miller-Rabin iterations
118 * that will be done for checking that a random number is probably prime. The
119 * error rate for accepting a composite number as prime depends on the size of
120 * the prime |b|. The error rates used are for calculating an RSA key with 2 primes,
121 * and so the level is what you would expect for a key of double the size of the
124 * This table is generated using the algorithm of FIPS PUB 186-4
125 * Digital Signature Standard (DSS), section F.1, page 117.
126 * (https://dx.doi.org/10.6028/NIST.FIPS.186-4)
128 * The following magma script was used to generate the output:
132 * for M:=3 to Floor(2*Sqrt(k-1)-1) do
139 * s+:=(RealField(32)!2)^-(j+(k-1)/j);
141 * S+:=2^(m-(m-1)*t)*s;
144 * B:=8*(Pi(RealField(32))^2-6)/3*2^(k-2)*S;
145 * pkt:=2.00743*Log(2)*k*2^-k*(A+B);
146 * seclevel:=Floor(-Log(2,pkt));
147 * if seclevel ge securitybits then
148 * printf "k: %5o, security: %o bits (t: %o, M: %o)\n",k,seclevel,t,M;
152 * if seclevel ge securitybits then break; end if;
155 * It can be run online at:
156 * http://magma.maths.usyd.edu.au/calc
159 * k: 1024, security: 129 bits (t: 6, M: 23)
161 * k is the number of bits of the prime, securitybits is the level we want to
164 * prime length | RSA key size | # MR tests | security level
165 * -------------+--------------|------------+---------------
166 * (b) >= 6394 | >= 12788 | 3 | 256 bit
167 * (b) >= 3747 | >= 7494 | 3 | 192 bit
168 * (b) >= 1345 | >= 2690 | 4 | 128 bit
169 * (b) >= 1080 | >= 2160 | 5 | 128 bit
170 * (b) >= 852 | >= 1704 | 5 | 112 bit
171 * (b) >= 476 | >= 952 | 5 | 80 bit
172 * (b) >= 400 | >= 800 | 6 | 80 bit
173 * (b) >= 347 | >= 694 | 7 | 80 bit
174 * (b) >= 308 | >= 616 | 8 | 80 bit
175 * (b) >= 55 | >= 110 | 27 | 64 bit
176 * (b) >= 6 | >= 12 | 34 | 64 bit
179 # define BN_prime_checks_for_size(b) ((b) >= 3747 ? 3 : \
189 # define BN_num_bytes(a) ((BN_num_bits(a)+7)/8)
191 int BN_abs_is_word(const BIGNUM
*a
, const BN_ULONG w
);
192 int BN_is_zero(const BIGNUM
*a
);
193 int BN_is_one(const BIGNUM
*a
);
194 int BN_is_word(const BIGNUM
*a
, const BN_ULONG w
);
195 int BN_is_odd(const BIGNUM
*a
);
197 # define BN_one(a) (BN_set_word((a),1))
199 void BN_zero_ex(BIGNUM
*a
);
201 # if OPENSSL_API_LEVEL > 908
202 # define BN_zero(a) BN_zero_ex(a)
204 # define BN_zero(a) (BN_set_word((a),0))
207 const BIGNUM
*BN_value_one(void);
208 char *BN_options(void);
209 BN_CTX
*BN_CTX_new_ex(OSSL_LIB_CTX
*ctx
);
210 BN_CTX
*BN_CTX_new(void);
211 BN_CTX
*BN_CTX_secure_new_ex(OSSL_LIB_CTX
*ctx
);
212 BN_CTX
*BN_CTX_secure_new(void);
213 void BN_CTX_free(BN_CTX
*c
);
214 void BN_CTX_start(BN_CTX
*ctx
);
215 BIGNUM
*BN_CTX_get(BN_CTX
*ctx
);
216 void BN_CTX_end(BN_CTX
*ctx
);
217 int BN_rand_ex(BIGNUM
*rnd
, int bits
, int top
, int bottom
,
218 unsigned int strength
, BN_CTX
*ctx
);
219 int BN_rand(BIGNUM
*rnd
, int bits
, int top
, int bottom
);
220 int BN_priv_rand_ex(BIGNUM
*rnd
, int bits
, int top
, int bottom
,
221 unsigned int strength
, BN_CTX
*ctx
);
222 int BN_priv_rand(BIGNUM
*rnd
, int bits
, int top
, int bottom
);
223 int BN_rand_range_ex(BIGNUM
*r
, const BIGNUM
*range
, unsigned int strength
,
225 int BN_rand_range(BIGNUM
*rnd
, const BIGNUM
*range
);
226 int BN_priv_rand_range_ex(BIGNUM
*r
, const BIGNUM
*range
,
227 unsigned int strength
, BN_CTX
*ctx
);
228 int BN_priv_rand_range(BIGNUM
*rnd
, const BIGNUM
*range
);
229 # ifndef OPENSSL_NO_DEPRECATED_3_0
230 OSSL_DEPRECATEDIN_3_0
231 int BN_pseudo_rand(BIGNUM
*rnd
, int bits
, int top
, int bottom
);
232 OSSL_DEPRECATEDIN_3_0
233 int BN_pseudo_rand_range(BIGNUM
*rnd
, const BIGNUM
*range
);
235 int BN_num_bits(const BIGNUM
*a
);
236 int BN_num_bits_word(BN_ULONG l
);
237 int BN_security_bits(int L
, int N
);
238 BIGNUM
*BN_new(void);
239 BIGNUM
*BN_secure_new(void);
240 void BN_clear_free(BIGNUM
*a
);
241 BIGNUM
*BN_copy(BIGNUM
*a
, const BIGNUM
*b
);
242 void BN_swap(BIGNUM
*a
, BIGNUM
*b
);
243 BIGNUM
*BN_bin2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
244 BIGNUM
*BN_signed_bin2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
245 int BN_bn2bin(const BIGNUM
*a
, unsigned char *to
);
246 int BN_bn2binpad(const BIGNUM
*a
, unsigned char *to
, int tolen
);
247 int BN_signed_bn2bin(const BIGNUM
*a
, unsigned char *to
, int tolen
);
248 BIGNUM
*BN_lebin2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
249 BIGNUM
*BN_signed_lebin2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
250 int BN_bn2lebinpad(const BIGNUM
*a
, unsigned char *to
, int tolen
);
251 int BN_signed_bn2lebin(const BIGNUM
*a
, unsigned char *to
, int tolen
);
252 BIGNUM
*BN_native2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
253 BIGNUM
*BN_signed_native2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
254 int BN_bn2nativepad(const BIGNUM
*a
, unsigned char *to
, int tolen
);
255 int BN_signed_bn2native(const BIGNUM
*a
, unsigned char *to
, int tolen
);
256 BIGNUM
*BN_mpi2bn(const unsigned char *s
, int len
, BIGNUM
*ret
);
257 int BN_bn2mpi(const BIGNUM
*a
, unsigned char *to
);
258 int BN_sub(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
);
259 int BN_usub(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
);
260 int BN_uadd(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
);
261 int BN_add(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
);
262 int BN_mul(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
, BN_CTX
*ctx
);
263 int BN_sqr(BIGNUM
*r
, const BIGNUM
*a
, BN_CTX
*ctx
);
264 /** BN_set_negative sets sign of a BIGNUM
265 * \param b pointer to the BIGNUM object
266 * \param n 0 if the BIGNUM b should be positive and a value != 0 otherwise
268 void BN_set_negative(BIGNUM
*b
, int n
);
269 /** BN_is_negative returns 1 if the BIGNUM is negative
270 * \param b pointer to the BIGNUM object
271 * \return 1 if a < 0 and 0 otherwise
273 int BN_is_negative(const BIGNUM
*b
);
275 int BN_div(BIGNUM
*dv
, BIGNUM
*rem
, const BIGNUM
*m
, const BIGNUM
*d
,
277 # define BN_mod(rem,m,d,ctx) BN_div(NULL,(rem),(m),(d),(ctx))
278 int BN_nnmod(BIGNUM
*r
, const BIGNUM
*m
, const BIGNUM
*d
, BN_CTX
*ctx
);
279 int BN_mod_add(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
, const BIGNUM
*m
,
281 int BN_mod_add_quick(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
283 int BN_mod_sub(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
, const BIGNUM
*m
,
285 int BN_mod_sub_quick(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
287 int BN_mod_mul(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
, const BIGNUM
*m
,
289 int BN_mod_sqr(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*m
, BN_CTX
*ctx
);
290 int BN_mod_lshift1(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*m
, BN_CTX
*ctx
);
291 int BN_mod_lshift1_quick(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*m
);
292 int BN_mod_lshift(BIGNUM
*r
, const BIGNUM
*a
, int n
, const BIGNUM
*m
,
294 int BN_mod_lshift_quick(BIGNUM
*r
, const BIGNUM
*a
, int n
, const BIGNUM
*m
);
296 BN_ULONG
BN_mod_word(const BIGNUM
*a
, BN_ULONG w
);
297 BN_ULONG
BN_div_word(BIGNUM
*a
, BN_ULONG w
);
298 int BN_mul_word(BIGNUM
*a
, BN_ULONG w
);
299 int BN_add_word(BIGNUM
*a
, BN_ULONG w
);
300 int BN_sub_word(BIGNUM
*a
, BN_ULONG w
);
301 int BN_set_word(BIGNUM
*a
, BN_ULONG w
);
302 BN_ULONG
BN_get_word(const BIGNUM
*a
);
304 int BN_cmp(const BIGNUM
*a
, const BIGNUM
*b
);
305 void BN_free(BIGNUM
*a
);
306 int BN_is_bit_set(const BIGNUM
*a
, int n
);
307 int BN_lshift(BIGNUM
*r
, const BIGNUM
*a
, int n
);
308 int BN_lshift1(BIGNUM
*r
, const BIGNUM
*a
);
309 int BN_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
311 int BN_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
312 const BIGNUM
*m
, BN_CTX
*ctx
);
313 int BN_mod_exp_mont(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
314 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
315 int BN_mod_exp_mont_consttime(BIGNUM
*rr
, const BIGNUM
*a
, const BIGNUM
*p
,
316 const BIGNUM
*m
, BN_CTX
*ctx
,
317 BN_MONT_CTX
*in_mont
);
318 int BN_mod_exp_mont_word(BIGNUM
*r
, BN_ULONG a
, const BIGNUM
*p
,
319 const BIGNUM
*m
, BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
320 int BN_mod_exp2_mont(BIGNUM
*r
, const BIGNUM
*a1
, const BIGNUM
*p1
,
321 const BIGNUM
*a2
, const BIGNUM
*p2
, const BIGNUM
*m
,
322 BN_CTX
*ctx
, BN_MONT_CTX
*m_ctx
);
323 int BN_mod_exp_simple(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
324 const BIGNUM
*m
, BN_CTX
*ctx
);
325 int BN_mod_exp_mont_consttime_x2(BIGNUM
*rr1
, const BIGNUM
*a1
, const BIGNUM
*p1
,
326 const BIGNUM
*m1
, BN_MONT_CTX
*in_mont1
,
327 BIGNUM
*rr2
, const BIGNUM
*a2
, const BIGNUM
*p2
,
328 const BIGNUM
*m2
, BN_MONT_CTX
*in_mont2
,
331 int BN_mask_bits(BIGNUM
*a
, int n
);
332 # ifndef OPENSSL_NO_STDIO
333 int BN_print_fp(FILE *fp
, const BIGNUM
*a
);
335 int BN_print(BIO
*bio
, const BIGNUM
*a
);
336 int BN_reciprocal(BIGNUM
*r
, const BIGNUM
*m
, int len
, BN_CTX
*ctx
);
337 int BN_rshift(BIGNUM
*r
, const BIGNUM
*a
, int n
);
338 int BN_rshift1(BIGNUM
*r
, const BIGNUM
*a
);
339 void BN_clear(BIGNUM
*a
);
340 BIGNUM
*BN_dup(const BIGNUM
*a
);
341 int BN_ucmp(const BIGNUM
*a
, const BIGNUM
*b
);
342 int BN_set_bit(BIGNUM
*a
, int n
);
343 int BN_clear_bit(BIGNUM
*a
, int n
);
344 char *BN_bn2hex(const BIGNUM
*a
);
345 char *BN_bn2dec(const BIGNUM
*a
);
346 int BN_hex2bn(BIGNUM
**a
, const char *str
);
347 int BN_dec2bn(BIGNUM
**a
, const char *str
);
348 int BN_asc2bn(BIGNUM
**a
, const char *str
);
349 int BN_gcd(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
, BN_CTX
*ctx
);
350 int BN_kronecker(const BIGNUM
*a
, const BIGNUM
*b
, BN_CTX
*ctx
); /* returns
353 int BN_are_coprime(BIGNUM
*a
, const BIGNUM
*b
, BN_CTX
*ctx
);
354 BIGNUM
*BN_mod_inverse(BIGNUM
*ret
,
355 const BIGNUM
*a
, const BIGNUM
*n
, BN_CTX
*ctx
);
356 BIGNUM
*BN_mod_sqrt(BIGNUM
*ret
,
357 const BIGNUM
*a
, const BIGNUM
*n
, BN_CTX
*ctx
);
359 void BN_consttime_swap(BN_ULONG swap
, BIGNUM
*a
, BIGNUM
*b
, int nwords
);
361 /* Deprecated versions */
362 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
363 OSSL_DEPRECATEDIN_0_9_8
364 BIGNUM
*BN_generate_prime(BIGNUM
*ret
, int bits
, int safe
,
365 const BIGNUM
*add
, const BIGNUM
*rem
,
366 void (*callback
) (int, int, void *),
368 OSSL_DEPRECATEDIN_0_9_8
369 int BN_is_prime(const BIGNUM
*p
, int nchecks
,
370 void (*callback
) (int, int, void *),
371 BN_CTX
*ctx
, void *cb_arg
);
372 OSSL_DEPRECATEDIN_0_9_8
373 int BN_is_prime_fasttest(const BIGNUM
*p
, int nchecks
,
374 void (*callback
) (int, int, void *),
375 BN_CTX
*ctx
, void *cb_arg
,
376 int do_trial_division
);
378 # ifndef OPENSSL_NO_DEPRECATED_3_0
379 OSSL_DEPRECATEDIN_3_0
380 int BN_is_prime_ex(const BIGNUM
*p
, int nchecks
, BN_CTX
*ctx
, BN_GENCB
*cb
);
381 OSSL_DEPRECATEDIN_3_0
382 int BN_is_prime_fasttest_ex(const BIGNUM
*p
, int nchecks
, BN_CTX
*ctx
,
383 int do_trial_division
, BN_GENCB
*cb
);
386 int BN_generate_prime_ex2(BIGNUM
*ret
, int bits
, int safe
,
387 const BIGNUM
*add
, const BIGNUM
*rem
, BN_GENCB
*cb
,
389 int BN_generate_prime_ex(BIGNUM
*ret
, int bits
, int safe
, const BIGNUM
*add
,
390 const BIGNUM
*rem
, BN_GENCB
*cb
);
391 int BN_check_prime(const BIGNUM
*p
, BN_CTX
*ctx
, BN_GENCB
*cb
);
393 # ifndef OPENSSL_NO_DEPRECATED_3_0
394 OSSL_DEPRECATEDIN_3_0
395 int BN_X931_generate_Xpq(BIGNUM
*Xp
, BIGNUM
*Xq
, int nbits
, BN_CTX
*ctx
);
397 OSSL_DEPRECATEDIN_3_0
398 int BN_X931_derive_prime_ex(BIGNUM
*p
, BIGNUM
*p1
, BIGNUM
*p2
,
399 const BIGNUM
*Xp
, const BIGNUM
*Xp1
,
400 const BIGNUM
*Xp2
, const BIGNUM
*e
, BN_CTX
*ctx
,
402 OSSL_DEPRECATEDIN_3_0
403 int BN_X931_generate_prime_ex(BIGNUM
*p
, BIGNUM
*p1
, BIGNUM
*p2
, BIGNUM
*Xp1
,
404 BIGNUM
*Xp2
, const BIGNUM
*Xp
, const BIGNUM
*e
,
405 BN_CTX
*ctx
, BN_GENCB
*cb
);
408 BN_MONT_CTX
*BN_MONT_CTX_new(void);
409 int BN_mod_mul_montgomery(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
410 BN_MONT_CTX
*mont
, BN_CTX
*ctx
);
411 int BN_to_montgomery(BIGNUM
*r
, const BIGNUM
*a
, BN_MONT_CTX
*mont
,
413 int BN_from_montgomery(BIGNUM
*r
, const BIGNUM
*a
, BN_MONT_CTX
*mont
,
415 void BN_MONT_CTX_free(BN_MONT_CTX
*mont
);
416 int BN_MONT_CTX_set(BN_MONT_CTX
*mont
, const BIGNUM
*mod
, BN_CTX
*ctx
);
417 BN_MONT_CTX
*BN_MONT_CTX_copy(BN_MONT_CTX
*to
, BN_MONT_CTX
*from
);
418 BN_MONT_CTX
*BN_MONT_CTX_set_locked(BN_MONT_CTX
**pmont
, CRYPTO_RWLOCK
*lock
,
419 const BIGNUM
*mod
, BN_CTX
*ctx
);
421 /* BN_BLINDING flags */
422 # define BN_BLINDING_NO_UPDATE 0x00000001
423 # define BN_BLINDING_NO_RECREATE 0x00000002
425 BN_BLINDING
*BN_BLINDING_new(const BIGNUM
*A
, const BIGNUM
*Ai
, BIGNUM
*mod
);
426 void BN_BLINDING_free(BN_BLINDING
*b
);
427 int BN_BLINDING_update(BN_BLINDING
*b
, BN_CTX
*ctx
);
428 int BN_BLINDING_convert(BIGNUM
*n
, BN_BLINDING
*b
, BN_CTX
*ctx
);
429 int BN_BLINDING_invert(BIGNUM
*n
, BN_BLINDING
*b
, BN_CTX
*ctx
);
430 int BN_BLINDING_convert_ex(BIGNUM
*n
, BIGNUM
*r
, BN_BLINDING
*b
, BN_CTX
*);
431 int BN_BLINDING_invert_ex(BIGNUM
*n
, const BIGNUM
*r
, BN_BLINDING
*b
,
434 int BN_BLINDING_is_current_thread(BN_BLINDING
*b
);
435 void BN_BLINDING_set_current_thread(BN_BLINDING
*b
);
436 int BN_BLINDING_lock(BN_BLINDING
*b
);
437 int BN_BLINDING_unlock(BN_BLINDING
*b
);
439 unsigned long BN_BLINDING_get_flags(const BN_BLINDING
*);
440 void BN_BLINDING_set_flags(BN_BLINDING
*, unsigned long);
441 BN_BLINDING
*BN_BLINDING_create_param(BN_BLINDING
*b
,
442 const BIGNUM
*e
, BIGNUM
*m
, BN_CTX
*ctx
,
443 int (*bn_mod_exp
) (BIGNUM
*r
,
450 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
451 OSSL_DEPRECATEDIN_0_9_8
452 void BN_set_params(int mul
, int high
, int low
, int mont
);
453 OSSL_DEPRECATEDIN_0_9_8
454 int BN_get_params(int which
); /* 0, mul, 1 high, 2 low, 3 mont */
457 BN_RECP_CTX
*BN_RECP_CTX_new(void);
458 void BN_RECP_CTX_free(BN_RECP_CTX
*recp
);
459 int BN_RECP_CTX_set(BN_RECP_CTX
*recp
, const BIGNUM
*rdiv
, BN_CTX
*ctx
);
460 int BN_mod_mul_reciprocal(BIGNUM
*r
, const BIGNUM
*x
, const BIGNUM
*y
,
461 BN_RECP_CTX
*recp
, BN_CTX
*ctx
);
462 int BN_mod_exp_recp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
463 const BIGNUM
*m
, BN_CTX
*ctx
);
464 int BN_div_recp(BIGNUM
*dv
, BIGNUM
*rem
, const BIGNUM
*m
,
465 BN_RECP_CTX
*recp
, BN_CTX
*ctx
);
467 # ifndef OPENSSL_NO_EC2M
470 * Functions for arithmetic over binary polynomials represented by BIGNUMs.
471 * The BIGNUM::neg property of BIGNUMs representing binary polynomials is
472 * ignored. Note that input arguments are not const so that their bit arrays
473 * can be expanded to the appropriate size if needed.
479 int BN_GF2m_add(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
);
480 # define BN_GF2m_sub(r, a, b) BN_GF2m_add(r, a, b)
484 int BN_GF2m_mod(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
);
485 /* r = (a * b) mod p */
486 int BN_GF2m_mod_mul(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
487 const BIGNUM
*p
, BN_CTX
*ctx
);
488 /* r = (a * a) mod p */
489 int BN_GF2m_mod_sqr(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
490 /* r = (1 / b) mod p */
491 int BN_GF2m_mod_inv(BIGNUM
*r
, const BIGNUM
*b
, const BIGNUM
*p
, BN_CTX
*ctx
);
492 /* r = (a / b) mod p */
493 int BN_GF2m_mod_div(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
494 const BIGNUM
*p
, BN_CTX
*ctx
);
495 /* r = (a ^ b) mod p */
496 int BN_GF2m_mod_exp(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
497 const BIGNUM
*p
, BN_CTX
*ctx
);
498 /* r = sqrt(a) mod p */
499 int BN_GF2m_mod_sqrt(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
501 /* r^2 + r = a mod p */
502 int BN_GF2m_mod_solve_quad(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
,
504 # define BN_GF2m_cmp(a, b) BN_ucmp((a), (b))
506 * Some functions allow for representation of the irreducible polynomials
507 * as an unsigned int[], say p. The irreducible f(t) is then of the form:
508 * t^p[0] + t^p[1] + ... + t^p[k]
509 * where m = p[0] > p[1] > ... > p[k] = 0.
512 int BN_GF2m_mod_arr(BIGNUM
*r
, const BIGNUM
*a
, const int p
[]);
513 /* r = (a * b) mod p */
514 int BN_GF2m_mod_mul_arr(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
515 const int p
[], BN_CTX
*ctx
);
516 /* r = (a * a) mod p */
517 int BN_GF2m_mod_sqr_arr(BIGNUM
*r
, const BIGNUM
*a
, const int p
[],
519 /* r = (1 / b) mod p */
520 int BN_GF2m_mod_inv_arr(BIGNUM
*r
, const BIGNUM
*b
, const int p
[],
522 /* r = (a / b) mod p */
523 int BN_GF2m_mod_div_arr(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
524 const int p
[], BN_CTX
*ctx
);
525 /* r = (a ^ b) mod p */
526 int BN_GF2m_mod_exp_arr(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*b
,
527 const int p
[], BN_CTX
*ctx
);
528 /* r = sqrt(a) mod p */
529 int BN_GF2m_mod_sqrt_arr(BIGNUM
*r
, const BIGNUM
*a
,
530 const int p
[], BN_CTX
*ctx
);
531 /* r^2 + r = a mod p */
532 int BN_GF2m_mod_solve_quad_arr(BIGNUM
*r
, const BIGNUM
*a
,
533 const int p
[], BN_CTX
*ctx
);
534 int BN_GF2m_poly2arr(const BIGNUM
*a
, int p
[], int max
);
535 int BN_GF2m_arr2poly(const int p
[], BIGNUM
*a
);
540 * faster mod functions for the 'NIST primes' 0 <= a < p^2
542 int BN_nist_mod_192(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
543 int BN_nist_mod_224(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
544 int BN_nist_mod_256(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
545 int BN_nist_mod_384(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
546 int BN_nist_mod_521(BIGNUM
*r
, const BIGNUM
*a
, const BIGNUM
*p
, BN_CTX
*ctx
);
548 const BIGNUM
*BN_get0_nist_prime_192(void);
549 const BIGNUM
*BN_get0_nist_prime_224(void);
550 const BIGNUM
*BN_get0_nist_prime_256(void);
551 const BIGNUM
*BN_get0_nist_prime_384(void);
552 const BIGNUM
*BN_get0_nist_prime_521(void);
554 int (*BN_nist_mod_func(const BIGNUM
*p
)) (BIGNUM
*r
, const BIGNUM
*a
,
555 const BIGNUM
*field
, BN_CTX
*ctx
);
557 int BN_generate_dsa_nonce(BIGNUM
*out
, const BIGNUM
*range
,
558 const BIGNUM
*priv
, const unsigned char *message
,
559 size_t message_len
, BN_CTX
*ctx
);
561 /* Primes from RFC 2409 */
562 BIGNUM
*BN_get_rfc2409_prime_768(BIGNUM
*bn
);
563 BIGNUM
*BN_get_rfc2409_prime_1024(BIGNUM
*bn
);
565 /* Primes from RFC 3526 */
566 BIGNUM
*BN_get_rfc3526_prime_1536(BIGNUM
*bn
);
567 BIGNUM
*BN_get_rfc3526_prime_2048(BIGNUM
*bn
);
568 BIGNUM
*BN_get_rfc3526_prime_3072(BIGNUM
*bn
);
569 BIGNUM
*BN_get_rfc3526_prime_4096(BIGNUM
*bn
);
570 BIGNUM
*BN_get_rfc3526_prime_6144(BIGNUM
*bn
);
571 BIGNUM
*BN_get_rfc3526_prime_8192(BIGNUM
*bn
);
573 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
574 # define get_rfc2409_prime_768 BN_get_rfc2409_prime_768
575 # define get_rfc2409_prime_1024 BN_get_rfc2409_prime_1024
576 # define get_rfc3526_prime_1536 BN_get_rfc3526_prime_1536
577 # define get_rfc3526_prime_2048 BN_get_rfc3526_prime_2048
578 # define get_rfc3526_prime_3072 BN_get_rfc3526_prime_3072
579 # define get_rfc3526_prime_4096 BN_get_rfc3526_prime_4096
580 # define get_rfc3526_prime_6144 BN_get_rfc3526_prime_6144
581 # define get_rfc3526_prime_8192 BN_get_rfc3526_prime_8192
584 int BN_bntest_rand(BIGNUM
*rnd
, int bits
, int top
, int bottom
);