2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 # define OPENSSL_RSA_H
14 # include <openssl/macros.h>
19 # include <openssl/opensslconf.h>
21 # ifndef OPENSSL_NO_RSA
22 # include <openssl/asn1.h>
23 # include <openssl/bio.h>
24 # include <openssl/crypto.h>
25 # include <openssl/types.h>
26 # if !OPENSSL_API_1_1_0
27 # include <openssl/bn.h>
29 # include <openssl/rsaerr.h>
34 /* The types RSA and RSA_METHOD are defined in ossl_typ.h */
36 # ifndef OPENSSL_RSA_MAX_MODULUS_BITS
37 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384
40 # define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024
42 # ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
43 # define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
45 # ifndef OPENSSL_RSA_MAX_PUBEXP_BITS
47 /* exponent limit enforced for "large" modulus only */
48 # define OPENSSL_RSA_MAX_PUBEXP_BITS 64
52 # define RSA_F4 0x10001L
54 /* based on RFC 8017 appendix A.1.2 */
55 # define RSA_ASN1_VERSION_DEFAULT 0
56 # define RSA_ASN1_VERSION_MULTI 1
58 # define RSA_DEFAULT_PRIME_NUM 2
60 # define RSA_METHOD_FLAG_NO_CHECK 0x0001/* don't check pub/private
63 # define RSA_FLAG_CACHE_PUBLIC 0x0002
64 # define RSA_FLAG_CACHE_PRIVATE 0x0004
65 # define RSA_FLAG_BLINDING 0x0008
66 # define RSA_FLAG_THREAD_SAFE 0x0010
68 * This flag means the private key operations will be handled by rsa_mod_exp
69 * and that they do not depend on the private key components being present:
70 * for example a key stored in external hardware. Without this flag
71 * bn_mod_exp gets called when private key components are absent.
73 # define RSA_FLAG_EXT_PKEY 0x0020
76 * new with 0.9.6j and 0.9.7b; the built-in
77 * RSA implementation now uses blinding by
78 * default (ignoring RSA_FLAG_BLINDING),
79 * but other engines might not need it
81 # define RSA_FLAG_NO_BLINDING 0x0080
82 # if !OPENSSL_API_1_1_0
84 * Does nothing. Previously this switched off constant time behaviour.
86 # define RSA_FLAG_NO_CONSTTIME 0x0000
88 # if !OPENSSL_API_0_9_8
89 /* deprecated name for the flag*/
91 * new with 0.9.7h; the built-in RSA
92 * implementation now uses constant time
93 * modular exponentiation for secret exponents
94 * by default. This flag causes the
95 * faster variable sliding window method to
96 * be used for all exponents.
98 # define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
101 # define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
102 RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_RSA_PADDING, pad, NULL)
104 # define EVP_PKEY_CTX_get_rsa_padding(ctx, ppad) \
105 RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, ppad)
107 # define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \
108 RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
109 EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
110 /* Salt length matches digest */
111 # define RSA_PSS_SALTLEN_DIGEST -1
112 /* Verify only: auto detect salt length */
113 # define RSA_PSS_SALTLEN_AUTO -2
114 /* Set salt length to maximum possible */
115 # define RSA_PSS_SALTLEN_MAX -3
116 /* Old compatible max salt length for sign only */
117 # define RSA_PSS_SALTLEN_MAX_SIGN -2
119 # define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \
120 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
121 EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
123 # define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \
124 RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
125 EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, plen)
127 # define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \
128 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
129 EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL)
131 # define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \
132 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
133 EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp)
135 # define EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, primes) \
136 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
137 EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES, primes, NULL)
139 # define EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md) \
140 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
141 EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))
143 # define EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(ctx, md) \
144 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
145 EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))
147 # define EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md) \
148 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \
149 EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)(md))
151 # define EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \
152 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
153 EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)(pmd))
155 # define EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \
156 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \
157 EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)(pmd))
159 # define EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \
160 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \
161 EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)(l))
163 # define EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l) \
164 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \
165 EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void *)(l))
167 # define EVP_PKEY_CTX_set_rsa_pss_keygen_md(ctx, md) \
168 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, \
169 EVP_PKEY_OP_KEYGEN, EVP_PKEY_CTRL_MD, \
172 # define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
173 # define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 2)
175 # define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 3)
176 # define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
177 # define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 5)
179 # define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 6)
180 # define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 7)
181 # define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 8)
183 # define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 9)
184 # define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 10)
186 # define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 11)
187 # define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
189 # define EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES (EVP_PKEY_ALG_CTRL + 13)
191 # define RSA_PKCS1_PADDING 1
192 # define RSA_SSLV23_PADDING 2
193 # define RSA_NO_PADDING 3
194 # define RSA_PKCS1_OAEP_PADDING 4
195 # define RSA_X931_PADDING 5
197 # define RSA_PKCS1_PSS_PADDING 6
199 # define RSA_PKCS1_PADDING_SIZE 11
201 # define RSA_set_app_data(s,arg) RSA_set_ex_data(s,0,arg)
202 # define RSA_get_app_data(s) RSA_get_ex_data(s,0)
205 RSA *RSA_new_method(ENGINE *engine);
206 int RSA_bits(const RSA *rsa);
207 int RSA_size(const RSA *rsa);
208 int RSA_security_bits(const RSA *rsa);
210 int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
211 int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
212 int RSA_set0_crt_params(RSA *r,BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
213 int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[],
214 BIGNUM *coeffs[], int pnum);
215 void RSA_get0_key(const RSA *r,
216 const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
217 void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
218 int RSA_get_multi_prime_extra_count(const RSA *r);
219 int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[]);
220 void RSA_get0_crt_params(const RSA *r,
221 const BIGNUM **dmp1, const BIGNUM **dmq1,
222 const BIGNUM **iqmp);
223 int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[],
224 const BIGNUM *coeffs[]);
225 const BIGNUM *RSA_get0_n(const RSA *d);
226 const BIGNUM *RSA_get0_e(const RSA *d);
227 const BIGNUM *RSA_get0_d(const RSA *d);
228 const BIGNUM *RSA_get0_p(const RSA *d);
229 const BIGNUM *RSA_get0_q(const RSA *d);
230 const BIGNUM *RSA_get0_dmp1(const RSA *r);
231 const BIGNUM *RSA_get0_dmq1(const RSA *r);
232 const BIGNUM *RSA_get0_iqmp(const RSA *r);
233 void RSA_clear_flags(RSA *r, int flags);
234 int RSA_test_flags(const RSA *r, int flags);
235 void RSA_set_flags(RSA *r, int flags);
236 int RSA_get_version(RSA *r);
237 ENGINE *RSA_get0_engine(const RSA *r);
239 /* Deprecated version */
240 DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
241 (*callback) (int, int, void *),
245 int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
246 /* Multi-prime version */
247 int RSA_generate_multi_prime_key(RSA *rsa, int bits, int primes,
248 BIGNUM *e, BN_GENCB *cb);
250 int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
251 BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
252 const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
253 const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb);
254 int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
257 int RSA_check_key(const RSA *);
258 int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
259 /* next 4 return -1 on error */
260 int RSA_public_encrypt(int flen, const unsigned char *from,
261 unsigned char *to, RSA *rsa, int padding);
262 int RSA_private_encrypt(int flen, const unsigned char *from,
263 unsigned char *to, RSA *rsa, int padding);
264 int RSA_public_decrypt(int flen, const unsigned char *from,
265 unsigned char *to, RSA *rsa, int padding);
266 int RSA_private_decrypt(int flen, const unsigned char *from,
267 unsigned char *to, RSA *rsa, int padding);
268 void RSA_free(RSA *r);
269 /* "up" the RSA object's reference count */
270 int RSA_up_ref(RSA *r);
272 int RSA_flags(const RSA *r);
274 void RSA_set_default_method(const RSA_METHOD *meth);
275 const RSA_METHOD *RSA_get_default_method(void);
276 const RSA_METHOD *RSA_null_method(void);
277 const RSA_METHOD *RSA_get_method(const RSA *rsa);
278 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
280 /* these are the actual RSA functions */
281 const RSA_METHOD *RSA_PKCS1_OpenSSL(void);
283 int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2);
285 DECLARE_ASN1_ENCODE_FUNCTIONS_name(RSA, RSAPublicKey)
286 DECLARE_ASN1_ENCODE_FUNCTIONS_name(RSA, RSAPrivateKey)
288 typedef struct rsa_pss_params_st {
289 X509_ALGOR *hashAlgorithm;
290 X509_ALGOR *maskGenAlgorithm;
291 ASN1_INTEGER *saltLength;
292 ASN1_INTEGER *trailerField;
293 /* Decoded hash algorithm from maskGenAlgorithm */
294 X509_ALGOR *maskHash;
297 DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
299 typedef struct rsa_oaep_params_st {
300 X509_ALGOR *hashFunc;
301 X509_ALGOR *maskGenFunc;
302 X509_ALGOR *pSourceFunc;
303 /* Decoded hash algorithm from maskGenFunc */
304 X509_ALGOR *maskHash;
307 DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
309 # ifndef OPENSSL_NO_STDIO
310 int RSA_print_fp(FILE *fp, const RSA *r, int offset);
313 int RSA_print(BIO *bp, const RSA *r, int offset);
316 * The following 2 functions sign and verify a X509_SIG ASN1 object inside
317 * PKCS#1 padded RSA encryption
319 int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
320 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
321 int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
322 const unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
325 * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
326 * PKCS#1 padded RSA encryption
328 int RSA_sign_ASN1_OCTET_STRING(int type,
329 const unsigned char *m, unsigned int m_length,
330 unsigned char *sigret, unsigned int *siglen,
332 int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
333 unsigned int m_length, unsigned char *sigbuf,
334 unsigned int siglen, RSA *rsa);
336 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
337 void RSA_blinding_off(RSA *rsa);
338 BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);
340 int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
341 const unsigned char *f, int fl);
342 int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
343 const unsigned char *f, int fl,
345 int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
346 const unsigned char *f, int fl);
347 int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
348 const unsigned char *f, int fl,
350 int PKCS1_MGF1(unsigned char *mask, long len, const unsigned char *seed,
351 long seedlen, const EVP_MD *dgst);
352 int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
353 const unsigned char *f, int fl,
354 const unsigned char *p, int pl);
355 int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
356 const unsigned char *f, int fl, int rsa_len,
357 const unsigned char *p, int pl);
358 int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
359 const unsigned char *from, int flen,
360 const unsigned char *param, int plen,
361 const EVP_MD *md, const EVP_MD *mgf1md);
362 int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
363 const unsigned char *from, int flen,
364 int num, const unsigned char *param,
365 int plen, const EVP_MD *md,
366 const EVP_MD *mgf1md);
367 int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
368 const unsigned char *f, int fl);
369 int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
370 const unsigned char *f, int fl, int rsa_len);
371 int RSA_padding_add_none(unsigned char *to, int tlen, const unsigned char *f,
373 int RSA_padding_check_none(unsigned char *to, int tlen,
374 const unsigned char *f, int fl, int rsa_len);
375 int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f,
377 int RSA_padding_check_X931(unsigned char *to, int tlen,
378 const unsigned char *f, int fl, int rsa_len);
379 int RSA_X931_hash_id(int nid);
381 int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
382 const EVP_MD *Hash, const unsigned char *EM,
384 int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
385 const unsigned char *mHash, const EVP_MD *Hash,
388 int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
389 const EVP_MD *Hash, const EVP_MD *mgf1Hash,
390 const unsigned char *EM, int sLen);
392 int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
393 const unsigned char *mHash,
394 const EVP_MD *Hash, const EVP_MD *mgf1Hash,
397 #define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
398 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
399 int RSA_set_ex_data(RSA *r, int idx, void *arg);
400 void *RSA_get_ex_data(const RSA *r, int idx);
402 DECLARE_ASN1_DUP_FUNCTION_name(RSA, RSAPublicKey)
403 DECLARE_ASN1_DUP_FUNCTION_name(RSA, RSAPrivateKey)
406 * If this flag is set the RSA method is FIPS compliant and can be used in
407 * FIPS mode. This is set in the validated module method. If an application
408 * sets this flag in its own methods it is its responsibility to ensure the
409 * result is compliant.
412 # define RSA_FLAG_FIPS_METHOD 0x0400
415 * If this flag is set the operations normally disabled in FIPS mode are
416 * permitted it is then the applications responsibility to ensure that the
417 * usage is compliant.
420 # define RSA_FLAG_NON_FIPS_ALLOW 0x0400
422 * Application has decided PRNG is good enough to generate a key: don't
425 # define RSA_FLAG_CHECKED 0x0800
427 RSA_METHOD *RSA_meth_new(const char *name, int flags);
428 void RSA_meth_free(RSA_METHOD *meth);
429 RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
430 const char *RSA_meth_get0_name(const RSA_METHOD *meth);
431 int RSA_meth_set1_name(RSA_METHOD *meth, const char *name);
432 int RSA_meth_get_flags(const RSA_METHOD *meth);
433 int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
434 void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
435 int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data);
436 int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
437 (int flen, const unsigned char *from,
438 unsigned char *to, RSA *rsa, int padding);
439 int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
440 int (*pub_enc) (int flen, const unsigned char *from,
441 unsigned char *to, RSA *rsa,
443 int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
444 (int flen, const unsigned char *from,
445 unsigned char *to, RSA *rsa, int padding);
446 int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
447 int (*pub_dec) (int flen, const unsigned char *from,
448 unsigned char *to, RSA *rsa,
450 int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
451 (int flen, const unsigned char *from,
452 unsigned char *to, RSA *rsa, int padding);
453 int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
454 int (*priv_enc) (int flen, const unsigned char *from,
455 unsigned char *to, RSA *rsa,
457 int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
458 (int flen, const unsigned char *from,
459 unsigned char *to, RSA *rsa, int padding);
460 int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
461 int (*priv_dec) (int flen, const unsigned char *from,
462 unsigned char *to, RSA *rsa,
464 int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
465 (BIGNUM *r0, const BIGNUM *i, RSA *rsa, BN_CTX *ctx);
466 int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
467 int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa,
469 int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
470 (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
471 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
472 int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
473 int (*bn_mod_exp) (BIGNUM *r,
478 BN_MONT_CTX *m_ctx));
479 int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
480 int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
481 int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
482 int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
483 int (*RSA_meth_get_sign(const RSA_METHOD *meth))
485 const unsigned char *m, unsigned int m_length,
486 unsigned char *sigret, unsigned int *siglen,
488 int RSA_meth_set_sign(RSA_METHOD *rsa,
489 int (*sign) (int type, const unsigned char *m,
490 unsigned int m_length,
491 unsigned char *sigret, unsigned int *siglen,
493 int (*RSA_meth_get_verify(const RSA_METHOD *meth))
494 (int dtype, const unsigned char *m,
495 unsigned int m_length, const unsigned char *sigbuf,
496 unsigned int siglen, const RSA *rsa);
497 int RSA_meth_set_verify(RSA_METHOD *rsa,
498 int (*verify) (int dtype, const unsigned char *m,
499 unsigned int m_length,
500 const unsigned char *sigbuf,
501 unsigned int siglen, const RSA *rsa));
502 int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
503 (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
504 int RSA_meth_set_keygen(RSA_METHOD *rsa,
505 int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
507 int (*RSA_meth_get_multi_prime_keygen(const RSA_METHOD *meth))
508 (RSA *rsa, int bits, int primes, BIGNUM *e, BN_GENCB *cb);
509 int RSA_meth_set_multi_prime_keygen(RSA_METHOD *meth,
510 int (*keygen) (RSA *rsa, int bits,
511 int primes, BIGNUM *e,