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>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
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 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
27 # include <openssl/bn.h>
29 # include <openssl/rsaerr.h>
30 # include <openssl/safestack.h>
36 /* The types RSA and RSA_METHOD are defined in ossl_typ.h */
38 # ifndef OPENSSL_RSA_MAX_MODULUS_BITS
39 # define OPENSSL_RSA_MAX_MODULUS_BITS 16384
42 # define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024
44 # ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
45 # define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
47 # ifndef OPENSSL_RSA_MAX_PUBEXP_BITS
49 /* exponent limit enforced for "large" modulus only */
50 # define OPENSSL_RSA_MAX_PUBEXP_BITS 64
54 # define RSA_F4 0x10001L
56 /* based on RFC 8017 appendix A.1.2 */
57 # define RSA_ASN1_VERSION_DEFAULT 0
58 # define RSA_ASN1_VERSION_MULTI 1
60 # define RSA_DEFAULT_PRIME_NUM 2
62 /* Don't check pub/private match */
63 # define RSA_METHOD_FLAG_NO_CHECK 0x0001
65 # define RSA_FLAG_CACHE_PUBLIC 0x0002
66 # define RSA_FLAG_CACHE_PRIVATE 0x0004
67 # define RSA_FLAG_BLINDING 0x0008
68 # define RSA_FLAG_THREAD_SAFE 0x0010
70 * This flag means the private key operations will be handled by rsa_mod_exp
71 * and that they do not depend on the private key components being present:
72 * for example a key stored in external hardware. Without this flag
73 * bn_mod_exp gets called when private key components are absent.
75 # define RSA_FLAG_EXT_PKEY 0x0020
78 * new with 0.9.6j and 0.9.7b; the built-in
79 * RSA implementation now uses blinding by
80 * default (ignoring RSA_FLAG_BLINDING),
81 * but other engines might not need it
83 # define RSA_FLAG_NO_BLINDING 0x0080
84 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
86 * Does nothing. Previously this switched off constant time behaviour.
88 # define RSA_FLAG_NO_CONSTTIME 0x0000
90 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
91 /* deprecated name for the flag*/
93 * new with 0.9.7h; the built-in RSA
94 * implementation now uses constant time
95 * modular exponentiation for secret exponents
96 * by default. This flag causes the
97 * faster variable sliding window method to
98 * be used for all exponents.
100 # define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
103 int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int pad_mode);
104 int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *pad_mode);
106 # define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \
107 RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
108 EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
109 /* Salt length matches digest */
110 # define RSA_PSS_SALTLEN_DIGEST -1
111 /* Verify only: auto detect salt length */
112 # define RSA_PSS_SALTLEN_AUTO -2
113 /* Set salt length to maximum possible */
114 # define RSA_PSS_SALTLEN_MAX -3
115 /* Old compatible max salt length for sign only */
116 # define RSA_PSS_SALTLEN_MAX_SIGN -2
118 # define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \
119 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
120 EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
122 # define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \
123 RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
124 EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, plen)
126 # define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \
127 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
128 EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL)
130 # define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \
131 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
132 EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp)
134 # define EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, primes) \
135 RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
136 EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES, primes, NULL)
138 int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
139 int EVP_PKEY_CTX_set_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, const char *mdname,
140 const char *mdprops);
141 int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
142 int EVP_PKEY_CTX_get_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, char *name,
146 # define EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(ctx, md) \
147 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
148 EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))
150 int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
151 int EVP_PKEY_CTX_set_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, const char *mdname,
152 const char *mdprops);
153 int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
154 int EVP_PKEY_CTX_get_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, char *name,
156 int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, void *label,
158 int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx, unsigned char **label);
160 # define EVP_PKEY_CTX_set_rsa_pss_keygen_md(ctx, md) \
161 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, \
162 EVP_PKEY_OP_KEYGEN, EVP_PKEY_CTRL_MD, \
166 # define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
167 # define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 2)
169 # define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 3)
170 # define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
171 # define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 5)
173 # define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 6)
174 # define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 7)
175 # define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 8)
177 # define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 9)
178 # define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 10)
180 # define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 11)
181 # define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
183 # define EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES (EVP_PKEY_ALG_CTRL + 13)
185 # define RSA_PKCS1_PADDING 1
186 # define RSA_SSLV23_PADDING 2
187 # define RSA_NO_PADDING 3
188 # define RSA_PKCS1_OAEP_PADDING 4
189 # define RSA_X931_PADDING 5
192 # define RSA_PKCS1_PSS_PADDING 6
193 # define RSA_PKCS1_WITH_TLS_PADDING 7
195 # define RSA_PKCS1_PADDING_SIZE 11
197 # define RSA_set_app_data(s,arg) RSA_set_ex_data(s,0,arg)
198 # define RSA_get_app_data(s) RSA_get_ex_data(s,0)
201 RSA *RSA_new_method(ENGINE *engine);
202 int RSA_bits(const RSA *rsa);
203 int RSA_size(const RSA *rsa);
204 int RSA_security_bits(const RSA *rsa);
206 int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
207 int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
208 int RSA_set0_crt_params(RSA *r,BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
209 int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[],
210 BIGNUM *coeffs[], int pnum);
211 void RSA_get0_key(const RSA *r,
212 const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
213 void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
214 int RSA_get_multi_prime_extra_count(const RSA *r);
215 int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[]);
216 void RSA_get0_crt_params(const RSA *r,
217 const BIGNUM **dmp1, const BIGNUM **dmq1,
218 const BIGNUM **iqmp);
219 int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[],
220 const BIGNUM *coeffs[]);
221 const BIGNUM *RSA_get0_n(const RSA *d);
222 const BIGNUM *RSA_get0_e(const RSA *d);
223 const BIGNUM *RSA_get0_d(const RSA *d);
224 const BIGNUM *RSA_get0_p(const RSA *d);
225 const BIGNUM *RSA_get0_q(const RSA *d);
226 const BIGNUM *RSA_get0_dmp1(const RSA *r);
227 const BIGNUM *RSA_get0_dmq1(const RSA *r);
228 const BIGNUM *RSA_get0_iqmp(const RSA *r);
229 const RSA_PSS_PARAMS *RSA_get0_pss_params(const RSA *r);
230 void RSA_clear_flags(RSA *r, int flags);
231 int RSA_test_flags(const RSA *r, int flags);
232 void RSA_set_flags(RSA *r, int flags);
233 int RSA_get_version(RSA *r);
234 ENGINE *RSA_get0_engine(const RSA *r);
236 /* Deprecated version */
237 DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
238 (*callback) (int, int, void *),
242 int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
243 /* Multi-prime version */
244 int RSA_generate_multi_prime_key(RSA *rsa, int bits, int primes,
245 BIGNUM *e, BN_GENCB *cb);
247 int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
248 BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
249 const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
250 const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb);
251 int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
254 int RSA_check_key(const RSA *);
255 int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
256 /* next 4 return -1 on error */
257 int RSA_public_encrypt(int flen, const unsigned char *from,
258 unsigned char *to, RSA *rsa, int padding);
259 int RSA_private_encrypt(int flen, const unsigned char *from,
260 unsigned char *to, RSA *rsa, int padding);
261 int RSA_public_decrypt(int flen, const unsigned char *from,
262 unsigned char *to, RSA *rsa, int padding);
263 int RSA_private_decrypt(int flen, const unsigned char *from,
264 unsigned char *to, RSA *rsa, int padding);
265 void RSA_free(RSA *r);
266 /* "up" the RSA object's reference count */
267 int RSA_up_ref(RSA *r);
269 int RSA_flags(const RSA *r);
271 void RSA_set_default_method(const RSA_METHOD *meth);
272 const RSA_METHOD *RSA_get_default_method(void);
273 const RSA_METHOD *RSA_null_method(void);
274 const RSA_METHOD *RSA_get_method(const RSA *rsa);
275 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
277 /* these are the actual RSA functions */
278 const RSA_METHOD *RSA_PKCS1_OpenSSL(void);
280 int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2);
282 DECLARE_ASN1_ENCODE_FUNCTIONS_name(RSA, RSAPublicKey)
283 DECLARE_ASN1_ENCODE_FUNCTIONS_name(RSA, RSAPrivateKey)
285 struct rsa_pss_params_st {
286 X509_ALGOR *hashAlgorithm;
287 X509_ALGOR *maskGenAlgorithm;
288 ASN1_INTEGER *saltLength;
289 ASN1_INTEGER *trailerField;
290 /* Decoded hash algorithm from maskGenAlgorithm */
291 X509_ALGOR *maskHash;
294 DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
296 typedef struct rsa_oaep_params_st {
297 X509_ALGOR *hashFunc;
298 X509_ALGOR *maskGenFunc;
299 X509_ALGOR *pSourceFunc;
300 /* Decoded hash algorithm from maskGenFunc */
301 X509_ALGOR *maskHash;
304 DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
306 # ifndef OPENSSL_NO_STDIO
307 int RSA_print_fp(FILE *fp, const RSA *r, int offset);
310 int RSA_print(BIO *bp, const RSA *r, int offset);
313 * The following 2 functions sign and verify a X509_SIG ASN1 object inside
314 * PKCS#1 padded RSA encryption
316 int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
317 unsigned char *sigret, unsigned int *siglen, RSA *rsa);
318 int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
319 const unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
322 * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
323 * PKCS#1 padded RSA encryption
325 int RSA_sign_ASN1_OCTET_STRING(int type,
326 const unsigned char *m, unsigned int m_length,
327 unsigned char *sigret, unsigned int *siglen,
329 int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
330 unsigned int m_length, unsigned char *sigbuf,
331 unsigned int siglen, RSA *rsa);
333 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
334 void RSA_blinding_off(RSA *rsa);
335 BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);
337 int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
338 const unsigned char *f, int fl);
339 int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
340 const unsigned char *f, int fl,
342 int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
343 const unsigned char *f, int fl);
344 int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
345 const unsigned char *f, int fl,
347 int PKCS1_MGF1(unsigned char *mask, long len, const unsigned char *seed,
348 long seedlen, const EVP_MD *dgst);
349 int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
350 const unsigned char *f, int fl,
351 const unsigned char *p, int pl);
352 int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
353 const unsigned char *f, int fl, int rsa_len,
354 const unsigned char *p, int pl);
355 int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
356 const unsigned char *from, int flen,
357 const unsigned char *param, int plen,
358 const EVP_MD *md, const EVP_MD *mgf1md);
359 int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
360 const unsigned char *from, int flen,
361 int num, const unsigned char *param,
362 int plen, const EVP_MD *md,
363 const EVP_MD *mgf1md);
364 int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
365 const unsigned char *f, int fl);
366 int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
367 const unsigned char *f, int fl, int rsa_len);
368 int RSA_padding_add_none(unsigned char *to, int tlen, const unsigned char *f,
370 int RSA_padding_check_none(unsigned char *to, int tlen,
371 const unsigned char *f, int fl, int rsa_len);
372 int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f,
374 int RSA_padding_check_X931(unsigned char *to, int tlen,
375 const unsigned char *f, int fl, int rsa_len);
376 int RSA_X931_hash_id(int nid);
378 int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
379 const EVP_MD *Hash, const unsigned char *EM,
381 int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
382 const unsigned char *mHash, const EVP_MD *Hash,
385 int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
386 const EVP_MD *Hash, const EVP_MD *mgf1Hash,
387 const unsigned char *EM, int sLen);
389 int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
390 const unsigned char *mHash,
391 const EVP_MD *Hash, const EVP_MD *mgf1Hash,
394 # define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
395 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
396 int RSA_set_ex_data(RSA *r, int idx, void *arg);
397 void *RSA_get_ex_data(const RSA *r, int idx);
399 DECLARE_ASN1_DUP_FUNCTION_name(RSA, RSAPublicKey)
400 DECLARE_ASN1_DUP_FUNCTION_name(RSA, RSAPrivateKey)
403 * If this flag is set the RSA method is FIPS compliant and can be used in
404 * FIPS mode. This is set in the validated module method. If an application
405 * sets this flag in its own methods it is its responsibility to ensure the
406 * result is compliant.
409 # define RSA_FLAG_FIPS_METHOD 0x0400
412 * If this flag is set the operations normally disabled in FIPS mode are
413 * permitted it is then the applications responsibility to ensure that the
414 * usage is compliant.
417 # define RSA_FLAG_NON_FIPS_ALLOW 0x0400
419 * Application has decided PRNG is good enough to generate a key: don't
422 # define RSA_FLAG_CHECKED 0x0800
424 RSA_METHOD *RSA_meth_new(const char *name, int flags);
425 void RSA_meth_free(RSA_METHOD *meth);
426 RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
427 const char *RSA_meth_get0_name(const RSA_METHOD *meth);
428 int RSA_meth_set1_name(RSA_METHOD *meth, const char *name);
429 int RSA_meth_get_flags(const RSA_METHOD *meth);
430 int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
431 void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
432 int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data);
433 int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
434 (int flen, const unsigned char *from,
435 unsigned char *to, RSA *rsa, int padding);
436 int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
437 int (*pub_enc) (int flen, const unsigned char *from,
438 unsigned char *to, RSA *rsa,
440 int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
441 (int flen, const unsigned char *from,
442 unsigned char *to, RSA *rsa, int padding);
443 int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
444 int (*pub_dec) (int flen, const unsigned char *from,
445 unsigned char *to, RSA *rsa,
447 int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
448 (int flen, const unsigned char *from,
449 unsigned char *to, RSA *rsa, int padding);
450 int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
451 int (*priv_enc) (int flen, const unsigned char *from,
452 unsigned char *to, RSA *rsa,
454 int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
455 (int flen, const unsigned char *from,
456 unsigned char *to, RSA *rsa, int padding);
457 int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
458 int (*priv_dec) (int flen, const unsigned char *from,
459 unsigned char *to, RSA *rsa,
461 int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
462 (BIGNUM *r0, const BIGNUM *i, RSA *rsa, BN_CTX *ctx);
463 int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
464 int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa,
466 int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
467 (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
468 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
469 int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
470 int (*bn_mod_exp) (BIGNUM *r,
475 BN_MONT_CTX *m_ctx));
476 int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
477 int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
478 int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
479 int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
480 int (*RSA_meth_get_sign(const RSA_METHOD *meth))
482 const unsigned char *m, unsigned int m_length,
483 unsigned char *sigret, unsigned int *siglen,
485 int RSA_meth_set_sign(RSA_METHOD *rsa,
486 int (*sign) (int type, const unsigned char *m,
487 unsigned int m_length,
488 unsigned char *sigret, unsigned int *siglen,
490 int (*RSA_meth_get_verify(const RSA_METHOD *meth))
491 (int dtype, const unsigned char *m,
492 unsigned int m_length, const unsigned char *sigbuf,
493 unsigned int siglen, const RSA *rsa);
494 int RSA_meth_set_verify(RSA_METHOD *rsa,
495 int (*verify) (int dtype, const unsigned char *m,
496 unsigned int m_length,
497 const unsigned char *sigbuf,
498 unsigned int siglen, const RSA *rsa));
499 int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
500 (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
501 int RSA_meth_set_keygen(RSA_METHOD *rsa,
502 int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
504 int (*RSA_meth_get_multi_prime_keygen(const RSA_METHOD *meth))
505 (RSA *rsa, int bits, int primes, BIGNUM *e, BN_GENCB *cb);
506 int RSA_meth_set_multi_prime_keygen(RSA_METHOD *meth,
507 int (*keygen) (RSA *rsa, int bits,
508 int primes, BIGNUM *e,