include/openssl/rsa.h

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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
   8  */
   9
  10 #ifndef HEADER_RSA_H
  11 # define HEADER_RSA_H
  12
  13 # include <openssl/opensslconf.h>
  14
  15 # ifndef OPENSSL_NO_RSA
  16 # include <openssl/asn1.h>
  17 # include <openssl/bio.h>
  18 # include <openssl/crypto.h>
  19 # include <openssl/ossl_typ.h>
  20 # if OPENSSL_API_COMPAT < 0x10100000L
  21 #  include <openssl/bn.h>
  22 # endif
  23 # include <openssl/rsaerr.h>
  24 # ifdef  __cplusplus
  25 extern "C" {
  26 # endif
  27
  28 /* The types RSA and RSA_METHOD are defined in ossl_typ.h */
  29
  30 # ifndef OPENSSL_RSA_MAX_MODULUS_BITS
  31 #  define OPENSSL_RSA_MAX_MODULUS_BITS   16384
  32 # endif
  33
  34 # define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024
  35
  36 # ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
  37 #  define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
  38 # endif
  39 # ifndef OPENSSL_RSA_MAX_PUBEXP_BITS
  40
  41 /* exponent limit enforced for "large" modulus only */
  42 #  define OPENSSL_RSA_MAX_PUBEXP_BITS    64
  43 # endif
  44
  45 # define RSA_3   0x3L
  46 # define RSA_F4  0x10001L
  47
  48 # define RSA_METHOD_FLAG_NO_CHECK        0x0001/* don't check pub/private
  49                                                 * match */
  50
  51 # define RSA_FLAG_CACHE_PUBLIC           0x0002
  52 # define RSA_FLAG_CACHE_PRIVATE          0x0004
  53 # define RSA_FLAG_BLINDING               0x0008
  54 # define RSA_FLAG_THREAD_SAFE            0x0010
  55 /*
  56  * This flag means the private key operations will be handled by rsa_mod_exp
  57  * and that they do not depend on the private key components being present:
  58  * for example a key stored in external hardware. Without this flag
  59  * bn_mod_exp gets called when private key components are absent.
  60  */
  61 # define RSA_FLAG_EXT_PKEY               0x0020
  62
  63 /*
  64  * new with 0.9.6j and 0.9.7b; the built-in
  65  * RSA implementation now uses blinding by
  66  * default (ignoring RSA_FLAG_BLINDING),
  67  * but other engines might not need it
  68  */
  69 # define RSA_FLAG_NO_BLINDING            0x0080
  70 # if OPENSSL_API_COMPAT < 0x10100000L
  71 /*
  72  * Does nothing. Previously this switched off constant time behaviour.
  73  */
  74 #  define RSA_FLAG_NO_CONSTTIME           0x0000
  75 # endif
  76 # if OPENSSL_API_COMPAT < 0x00908000L
  77 /* deprecated name for the flag*/
  78 /*
  79  * new with 0.9.7h; the built-in RSA
  80  * implementation now uses constant time
  81  * modular exponentiation for secret exponents
  82  * by default. This flag causes the
  83  * faster variable sliding window method to
  84  * be used for all exponents.
  85  */
  86 #  define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
  87 # endif
  88
  89 # define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
  90         RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_RSA_PADDING, pad, NULL)
  91
  92 # define EVP_PKEY_CTX_get_rsa_padding(ctx, ppad) \
  93         RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, ppad)
  94
  95 # define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \
  96         RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
  97                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
  98 /* Salt length matches digest */
  99 # define RSA_PSS_SALTLEN_DIGEST -1
 100 /* Verify only: auto detect salt length */
 101 # define RSA_PSS_SALTLEN_AUTO   -2
 102 /* Set salt length to maximum possible */
 103 # define RSA_PSS_SALTLEN_MAX    -3
 104 /* Old compatible max salt length for sign only */
 105 # define RSA_PSS_SALTLEN_MAX_SIGN    -2
 106
 107 # define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \
 108         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
 109                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
 110
 111 # define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \
 112         RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
 113                           EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, plen)
 114
 115 # define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \
 116         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
 117                           EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL)
 118
 119 # define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \
 120         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
 121                           EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp)
 122
 123 # define  EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md) \
 124         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
 125                           EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))
 126
 127 # define  EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(ctx, md) \
 128         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
 129                           EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))
 130
 131 # define  EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md) \
 132         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 133                           EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)(md))
 134
 135 # define  EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \
 136         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
 137                           EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)(pmd))
 138
 139 # define  EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \
 140         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 141                           EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)(pmd))
 142
 143 # define  EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \
 144         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 145                           EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)(l))
 146
 147 # define  EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l) \
 148         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 149                           EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void *)(l))
 150
 151 # define  EVP_PKEY_CTX_set_rsa_pss_keygen_md(ctx, md) \
 152         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS,  \
 153                           EVP_PKEY_OP_TYPE_KEYGEN, EVP_PKEY_CTRL_MD,  \
 154                           0, (void *)(md))
 155
 156 # define EVP_PKEY_CTRL_RSA_PADDING       (EVP_PKEY_ALG_CTRL + 1)
 157 # define EVP_PKEY_CTRL_RSA_PSS_SALTLEN   (EVP_PKEY_ALG_CTRL + 2)
 158
 159 # define EVP_PKEY_CTRL_RSA_KEYGEN_BITS   (EVP_PKEY_ALG_CTRL + 3)
 160 # define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
 161 # define EVP_PKEY_CTRL_RSA_MGF1_MD       (EVP_PKEY_ALG_CTRL + 5)
 162
 163 # define EVP_PKEY_CTRL_GET_RSA_PADDING           (EVP_PKEY_ALG_CTRL + 6)
 164 # define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN       (EVP_PKEY_ALG_CTRL + 7)
 165 # define EVP_PKEY_CTRL_GET_RSA_MGF1_MD           (EVP_PKEY_ALG_CTRL + 8)
 166
 167 # define EVP_PKEY_CTRL_RSA_OAEP_MD       (EVP_PKEY_ALG_CTRL + 9)
 168 # define EVP_PKEY_CTRL_RSA_OAEP_LABEL    (EVP_PKEY_ALG_CTRL + 10)
 169
 170 # define EVP_PKEY_CTRL_GET_RSA_OAEP_MD   (EVP_PKEY_ALG_CTRL + 11)
 171 # define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
 172
 173 # define RSA_PKCS1_PADDING       1
 174 # define RSA_SSLV23_PADDING      2
 175 # define RSA_NO_PADDING          3
 176 # define RSA_PKCS1_OAEP_PADDING  4
 177 # define RSA_X931_PADDING        5
 178 /* EVP_PKEY_ only */
 179 # define RSA_PKCS1_PSS_PADDING   6
 180
 181 # define RSA_PKCS1_PADDING_SIZE  11
 182
 183 # define RSA_set_app_data(s,arg)         RSA_set_ex_data(s,0,arg)
 184 # define RSA_get_app_data(s)             RSA_get_ex_data(s,0)
 185
 186 RSA *RSA_new(void);
 187 RSA *RSA_new_method(ENGINE *engine);
 188 int RSA_bits(const RSA *rsa);
 189 int RSA_size(const RSA *rsa);
 190 int RSA_security_bits(const RSA *rsa);
 191
 192 int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
 193 int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
 194 int RSA_set0_crt_params(RSA *r,BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
 195 void RSA_get0_key(const RSA *r,
 196                   const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
 197 void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
 198 void RSA_get0_crt_params(const RSA *r,
 199                          const BIGNUM **dmp1, const BIGNUM **dmq1,
 200                          const BIGNUM **iqmp);
 201 void RSA_clear_flags(RSA *r, int flags);
 202 int RSA_test_flags(const RSA *r, int flags);
 203 void RSA_set_flags(RSA *r, int flags);
 204 ENGINE *RSA_get0_engine(const RSA *r);
 205
 206 /* Deprecated version */
 207 DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
 208                                          (*callback) (int, int, void *),
 209                                          void *cb_arg))
 210
 211 /* New version */
 212 int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
 213
 214 int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
 215                        BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
 216                        const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
 217                        const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb);
 218 int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
 219                              BN_GENCB *cb);
 220
 221 int RSA_check_key(const RSA *);
 222 int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
 223         /* next 4 return -1 on error */
 224 int RSA_public_encrypt(int flen, const unsigned char *from,
 225                        unsigned char *to, RSA *rsa, int padding);
 226 int RSA_private_encrypt(int flen, const unsigned char *from,
 227                         unsigned char *to, RSA *rsa, int padding);
 228 int RSA_public_decrypt(int flen, const unsigned char *from,
 229                        unsigned char *to, RSA *rsa, int padding);
 230 int RSA_private_decrypt(int flen, const unsigned char *from,
 231                         unsigned char *to, RSA *rsa, int padding);
 232 void RSA_free(RSA *r);
 233 /* "up" the RSA object's reference count */
 234 int RSA_up_ref(RSA *r);
 235
 236 int RSA_flags(const RSA *r);
 237
 238 void RSA_set_default_method(const RSA_METHOD *meth);
 239 const RSA_METHOD *RSA_get_default_method(void);
 240 const RSA_METHOD *RSA_null_method(void);
 241 const RSA_METHOD *RSA_get_method(const RSA *rsa);
 242 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
 243
 244 /* these are the actual RSA functions */
 245 const RSA_METHOD *RSA_PKCS1_OpenSSL(void);
 246
 247 int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2);
 248
 249 DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey)
 250 DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey)
 251
 252 typedef struct rsa_pss_params_st {
 253     X509_ALGOR *hashAlgorithm;
 254     X509_ALGOR *maskGenAlgorithm;
 255     ASN1_INTEGER *saltLength;
 256     ASN1_INTEGER *trailerField;
 257     /* Decoded hash algorithm from maskGenAlgorithm */
 258     X509_ALGOR *maskHash;
 259 } RSA_PSS_PARAMS;
 260
 261 DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
 262
 263 typedef struct rsa_oaep_params_st {
 264     X509_ALGOR *hashFunc;
 265     X509_ALGOR *maskGenFunc;
 266     X509_ALGOR *pSourceFunc;
 267     /* Decoded hash algorithm from maskGenFunc */
 268     X509_ALGOR *maskHash;
 269 } RSA_OAEP_PARAMS;
 270
 271 DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
 272
 273 # ifndef OPENSSL_NO_STDIO
 274 int RSA_print_fp(FILE *fp, const RSA *r, int offset);
 275 # endif
 276
 277 int RSA_print(BIO *bp, const RSA *r, int offset);
 278
 279 /*
 280  * The following 2 functions sign and verify a X509_SIG ASN1 object inside
 281  * PKCS#1 padded RSA encryption
 282  */
 283 int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
 284              unsigned char *sigret, unsigned int *siglen, RSA *rsa);
 285 int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
 286                const unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
 287
 288 /*
 289  * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
 290  * PKCS#1 padded RSA encryption
 291  */
 292 int RSA_sign_ASN1_OCTET_STRING(int type,
 293                                const unsigned char *m, unsigned int m_length,
 294                                unsigned char *sigret, unsigned int *siglen,
 295                                RSA *rsa);
 296 int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
 297                                  unsigned int m_length, unsigned char *sigbuf,
 298                                  unsigned int siglen, RSA *rsa);
 299
 300 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
 301 void RSA_blinding_off(RSA *rsa);
 302 BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);
 303
 304 int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
 305                                  const unsigned char *f, int fl);
 306 int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
 307                                    const unsigned char *f, int fl,
 308                                    int rsa_len);
 309 int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
 310                                  const unsigned char *f, int fl);
 311 int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
 312                                    const unsigned char *f, int fl,
 313                                    int rsa_len);
 314 int PKCS1_MGF1(unsigned char *mask, long len, const unsigned char *seed,
 315                long seedlen, const EVP_MD *dgst);
 316 int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
 317                                const unsigned char *f, int fl,
 318                                const unsigned char *p, int pl);
 319 int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
 320                                  const unsigned char *f, int fl, int rsa_len,
 321                                  const unsigned char *p, int pl);
 322 int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
 323                                     const unsigned char *from, int flen,
 324                                     const unsigned char *param, int plen,
 325                                     const EVP_MD *md, const EVP_MD *mgf1md);
 326 int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
 327                                       const unsigned char *from, int flen,
 328                                       int num, const unsigned char *param,
 329                                       int plen, const EVP_MD *md,
 330                                       const EVP_MD *mgf1md);
 331 int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
 332                            const unsigned char *f, int fl);
 333 int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
 334                              const unsigned char *f, int fl, int rsa_len);
 335 int RSA_padding_add_none(unsigned char *to, int tlen, const unsigned char *f,
 336                          int fl);
 337 int RSA_padding_check_none(unsigned char *to, int tlen,
 338                            const unsigned char *f, int fl, int rsa_len);
 339 int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f,
 340                          int fl);
 341 int RSA_padding_check_X931(unsigned char *to, int tlen,
 342                            const unsigned char *f, int fl, int rsa_len);
 343 int RSA_X931_hash_id(int nid);
 344
 345 int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
 346                          const EVP_MD *Hash, const unsigned char *EM,
 347                          int sLen);
 348 int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
 349                               const unsigned char *mHash, const EVP_MD *Hash,
 350                               int sLen);
 351
 352 int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
 353                               const EVP_MD *Hash, const EVP_MD *mgf1Hash,
 354                               const unsigned char *EM, int sLen);
 355
 356 int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
 357                                    const unsigned char *mHash,
 358                                    const EVP_MD *Hash, const EVP_MD *mgf1Hash,
 359                                    int sLen);
 360
 361 #define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
 362     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
 363 int RSA_set_ex_data(RSA *r, int idx, void *arg);
 364 void *RSA_get_ex_data(const RSA *r, int idx);
 365
 366 RSA *RSAPublicKey_dup(RSA *rsa);
 367 RSA *RSAPrivateKey_dup(RSA *rsa);
 368
 369 /*
 370  * If this flag is set the RSA method is FIPS compliant and can be used in
 371  * FIPS mode. This is set in the validated module method. If an application
 372  * sets this flag in its own methods it is its responsibility to ensure the
 373  * result is compliant.
 374  */
 375
 376 # define RSA_FLAG_FIPS_METHOD                    0x0400
 377
 378 /*
 379  * If this flag is set the operations normally disabled in FIPS mode are
 380  * permitted it is then the applications responsibility to ensure that the
 381  * usage is compliant.
 382  */
 383
 384 # define RSA_FLAG_NON_FIPS_ALLOW                 0x0400
 385 /*
 386  * Application has decided PRNG is good enough to generate a key: don't
 387  * check.
 388  */
 389 # define RSA_FLAG_CHECKED                        0x0800
 390
 391 RSA_METHOD *RSA_meth_new(const char *name, int flags);
 392 void RSA_meth_free(RSA_METHOD *meth);
 393 RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
 394 const char *RSA_meth_get0_name(const RSA_METHOD *meth);
 395 int RSA_meth_set1_name(RSA_METHOD *meth, const char *name);
 396 int RSA_meth_get_flags(RSA_METHOD *meth);
 397 int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
 398 void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
 399 int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data);
 400 int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
 401     (int flen, const unsigned char *from,
 402      unsigned char *to, RSA *rsa, int padding);
 403 int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
 404                          int (*pub_enc) (int flen, const unsigned char *from,
 405                                          unsigned char *to, RSA *rsa,
 406                                          int padding));
 407 int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
 408     (int flen, const unsigned char *from,
 409      unsigned char *to, RSA *rsa, int padding);
 410 int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
 411                          int (*pub_dec) (int flen, const unsigned char *from,
 412                                          unsigned char *to, RSA *rsa,
 413                                          int padding));
 414 int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
 415     (int flen, const unsigned char *from,
 416      unsigned char *to, RSA *rsa, int padding);
 417 int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
 418                           int (*priv_enc) (int flen, const unsigned char *from,
 419                                            unsigned char *to, RSA *rsa,
 420                                            int padding));
 421 int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
 422     (int flen, const unsigned char *from,
 423      unsigned char *to, RSA *rsa, int padding);
 424 int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
 425                           int (*priv_dec) (int flen, const unsigned char *from,
 426                                            unsigned char *to, RSA *rsa,
 427                                            int padding));
 428 int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
 429     (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
 430 int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
 431                          int (*mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa,
 432                                          BN_CTX *ctx));
 433 int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
 434     (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 435      const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
 436 int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
 437                             int (*bn_mod_exp) (BIGNUM *r,
 438                                                const BIGNUM *a,
 439                                                const BIGNUM *p,
 440                                                const BIGNUM *m,
 441                                                BN_CTX *ctx,
 442                                                BN_MONT_CTX *m_ctx));
 443 int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
 444 int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
 445 int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
 446 int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
 447 int (*RSA_meth_get_sign(const RSA_METHOD *meth))
 448     (int type,
 449      const unsigned char *m, unsigned int m_length,
 450      unsigned char *sigret, unsigned int *siglen,
 451      const RSA *rsa);
 452 int RSA_meth_set_sign(RSA_METHOD *rsa,
 453                       int (*sign) (int type, const unsigned char *m,
 454                                    unsigned int m_length,
 455                                    unsigned char *sigret, unsigned int *siglen,
 456                                    const RSA *rsa));
 457 int (*RSA_meth_get_verify(const RSA_METHOD *meth))
 458     (int dtype, const unsigned char *m,
 459      unsigned int m_length, const unsigned char *sigbuf,
 460      unsigned int siglen, const RSA *rsa);
 461 int RSA_meth_set_verify(RSA_METHOD *rsa,
 462                         int (*verify) (int dtype, const unsigned char *m,
 463                                        unsigned int m_length,
 464                                        const unsigned char *sigbuf,
 465                                        unsigned int siglen, const RSA *rsa));
 466 int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
 467     (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
 468 int RSA_meth_set_keygen(RSA_METHOD *rsa,
 469                         int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
 470                                        BN_GENCB *cb));
 471 int ERR_load_RSA_strings(void);
 472
 473 #  ifdef  __cplusplus
 474 }
 475 #  endif
 476 # endif
 477 #endif