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 # ifdef  __cplusplus
  24 extern "C" {
  25 # endif
  26
  27 /* The types RSA and RSA_METHOD are defined in ossl_typ.h */
  28
  29 # ifndef OPENSSL_RSA_MAX_MODULUS_BITS
  30 #  define OPENSSL_RSA_MAX_MODULUS_BITS   16384
  31 # endif
  32
  33 # define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024
  34
  35 # ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
  36 #  define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
  37 # endif
  38 # ifndef OPENSSL_RSA_MAX_PUBEXP_BITS
  39
  40 /* exponent limit enforced for "large" modulus only */
  41 #  define OPENSSL_RSA_MAX_PUBEXP_BITS    64
  42 # endif
  43
  44 # define RSA_3   0x3L
  45 # define RSA_F4  0x10001L
  46
  47 # define RSA_METHOD_FLAG_NO_CHECK        0x0001/* don't check pub/private
  48                                                 * match */
  49
  50 # define RSA_FLAG_CACHE_PUBLIC           0x0002
  51 # define RSA_FLAG_CACHE_PRIVATE          0x0004
  52 # define RSA_FLAG_BLINDING               0x0008
  53 # define RSA_FLAG_THREAD_SAFE            0x0010
  54 /*
  55  * This flag means the private key operations will be handled by rsa_mod_exp
  56  * and that they do not depend on the private key components being present:
  57  * for example a key stored in external hardware. Without this flag
  58  * bn_mod_exp gets called when private key components are absent.
  59  */
  60 # define RSA_FLAG_EXT_PKEY               0x0020
  61
  62 /*
  63  * new with 0.9.6j and 0.9.7b; the built-in
  64  * RSA implementation now uses blinding by
  65  * default (ignoring RSA_FLAG_BLINDING),
  66  * but other engines might not need it
  67  */
  68 # define RSA_FLAG_NO_BLINDING            0x0080
  69 # if OPENSSL_API_COMPAT < 0x10100000L
  70 /*
  71  * Does nothing. Previously this switched off constant time behaviour.
  72  */
  73 #  define RSA_FLAG_NO_CONSTTIME           0x0000
  74 # endif
  75 # if OPENSSL_API_COMPAT < 0x00908000L
  76 /* deprecated name for the flag*/
  77 /*
  78  * new with 0.9.7h; the built-in RSA
  79  * implementation now uses constant time
  80  * modular exponentiation for secret exponents
  81  * by default. This flag causes the
  82  * faster variable sliding window method to
  83  * be used for all exponents.
  84  */
  85 #  define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
  86 # endif
  87
  88 # define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
  89         RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_RSA_PADDING, pad, NULL)
  90
  91 # define EVP_PKEY_CTX_get_rsa_padding(ctx, ppad) \
  92         RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, ppad)
  93
  94 # define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \
  95         RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
  96                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
  97
  98 # define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \
  99         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
 100                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
 101
 102 # define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \
 103         RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
 104                           EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, plen)
 105
 106 # define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \
 107         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
 108                           EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
 109
 110 # define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \
 111         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
 112                           EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL)
 113
 114 # define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \
 115         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
 116                           EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp)
 117
 118 # define  EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md)  \
 119         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
 120                           EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)md)
 121
 122 # define  EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(ctx, md)  \
 123         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
 124                           EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)md)
 125
 126 # define  EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md)  \
 127                 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 128                                 EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)md)
 129
 130 # define  EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \
 131         RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
 132                           EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)pmd)
 133
 134 # define  EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \
 135                 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 136                                 EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)pmd)
 137
 138 # define  EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \
 139                 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 140                                 EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)l)
 141
 142 # define  EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l)       \
 143                 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
 144                                 EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void *)l)
 145
 146 # define  EVP_PKEY_CTX_rsa_pss_key_digest(ctx, md)  \
 147                 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSAi_PSS, \
 148                                   EVP_PKEY_OP_TYPE_CRYPT, EVP_PKEY_CTRL_MD, \
 149                                   0, (void *)md)
 150
 151 # define EVP_PKEY_CTRL_RSA_PADDING       (EVP_PKEY_ALG_CTRL + 1)
 152 # define EVP_PKEY_CTRL_RSA_PSS_SALTLEN   (EVP_PKEY_ALG_CTRL + 2)
 153
 154 # define EVP_PKEY_CTRL_RSA_KEYGEN_BITS   (EVP_PKEY_ALG_CTRL + 3)
 155 # define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
 156 # define EVP_PKEY_CTRL_RSA_MGF1_MD       (EVP_PKEY_ALG_CTRL + 5)
 157
 158 # define EVP_PKEY_CTRL_GET_RSA_PADDING           (EVP_PKEY_ALG_CTRL + 6)
 159 # define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN       (EVP_PKEY_ALG_CTRL + 7)
 160 # define EVP_PKEY_CTRL_GET_RSA_MGF1_MD           (EVP_PKEY_ALG_CTRL + 8)
 161
 162 # define EVP_PKEY_CTRL_RSA_OAEP_MD       (EVP_PKEY_ALG_CTRL + 9)
 163 # define EVP_PKEY_CTRL_RSA_OAEP_LABEL    (EVP_PKEY_ALG_CTRL + 10)
 164
 165 # define EVP_PKEY_CTRL_GET_RSA_OAEP_MD   (EVP_PKEY_ALG_CTRL + 11)
 166 # define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
 167
 168 # define RSA_PKCS1_PADDING       1
 169 # define RSA_SSLV23_PADDING      2
 170 # define RSA_NO_PADDING          3
 171 # define RSA_PKCS1_OAEP_PADDING  4
 172 # define RSA_X931_PADDING        5
 173 /* EVP_PKEY_ only */
 174 # define RSA_PKCS1_PSS_PADDING   6
 175
 176 # define RSA_PKCS1_PADDING_SIZE  11
 177
 178 # define RSA_set_app_data(s,arg)         RSA_set_ex_data(s,0,arg)
 179 # define RSA_get_app_data(s)             RSA_get_ex_data(s,0)
 180
 181 RSA *RSA_new(void);
 182 RSA *RSA_new_method(ENGINE *engine);
 183 int RSA_bits(const RSA *rsa);
 184 int RSA_size(const RSA *rsa);
 185 int RSA_security_bits(const RSA *rsa);
 186
 187 int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
 188 int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
 189 int RSA_set0_crt_params(RSA *r,BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
 190 void RSA_get0_key(const RSA *r,
 191                   const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
 192 void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
 193 void RSA_get0_crt_params(const RSA *r,
 194                          const BIGNUM **dmp1, const BIGNUM **dmq1,
 195                          const BIGNUM **iqmp);
 196 void RSA_clear_flags(RSA *r, int flags);
 197 int RSA_test_flags(const RSA *r, int flags);
 198 void RSA_set_flags(RSA *r, int flags);
 199 ENGINE *RSA_get0_engine(const RSA *r);
 200
 201 /* Deprecated version */
 202 DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
 203                                          (*callback) (int, int, void *),
 204                                          void *cb_arg))
 205
 206 /* New version */
 207 int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
 208
 209 int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
 210                        BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
 211                        const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
 212                        const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb);
 213 int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
 214                              BN_GENCB *cb);
 215
 216 int RSA_check_key(const RSA *);
 217 int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
 218         /* next 4 return -1 on error */
 219 int RSA_public_encrypt(int flen, const unsigned char *from,
 220                        unsigned char *to, RSA *rsa, int padding);
 221 int RSA_private_encrypt(int flen, const unsigned char *from,
 222                         unsigned char *to, RSA *rsa, int padding);
 223 int RSA_public_decrypt(int flen, const unsigned char *from,
 224                        unsigned char *to, RSA *rsa, int padding);
 225 int RSA_private_decrypt(int flen, const unsigned char *from,
 226                         unsigned char *to, RSA *rsa, int padding);
 227 void RSA_free(RSA *r);
 228 /* "up" the RSA object's reference count */
 229 int RSA_up_ref(RSA *r);
 230
 231 int RSA_flags(const RSA *r);
 232
 233 void RSA_set_default_method(const RSA_METHOD *meth);
 234 const RSA_METHOD *RSA_get_default_method(void);
 235 const RSA_METHOD *RSA_get_method(const RSA *rsa);
 236 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
 237
 238 /* these are the actual RSA functions */
 239 const RSA_METHOD *RSA_PKCS1_OpenSSL(void);
 240
 241 const RSA_METHOD *RSA_null_method(void);
 242
 243 int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2);
 244
 245 DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey)
 246 DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey)
 247
 248 typedef struct rsa_pss_params_st {
 249     X509_ALGOR *hashAlgorithm;
 250     X509_ALGOR *maskGenAlgorithm;
 251     ASN1_INTEGER *saltLength;
 252     ASN1_INTEGER *trailerField;
 253     /* Decoded hash algorithm from maskGenAlgorithm */
 254     X509_ALGOR *maskHash;
 255 } RSA_PSS_PARAMS;
 256
 257 DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
 258
 259 typedef struct rsa_oaep_params_st {
 260     X509_ALGOR *hashFunc;
 261     X509_ALGOR *maskGenFunc;
 262     X509_ALGOR *pSourceFunc;
 263     /* Decoded hash algorithm from maskGenFunc */
 264     X509_ALGOR *maskHash;
 265 } RSA_OAEP_PARAMS;
 266
 267 DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
 268
 269 # ifndef OPENSSL_NO_STDIO
 270 int RSA_print_fp(FILE *fp, const RSA *r, int offset);
 271 # endif
 272
 273 int RSA_print(BIO *bp, const RSA *r, int offset);
 274
 275 /*
 276  * The following 2 functions sign and verify a X509_SIG ASN1 object inside
 277  * PKCS#1 padded RSA encryption
 278  */
 279 int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
 280              unsigned char *sigret, unsigned int *siglen, RSA *rsa);
 281 int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
 282                const unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
 283
 284 /*
 285  * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
 286  * PKCS#1 padded RSA encryption
 287  */
 288 int RSA_sign_ASN1_OCTET_STRING(int type,
 289                                const unsigned char *m, unsigned int m_length,
 290                                unsigned char *sigret, unsigned int *siglen,
 291                                RSA *rsa);
 292 int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
 293                                  unsigned int m_length, unsigned char *sigbuf,
 294                                  unsigned int siglen, RSA *rsa);
 295
 296 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
 297 void RSA_blinding_off(RSA *rsa);
 298 BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);
 299
 300 int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
 301                                  const unsigned char *f, int fl);
 302 int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
 303                                    const unsigned char *f, int fl,
 304                                    int rsa_len);
 305 int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
 306                                  const unsigned char *f, int fl);
 307 int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
 308                                    const unsigned char *f, int fl,
 309                                    int rsa_len);
 310 int PKCS1_MGF1(unsigned char *mask, long len, const unsigned char *seed,
 311                long seedlen, const EVP_MD *dgst);
 312 int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
 313                                const unsigned char *f, int fl,
 314                                const unsigned char *p, int pl);
 315 int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
 316                                  const unsigned char *f, int fl, int rsa_len,
 317                                  const unsigned char *p, int pl);
 318 int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
 319                                     const unsigned char *from, int flen,
 320                                     const unsigned char *param, int plen,
 321                                     const EVP_MD *md, const EVP_MD *mgf1md);
 322 int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
 323                                       const unsigned char *from, int flen,
 324                                       int num, const unsigned char *param,
 325                                       int plen, const EVP_MD *md,
 326                                       const EVP_MD *mgf1md);
 327 int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
 328                            const unsigned char *f, int fl);
 329 int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
 330                              const unsigned char *f, int fl, int rsa_len);
 331 int RSA_padding_add_none(unsigned char *to, int tlen, const unsigned char *f,
 332                          int fl);
 333 int RSA_padding_check_none(unsigned char *to, int tlen,
 334                            const unsigned char *f, int fl, int rsa_len);
 335 int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f,
 336                          int fl);
 337 int RSA_padding_check_X931(unsigned char *to, int tlen,
 338                            const unsigned char *f, int fl, int rsa_len);
 339 int RSA_X931_hash_id(int nid);
 340
 341 int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
 342                          const EVP_MD *Hash, const unsigned char *EM,
 343                          int sLen);
 344 int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
 345                               const unsigned char *mHash, const EVP_MD *Hash,
 346                               int sLen);
 347
 348 int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
 349                               const EVP_MD *Hash, const EVP_MD *mgf1Hash,
 350                               const unsigned char *EM, int sLen);
 351
 352 int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
 353                                    const unsigned char *mHash,
 354                                    const EVP_MD *Hash, const EVP_MD *mgf1Hash,
 355                                    int sLen);
 356
 357 #define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
 358     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
 359 int RSA_set_ex_data(RSA *r, int idx, void *arg);
 360 void *RSA_get_ex_data(const RSA *r, int idx);
 361
 362 RSA *RSAPublicKey_dup(RSA *rsa);
 363 RSA *RSAPrivateKey_dup(RSA *rsa);
 364
 365 /*
 366  * If this flag is set the RSA method is FIPS compliant and can be used in
 367  * FIPS mode. This is set in the validated module method. If an application
 368  * sets this flag in its own methods it is its responsibility to ensure the
 369  * result is compliant.
 370  */
 371
 372 # define RSA_FLAG_FIPS_METHOD                    0x0400
 373
 374 /*
 375  * If this flag is set the operations normally disabled in FIPS mode are
 376  * permitted it is then the applications responsibility to ensure that the
 377  * usage is compliant.
 378  */
 379
 380 # define RSA_FLAG_NON_FIPS_ALLOW                 0x0400
 381 /*
 382  * Application has decided PRNG is good enough to generate a key: don't
 383  * check.
 384  */
 385 # define RSA_FLAG_CHECKED                        0x0800
 386
 387 RSA_METHOD *RSA_meth_new(const char *name, int flags);
 388 void RSA_meth_free(RSA_METHOD *meth);
 389 RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
 390 const char *RSA_meth_get0_name(const RSA_METHOD *meth);
 391 int RSA_meth_set1_name(RSA_METHOD *meth, const char *name);
 392 int RSA_meth_get_flags(RSA_METHOD *meth);
 393 int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
 394 void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
 395 int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data);
 396 int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
 397     (int flen, const unsigned char *from,
 398      unsigned char *to, RSA *rsa, int padding);
 399 int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
 400                          int (*pub_enc) (int flen, const unsigned char *from,
 401                                          unsigned char *to, RSA *rsa,
 402                                          int padding));
 403 int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
 404     (int flen, const unsigned char *from,
 405      unsigned char *to, RSA *rsa, int padding);
 406 int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
 407                          int (*pub_dec) (int flen, const unsigned char *from,
 408                                          unsigned char *to, RSA *rsa,
 409                                          int padding));
 410 int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
 411     (int flen, const unsigned char *from,
 412      unsigned char *to, RSA *rsa, int padding);
 413 int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
 414                           int (*priv_enc) (int flen, const unsigned char *from,
 415                                            unsigned char *to, RSA *rsa,
 416                                            int padding));
 417 int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
 418     (int flen, const unsigned char *from,
 419      unsigned char *to, RSA *rsa, int padding);
 420 int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
 421                           int (*priv_dec) (int flen, const unsigned char *from,
 422                                            unsigned char *to, RSA *rsa,
 423                                            int padding));
 424 int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
 425     (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
 426 int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
 427                          int (*mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa,
 428                                          BN_CTX *ctx));
 429 int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
 430     (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
 431      const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
 432 int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
 433                             int (*bn_mod_exp) (BIGNUM *r,
 434                                                const BIGNUM *a,
 435                                                const BIGNUM *p,
 436                                                const BIGNUM *m,
 437                                                BN_CTX *ctx,
 438                                                BN_MONT_CTX *m_ctx));
 439 int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
 440 int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
 441 int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
 442 int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
 443 int (*RSA_meth_get_sign(const RSA_METHOD *meth))
 444     (int type,
 445      const unsigned char *m, unsigned int m_length,
 446      unsigned char *sigret, unsigned int *siglen,
 447      const RSA *rsa);
 448 int RSA_meth_set_sign(RSA_METHOD *rsa,
 449                       int (*sign) (int type, const unsigned char *m,
 450                                    unsigned int m_length,
 451                                    unsigned char *sigret, unsigned int *siglen,
 452                                    const RSA *rsa));
 453 int (*RSA_meth_get_verify(const RSA_METHOD *meth))
 454     (int dtype, const unsigned char *m,
 455      unsigned int m_length, const unsigned char *sigbuf,
 456      unsigned int siglen, const RSA *rsa);
 457 int RSA_meth_set_verify(RSA_METHOD *rsa,
 458                         int (*verify) (int dtype, const unsigned char *m,
 459                                        unsigned int m_length,
 460                                        const unsigned char *sigbuf,
 461                                        unsigned int siglen, const RSA *rsa));
 462 int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
 463     (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
 464 int RSA_meth_set_keygen(RSA_METHOD *rsa,
 465                         int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
 466                                        BN_GENCB *cb));
 467
 468 /* BEGIN ERROR CODES */
 469 /*
 470  * The following lines are auto generated by the script mkerr.pl. Any changes
 471  * made after this point may be overwritten when the script is next run.
 472  */
 473
 474 int ERR_load_RSA_strings(void);
 475
 476 /* Error codes for the RSA functions. */
 477
 478 /* Function codes. */
 479 # define RSA_F_CHECK_PADDING_MD                           140
 480 # define RSA_F_ENCODE_PKCS1                               146
 481 # define RSA_F_INT_RSA_VERIFY                             145
 482 # define RSA_F_OLD_RSA_PRIV_DECODE                        147
 483 # define RSA_F_PKEY_RSA_CTRL                              143
 484 # define RSA_F_PKEY_RSA_CTRL_STR                          144
 485 # define RSA_F_PKEY_RSA_SIGN                              142
 486 # define RSA_F_PKEY_RSA_VERIFY                            149
 487 # define RSA_F_PKEY_RSA_VERIFYRECOVER                     141
 488 # define RSA_F_RSA_ALGOR_TO_MD                            156
 489 # define RSA_F_RSA_BUILTIN_KEYGEN                         129
 490 # define RSA_F_RSA_CHECK_KEY                              123
 491 # define RSA_F_RSA_CHECK_KEY_EX                           160
 492 # define RSA_F_RSA_CMS_DECRYPT                            159
 493 # define RSA_F_RSA_CMS_VERIFY                             158
 494 # define RSA_F_RSA_ITEM_VERIFY                            148
 495 # define RSA_F_RSA_METH_DUP                               161
 496 # define RSA_F_RSA_METH_NEW                               162
 497 # define RSA_F_RSA_METH_SET1_NAME                         163
 498 # define RSA_F_RSA_MGF1_TO_MD                             157
 499 # define RSA_F_RSA_NEW_METHOD                             106
 500 # define RSA_F_RSA_NULL                                   124
 501 # define RSA_F_RSA_NULL_PRIVATE_DECRYPT                   132
 502 # define RSA_F_RSA_NULL_PRIVATE_ENCRYPT                   133
 503 # define RSA_F_RSA_NULL_PUBLIC_DECRYPT                    134
 504 # define RSA_F_RSA_NULL_PUBLIC_ENCRYPT                    135
 505 # define RSA_F_RSA_OSSL_PRIVATE_DECRYPT                   101
 506 # define RSA_F_RSA_OSSL_PRIVATE_ENCRYPT                   102
 507 # define RSA_F_RSA_OSSL_PUBLIC_DECRYPT                    103
 508 # define RSA_F_RSA_OSSL_PUBLIC_ENCRYPT                    104
 509 # define RSA_F_RSA_PADDING_ADD_NONE                       107
 510 # define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP                 121
 511 # define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP_MGF1            154
 512 # define RSA_F_RSA_PADDING_ADD_PKCS1_PSS                  125
 513 # define RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1             152
 514 # define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1               108
 515 # define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2               109
 516 # define RSA_F_RSA_PADDING_ADD_SSLV23                     110
 517 # define RSA_F_RSA_PADDING_ADD_X931                       127
 518 # define RSA_F_RSA_PADDING_CHECK_NONE                     111
 519 # define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP               122
 520 # define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP_MGF1          153
 521 # define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1             112
 522 # define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2             113
 523 # define RSA_F_RSA_PADDING_CHECK_SSLV23                   114
 524 # define RSA_F_RSA_PADDING_CHECK_X931                     128
 525 # define RSA_F_RSA_PARAM_DECODE                           164
 526 # define RSA_F_RSA_PRINT                                  115
 527 # define RSA_F_RSA_PRINT_FP                               116
 528 # define RSA_F_RSA_PRIV_DECODE                            150
 529 # define RSA_F_RSA_PRIV_ENCODE                            138
 530 # define RSA_F_RSA_PSS_GET_PARAM                          151
 531 # define RSA_F_RSA_PSS_TO_CTX                             155
 532 # define RSA_F_RSA_PUB_DECODE                             139
 533 # define RSA_F_RSA_SETUP_BLINDING                         136
 534 # define RSA_F_RSA_SIGN                                   117
 535 # define RSA_F_RSA_SIGN_ASN1_OCTET_STRING                 118
 536 # define RSA_F_RSA_VERIFY                                 119
 537 # define RSA_F_RSA_VERIFY_ASN1_OCTET_STRING               120
 538 # define RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1                  126
 539
 540 /* Reason codes. */
 541 # define RSA_R_ALGORITHM_MISMATCH                         100
 542 # define RSA_R_BAD_E_VALUE                                101
 543 # define RSA_R_BAD_FIXED_HEADER_DECRYPT                   102
 544 # define RSA_R_BAD_PAD_BYTE_COUNT                         103
 545 # define RSA_R_BAD_SIGNATURE                              104
 546 # define RSA_R_BLOCK_TYPE_IS_NOT_01                       106
 547 # define RSA_R_BLOCK_TYPE_IS_NOT_02                       107
 548 # define RSA_R_DATA_GREATER_THAN_MOD_LEN                  108
 549 # define RSA_R_DATA_TOO_LARGE                             109
 550 # define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE                110
 551 # define RSA_R_DATA_TOO_LARGE_FOR_MODULUS                 132
 552 # define RSA_R_DATA_TOO_SMALL                             111
 553 # define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE                122
 554 # define RSA_R_DIGEST_DOES_NOT_MATCH                      158
 555 # define RSA_R_DIGEST_NOT_ALLOWED                         145
 556 # define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY                 112
 557 # define RSA_R_DMP1_NOT_CONGRUENT_TO_D                    124
 558 # define RSA_R_DMQ1_NOT_CONGRUENT_TO_D                    125
 559 # define RSA_R_D_E_NOT_CONGRUENT_TO_1                     123
 560 # define RSA_R_FIRST_OCTET_INVALID                        133
 561 # define RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE        144
 562 # define RSA_R_INVALID_DIGEST                             157
 563 # define RSA_R_INVALID_DIGEST_LENGTH                      143
 564 # define RSA_R_INVALID_HEADER                             137
 565 # define RSA_R_INVALID_LABEL                              160
 566 # define RSA_R_INVALID_MESSAGE_LENGTH                     131
 567 # define RSA_R_INVALID_MGF1_MD                            156
 568 # define RSA_R_INVALID_OAEP_PARAMETERS                    161
 569 # define RSA_R_INVALID_PADDING                            138
 570 # define RSA_R_INVALID_PADDING_MODE                       141
 571 # define RSA_R_INVALID_PSS_PARAMETERS                     149
 572 # define RSA_R_INVALID_PSS_SALTLEN                        146
 573 # define RSA_R_INVALID_SALT_LENGTH                        150
 574 # define RSA_R_INVALID_TRAILER                            139
 575 # define RSA_R_INVALID_X931_DIGEST                        142
 576 # define RSA_R_IQMP_NOT_INVERSE_OF_Q                      126
 577 # define RSA_R_KEY_SIZE_TOO_SMALL                         120
 578 # define RSA_R_LAST_OCTET_INVALID                         134
 579 # define RSA_R_MGF1_DIGEST_NOT_ALLOWED                    152
 580 # define RSA_R_MODULUS_TOO_LARGE                          105
 581 # define RSA_R_NO_PUBLIC_EXPONENT                         140
 582 # define RSA_R_NULL_BEFORE_BLOCK_MISSING                  113
 583 # define RSA_R_N_DOES_NOT_EQUAL_P_Q                       127
 584 # define RSA_R_OAEP_DECODING_ERROR                        121
 585 # define RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE   148
 586 # define RSA_R_PADDING_CHECK_FAILED                       114
 587 # define RSA_R_PKCS_DECODING_ERROR                        159
 588 # define RSA_R_PSS_SALTLEN_TOO_SMALL                      164
 589 # define RSA_R_P_NOT_PRIME                                128
 590 # define RSA_R_Q_NOT_PRIME                                129
 591 # define RSA_R_RSA_OPERATIONS_NOT_SUPPORTED               130
 592 # define RSA_R_SLEN_CHECK_FAILED                          136
 593 # define RSA_R_SLEN_RECOVERY_FAILED                       135
 594 # define RSA_R_SSLV3_ROLLBACK_ATTACK                      115
 595 # define RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD 116
 596 # define RSA_R_UNKNOWN_ALGORITHM_TYPE                     117
 597 # define RSA_R_UNKNOWN_DIGEST                             166
 598 # define RSA_R_UNKNOWN_MASK_DIGEST                        151
 599 # define RSA_R_UNKNOWN_PADDING_TYPE                       118
 600 # define RSA_R_UNSUPPORTED_ENCRYPTION_TYPE                162
 601 # define RSA_R_UNSUPPORTED_LABEL_SOURCE                   163
 602 # define RSA_R_UNSUPPORTED_MASK_ALGORITHM                 153
 603 # define RSA_R_UNSUPPORTED_MASK_PARAMETER                 154
 604 # define RSA_R_UNSUPPORTED_SIGNATURE_TYPE                 155
 605 # define RSA_R_VALUE_MISSING                              147
 606 # define RSA_R_WRONG_SIGNATURE_LENGTH                     119
 607
 608 #  ifdef  __cplusplus
 609 }
 610 #  endif
 611 # endif
 612 #endif