include/openssl/rsa.h

   1 /*
   2  * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   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
   8  */
   9
  10 #ifndef OPENSSL_RSA_H
  11 # define OPENSSL_RSA_H
  12 # pragma once
  13
  14 # include <openssl/macros.h>
  15 # ifndef OPENSSL_NO_DEPRECATED_3_0
  16 #  define HEADER_RSA_H
  17 # endif
  18
  19 # include <openssl/opensslconf.h>
  20
  21 # include <openssl/asn1.h>
  22 # include <openssl/bio.h>
  23 # include <openssl/crypto.h>
  24 # include <openssl/types.h>
  25 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
  26 #  include <openssl/bn.h>
  27 # endif
  28 # include <openssl/rsaerr.h>
  29 # include <openssl/safestack.h>
  30
  31 # ifdef  __cplusplus
  32 extern "C" {
  33 # endif
  34
  35 # ifndef OPENSSL_RSA_MAX_MODULUS_BITS
  36 #  define OPENSSL_RSA_MAX_MODULUS_BITS   16384
  37 # endif
  38
  39 # define RSA_3   0x3L
  40 # define RSA_F4  0x10001L
  41
  42 # ifndef OPENSSL_NO_DEPRECATED_3_0
  43 /* The types RSA and RSA_METHOD are defined in ossl_typ.h */
  44
  45 #  define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 2048
  46
  47 #  ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
  48 #   define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
  49 #  endif
  50
  51 /* exponent limit enforced for "large" modulus only */
  52 #  ifndef OPENSSL_RSA_MAX_PUBEXP_BITS
  53 #   define OPENSSL_RSA_MAX_PUBEXP_BITS    64
  54 #  endif
  55 /* based on RFC 8017 appendix A.1.2 */
  56 #  define RSA_ASN1_VERSION_DEFAULT        0
  57 #  define RSA_ASN1_VERSION_MULTI          1
  58
  59 #  define RSA_DEFAULT_PRIME_NUM           2
  60
  61 #  define RSA_METHOD_FLAG_NO_CHECK        0x0001
  62 #  define RSA_FLAG_CACHE_PUBLIC           0x0002
  63 #  define RSA_FLAG_CACHE_PRIVATE          0x0004
  64 #  define RSA_FLAG_BLINDING               0x0008
  65 #  define RSA_FLAG_THREAD_SAFE            0x0010
  66 /*
  67  * This flag means the private key operations will be handled by rsa_mod_exp
  68  * and that they do not depend on the private key components being present:
  69  * for example a key stored in external hardware. Without this flag
  70  * bn_mod_exp gets called when private key components are absent.
  71  */
  72 #  define RSA_FLAG_EXT_PKEY               0x0020
  73
  74 /*
  75  * new with 0.9.6j and 0.9.7b; the built-in
  76  * RSA implementation now uses blinding by
  77  * default (ignoring RSA_FLAG_BLINDING),
  78  * but other engines might not need it
  79  */
  80 #  define RSA_FLAG_NO_BLINDING            0x0080
  81 # endif /* OPENSSL_NO_DEPRECATED_3_0 */
  82 /*
  83  * Does nothing. Previously this switched off constant time behaviour.
  84  */
  85 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
  86 #  define RSA_FLAG_NO_CONSTTIME           0x0000
  87 # endif
  88 /* deprecated name for the flag*/
  89 /*
  90  * new with 0.9.7h; the built-in RSA
  91  * implementation now uses constant time
  92  * modular exponentiation for secret exponents
  93  * by default. This flag causes the
  94  * faster variable sliding window method to
  95  * be used for all exponents.
  96  */
  97 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
  98 #  define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
  99 # endif
 100
 101 /*-
 102  * New with 3.0: use part of the flags to denote exact type of RSA key,
 103  * some of which are limited to specific signature and encryption schemes.
 104  * These different types share the same RSA structure, but indicate the
 105  * use of certain fields in that structure.
 106  * Currently known are:
 107  * RSA          - this is the "normal" unlimited RSA structure (typenum 0)
 108  * RSASSA-PSS   - indicates that the PSS parameters are used.
 109  * RSAES-OAEP   - no specific field used for the moment, but OAEP padding
 110  *                is expected.  (currently unused)
 111  *
 112  * 4 bits allow for 16 types
 113  */
 114 # define RSA_FLAG_TYPE_MASK            0xF000
 115 # define RSA_FLAG_TYPE_RSA             0x0000
 116 # define RSA_FLAG_TYPE_RSASSAPSS       0x1000
 117 # define RSA_FLAG_TYPE_RSAESOAEP       0x2000
 118
 119 int EVP_PKEY_CTX_set_rsa_padding(EVP_PKEY_CTX *ctx, int pad_mode);
 120 int EVP_PKEY_CTX_get_rsa_padding(EVP_PKEY_CTX *ctx, int *pad_mode);
 121
 122 int EVP_PKEY_CTX_set_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int saltlen);
 123 int EVP_PKEY_CTX_get_rsa_pss_saltlen(EVP_PKEY_CTX *ctx, int *saltlen);
 124
 125 int EVP_PKEY_CTX_set_rsa_keygen_bits(EVP_PKEY_CTX *ctx, int bits);
 126 int EVP_PKEY_CTX_set1_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx, BIGNUM *pubexp);
 127 int EVP_PKEY_CTX_set_rsa_keygen_primes(EVP_PKEY_CTX *ctx, int primes);
 128 int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *ctx, int saltlen);
 129 # ifndef OPENSSL_NO_DEPRECATED_3_0
 130 OSSL_DEPRECATEDIN_3_0
 131 int EVP_PKEY_CTX_set_rsa_keygen_pubexp(EVP_PKEY_CTX *ctx, BIGNUM *pubexp);
 132 # endif
 133
 134 /* Salt length matches digest */
 135 # define RSA_PSS_SALTLEN_DIGEST -1
 136 /* Verify only: auto detect salt length */
 137 # define RSA_PSS_SALTLEN_AUTO   -2
 138 /* Set salt length to maximum possible */
 139 # define RSA_PSS_SALTLEN_MAX    -3
 140 /* Old compatible max salt length for sign only */
 141 # define RSA_PSS_SALTLEN_MAX_SIGN    -2
 142
 143 int EVP_PKEY_CTX_set_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
 144 int EVP_PKEY_CTX_set_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, const char *mdname,
 145                                       const char *mdprops);
 146 int EVP_PKEY_CTX_get_rsa_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
 147 int EVP_PKEY_CTX_get_rsa_mgf1_md_name(EVP_PKEY_CTX *ctx, char *name,
 148                                       size_t namelen);
 149 int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
 150 int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md_name(EVP_PKEY_CTX *ctx,
 151                                                  const char *mdname);
 152
 153 int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
 154 int EVP_PKEY_CTX_set_rsa_pss_keygen_md_name(EVP_PKEY_CTX *ctx,
 155                                             const char *mdname,
 156                                             const char *mdprops);
 157
 158 int EVP_PKEY_CTX_set_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
 159 int EVP_PKEY_CTX_set_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, const char *mdname,
 160                                       const char *mdprops);
 161 int EVP_PKEY_CTX_get_rsa_oaep_md(EVP_PKEY_CTX *ctx, const EVP_MD **md);
 162 int EVP_PKEY_CTX_get_rsa_oaep_md_name(EVP_PKEY_CTX *ctx, char *name,
 163                                       size_t namelen);
 164 int EVP_PKEY_CTX_set0_rsa_oaep_label(EVP_PKEY_CTX *ctx, void *label, int llen);
 165 int EVP_PKEY_CTX_get0_rsa_oaep_label(EVP_PKEY_CTX *ctx, unsigned char **label);
 166
 167 # define EVP_PKEY_CTRL_RSA_PADDING       (EVP_PKEY_ALG_CTRL + 1)
 168 # define EVP_PKEY_CTRL_RSA_PSS_SALTLEN   (EVP_PKEY_ALG_CTRL + 2)
 169
 170 # define EVP_PKEY_CTRL_RSA_KEYGEN_BITS   (EVP_PKEY_ALG_CTRL + 3)
 171 # define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
 172 # define EVP_PKEY_CTRL_RSA_MGF1_MD       (EVP_PKEY_ALG_CTRL + 5)
 173
 174 # define EVP_PKEY_CTRL_GET_RSA_PADDING           (EVP_PKEY_ALG_CTRL + 6)
 175 # define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN       (EVP_PKEY_ALG_CTRL + 7)
 176 # define EVP_PKEY_CTRL_GET_RSA_MGF1_MD           (EVP_PKEY_ALG_CTRL + 8)
 177
 178 # define EVP_PKEY_CTRL_RSA_OAEP_MD       (EVP_PKEY_ALG_CTRL + 9)
 179 # define EVP_PKEY_CTRL_RSA_OAEP_LABEL    (EVP_PKEY_ALG_CTRL + 10)
 180
 181 # define EVP_PKEY_CTRL_GET_RSA_OAEP_MD   (EVP_PKEY_ALG_CTRL + 11)
 182 # define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
 183
 184 # define EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES  (EVP_PKEY_ALG_CTRL + 13)
 185
 186 # define RSA_PKCS1_PADDING          1
 187 # define RSA_NO_PADDING             3
 188 # define RSA_PKCS1_OAEP_PADDING     4
 189 # define RSA_X931_PADDING           5
 190
 191 /* EVP_PKEY_ only */
 192 # define RSA_PKCS1_PSS_PADDING      6
 193 # define RSA_PKCS1_WITH_TLS_PADDING 7
 194
 195 # define RSA_PKCS1_PADDING_SIZE    11
 196
 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)
 199
 200 # ifndef OPENSSL_NO_DEPRECATED_3_0
 201 OSSL_DEPRECATEDIN_3_0 RSA *RSA_new(void);
 202 OSSL_DEPRECATEDIN_3_0 RSA *RSA_new_method(ENGINE *engine);
 203 OSSL_DEPRECATEDIN_3_0 int RSA_bits(const RSA *rsa);
 204 OSSL_DEPRECATEDIN_3_0 int RSA_size(const RSA *rsa);
 205 OSSL_DEPRECATEDIN_3_0 int RSA_security_bits(const RSA *rsa);
 206
 207 OSSL_DEPRECATEDIN_3_0 int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
 208 OSSL_DEPRECATEDIN_3_0 int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
 209 OSSL_DEPRECATEDIN_3_0 int RSA_set0_crt_params(RSA *r,
 210                                               BIGNUM *dmp1, BIGNUM *dmq1,
 211                                               BIGNUM *iqmp);
 212 OSSL_DEPRECATEDIN_3_0 int RSA_set0_multi_prime_params(RSA *r,
 213                                                       BIGNUM *primes[],
 214                                                       BIGNUM *exps[],
 215                                                       BIGNUM *coeffs[],
 216                                                       int pnum);
 217 OSSL_DEPRECATEDIN_3_0 void RSA_get0_key(const RSA *r,
 218                                         const BIGNUM **n, const BIGNUM **e,
 219                                         const BIGNUM **d);
 220 OSSL_DEPRECATEDIN_3_0 void RSA_get0_factors(const RSA *r,
 221                                             const BIGNUM **p, const BIGNUM **q);
 222 OSSL_DEPRECATEDIN_3_0 int RSA_get_multi_prime_extra_count(const RSA *r);
 223 OSSL_DEPRECATEDIN_3_0 int RSA_get0_multi_prime_factors(const RSA *r,
 224                                                        const BIGNUM *primes[]);
 225 OSSL_DEPRECATEDIN_3_0 void RSA_get0_crt_params(const RSA *r,
 226                                                const BIGNUM **dmp1,
 227                                                const BIGNUM **dmq1,
 228                                                const BIGNUM **iqmp);
 229 OSSL_DEPRECATEDIN_3_0
 230 int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[],
 231                                     const BIGNUM *coeffs[]);
 232 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_n(const RSA *d);
 233 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_e(const RSA *d);
 234 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_d(const RSA *d);
 235 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_p(const RSA *d);
 236 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_q(const RSA *d);
 237 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_dmp1(const RSA *r);
 238 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_dmq1(const RSA *r);
 239 OSSL_DEPRECATEDIN_3_0 const BIGNUM *RSA_get0_iqmp(const RSA *r);
 240 OSSL_DEPRECATEDIN_3_0 const RSA_PSS_PARAMS *RSA_get0_pss_params(const RSA *r);
 241 OSSL_DEPRECATEDIN_3_0 void RSA_clear_flags(RSA *r, int flags);
 242 OSSL_DEPRECATEDIN_3_0 int RSA_test_flags(const RSA *r, int flags);
 243 OSSL_DEPRECATEDIN_3_0 void RSA_set_flags(RSA *r, int flags);
 244 OSSL_DEPRECATEDIN_3_0 int RSA_get_version(RSA *r);
 245 OSSL_DEPRECATEDIN_3_0 ENGINE *RSA_get0_engine(const RSA *r);
 246 # endif  /* !OPENSSL_NO_DEPRECATED_3_0 */
 247
 248 # define EVP_RSA_gen(bits) \
 249     EVP_PKEY_Q_keygen(NULL, NULL, "RSA", (size_t)(0 + (bits)))
 250
 251 /* Deprecated version */
 252 # ifndef OPENSSL_NO_DEPRECATED_0_9_8
 253 OSSL_DEPRECATEDIN_0_9_8 RSA *RSA_generate_key(int bits, unsigned long e, void
 254                                               (*callback) (int, int, void *),
 255                                               void *cb_arg);
 256 # endif
 257
 258 /* New version */
 259 # ifndef OPENSSL_NO_DEPRECATED_3_0
 260 OSSL_DEPRECATEDIN_3_0 int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e,
 261                                               BN_GENCB *cb);
 262 /* Multi-prime version */
 263 OSSL_DEPRECATEDIN_3_0 int RSA_generate_multi_prime_key(RSA *rsa, int bits,
 264                                                        int primes, BIGNUM *e,
 265                                                        BN_GENCB *cb);
 266
 267 OSSL_DEPRECATEDIN_3_0
 268 int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2,
 269                        BIGNUM *q1, BIGNUM *q2,
 270                        const BIGNUM *Xp1, const BIGNUM *Xp2,
 271                        const BIGNUM *Xp, const BIGNUM *Xq1,
 272                        const BIGNUM *Xq2, const BIGNUM *Xq,
 273                        const BIGNUM *e, BN_GENCB *cb);
 274 OSSL_DEPRECATEDIN_3_0 int RSA_X931_generate_key_ex(RSA *rsa, int bits,
 275                                                    const BIGNUM *e,
 276                                                    BN_GENCB *cb);
 277
 278 OSSL_DEPRECATEDIN_3_0 int RSA_check_key(const RSA *);
 279 OSSL_DEPRECATEDIN_3_0 int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
 280         /* next 4 return -1 on error */
 281 OSSL_DEPRECATEDIN_3_0
 282 int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to,
 283                        RSA *rsa, int padding);
 284 OSSL_DEPRECATEDIN_3_0
 285 int RSA_private_encrypt(int flen, const unsigned char *from, unsigned char *to,
 286                         RSA *rsa, int padding);
 287 OSSL_DEPRECATEDIN_3_0
 288 int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to,
 289                        RSA *rsa, int padding);
 290 OSSL_DEPRECATEDIN_3_0
 291 int RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to,
 292                         RSA *rsa, int padding);
 293 OSSL_DEPRECATEDIN_3_0 void RSA_free(RSA *r);
 294 /* "up" the RSA object's reference count */
 295 OSSL_DEPRECATEDIN_3_0 int RSA_up_ref(RSA *r);
 296 OSSL_DEPRECATEDIN_3_0 int RSA_flags(const RSA *r);
 297
 298 OSSL_DEPRECATEDIN_3_0 void RSA_set_default_method(const RSA_METHOD *meth);
 299 OSSL_DEPRECATEDIN_3_0 const RSA_METHOD *RSA_get_default_method(void);
 300 OSSL_DEPRECATEDIN_3_0 const RSA_METHOD *RSA_null_method(void);
 301 OSSL_DEPRECATEDIN_3_0 const RSA_METHOD *RSA_get_method(const RSA *rsa);
 302 OSSL_DEPRECATEDIN_3_0 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
 303
 304 /* these are the actual RSA functions */
 305 OSSL_DEPRECATEDIN_3_0 const RSA_METHOD *RSA_PKCS1_OpenSSL(void);
 306
 307 DECLARE_ASN1_ENCODE_FUNCTIONS_name_attr(OSSL_DEPRECATEDIN_3_0,
 308                                         RSA, RSAPublicKey)
 309 DECLARE_ASN1_ENCODE_FUNCTIONS_name_attr(OSSL_DEPRECATEDIN_3_0,
 310                                         RSA, RSAPrivateKey)
 311 # endif  /* !OPENSSL_NO_DEPRECATED_3_0 */
 312
 313 int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2);
 314
 315 struct rsa_pss_params_st {
 316     X509_ALGOR *hashAlgorithm;
 317     X509_ALGOR *maskGenAlgorithm;
 318     ASN1_INTEGER *saltLength;
 319     ASN1_INTEGER *trailerField;
 320     /* Decoded hash algorithm from maskGenAlgorithm */
 321     X509_ALGOR *maskHash;
 322 };
 323
 324 DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
 325 DECLARE_ASN1_DUP_FUNCTION(RSA_PSS_PARAMS)
 326
 327 typedef struct rsa_oaep_params_st {
 328     X509_ALGOR *hashFunc;
 329     X509_ALGOR *maskGenFunc;
 330     X509_ALGOR *pSourceFunc;
 331     /* Decoded hash algorithm from maskGenFunc */
 332     X509_ALGOR *maskHash;
 333 } RSA_OAEP_PARAMS;
 334
 335 DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
 336
 337 # ifndef OPENSSL_NO_DEPRECATED_3_0
 338 #  ifndef OPENSSL_NO_STDIO
 339 OSSL_DEPRECATEDIN_3_0 int RSA_print_fp(FILE *fp, const RSA *r, int offset);
 340 #  endif
 341
 342 OSSL_DEPRECATEDIN_3_0 int RSA_print(BIO *bp, const RSA *r, int offset);
 343
 344 /*
 345  * The following 2 functions sign and verify a X509_SIG ASN1 object inside
 346  * PKCS#1 padded RSA encryption
 347  */
 348 OSSL_DEPRECATEDIN_3_0 int RSA_sign(int type, const unsigned char *m,
 349                                    unsigned int m_length, unsigned char *sigret,
 350                                    unsigned int *siglen, RSA *rsa);
 351 OSSL_DEPRECATEDIN_3_0 int RSA_verify(int type, const unsigned char *m,
 352                                      unsigned int m_length,
 353                                      const unsigned char *sigbuf,
 354                                      unsigned int siglen, RSA *rsa);
 355
 356 /*
 357  * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
 358  * PKCS#1 padded RSA encryption
 359  */
 360 OSSL_DEPRECATEDIN_3_0
 361 int RSA_sign_ASN1_OCTET_STRING(int type,
 362                                const unsigned char *m, unsigned int m_length,
 363                                unsigned char *sigret, unsigned int *siglen,
 364                                RSA *rsa);
 365 OSSL_DEPRECATEDIN_3_0
 366 int RSA_verify_ASN1_OCTET_STRING(int type,
 367                                  const unsigned char *m, unsigned int m_length,
 368                                  unsigned char *sigbuf, unsigned int siglen,
 369                                  RSA *rsa);
 370
 371 OSSL_DEPRECATEDIN_3_0 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
 372 OSSL_DEPRECATEDIN_3_0 void RSA_blinding_off(RSA *rsa);
 373 OSSL_DEPRECATEDIN_3_0 BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);
 374
 375 OSSL_DEPRECATEDIN_3_0
 376 int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
 377                                  const unsigned char *f, int fl);
 378 OSSL_DEPRECATEDIN_3_0
 379 int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
 380                                    const unsigned char *f, int fl,
 381                                    int rsa_len);
 382 OSSL_DEPRECATEDIN_3_0
 383 int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
 384                                  const unsigned char *f, int fl);
 385 OSSL_DEPRECATEDIN_3_0
 386 int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
 387                                    const unsigned char *f, int fl,
 388                                    int rsa_len);
 389 OSSL_DEPRECATEDIN_3_0 int PKCS1_MGF1(unsigned char *mask, long len,
 390                                      const unsigned char *seed, long seedlen,
 391                                      const EVP_MD *dgst);
 392 OSSL_DEPRECATEDIN_3_0
 393 int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
 394                                const unsigned char *f, int fl,
 395                                const unsigned char *p, int pl);
 396 OSSL_DEPRECATEDIN_3_0
 397 int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
 398                                  const unsigned char *f, int fl, int rsa_len,
 399                                  const unsigned char *p, int pl);
 400 OSSL_DEPRECATEDIN_3_0
 401 int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
 402                                     const unsigned char *from, int flen,
 403                                     const unsigned char *param, int plen,
 404                                     const EVP_MD *md, const EVP_MD *mgf1md);
 405 OSSL_DEPRECATEDIN_3_0
 406 int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
 407                                       const unsigned char *from, int flen,
 408                                       int num,
 409                                       const unsigned char *param, int plen,
 410                                       const EVP_MD *md, const EVP_MD *mgf1md);
 411 OSSL_DEPRECATEDIN_3_0 int RSA_padding_add_none(unsigned char *to, int tlen,
 412                                                const unsigned char *f, int fl);
 413 OSSL_DEPRECATEDIN_3_0 int RSA_padding_check_none(unsigned char *to, int tlen,
 414                                                  const unsigned char *f, int fl,
 415                                                  int rsa_len);
 416 OSSL_DEPRECATEDIN_3_0 int RSA_padding_add_X931(unsigned char *to, int tlen,
 417                                                const unsigned char *f, int fl);
 418 OSSL_DEPRECATEDIN_3_0 int RSA_padding_check_X931(unsigned char *to, int tlen,
 419                                                  const unsigned char *f, int fl,
 420                                                  int rsa_len);
 421 OSSL_DEPRECATEDIN_3_0 int RSA_X931_hash_id(int nid);
 422
 423 OSSL_DEPRECATEDIN_3_0
 424 int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
 425                          const EVP_MD *Hash, const unsigned char *EM,
 426                          int sLen);
 427 OSSL_DEPRECATEDIN_3_0
 428 int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
 429                               const unsigned char *mHash, const EVP_MD *Hash,
 430                               int sLen);
 431
 432 OSSL_DEPRECATEDIN_3_0
 433 int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
 434                               const EVP_MD *Hash, const EVP_MD *mgf1Hash,
 435                               const unsigned char *EM, int sLen);
 436
 437 OSSL_DEPRECATEDIN_3_0
 438 int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
 439                                    const unsigned char *mHash,
 440                                    const EVP_MD *Hash, const EVP_MD *mgf1Hash,
 441                                    int sLen);
 442
 443 # define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
 444     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
 445 OSSL_DEPRECATEDIN_3_0 int RSA_set_ex_data(RSA *r, int idx, void *arg);
 446 OSSL_DEPRECATEDIN_3_0 void *RSA_get_ex_data(const RSA *r, int idx);
 447
 448 DECLARE_ASN1_DUP_FUNCTION_name_attr(OSSL_DEPRECATEDIN_3_0, RSA, RSAPublicKey)
 449 DECLARE_ASN1_DUP_FUNCTION_name_attr(OSSL_DEPRECATEDIN_3_0, RSA, RSAPrivateKey)
 450
 451 /*
 452  * If this flag is set the RSA method is FIPS compliant and can be used in
 453  * FIPS mode. This is set in the validated module method. If an application
 454  * sets this flag in its own methods it is its responsibility to ensure the
 455  * result is compliant.
 456  */
 457
 458 #  define RSA_FLAG_FIPS_METHOD                    0x0400
 459
 460 /*
 461  * If this flag is set the operations normally disabled in FIPS mode are
 462  * permitted it is then the applications responsibility to ensure that the
 463  * usage is compliant.
 464  */
 465
 466 #  define RSA_FLAG_NON_FIPS_ALLOW                 0x0400
 467 /*
 468  * Application has decided PRNG is good enough to generate a key: don't
 469  * check.
 470  */
 471 #  define RSA_FLAG_CHECKED                        0x0800
 472
 473 OSSL_DEPRECATEDIN_3_0 RSA_METHOD *RSA_meth_new(const char *name, int flags);
 474 OSSL_DEPRECATEDIN_3_0 void RSA_meth_free(RSA_METHOD *meth);
 475 OSSL_DEPRECATEDIN_3_0 RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
 476 OSSL_DEPRECATEDIN_3_0 const char *RSA_meth_get0_name(const RSA_METHOD *meth);
 477 OSSL_DEPRECATEDIN_3_0 int RSA_meth_set1_name(RSA_METHOD *meth,
 478                                              const char *name);
 479 OSSL_DEPRECATEDIN_3_0 int RSA_meth_get_flags(const RSA_METHOD *meth);
 480 OSSL_DEPRECATEDIN_3_0 int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
 481 OSSL_DEPRECATEDIN_3_0 void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
 482 OSSL_DEPRECATEDIN_3_0 int RSA_meth_set0_app_data(RSA_METHOD *meth,
 483                                                  void *app_data);
 484 OSSL_DEPRECATEDIN_3_0
 485 int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth)) (int flen,
 486                                                      const unsigned char *from,
 487                                                      unsigned char *to,
 488                                                      RSA *rsa, int padding);
 489 OSSL_DEPRECATEDIN_3_0
 490 int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
 491                          int (*pub_enc) (int flen, const unsigned char *from,
 492                                          unsigned char *to, RSA *rsa,
 493                                          int padding));
 494 OSSL_DEPRECATEDIN_3_0
 495 int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth)) (int flen,
 496                                                      const unsigned char *from,
 497                                                      unsigned char *to,
 498                                                      RSA *rsa, int padding);
 499 OSSL_DEPRECATEDIN_3_0
 500 int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
 501                          int (*pub_dec) (int flen, const unsigned char *from,
 502                                          unsigned char *to, RSA *rsa,
 503                                          int padding));
 504 OSSL_DEPRECATEDIN_3_0
 505 int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth)) (int flen,
 506                                                       const unsigned char *from,
 507                                                       unsigned char *to,
 508                                                       RSA *rsa, int padding);
 509 OSSL_DEPRECATEDIN_3_0
 510 int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
 511                           int (*priv_enc) (int flen, const unsigned char *from,
 512                                            unsigned char *to, RSA *rsa,
 513                                            int padding));
 514 OSSL_DEPRECATEDIN_3_0
 515 int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth)) (int flen,
 516                                                       const unsigned char *from,
 517                                                       unsigned char *to,
 518                                                       RSA *rsa, int padding);
 519 OSSL_DEPRECATEDIN_3_0
 520 int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
 521                           int (*priv_dec) (int flen, const unsigned char *from,
 522                                            unsigned char *to, RSA *rsa,
 523                                            int padding));
 524 OSSL_DEPRECATEDIN_3_0
 525 int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth)) (BIGNUM *r0,
 526                                                      const BIGNUM *i,
 527                                                      RSA *rsa, BN_CTX *ctx);
 528 OSSL_DEPRECATEDIN_3_0
 529 int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
 530                          int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa,
 531                                          BN_CTX *ctx));
 532 OSSL_DEPRECATEDIN_3_0
 533 int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth)) (BIGNUM *r,
 534                                                         const BIGNUM *a,
 535                                                         const BIGNUM *p,
 536                                                         const BIGNUM *m,
 537                                                         BN_CTX *ctx,
 538                                                         BN_MONT_CTX *m_ctx);
 539 OSSL_DEPRECATEDIN_3_0
 540 int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
 541                             int (*bn_mod_exp) (BIGNUM *r,
 542                                                const BIGNUM *a,
 543                                                const BIGNUM *p,
 544                                                const BIGNUM *m,
 545                                                BN_CTX *ctx,
 546                                                BN_MONT_CTX *m_ctx));
 547 OSSL_DEPRECATEDIN_3_0
 548 int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
 549 OSSL_DEPRECATEDIN_3_0
 550 int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
 551 OSSL_DEPRECATEDIN_3_0
 552 int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
 553 OSSL_DEPRECATEDIN_3_0
 554 int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
 555 OSSL_DEPRECATEDIN_3_0
 556 int (*RSA_meth_get_sign(const RSA_METHOD *meth)) (int type,
 557                                                   const unsigned char *m,
 558                                                   unsigned int m_length,
 559                                                   unsigned char *sigret,
 560                                                   unsigned int *siglen,
 561                                                   const RSA *rsa);
 562 OSSL_DEPRECATEDIN_3_0
 563 int RSA_meth_set_sign(RSA_METHOD *rsa,
 564                       int (*sign) (int type, const unsigned char *m,
 565                                    unsigned int m_length,
 566                                    unsigned char *sigret, unsigned int *siglen,
 567                                    const RSA *rsa));
 568 OSSL_DEPRECATEDIN_3_0
 569 int (*RSA_meth_get_verify(const RSA_METHOD *meth)) (int dtype,
 570                                                     const unsigned char *m,
 571                                                     unsigned int m_length,
 572                                                     const unsigned char *sigbuf,
 573                                                     unsigned int siglen,
 574                                                     const RSA *rsa);
 575 OSSL_DEPRECATEDIN_3_0
 576 int RSA_meth_set_verify(RSA_METHOD *rsa,
 577                         int (*verify) (int dtype, const unsigned char *m,
 578                                        unsigned int m_length,
 579                                        const unsigned char *sigbuf,
 580                                        unsigned int siglen, const RSA *rsa));
 581 OSSL_DEPRECATEDIN_3_0
 582 int (*RSA_meth_get_keygen(const RSA_METHOD *meth)) (RSA *rsa, int bits,
 583                                                     BIGNUM *e, BN_GENCB *cb);
 584 OSSL_DEPRECATEDIN_3_0
 585 int RSA_meth_set_keygen(RSA_METHOD *rsa,
 586                         int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
 587                                        BN_GENCB *cb));
 588 OSSL_DEPRECATEDIN_3_0
 589 int (*RSA_meth_get_multi_prime_keygen(const RSA_METHOD *meth)) (RSA *rsa,
 590                                                                 int bits,
 591                                                                 int primes,
 592                                                                 BIGNUM *e,
 593                                                                 BN_GENCB *cb);
 594 OSSL_DEPRECATEDIN_3_0
 595 int RSA_meth_set_multi_prime_keygen(RSA_METHOD *meth,
 596                                     int (*keygen) (RSA *rsa, int bits,
 597                                                    int primes, BIGNUM *e,
 598                                                    BN_GENCB *cb));
 599 #endif  /* !OPENSSL_NO_DEPRECATED_3_0 */
 600
 601 # ifdef  __cplusplus
 602 }
 603 # endif
 604 #endif