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Edit File : rsa.h \| Size : 21.82 KB
/* * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html / #ifndef HEADER_RSA_H # define HEADER_RSA_H # include <openssl/opensslconf.h> # ifndef OPENSSL_NO_RSA # include <openssl/asn1.h> # include <openssl/bio.h> # include <openssl/crypto.h> # include <openssl/ossl_typ.h> # if OPENSSL_API_COMPAT < 0x10100000L # include <openssl/bn.h> # endif # include <openssl/rsaerr.h> # ifdef __cplusplus extern "C" { # endif / The types RSA and RSA_METHOD are defined in ossl_typ.h / # ifndef OPENSSL_RSA_MAX_MODULUS_BITS # define OPENSSL_RSA_MAX_MODULUS_BITS 16384 # endif # define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024 # ifndef OPENSSL_RSA_SMALL_MODULUS_BITS # define OPENSSL_RSA_SMALL_MODULUS_BITS 3072 # endif # ifndef OPENSSL_RSA_MAX_PUBEXP_BITS / exponent limit enforced for "large" modulus only / # define OPENSSL_RSA_MAX_PUBEXP_BITS 64 # endif # define RSA_3 0x3L # define RSA_F4 0x10001L / based on RFC 8017 appendix A.1.2 / # define RSA_ASN1_VERSION_DEFAULT 0 # define RSA_ASN1_VERSION_MULTI 1 # define RSA_DEFAULT_PRIME_NUM 2 # define RSA_METHOD_FLAG_NO_CHECK 0x0001/ don't check pub/private * match / # define RSA_FLAG_CACHE_PUBLIC 0x0002 # define RSA_FLAG_CACHE_PRIVATE 0x0004 # define RSA_FLAG_BLINDING 0x0008 # define RSA_FLAG_THREAD_SAFE 0x0010 / * This flag means the private key operations will be handled by rsa_mod_exp * and that they do not depend on the private key components being present: * for example a key stored in external hardware. Without this flag * bn_mod_exp gets called when private key components are absent. / # define RSA_FLAG_EXT_PKEY 0x0020 / * new with 0.9.6j and 0.9.7b; the built-in * RSA implementation now uses blinding by * default (ignoring RSA_FLAG_BLINDING), * but other engines might not need it / # define RSA_FLAG_NO_BLINDING 0x0080 # if OPENSSL_API_COMPAT < 0x10100000L / * Does nothing. Previously this switched off constant time behaviour. / # define RSA_FLAG_NO_CONSTTIME 0x0000 # endif # if OPENSSL_API_COMPAT < 0x00908000L / deprecated name for the flag/ / * new with 0.9.7h; the built-in RSA * implementation now uses constant time * modular exponentiation for secret exponents * by default. This flag causes the * faster variable sliding window method to * be used for all exponents. / # define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME # endif # define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \ RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_RSA_PADDING, pad, NULL) # define EVP_PKEY_CTX_get_rsa_padding(ctx, ppad) \ RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, ppad) # define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \ RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN\|EVP_PKEY_OP_VERIFY), \ EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL) / Salt length matches digest / # define RSA_PSS_SALTLEN_DIGEST -1 / Verify only: auto detect salt length / # define RSA_PSS_SALTLEN_AUTO -2 / Set salt length to maximum possible / # define RSA_PSS_SALTLEN_MAX -3 / Old compatible max salt length for sign only / # define RSA_PSS_SALTLEN_MAX_SIGN -2 # define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \ EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL) # define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \ RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN\|EVP_PKEY_OP_VERIFY), \ EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, plen) # define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \ RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \ EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL) # define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \ RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \ EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp) # define EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, primes) \ RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \ EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES, primes, NULL) # define EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md) \ RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG \| EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void )(md)) # define EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(ctx, md) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \ EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void )(md)) # define EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void )(md)) # define EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \ RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG \| EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void )(pmd)) # define EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void )(pmd)) # define EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void )(l)) # define EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT, \ EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void )(l)) # define EVP_PKEY_CTX_set_rsa_pss_keygen_md(ctx, md) \ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, \ EVP_PKEY_OP_KEYGEN, EVP_PKEY_CTRL_MD, \ 0, (void )(md)) # define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1) # define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 2) # define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 3) # define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4) # define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 5) # define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 6) # define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 7) # define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 8) # define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 9) # define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 10) # define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 11) # define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12) # define EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES (EVP_PKEY_ALG_CTRL + 13) # define EVP_PKEY_CTRL_RSA_IMPLICIT_REJECTION (EVP_PKEY_ALG_CTRL + 14) # define RSA_PKCS1_PADDING 1 # define RSA_SSLV23_PADDING 2 # define RSA_NO_PADDING 3 # define RSA_PKCS1_OAEP_PADDING 4 # define RSA_X931_PADDING 5 / EVP_PKEY_ only / # define RSA_PKCS1_PSS_PADDING 6 / internal RSA_ only / # define RSA_PKCS1_NO_IMPLICIT_REJECT_PADDING 8 # define RSA_PKCS1_PADDING_SIZE 11 # define RSA_set_app_data(s,arg) RSA_set_ex_data(s,0,arg) # define RSA_get_app_data(s) RSA_get_ex_data(s,0) RSA RSA_new(void); RSA RSA_new_method(ENGINE engine); int RSA_bits(const RSA rsa); int RSA_size(const RSA rsa); int RSA_security_bits(const RSA rsa); int RSA_set0_key(RSA r, BIGNUM n, BIGNUM e, BIGNUM d); int RSA_set0_factors(RSA r, BIGNUM p, BIGNUM q); int RSA_set0_crt_params(RSA r,BIGNUM dmp1, BIGNUM dmq1, BIGNUM iqmp); int RSA_set0_multi_prime_params(RSA r, BIGNUM primes[], BIGNUM exps[], BIGNUM coeffs[], int pnum); void RSA_get0_key(const RSA r, const BIGNUM n, const BIGNUM e, const BIGNUM d); void RSA_get0_factors(const RSA r, const BIGNUM p, const BIGNUM q); int RSA_get_multi_prime_extra_count(const RSA r); int RSA_get0_multi_prime_factors(const RSA r, const BIGNUM primes[]); void RSA_get0_crt_params(const RSA r, const BIGNUM dmp1, const BIGNUM dmq1, const BIGNUM *iqmp); int RSA_get0_multi_prime_crt_params(const RSA r, const BIGNUM exps[], const BIGNUM coeffs[]); const BIGNUM RSA_get0_n(const RSA d); const BIGNUM RSA_get0_e(const RSA d); const BIGNUM RSA_get0_d(const RSA d); const BIGNUM RSA_get0_p(const RSA d); const BIGNUM RSA_get0_q(const RSA d); const BIGNUM RSA_get0_dmp1(const RSA r); const BIGNUM RSA_get0_dmq1(const RSA r); const BIGNUM RSA_get0_iqmp(const RSA r); const RSA_PSS_PARAMS RSA_get0_pss_params(const RSA r); void RSA_clear_flags(RSA r, int flags); int RSA_test_flags(const RSA r, int flags); void RSA_set_flags(RSA r, int flags); int RSA_get_version(RSA r); ENGINE RSA_get0_engine(const RSA r); /* Deprecated version / DEPRECATEDIN_0_9_8(RSA RSA_generate_key(int bits, unsigned long e, void (callback) (int, int, void ), void cb_arg)) / New version / int RSA_generate_key_ex(RSA rsa, int bits, BIGNUM e, BN_GENCB cb); /* Multi-prime version / int RSA_generate_multi_prime_key(RSA rsa, int bits, int primes, BIGNUM e, BN_GENCB cb); int RSA_X931_derive_ex(RSA rsa, BIGNUM p1, BIGNUM p2, BIGNUM q1, BIGNUM q2, const BIGNUM Xp1, const BIGNUM Xp2, const BIGNUM Xp, const BIGNUM Xq1, const BIGNUM Xq2, const BIGNUM Xq, const BIGNUM e, BN_GENCB cb); int RSA_X931_generate_key_ex(RSA rsa, int bits, const BIGNUM e, BN_GENCB cb); int RSA_check_key(const RSA ); int RSA_check_key_ex(const RSA , BN_GENCB cb); / next 4 return -1 on error / int RSA_public_encrypt(int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_private_encrypt(int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_public_decrypt(int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_private_decrypt(int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); void RSA_free(RSA r); /* "up" the RSA object's reference count / int RSA_up_ref(RSA r); int RSA_flags(const RSA r); void RSA_set_default_method(const RSA_METHOD meth); const RSA_METHOD RSA_get_default_method(void); const RSA_METHOD RSA_null_method(void); const RSA_METHOD RSA_get_method(const RSA rsa); int RSA_set_method(RSA rsa, const RSA_METHOD meth); /* these are the actual RSA functions / const RSA_METHOD RSA_PKCS1_OpenSSL(void); int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX ctx, int optype, int cmd, int p1, void p2); DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey) DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey) struct rsa_pss_params_st { X509_ALGOR hashAlgorithm; X509_ALGOR maskGenAlgorithm; ASN1_INTEGER saltLength; ASN1_INTEGER trailerField; /* Decoded hash algorithm from maskGenAlgorithm / X509_ALGOR maskHash; }; DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS) typedef struct rsa_oaep_params_st { X509_ALGOR hashFunc; X509_ALGOR maskGenFunc; X509_ALGOR pSourceFunc; / Decoded hash algorithm from maskGenFunc / X509_ALGOR maskHash; } RSA_OAEP_PARAMS; DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS) # ifndef OPENSSL_NO_STDIO int RSA_print_fp(FILE fp, const RSA r, int offset); # endif int RSA_print(BIO bp, const RSA r, int offset); /* * The following 2 functions sign and verify a X509_SIG ASN1 object inside * PKCS#1 padded RSA encryption / int RSA_sign(int type, const unsigned char m, unsigned int m_length, unsigned char sigret, unsigned int siglen, RSA rsa); int RSA_verify(int type, const unsigned char m, unsigned int m_length, const unsigned char sigbuf, unsigned int siglen, RSA rsa); /* * The following 2 function sign and verify a ASN1_OCTET_STRING object inside * PKCS#1 padded RSA encryption / int RSA_sign_ASN1_OCTET_STRING(int type, const unsigned char m, unsigned int m_length, unsigned char sigret, unsigned int siglen, RSA rsa); int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char m, unsigned int m_length, unsigned char sigbuf, unsigned int siglen, RSA rsa); int RSA_blinding_on(RSA rsa, BN_CTX ctx); void RSA_blinding_off(RSA rsa); BN_BLINDING RSA_setup_blinding(RSA rsa, BN_CTX ctx); int RSA_padding_add_PKCS1_type_1(unsigned char to, int tlen, const unsigned char f, int fl); int RSA_padding_check_PKCS1_type_1(unsigned char to, int tlen, const unsigned char f, int fl, int rsa_len); int RSA_padding_add_PKCS1_type_2(unsigned char to, int tlen, const unsigned char f, int fl); int RSA_padding_check_PKCS1_type_2(unsigned char to, int tlen, const unsigned char f, int fl, int rsa_len); int PKCS1_MGF1(unsigned char mask, long len, const unsigned char seed, long seedlen, const EVP_MD dgst); int RSA_padding_add_PKCS1_OAEP(unsigned char to, int tlen, const unsigned char f, int fl, const unsigned char p, int pl); int RSA_padding_check_PKCS1_OAEP(unsigned char to, int tlen, const unsigned char f, int fl, int rsa_len, const unsigned char p, int pl); int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char to, int tlen, const unsigned char from, int flen, const unsigned char param, int plen, const EVP_MD md, const EVP_MD mgf1md); int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char to, int tlen, const unsigned char from, int flen, int num, const unsigned char param, int plen, const EVP_MD md, const EVP_MD mgf1md); int RSA_padding_add_SSLv23(unsigned char to, int tlen, const unsigned char f, int fl); int RSA_padding_check_SSLv23(unsigned char to, int tlen, const unsigned char f, int fl, int rsa_len); int RSA_padding_add_none(unsigned char to, int tlen, const unsigned char f, int fl); int RSA_padding_check_none(unsigned char to, int tlen, const unsigned char f, int fl, int rsa_len); int RSA_padding_add_X931(unsigned char to, int tlen, const unsigned char f, int fl); int RSA_padding_check_X931(unsigned char to, int tlen, const unsigned char f, int fl, int rsa_len); int RSA_X931_hash_id(int nid); int RSA_verify_PKCS1_PSS(RSA rsa, const unsigned char mHash, const EVP_MD Hash, const unsigned char EM, int sLen); int RSA_padding_add_PKCS1_PSS(RSA rsa, unsigned char EM, const unsigned char mHash, const EVP_MD Hash, int sLen); int RSA_verify_PKCS1_PSS_mgf1(RSA rsa, const unsigned char mHash, const EVP_MD Hash, const EVP_MD mgf1Hash, const unsigned char EM, int sLen); int RSA_padding_add_PKCS1_PSS_mgf1(RSA rsa, unsigned char EM, const unsigned char mHash, const EVP_MD Hash, const EVP_MD mgf1Hash, int sLen); #define RSA_get_ex_new_index(l, p, newf, dupf, freef) \ CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef) int RSA_set_ex_data(RSA r, int idx, void arg); void RSA_get_ex_data(const RSA r, int idx); RSA RSAPublicKey_dup(RSA rsa); RSA RSAPrivateKey_dup(RSA rsa); / * If this flag is set the RSA method is FIPS compliant and can be used in * FIPS mode. This is set in the validated module method. If an application * sets this flag in its own methods it is its responsibility to ensure the * result is compliant. / # define RSA_FLAG_FIPS_METHOD 0x0400 / * If this flag is set the operations normally disabled in FIPS mode are * permitted it is then the applications responsibility to ensure that the * usage is compliant. / # define RSA_FLAG_NON_FIPS_ALLOW 0x0400 / * Application has decided PRNG is good enough to generate a key: don't * check. / # define RSA_FLAG_CHECKED 0x0800 RSA_METHOD RSA_meth_new(const char name, int flags); void RSA_meth_free(RSA_METHOD meth); RSA_METHOD RSA_meth_dup(const RSA_METHOD meth); const char RSA_meth_get0_name(const RSA_METHOD meth); int RSA_meth_set1_name(RSA_METHOD meth, const char name); int RSA_meth_get_flags(const RSA_METHOD meth); int RSA_meth_set_flags(RSA_METHOD meth, int flags); void RSA_meth_get0_app_data(const RSA_METHOD meth); int RSA_meth_set0_app_data(RSA_METHOD meth, void app_data); int (RSA_meth_get_pub_enc(const RSA_METHOD meth)) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_meth_set_pub_enc(RSA_METHOD rsa, int (pub_enc) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding)); int (RSA_meth_get_pub_dec(const RSA_METHOD meth)) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_meth_set_pub_dec(RSA_METHOD rsa, int (pub_dec) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding)); int (RSA_meth_get_priv_enc(const RSA_METHOD meth)) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_meth_set_priv_enc(RSA_METHOD rsa, int (priv_enc) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding)); int (RSA_meth_get_priv_dec(const RSA_METHOD meth)) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding); int RSA_meth_set_priv_dec(RSA_METHOD rsa, int (priv_dec) (int flen, const unsigned char from, unsigned char to, RSA rsa, int padding)); int (RSA_meth_get_mod_exp(const RSA_METHOD meth)) (BIGNUM r0, const BIGNUM i, RSA rsa, BN_CTX ctx); int RSA_meth_set_mod_exp(RSA_METHOD rsa, int (mod_exp) (BIGNUM r0, const BIGNUM i, RSA rsa, BN_CTX ctx)); int (RSA_meth_get_bn_mod_exp(const RSA_METHOD meth)) (BIGNUM r, const BIGNUM a, const BIGNUM p, const BIGNUM m, BN_CTX ctx, BN_MONT_CTX m_ctx); int RSA_meth_set_bn_mod_exp(RSA_METHOD rsa, int (bn_mod_exp) (BIGNUM r, const BIGNUM a, const BIGNUM p, const BIGNUM m, BN_CTX ctx, BN_MONT_CTX m_ctx)); int (RSA_meth_get_init(const RSA_METHOD meth)) (RSA rsa); int RSA_meth_set_init(RSA_METHOD rsa, int (init) (RSA rsa)); int (RSA_meth_get_finish(const RSA_METHOD meth)) (RSA rsa); int RSA_meth_set_finish(RSA_METHOD rsa, int (finish) (RSA rsa)); int (RSA_meth_get_sign(const RSA_METHOD meth)) (int type, const unsigned char m, unsigned int m_length, unsigned char sigret, unsigned int siglen, const RSA rsa); int RSA_meth_set_sign(RSA_METHOD rsa, int (sign) (int type, const unsigned char m, unsigned int m_length, unsigned char sigret, unsigned int siglen, const RSA rsa)); int (RSA_meth_get_verify(const RSA_METHOD meth)) (int dtype, const unsigned char m, unsigned int m_length, const unsigned char sigbuf, unsigned int siglen, const RSA rsa); int RSA_meth_set_verify(RSA_METHOD rsa, int (verify) (int dtype, const unsigned char m, unsigned int m_length, const unsigned char sigbuf, unsigned int siglen, const RSA rsa)); int (RSA_meth_get_keygen(const RSA_METHOD meth)) (RSA rsa, int bits, BIGNUM e, BN_GENCB cb); int RSA_meth_set_keygen(RSA_METHOD rsa, int (keygen) (RSA rsa, int bits, BIGNUM e, BN_GENCB cb)); int (RSA_meth_get_multi_prime_keygen(const RSA_METHOD meth)) (RSA rsa, int bits, int primes, BIGNUM e, BN_GENCB cb); int RSA_meth_set_multi_prime_keygen(RSA_METHOD meth, int (keygen) (RSA rsa, int bits, int primes, BIGNUM e, BN_GENCB cb)); # ifdef __cplusplus } # endif # endif #endif Back

Edit File : rsa.h | Size : 21.82 KB

/*
 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_RSA_H
# define HEADER_RSA_H

# include <openssl/opensslconf.h>

# ifndef OPENSSL_NO_RSA
# include <openssl/asn1.h>
# include <openssl/bio.h>
# include <openssl/crypto.h>
# include <openssl/ossl_typ.h>
# if OPENSSL_API_COMPAT < 0x10100000L
#  include <openssl/bn.h>
# endif
# include <openssl/rsaerr.h>
# ifdef  __cplusplus
extern "C" {
# endif

/* The types RSA and RSA_METHOD are defined in ossl_typ.h */

# ifndef OPENSSL_RSA_MAX_MODULUS_BITS
#  define OPENSSL_RSA_MAX_MODULUS_BITS   16384
# endif

# define OPENSSL_RSA_FIPS_MIN_MODULUS_BITS 1024

# ifndef OPENSSL_RSA_SMALL_MODULUS_BITS
#  define OPENSSL_RSA_SMALL_MODULUS_BITS 3072
# endif
# ifndef OPENSSL_RSA_MAX_PUBEXP_BITS

/* exponent limit enforced for "large" modulus only */
#  define OPENSSL_RSA_MAX_PUBEXP_BITS    64
# endif

# define RSA_3   0x3L
# define RSA_F4  0x10001L

/* based on RFC 8017 appendix A.1.2 */
# define RSA_ASN1_VERSION_DEFAULT        0
# define RSA_ASN1_VERSION_MULTI          1

# define RSA_DEFAULT_PRIME_NUM           2

# define RSA_METHOD_FLAG_NO_CHECK        0x0001/* don't check pub/private
                                                * match */

# define RSA_FLAG_CACHE_PUBLIC           0x0002
# define RSA_FLAG_CACHE_PRIVATE          0x0004
# define RSA_FLAG_BLINDING               0x0008
# define RSA_FLAG_THREAD_SAFE            0x0010
/*
 * This flag means the private key operations will be handled by rsa_mod_exp
 * and that they do not depend on the private key components being present:
 * for example a key stored in external hardware. Without this flag
 * bn_mod_exp gets called when private key components are absent.
 */
# define RSA_FLAG_EXT_PKEY               0x0020

/*
 * new with 0.9.6j and 0.9.7b; the built-in
 * RSA implementation now uses blinding by
 * default (ignoring RSA_FLAG_BLINDING),
 * but other engines might not need it
 */
# define RSA_FLAG_NO_BLINDING            0x0080
# if OPENSSL_API_COMPAT < 0x10100000L
/*
 * Does nothing. Previously this switched off constant time behaviour.
 */
#  define RSA_FLAG_NO_CONSTTIME           0x0000
# endif
# if OPENSSL_API_COMPAT < 0x00908000L
/* deprecated name for the flag*/
/*
 * new with 0.9.7h; the built-in RSA
 * implementation now uses constant time
 * modular exponentiation for secret exponents
 * by default. This flag causes the
 * faster variable sliding window method to
 * be used for all exponents.
 */
#  define RSA_FLAG_NO_EXP_CONSTTIME RSA_FLAG_NO_CONSTTIME
# endif

# define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
        RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_RSA_PADDING, pad, NULL)

# define EVP_PKEY_CTX_get_rsa_padding(ctx, ppad) \
        RSA_pkey_ctx_ctrl(ctx, -1, EVP_PKEY_CTRL_GET_RSA_PADDING, 0, ppad)

# define EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, len) \
        RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
                          EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)
/* Salt length matches digest */
# define RSA_PSS_SALTLEN_DIGEST -1
/* Verify only: auto detect salt length */
# define RSA_PSS_SALTLEN_AUTO   -2
/* Set salt length to maximum possible */
# define RSA_PSS_SALTLEN_MAX    -3
/* Old compatible max salt length for sign only */
# define RSA_PSS_SALTLEN_MAX_SIGN    -2

# define EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(ctx, len) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
                          EVP_PKEY_CTRL_RSA_PSS_SALTLEN, len, NULL)

# define EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, plen) \
        RSA_pkey_ctx_ctrl(ctx, (EVP_PKEY_OP_SIGN|EVP_PKEY_OP_VERIFY), \
                          EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, 0, plen)

# define EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) \
        RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
                          EVP_PKEY_CTRL_RSA_KEYGEN_BITS, bits, NULL)

# define EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp) \
        RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
                          EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, 0, pubexp)

# define EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, primes) \
        RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_KEYGEN, \
                          EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES, primes, NULL)

# define  EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md) \
        RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
                          EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))

# define  EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(ctx, md) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN, \
                          EVP_PKEY_CTRL_RSA_MGF1_MD, 0, (void *)(md))

# define  EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                          EVP_PKEY_CTRL_RSA_OAEP_MD, 0, (void *)(md))

# define  EVP_PKEY_CTX_get_rsa_mgf1_md(ctx, pmd) \
        RSA_pkey_ctx_ctrl(ctx, EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT, \
                          EVP_PKEY_CTRL_GET_RSA_MGF1_MD, 0, (void *)(pmd))

# define  EVP_PKEY_CTX_get_rsa_oaep_md(ctx, pmd) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                          EVP_PKEY_CTRL_GET_RSA_OAEP_MD, 0, (void *)(pmd))

# define  EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, l, llen) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                          EVP_PKEY_CTRL_RSA_OAEP_LABEL, llen, (void *)(l))

# define  EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, l) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, EVP_PKEY_OP_TYPE_CRYPT,  \
                          EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, 0, (void *)(l))

# define  EVP_PKEY_CTX_set_rsa_pss_keygen_md(ctx, md) \
        EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA_PSS,  \
                          EVP_PKEY_OP_KEYGEN, EVP_PKEY_CTRL_MD,  \
                          0, (void *)(md))

# define EVP_PKEY_CTRL_RSA_PADDING       (EVP_PKEY_ALG_CTRL + 1)
# define EVP_PKEY_CTRL_RSA_PSS_SALTLEN   (EVP_PKEY_ALG_CTRL + 2)

# define EVP_PKEY_CTRL_RSA_KEYGEN_BITS   (EVP_PKEY_ALG_CTRL + 3)
# define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
# define EVP_PKEY_CTRL_RSA_MGF1_MD       (EVP_PKEY_ALG_CTRL + 5)

# define EVP_PKEY_CTRL_GET_RSA_PADDING           (EVP_PKEY_ALG_CTRL + 6)
# define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN       (EVP_PKEY_ALG_CTRL + 7)
# define EVP_PKEY_CTRL_GET_RSA_MGF1_MD           (EVP_PKEY_ALG_CTRL + 8)

# define EVP_PKEY_CTRL_RSA_OAEP_MD       (EVP_PKEY_ALG_CTRL + 9)
# define EVP_PKEY_CTRL_RSA_OAEP_LABEL    (EVP_PKEY_ALG_CTRL + 10)

# define EVP_PKEY_CTRL_GET_RSA_OAEP_MD   (EVP_PKEY_ALG_CTRL + 11)
# define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)

# define EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES  (EVP_PKEY_ALG_CTRL + 13)

# define EVP_PKEY_CTRL_RSA_IMPLICIT_REJECTION (EVP_PKEY_ALG_CTRL + 14)

# define RSA_PKCS1_PADDING       1
# define RSA_SSLV23_PADDING      2
# define RSA_NO_PADDING          3
# define RSA_PKCS1_OAEP_PADDING  4
# define RSA_X931_PADDING        5
/* EVP_PKEY_ only */
# define RSA_PKCS1_PSS_PADDING   6

/* internal RSA_ only */
# define RSA_PKCS1_NO_IMPLICIT_REJECT_PADDING 8

# define RSA_PKCS1_PADDING_SIZE  11

# define RSA_set_app_data(s,arg)         RSA_set_ex_data(s,0,arg)
# define RSA_get_app_data(s)             RSA_get_ex_data(s,0)

RSA *RSA_new(void);
RSA *RSA_new_method(ENGINE *engine);
int RSA_bits(const RSA *rsa);
int RSA_size(const RSA *rsa);
int RSA_security_bits(const RSA *rsa);

int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
int RSA_set0_crt_params(RSA *r,BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
int RSA_set0_multi_prime_params(RSA *r, BIGNUM *primes[], BIGNUM *exps[],
                                BIGNUM *coeffs[], int pnum);
void RSA_get0_key(const RSA *r,
                  const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
int RSA_get_multi_prime_extra_count(const RSA *r);
int RSA_get0_multi_prime_factors(const RSA *r, const BIGNUM *primes[]);
void RSA_get0_crt_params(const RSA *r,
                         const BIGNUM **dmp1, const BIGNUM **dmq1,
                         const BIGNUM **iqmp);
int RSA_get0_multi_prime_crt_params(const RSA *r, const BIGNUM *exps[],
                                    const BIGNUM *coeffs[]);
const BIGNUM *RSA_get0_n(const RSA *d);
const BIGNUM *RSA_get0_e(const RSA *d);
const BIGNUM *RSA_get0_d(const RSA *d);
const BIGNUM *RSA_get0_p(const RSA *d);
const BIGNUM *RSA_get0_q(const RSA *d);
const BIGNUM *RSA_get0_dmp1(const RSA *r);
const BIGNUM *RSA_get0_dmq1(const RSA *r);
const BIGNUM *RSA_get0_iqmp(const RSA *r);
const RSA_PSS_PARAMS *RSA_get0_pss_params(const RSA *r);
void RSA_clear_flags(RSA *r, int flags);
int RSA_test_flags(const RSA *r, int flags);
void RSA_set_flags(RSA *r, int flags);
int RSA_get_version(RSA *r);
ENGINE *RSA_get0_engine(const RSA *r);

/* Deprecated version */
DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, void
                                         (*callback) (int, int, void *),
                                         void *cb_arg))

/* New version */
int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
/* Multi-prime version */
int RSA_generate_multi_prime_key(RSA *rsa, int bits, int primes,
                                 BIGNUM *e, BN_GENCB *cb);

int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
                       BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
                       const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
                       const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb);
int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
                             BN_GENCB *cb);

int RSA_check_key(const RSA *);
int RSA_check_key_ex(const RSA *, BN_GENCB *cb);
        /* next 4 return -1 on error */
int RSA_public_encrypt(int flen, const unsigned char *from,
                       unsigned char *to, RSA *rsa, int padding);
int RSA_private_encrypt(int flen, const unsigned char *from,
                        unsigned char *to, RSA *rsa, int padding);
int RSA_public_decrypt(int flen, const unsigned char *from,
                       unsigned char *to, RSA *rsa, int padding);
int RSA_private_decrypt(int flen, const unsigned char *from,
                        unsigned char *to, RSA *rsa, int padding);
void RSA_free(RSA *r);
/* "up" the RSA object's reference count */
int RSA_up_ref(RSA *r);

int RSA_flags(const RSA *r);

void RSA_set_default_method(const RSA_METHOD *meth);
const RSA_METHOD *RSA_get_default_method(void);
const RSA_METHOD *RSA_null_method(void);
const RSA_METHOD *RSA_get_method(const RSA *rsa);
int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);

/* these are the actual RSA functions */
const RSA_METHOD *RSA_PKCS1_OpenSSL(void);

int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2);

DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey)
DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey)

struct rsa_pss_params_st {
    X509_ALGOR *hashAlgorithm;
    X509_ALGOR *maskGenAlgorithm;
    ASN1_INTEGER *saltLength;
    ASN1_INTEGER *trailerField;
    /* Decoded hash algorithm from maskGenAlgorithm */
    X509_ALGOR *maskHash;
};

DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)

typedef struct rsa_oaep_params_st {
    X509_ALGOR *hashFunc;
    X509_ALGOR *maskGenFunc;
    X509_ALGOR *pSourceFunc;
    /* Decoded hash algorithm from maskGenFunc */
    X509_ALGOR *maskHash;
} RSA_OAEP_PARAMS;

DECLARE_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)

# ifndef OPENSSL_NO_STDIO
int RSA_print_fp(FILE *fp, const RSA *r, int offset);
# endif

int RSA_print(BIO *bp, const RSA *r, int offset);

/*
 * The following 2 functions sign and verify a X509_SIG ASN1 object inside
 * PKCS#1 padded RSA encryption
 */
int RSA_sign(int type, const unsigned char *m, unsigned int m_length,
             unsigned char *sigret, unsigned int *siglen, RSA *rsa);
int RSA_verify(int type, const unsigned char *m, unsigned int m_length,
               const unsigned char *sigbuf, unsigned int siglen, RSA *rsa);

/*
 * The following 2 function sign and verify a ASN1_OCTET_STRING object inside
 * PKCS#1 padded RSA encryption
 */
int RSA_sign_ASN1_OCTET_STRING(int type,
                               const unsigned char *m, unsigned int m_length,
                               unsigned char *sigret, unsigned int *siglen,
                               RSA *rsa);
int RSA_verify_ASN1_OCTET_STRING(int type, const unsigned char *m,
                                 unsigned int m_length, unsigned char *sigbuf,
                                 unsigned int siglen, RSA *rsa);

int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
void RSA_blinding_off(RSA *rsa);
BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *ctx);

int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
                                 const unsigned char *f, int fl);
int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
                                   const unsigned char *f, int fl,
                                   int rsa_len);
int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
                                 const unsigned char *f, int fl);
int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
                                   const unsigned char *f, int fl,
                                   int rsa_len);
int PKCS1_MGF1(unsigned char *mask, long len, const unsigned char *seed,
               long seedlen, const EVP_MD *dgst);
int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
                               const unsigned char *f, int fl,
                               const unsigned char *p, int pl);
int RSA_padding_check_PKCS1_OAEP(unsigned char *to, int tlen,
                                 const unsigned char *f, int fl, int rsa_len,
                                 const unsigned char *p, int pl);
int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
                                    const unsigned char *from, int flen,
                                    const unsigned char *param, int plen,
                                    const EVP_MD *md, const EVP_MD *mgf1md);
int RSA_padding_check_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
                                      const unsigned char *from, int flen,
                                      int num, const unsigned char *param,
                                      int plen, const EVP_MD *md,
                                      const EVP_MD *mgf1md);
int RSA_padding_add_SSLv23(unsigned char *to, int tlen,
                           const unsigned char *f, int fl);
int RSA_padding_check_SSLv23(unsigned char *to, int tlen,
                             const unsigned char *f, int fl, int rsa_len);
int RSA_padding_add_none(unsigned char *to, int tlen, const unsigned char *f,
                         int fl);
int RSA_padding_check_none(unsigned char *to, int tlen,
                           const unsigned char *f, int fl, int rsa_len);
int RSA_padding_add_X931(unsigned char *to, int tlen, const unsigned char *f,
                         int fl);
int RSA_padding_check_X931(unsigned char *to, int tlen,
                           const unsigned char *f, int fl, int rsa_len);
int RSA_X931_hash_id(int nid);

int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
                         const EVP_MD *Hash, const unsigned char *EM,
                         int sLen);
int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
                              const unsigned char *mHash, const EVP_MD *Hash,
                              int sLen);

int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
                              const EVP_MD *Hash, const EVP_MD *mgf1Hash,
                              const unsigned char *EM, int sLen);

int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
                                   const unsigned char *mHash,
                                   const EVP_MD *Hash, const EVP_MD *mgf1Hash,
                                   int sLen);

#define RSA_get_ex_new_index(l, p, newf, dupf, freef) \
    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, l, p, newf, dupf, freef)
int RSA_set_ex_data(RSA *r, int idx, void *arg);
void *RSA_get_ex_data(const RSA *r, int idx);

RSA *RSAPublicKey_dup(RSA *rsa);
RSA *RSAPrivateKey_dup(RSA *rsa);

/*
 * If this flag is set the RSA method is FIPS compliant and can be used in
 * FIPS mode. This is set in the validated module method. If an application
 * sets this flag in its own methods it is its responsibility to ensure the
 * result is compliant.
 */

# define RSA_FLAG_FIPS_METHOD                    0x0400

/*
 * If this flag is set the operations normally disabled in FIPS mode are
 * permitted it is then the applications responsibility to ensure that the
 * usage is compliant.
 */

# define RSA_FLAG_NON_FIPS_ALLOW                 0x0400
/*
 * Application has decided PRNG is good enough to generate a key: don't
 * check.
 */
# define RSA_FLAG_CHECKED                        0x0800

RSA_METHOD *RSA_meth_new(const char *name, int flags);
void RSA_meth_free(RSA_METHOD *meth);
RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth);
const char *RSA_meth_get0_name(const RSA_METHOD *meth);
int RSA_meth_set1_name(RSA_METHOD *meth, const char *name);
int RSA_meth_get_flags(const RSA_METHOD *meth);
int RSA_meth_set_flags(RSA_METHOD *meth, int flags);
void *RSA_meth_get0_app_data(const RSA_METHOD *meth);
int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data);
int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_pub_enc(RSA_METHOD *rsa,
                         int (*pub_enc) (int flen, const unsigned char *from,
                                         unsigned char *to, RSA *rsa,
                                         int padding));
int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_pub_dec(RSA_METHOD *rsa,
                         int (*pub_dec) (int flen, const unsigned char *from,
                                         unsigned char *to, RSA *rsa,
                                         int padding));
int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_priv_enc(RSA_METHOD *rsa,
                          int (*priv_enc) (int flen, const unsigned char *from,
                                           unsigned char *to, RSA *rsa,
                                           int padding));
int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
    (int flen, const unsigned char *from,
     unsigned char *to, RSA *rsa, int padding);
int RSA_meth_set_priv_dec(RSA_METHOD *rsa,
                          int (*priv_dec) (int flen, const unsigned char *from,
                                           unsigned char *to, RSA *rsa,
                                           int padding));
int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
    (BIGNUM *r0, const BIGNUM *i, RSA *rsa, BN_CTX *ctx);
int RSA_meth_set_mod_exp(RSA_METHOD *rsa,
                         int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa,
                                         BN_CTX *ctx));
int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
    (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
     const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
int RSA_meth_set_bn_mod_exp(RSA_METHOD *rsa,
                            int (*bn_mod_exp) (BIGNUM *r,
                                               const BIGNUM *a,
                                               const BIGNUM *p,
                                               const BIGNUM *m,
                                               BN_CTX *ctx,
                                               BN_MONT_CTX *m_ctx));
int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa);
int RSA_meth_set_init(RSA_METHOD *rsa, int (*init) (RSA *rsa));
int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa);
int RSA_meth_set_finish(RSA_METHOD *rsa, int (*finish) (RSA *rsa));
int (*RSA_meth_get_sign(const RSA_METHOD *meth))
    (int type,
     const unsigned char *m, unsigned int m_length,
     unsigned char *sigret, unsigned int *siglen,
     const RSA *rsa);
int RSA_meth_set_sign(RSA_METHOD *rsa,
                      int (*sign) (int type, const unsigned char *m,
                                   unsigned int m_length,
                                   unsigned char *sigret, unsigned int *siglen,
                                   const RSA *rsa));
int (*RSA_meth_get_verify(const RSA_METHOD *meth))
    (int dtype, const unsigned char *m,
     unsigned int m_length, const unsigned char *sigbuf,
     unsigned int siglen, const RSA *rsa);
int RSA_meth_set_verify(RSA_METHOD *rsa,
                        int (*verify) (int dtype, const unsigned char *m,
                                       unsigned int m_length,
                                       const unsigned char *sigbuf,
                                       unsigned int siglen, const RSA *rsa));
int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
    (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
int RSA_meth_set_keygen(RSA_METHOD *rsa,
                        int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
                                       BN_GENCB *cb));
int (*RSA_meth_get_multi_prime_keygen(const RSA_METHOD *meth))
    (RSA *rsa, int bits, int primes, BIGNUM *e, BN_GENCB *cb);
int RSA_meth_set_multi_prime_keygen(RSA_METHOD *meth,
                                    int (*keygen) (RSA *rsa, int bits,
                                                   int primes, BIGNUM *e,
                                                   BN_GENCB *cb));

#  ifdef  __cplusplus
}
#  endif
# endif
#endif

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