2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/rsa.h>
14 * The first parameter is used to pickup errors where this is passed
15 * instead of aEVP_PKEY, it is set to 0
19 const RSA_METHOD *meth;
20 /* functional reference if 'meth' is ENGINE-provided */
30 /* be careful using this if the RSA structure is shared */
31 CRYPTO_EX_DATA ex_data;
34 /* Used to cache montgomery values */
35 BN_MONT_CTX *_method_mod_n;
36 BN_MONT_CTX *_method_mod_p;
37 BN_MONT_CTX *_method_mod_q;
39 * all BIGNUM values are actually in the following data, if it is not
43 BN_BLINDING *blinding;
44 BN_BLINDING *mt_blinding;
50 int (*rsa_pub_enc) (int flen, const unsigned char *from,
51 unsigned char *to, RSA *rsa, int padding);
52 int (*rsa_pub_dec) (int flen, const unsigned char *from,
53 unsigned char *to, RSA *rsa, int padding);
54 int (*rsa_priv_enc) (int flen, const unsigned char *from,
55 unsigned char *to, RSA *rsa, int padding);
56 int (*rsa_priv_dec) (int flen, const unsigned char *from,
57 unsigned char *to, RSA *rsa, int padding);
59 int (*rsa_mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
61 int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
62 const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
64 int (*init) (RSA *rsa);
66 int (*finish) (RSA *rsa);
67 /* RSA_METHOD_FLAG_* things */
72 * New sign and verify functions: some libraries don't allow arbitrary
73 * data to be signed/verified: this allows them to be used. Note: for
74 * this to work the RSA_public_decrypt() and RSA_private_encrypt() should
75 * *NOT* be used RSA_sign(), RSA_verify() should be used instead.
77 int (*rsa_sign) (int type,
78 const unsigned char *m, unsigned int m_length,
79 unsigned char *sigret, unsigned int *siglen,
81 int (*rsa_verify) (int dtype, const unsigned char *m,
82 unsigned int m_length, const unsigned char *sigbuf,
83 unsigned int siglen, const RSA *rsa);
85 * If this callback is NULL, the builtin software RSA key-gen will be
86 * used. This is for behavioural compatibility whilst the code gets
87 * rewired, but one day it would be nice to assume there are no such
88 * things as "builtin software" implementations.
90 int (*rsa_keygen) (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
93 extern int int_rsa_verify(int dtype, const unsigned char *m,
94 unsigned int m_len, unsigned char *rm,
95 size_t *prm_len, const unsigned char *sigbuf,
96 size_t siglen, RSA *rsa);