47e42b3c67
Split PSS parameter creation. This adds a new function rsa_pss_params_create which creates PSS parameters from digest and salt values. This will be used for PSS key generation. Reviewed-by: Rich Salz <rsalz@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2177)
102 lines
3.8 KiB
C
102 lines
3.8 KiB
C
/*
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* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/rsa.h>
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#include "internal/refcount.h"
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struct rsa_st {
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/*
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* The first parameter is used to pickup errors where this is passed
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* instead of aEVP_PKEY, it is set to 0
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*/
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int pad;
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long version;
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const RSA_METHOD *meth;
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/* functional reference if 'meth' is ENGINE-provided */
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ENGINE *engine;
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BIGNUM *n;
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BIGNUM *e;
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BIGNUM *d;
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BIGNUM *p;
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BIGNUM *q;
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BIGNUM *dmp1;
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BIGNUM *dmq1;
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BIGNUM *iqmp;
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/* If a PSS only key this contains the parameter restrictions */
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RSA_PSS_PARAMS *pss;
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/* be careful using this if the RSA structure is shared */
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CRYPTO_EX_DATA ex_data;
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CRYPTO_REF_COUNT references;
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int flags;
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/* Used to cache montgomery values */
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BN_MONT_CTX *_method_mod_n;
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BN_MONT_CTX *_method_mod_p;
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BN_MONT_CTX *_method_mod_q;
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/*
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* all BIGNUM values are actually in the following data, if it is not
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* NULL
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*/
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char *bignum_data;
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BN_BLINDING *blinding;
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BN_BLINDING *mt_blinding;
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CRYPTO_RWLOCK *lock;
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};
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struct rsa_meth_st {
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char *name;
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int (*rsa_pub_enc) (int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding);
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int (*rsa_pub_dec) (int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding);
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int (*rsa_priv_enc) (int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding);
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int (*rsa_priv_dec) (int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding);
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/* Can be null */
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int (*rsa_mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
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/* Can be null */
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int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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/* called at new */
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int (*init) (RSA *rsa);
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/* called at free */
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int (*finish) (RSA *rsa);
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/* RSA_METHOD_FLAG_* things */
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int flags;
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/* may be needed! */
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char *app_data;
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/*
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* New sign and verify functions: some libraries don't allow arbitrary
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* data to be signed/verified: this allows them to be used. Note: for
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* this to work the RSA_public_decrypt() and RSA_private_encrypt() should
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* *NOT* be used RSA_sign(), RSA_verify() should be used instead.
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*/
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int (*rsa_sign) (int type,
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const unsigned char *m, unsigned int m_length,
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unsigned char *sigret, unsigned int *siglen,
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const RSA *rsa);
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int (*rsa_verify) (int dtype, const unsigned char *m,
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unsigned int m_length, const unsigned char *sigbuf,
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unsigned int siglen, const RSA *rsa);
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/*
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* If this callback is NULL, the builtin software RSA key-gen will be
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* used. This is for behavioural compatibility whilst the code gets
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* rewired, but one day it would be nice to assume there are no such
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* things as "builtin software" implementations.
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*/
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int (*rsa_keygen) (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb);
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};
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extern int int_rsa_verify(int dtype, const unsigned char *m,
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unsigned int m_len, unsigned char *rm,
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size_t *prm_len, const unsigned char *sigbuf,
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size_t siglen, RSA *rsa);
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RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd,
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const EVP_MD *mgf1md, int saltlen);
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