261 lines
11 KiB
C
261 lines
11 KiB
C
/* crypto/ecdsa/ecdsa.h */
|
|
/**
|
|
* \file crypto/ecdsa/ecdsa.h Include file for the OpenSSL ECDSA functions
|
|
* \author Written by Nils Larsch for the OpenSSL project
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
#ifndef HEADER_ECDSA_H
|
|
# define HEADER_ECDSA_H
|
|
|
|
# include <openssl/opensslconf.h>
|
|
|
|
# ifdef OPENSSL_NO_ECDSA
|
|
# error ECDSA is disabled.
|
|
# endif
|
|
|
|
# include <openssl/ec.h>
|
|
# include <openssl/ossl_typ.h>
|
|
# ifndef OPENSSL_NO_DEPRECATED
|
|
# include <openssl/bn.h>
|
|
# endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct ECDSA_SIG_st {
|
|
BIGNUM *r;
|
|
BIGNUM *s;
|
|
} ECDSA_SIG;
|
|
|
|
/** Allocates and initialize a ECDSA_SIG structure
|
|
* \return pointer to a ECDSA_SIG structure or NULL if an error occurred
|
|
*/
|
|
ECDSA_SIG *ECDSA_SIG_new(void);
|
|
|
|
/** frees a ECDSA_SIG structure
|
|
* \param sig pointer to the ECDSA_SIG structure
|
|
*/
|
|
void ECDSA_SIG_free(ECDSA_SIG *sig);
|
|
|
|
/** DER encode content of ECDSA_SIG object (note: this function modifies *pp
|
|
* (*pp += length of the DER encoded signature)).
|
|
* \param sig pointer to the ECDSA_SIG object
|
|
* \param pp pointer to a unsigned char pointer for the output or NULL
|
|
* \return the length of the DER encoded ECDSA_SIG object or 0
|
|
*/
|
|
int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
|
|
|
|
/** Decodes a DER encoded ECDSA signature (note: this function changes *pp
|
|
* (*pp += len)).
|
|
* \param sig pointer to ECDSA_SIG pointer (may be NULL)
|
|
* \param pp memory buffer with the DER encoded signature
|
|
* \param len length of the buffer
|
|
* \return pointer to the decoded ECDSA_SIG structure (or NULL)
|
|
*/
|
|
ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
|
|
|
|
/** Computes the ECDSA signature of the given hash value using
|
|
* the supplied private key and returns the created signature.
|
|
* \param dgst pointer to the hash value
|
|
* \param dgst_len length of the hash value
|
|
* \param eckey EC_KEY object containing a private EC key
|
|
* \return pointer to a ECDSA_SIG structure or NULL if an error occurred
|
|
*/
|
|
ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dgst_len,
|
|
EC_KEY *eckey);
|
|
|
|
/** Computes ECDSA signature of a given hash value using the supplied
|
|
* private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
|
|
* \param dgst pointer to the hash value to sign
|
|
* \param dgstlen length of the hash value
|
|
* \param kinv BIGNUM with a pre-computed inverse k (optional)
|
|
* \param rp BIGNUM with a pre-computed rp value (optioanl),
|
|
* see ECDSA_sign_setup
|
|
* \param eckey EC_KEY object containing a private EC key
|
|
* \return pointer to a ECDSA_SIG structure or NULL if an error occurred
|
|
*/
|
|
ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dgstlen,
|
|
const BIGNUM *kinv, const BIGNUM *rp,
|
|
EC_KEY *eckey);
|
|
|
|
/** Verifies that the supplied signature is a valid ECDSA
|
|
* signature of the supplied hash value using the supplied public key.
|
|
* \param dgst pointer to the hash value
|
|
* \param dgst_len length of the hash value
|
|
* \param sig ECDSA_SIG structure
|
|
* \param eckey EC_KEY object containing a public EC key
|
|
* \return 1 if the signature is valid, 0 if the signature is invalid
|
|
* and -1 on error
|
|
*/
|
|
int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
|
|
const ECDSA_SIG *sig, EC_KEY *eckey);
|
|
|
|
const ECDSA_METHOD *ECDSA_OpenSSL(void);
|
|
|
|
/** Sets the default ECDSA method
|
|
* \param meth new default ECDSA_METHOD
|
|
*/
|
|
void ECDSA_set_default_method(const ECDSA_METHOD *meth);
|
|
|
|
/** Returns the default ECDSA method
|
|
* \return pointer to ECDSA_METHOD structure containing the default method
|
|
*/
|
|
const ECDSA_METHOD *ECDSA_get_default_method(void);
|
|
|
|
/** Sets method to be used for the ECDSA operations
|
|
* \param eckey EC_KEY object
|
|
* \param meth new method
|
|
* \return 1 on success and 0 otherwise
|
|
*/
|
|
int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth);
|
|
|
|
/** Returns the maximum length of the DER encoded signature
|
|
* \param eckey EC_KEY object
|
|
* \return numbers of bytes required for the DER encoded signature
|
|
*/
|
|
int ECDSA_size(const EC_KEY *eckey);
|
|
|
|
/** Precompute parts of the signing operation
|
|
* \param eckey EC_KEY object containing a private EC key
|
|
* \param ctx BN_CTX object (optional)
|
|
* \param kinv BIGNUM pointer for the inverse of k
|
|
* \param rp BIGNUM pointer for x coordinate of k * generator
|
|
* \return 1 on success and 0 otherwise
|
|
*/
|
|
int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **rp);
|
|
|
|
/** Computes ECDSA signature of a given hash value using the supplied
|
|
* private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
|
|
* \param type this parameter is ignored
|
|
* \param dgst pointer to the hash value to sign
|
|
* \param dgstlen length of the hash value
|
|
* \param sig memory for the DER encoded created signature
|
|
* \param siglen pointer to the length of the returned signature
|
|
* \param eckey EC_KEY object containing a private EC key
|
|
* \return 1 on success and 0 otherwise
|
|
*/
|
|
int ECDSA_sign(int type, const unsigned char *dgst, int dgstlen,
|
|
unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
|
|
|
|
/** Computes ECDSA signature of a given hash value using the supplied
|
|
* private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
|
|
* \param type this parameter is ignored
|
|
* \param dgst pointer to the hash value to sign
|
|
* \param dgstlen length of the hash value
|
|
* \param sig buffer to hold the DER encoded signature
|
|
* \param siglen pointer to the length of the returned signature
|
|
* \param kinv BIGNUM with a pre-computed inverse k (optional)
|
|
* \param rp BIGNUM with a pre-computed rp value (optioanl),
|
|
* see ECDSA_sign_setup
|
|
* \param eckey EC_KEY object containing a private EC key
|
|
* \return 1 on success and 0 otherwise
|
|
*/
|
|
int ECDSA_sign_ex(int type, const unsigned char *dgst, int dgstlen,
|
|
unsigned char *sig, unsigned int *siglen,
|
|
const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey);
|
|
|
|
/** Verifies that the given signature is valid ECDSA signature
|
|
* of the supplied hash value using the specified public key.
|
|
* \param type this parameter is ignored
|
|
* \param dgst pointer to the hash value
|
|
* \param dgstlen length of the hash value
|
|
* \param sig pointer to the DER encoded signature
|
|
* \param siglen length of the DER encoded signature
|
|
* \param eckey EC_KEY object containing a public EC key
|
|
* \return 1 if the signature is valid, 0 if the signature is invalid
|
|
* and -1 on error
|
|
*/
|
|
int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
|
|
const unsigned char *sig, int siglen, EC_KEY *eckey);
|
|
|
|
/* the standard ex_data functions */
|
|
int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new
|
|
*new_func, CRYPTO_EX_dup *dup_func,
|
|
CRYPTO_EX_free *free_func);
|
|
int ECDSA_set_ex_data(EC_KEY *d, int idx, void *arg);
|
|
void *ECDSA_get_ex_data(EC_KEY *d, int idx);
|
|
|
|
/* BEGIN ERROR CODES */
|
|
/*
|
|
* The following lines are auto generated by the script mkerr.pl. Any changes
|
|
* made after this point may be overwritten when the script is next run.
|
|
*/
|
|
void ERR_load_ECDSA_strings(void);
|
|
|
|
/* Error codes for the ECDSA functions. */
|
|
|
|
/* Function codes. */
|
|
# define ECDSA_F_ECDSA_CHECK 104
|
|
# define ECDSA_F_ECDSA_DATA_NEW_METHOD 100
|
|
# define ECDSA_F_ECDSA_DO_SIGN 101
|
|
# define ECDSA_F_ECDSA_DO_VERIFY 102
|
|
# define ECDSA_F_ECDSA_SIGN_SETUP 103
|
|
|
|
/* Reason codes. */
|
|
# define ECDSA_R_BAD_SIGNATURE 100
|
|
# define ECDSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 101
|
|
# define ECDSA_R_ERR_EC_LIB 102
|
|
# define ECDSA_R_MISSING_PARAMETERS 103
|
|
# define ECDSA_R_NEED_NEW_SETUP_VALUES 106
|
|
# define ECDSA_R_NON_FIPS_METHOD 107
|
|
# define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104
|
|
# define ECDSA_R_SIGNATURE_MALLOC_FAILED 105
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|