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Diffstat (limited to 'libressl/include/openssl/ecdsa.h')
| -rw-r--r-- | libressl/include/openssl/ecdsa.h | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/libressl/include/openssl/ecdsa.h b/libressl/include/openssl/ecdsa.h new file mode 100644 index 00000000..530ab265 --- /dev/null +++ b/libressl/include/openssl/ecdsa.h @@ -0,0 +1,286 @@ +/* $OpenBSD: ecdsa.h,v 1.4 2015/02/08 13:35:06 jsing Exp $ */ +/** + * \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 ECDSA_SIG; + +struct ecdsa_method { + const char *name; + ECDSA_SIG *(*ecdsa_do_sign)(const unsigned char *dgst, int dgst_len, + const BIGNUM *inv, const BIGNUM *rp, EC_KEY *eckey); + int (*ecdsa_sign_setup)(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, + BIGNUM **r); + int (*ecdsa_do_verify)(const unsigned char *dgst, int dgst_len, + const ECDSA_SIG *sig, EC_KEY *eckey); +#if 0 + int (*init)(EC_KEY *eckey); + int (*finish)(EC_KEY *eckey); +#endif + int flags; + char *app_data; +}; + +/* If this flag is set the ECDSA 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 ECDSA_FLAG_FIPS_METHOD 0x1 + +struct ECDSA_SIG_st { + BIGNUM *r; + BIGNUM *s; +}; + +/** 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 |