+++ /dev/null
-/**
- * \file ecdsa.h
- *
- * \brief Elliptic curve DSA
- *
- * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * This file is part of mbed TLS (https://tls.mbed.org)
- */
-#ifndef MBEDTLS_ECDSA_H
-#define MBEDTLS_ECDSA_H
-
-#include "ecp.h"
-#include "md.h"
-
-/*
- * RFC 4492 page 20:
- *
- * Ecdsa-Sig-Value ::= SEQUENCE {
- * r INTEGER,
- * s INTEGER
- * }
- *
- * Size is at most
- * 1 (tag) + 1 (len) + 1 (initial 0) + ECP_MAX_BYTES for each of r and s,
- * twice that + 1 (tag) + 2 (len) for the sequence
- * (assuming ECP_MAX_BYTES is less than 126 for r and s,
- * and less than 124 (total len <= 255) for the sequence)
- */
-#if MBEDTLS_ECP_MAX_BYTES > 124
-#error "MBEDTLS_ECP_MAX_BYTES bigger than expected, please fix MBEDTLS_ECDSA_MAX_LEN"
-#endif
-/** Maximum size of an ECDSA signature in bytes */
-#define MBEDTLS_ECDSA_MAX_LEN ( 3 + 2 * ( 3 + MBEDTLS_ECP_MAX_BYTES ) )
-
-/**
- * \brief ECDSA context structure
- */
-typedef mbedtls_ecp_keypair mbedtls_ecdsa_context;
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * \brief Compute ECDSA signature of a previously hashed message
- *
- * \note The deterministic version is usually prefered.
- *
- * \param grp ECP group
- * \param r First output integer
- * \param s Second output integer
- * \param d Private signing key
- * \param buf Message hash
- * \param blen Length of buf
- * \param f_rng RNG function
- * \param p_rng RNG parameter
- *
- * \return 0 if successful,
- * or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
- */
-int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
- const mbedtls_mpi *d, const unsigned char *buf, size_t blen,
- int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
-
-#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
-/**
- * \brief Compute ECDSA signature of a previously hashed message,
- * deterministic version (RFC 6979).
- *
- * \param grp ECP group
- * \param r First output integer
- * \param s Second output integer
- * \param d Private signing key
- * \param buf Message hash
- * \param blen Length of buf
- * \param md_alg MD algorithm used to hash the message
- *
- * \return 0 if successful,
- * or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
- */
-int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
- const mbedtls_mpi *d, const unsigned char *buf, size_t blen,
- mbedtls_md_type_t md_alg );
-#endif /* MBEDTLS_ECDSA_DETERMINISTIC */
-
-/**
- * \brief Verify ECDSA signature of a previously hashed message
- *
- * \param grp ECP group
- * \param buf Message hash
- * \param blen Length of buf
- * \param Q Public key to use for verification
- * \param r First integer of the signature
- * \param s Second integer of the signature
- *
- * \return 0 if successful,
- * MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid
- * or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
- */
-int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp,
- const unsigned char *buf, size_t blen,
- const mbedtls_ecp_point *Q, const mbedtls_mpi *r, const mbedtls_mpi *s);
-
-/**
- * \brief Compute ECDSA signature and write it to buffer,
- * serialized as defined in RFC 4492 page 20.
- * (Not thread-safe to use same context in multiple threads)
- *
- * \note The deterministice version (RFC 6979) is used if
- * MBEDTLS_ECDSA_DETERMINISTIC is defined.
- *
- * \param ctx ECDSA context
- * \param md_alg Algorithm that was used to hash the message
- * \param hash Message hash
- * \param hlen Length of hash
- * \param sig Buffer that will hold the signature
- * \param slen Length of the signature written
- * \param f_rng RNG function
- * \param p_rng RNG parameter
- *
- * \note The "sig" buffer must be at least as large as twice the
- * size of the curve used, plus 9 (eg. 73 bytes if a 256-bit
- * curve is used). MBEDTLS_ECDSA_MAX_LEN is always safe.
- *
- * \return 0 if successful,
- * or a MBEDTLS_ERR_ECP_XXX, MBEDTLS_ERR_MPI_XXX or
- * MBEDTLS_ERR_ASN1_XXX error code
- */
-int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx, mbedtls_md_type_t md_alg,
- const unsigned char *hash, size_t hlen,
- unsigned char *sig, size_t *slen,
- int (*f_rng)(void *, unsigned char *, size_t),
- void *p_rng );
-
-#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
-#if ! defined(MBEDTLS_DEPRECATED_REMOVED)
-#if defined(MBEDTLS_DEPRECATED_WARNING)
-#define MBEDTLS_DEPRECATED __attribute__((deprecated))
-#else
-#define MBEDTLS_DEPRECATED
-#endif
-/**
- * \brief Compute ECDSA signature and write it to buffer,
- * serialized as defined in RFC 4492 page 20.
- * Deterministic version, RFC 6979.
- * (Not thread-safe to use same context in multiple threads)
- *
- * \deprecated Superseded by mbedtls_ecdsa_write_signature() in 2.0.0
- *
- * \param ctx ECDSA context
- * \param hash Message hash
- * \param hlen Length of hash
- * \param sig Buffer that will hold the signature
- * \param slen Length of the signature written
- * \param md_alg MD algorithm used to hash the message
- *
- * \note The "sig" buffer must be at least as large as twice the
- * size of the curve used, plus 9 (eg. 73 bytes if a 256-bit
- * curve is used). MBEDTLS_ECDSA_MAX_LEN is always safe.
- *
- * \return 0 if successful,
- * or a MBEDTLS_ERR_ECP_XXX, MBEDTLS_ERR_MPI_XXX or
- * MBEDTLS_ERR_ASN1_XXX error code
- */
-int mbedtls_ecdsa_write_signature_det( mbedtls_ecdsa_context *ctx,
- const unsigned char *hash, size_t hlen,
- unsigned char *sig, size_t *slen,
- mbedtls_md_type_t md_alg ) MBEDTLS_DEPRECATED;
-#undef MBEDTLS_DEPRECATED
-#endif /* MBEDTLS_DEPRECATED_REMOVED */
-#endif /* MBEDTLS_ECDSA_DETERMINISTIC */
-
-/**
- * \brief Read and verify an ECDSA signature
- *
- * \param ctx ECDSA context
- * \param hash Message hash
- * \param hlen Size of hash
- * \param sig Signature to read and verify
- * \param slen Size of sig
- *
- * \return 0 if successful,
- * MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid,
- * MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH if the signature is
- * valid but its actual length is less than siglen,
- * or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_ERR_MPI_XXX error code
- */
-int mbedtls_ecdsa_read_signature( mbedtls_ecdsa_context *ctx,
- const unsigned char *hash, size_t hlen,
- const unsigned char *sig, size_t slen );
-
-/**
- * \brief Generate an ECDSA keypair on the given curve
- *
- * \param ctx ECDSA context in which the keypair should be stored
- * \param gid Group (elliptic curve) to use. One of the various
- * MBEDTLS_ECP_DP_XXX macros depending on configuration.
- * \param f_rng RNG function
- * \param p_rng RNG parameter
- *
- * \return 0 on success, or a MBEDTLS_ERR_ECP_XXX code.
- */
-int mbedtls_ecdsa_genkey( mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid,
- int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
-
-/**
- * \brief Set an ECDSA context from an EC key pair
- *
- * \param ctx ECDSA context to set
- * \param key EC key to use
- *
- * \return 0 on success, or a MBEDTLS_ERR_ECP_XXX code.
- */
-int mbedtls_ecdsa_from_keypair( mbedtls_ecdsa_context *ctx, const mbedtls_ecp_keypair *key );
-
-/**
- * \brief Initialize context
- *
- * \param ctx Context to initialize
- */
-void mbedtls_ecdsa_init( mbedtls_ecdsa_context *ctx );
-
-/**
- * \brief Free context
- *
- * \param ctx Context to free
- */
-void mbedtls_ecdsa_free( mbedtls_ecdsa_context *ctx );
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ecdsa.h */
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