diff options
Diffstat (limited to 'thirdparty/mbedtls/include/mbedtls/ecdsa.h')
| -rw-r--r-- | thirdparty/mbedtls/include/mbedtls/ecdsa.h | 97 |
1 files changed, 47 insertions, 50 deletions
diff --git a/thirdparty/mbedtls/include/mbedtls/ecdsa.h b/thirdparty/mbedtls/include/mbedtls/ecdsa.h index da02b27864..264a638bb5 100644 --- a/thirdparty/mbedtls/include/mbedtls/ecdsa.h +++ b/thirdparty/mbedtls/include/mbedtls/ecdsa.h @@ -12,13 +12,7 @@ */ /* * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - * - * This file is provided under the Apache License 2.0, or the - * GNU General Public License v2.0 or later. - * - * ********** - * Apache License 2.0: + * 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. @@ -31,60 +25,44 @@ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. - * - * ********** - * - * ********** - * GNU General Public License v2.0 or later: - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * ********** */ #ifndef MBEDTLS_ECDSA_H #define MBEDTLS_ECDSA_H #if !defined(MBEDTLS_CONFIG_FILE) -#include "config.h" +#include "mbedtls/config.h" #else #include MBEDTLS_CONFIG_FILE #endif -#include "ecp.h" -#include "md.h" +#include "mbedtls/ecp.h" +#include "mbedtls/md.h" -/* - * RFC-4492 page 20: +/** + * \brief Maximum ECDSA signature size for a given curve bit size * + * \param bits Curve size in bits + * \return Maximum signature size in bytes + * + * \note This macro returns a compile-time constant if its argument + * is one. It may evaluate its argument multiple times. + */ +/* * 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) + * For each of r and s, the value (V) may include an extra initial "0" bit. */ -#if MBEDTLS_ECP_MAX_BYTES > 124 -#error "MBEDTLS_ECP_MAX_BYTES bigger than expected, please fix MBEDTLS_ECDSA_MAX_LEN" -#endif +#define MBEDTLS_ECDSA_MAX_SIG_LEN( bits ) \ + ( /*T,L of SEQUENCE*/ ( ( bits ) >= 61 * 8 ? 3 : 2 ) + \ + /*T,L of r,s*/ 2 * ( ( ( bits ) >= 127 * 8 ? 3 : 2 ) + \ + /*V of r,s*/ ( ( bits ) + 8 ) / 8 ) ) + /** The maximal size of an ECDSA signature in Bytes. */ -#define MBEDTLS_ECDSA_MAX_LEN ( 3 + 2 * ( 3 + MBEDTLS_ECP_MAX_BYTES ) ) +#define MBEDTLS_ECDSA_MAX_LEN MBEDTLS_ECDSA_MAX_SIG_LEN( MBEDTLS_ECP_MAX_BITS ) #ifdef __cplusplus extern "C" { @@ -146,6 +124,16 @@ typedef void mbedtls_ecdsa_restart_ctx; #endif /* MBEDTLS_ECP_RESTARTABLE */ /** + * \brief This function checks whether a given group can be used + * for ECDSA. + * + * \param gid The ECP group ID to check. + * + * \return \c 1 if the group can be used, \c 0 otherwise + */ +int mbedtls_ecdsa_can_do( mbedtls_ecp_group_id gid ); + +/** * \brief This function computes the ECDSA signature of a * previously-hashed message. * @@ -186,6 +174,12 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, 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 This function computes the ECDSA signature of a * previously-hashed message, deterministic version. @@ -237,7 +231,10 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, 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 ); + mbedtls_md_type_t md_alg ) MBEDTLS_DEPRECATED; +#undef MBEDTLS_DEPRECATED +#endif /* MBEDTLS_DEPRECATED_REMOVED */ + /** * \brief This function computes the ECDSA signature of a * previously-hashed message, deterministic version. @@ -278,12 +275,11 @@ int mbedtls_ecdsa_sign_det( mbedtls_ecp_group *grp, mbedtls_mpi *r, * error code on failure. */ int mbedtls_ecdsa_sign_det_ext( 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, - int (*f_rng_blind)(void *, unsigned char *, - size_t), - void *p_rng_blind ); + mbedtls_mpi *s, const mbedtls_mpi *d, + const unsigned char *buf, size_t blen, + mbedtls_md_type_t md_alg, + int (*f_rng_blind)(void *, unsigned char *, size_t), + void *p_rng_blind ); #endif /* MBEDTLS_ECDSA_DETERMINISTIC */ /** @@ -362,7 +358,8 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp, * the signature written. Must not be \c NULL. * \param f_rng The RNG function. This must not be \c NULL if * #MBEDTLS_ECDSA_DETERMINISTIC is unset. Otherwise, - * it is unused and may be set to \c NULL. + * it is used only for blinding and may be set to \c NULL, but + * doing so is DEPRECATED. * \param p_rng The RNG context to be passed to \p f_rng. This may be * \c NULL if \p f_rng is \c NULL or doesn't use a context. * |