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Diffstat (limited to 'include/libecc/sig/eckcdsa.h')
| -rw-r--r-- | include/libecc/sig/eckcdsa.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/include/libecc/sig/eckcdsa.h b/include/libecc/sig/eckcdsa.h new file mode 100644 index 000000000000..cafd8dd99671 --- /dev/null +++ b/include/libecc/sig/eckcdsa.h @@ -0,0 +1,84 @@ +/* + * Copyright (C) 2017 - This file is part of libecc project + * + * Authors: + * Ryad BENADJILA <ryadbenadjila@gmail.com> + * Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr> + * Jean-Pierre FLORI <jean-pierre.flori@ssi.gouv.fr> + * + * Contributors: + * Nicolas VIVET <nicolas.vivet@ssi.gouv.fr> + * Karim KHALFALLAH <karim.khalfallah@ssi.gouv.fr> + * + * This software is licensed under a dual BSD and GPL v2 license. + * See LICENSE file at the root folder of the project. + */ +#include <libecc/lib_ecc_config.h> +#include <libecc/lib_ecc_types.h> +#ifdef WITH_SIG_ECKCDSA + +#ifndef __ECKCDSA_H__ +#define __ECKCDSA_H__ +#include <libecc/words/words.h> +#include <libecc/sig/ec_key.h> +#include <libecc/utils/utils.h> +#include <libecc/hash/hash_algs.h> +#include <libecc/curves/curves.h> + +#define ECKCDSA_R_LEN(hsize, q_bit_len) LOCAL_MIN(hsize, BYTECEIL(q_bit_len)) +#define ECKCDSA_S_LEN(q_bit_len) (BYTECEIL(q_bit_len)) +#define ECKCDSA_SIGLEN(hsize, q_bit_len) (ECKCDSA_R_LEN(hsize, q_bit_len) + \ + ECKCDSA_S_LEN(q_bit_len)) +#define ECKCDSA_MAX_SIGLEN ECKCDSA_SIGLEN(MAX_DIGEST_SIZE, CURVES_MAX_Q_BIT_LEN) + +/* + * Compute max signature length for all the mechanisms enabled + * in the library (see lib_ecc_config.h). Having that done during + * preprocessing sadly requires some verbosity. + */ +#ifndef EC_MAX_SIGLEN +#define EC_MAX_SIGLEN 0 +#endif +#if ((EC_MAX_SIGLEN) < (ECKCDSA_MAX_SIGLEN)) +#undef EC_MAX_SIGLEN +#define EC_MAX_SIGLEN ECKCDSA_MAX_SIGLEN +#endif + +ATTRIBUTE_WARN_UNUSED_RET int eckcdsa_init_pub_key(ec_pub_key *out_pub, const ec_priv_key *in_priv); + +ATTRIBUTE_WARN_UNUSED_RET int eckcdsa_siglen(u16 p_bit_len, u16 q_bit_len, u8 hsize, u8 blocksize, + u8 *siglen); + +typedef struct { + hash_context h_ctx; + word_t magic; +} eckcdsa_sign_data; + +struct ec_sign_context; + +ATTRIBUTE_WARN_UNUSED_RET int _eckcdsa_sign_init(struct ec_sign_context *ctx); + +ATTRIBUTE_WARN_UNUSED_RET int _eckcdsa_sign_update(struct ec_sign_context *ctx, + const u8 *chunk, u32 chunklen); + +ATTRIBUTE_WARN_UNUSED_RET int _eckcdsa_sign_finalize(struct ec_sign_context *ctx, u8 *sig, u8 siglen); + +typedef struct { + hash_context h_ctx; + u8 r[MAX_DIGEST_SIZE]; + nn s; + word_t magic; +} eckcdsa_verify_data; + +struct ec_verify_context; + +ATTRIBUTE_WARN_UNUSED_RET int _eckcdsa_verify_init(struct ec_verify_context *ctx, + const u8 *sig, u8 siglen); + +ATTRIBUTE_WARN_UNUSED_RET int _eckcdsa_verify_update(struct ec_verify_context *ctx, + const u8 *chunk, u32 chunklen); + +ATTRIBUTE_WARN_UNUSED_RET int _eckcdsa_verify_finalize(struct ec_verify_context *ctx); + +#endif /* __ECKCDSA_H__ */ +#endif /* WITH_SIG_ECKCDSA */ |