104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* ecdsa.h
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Copyright (C) 2013 Niels Möller
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This file is part of GNU Nettle.
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GNU Nettle is free software: you can redistribute it and/or
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modify it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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or both in parallel, as here.
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GNU Nettle is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see http://www.gnu.org/licenses/.
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*/
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/* Development of Nettle's ECC support was funded by the .SE Internet Fund. */
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#ifndef NETTLE_ECDSA_H_INCLUDED
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#define NETTLE_ECDSA_H_INCLUDED
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#include "ecc.h"
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#include "dsa.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Name mangling */
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#define ecdsa_sign nettle_ecdsa_sign
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#define ecdsa_verify nettle_ecdsa_verify
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#define ecdsa_generate_keypair nettle_ecdsa_generate_keypair
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#define ecc_ecdsa_sign nettle_ecc_ecdsa_sign
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#define ecc_ecdsa_sign_itch nettle_ecc_ecdsa_sign_itch
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#define ecc_ecdsa_verify nettle_ecc_ecdsa_verify
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#define ecc_ecdsa_verify_itch nettle_ecc_ecdsa_verify_itch
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/* High level ECDSA functions.
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*
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* A public key is represented as a struct ecc_point, and a private
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* key as a struct ecc_scalar. FIXME: Introduce some aliases? */
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void
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ecdsa_sign (const struct ecc_scalar *key,
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void *random_ctx, nettle_random_func *random,
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size_t digest_length,
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const uint8_t *digest,
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struct dsa_signature *signature);
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int
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ecdsa_verify (const struct ecc_point *pub,
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size_t length, const uint8_t *digest,
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const struct dsa_signature *signature);
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void
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ecdsa_generate_keypair (struct ecc_point *pub,
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struct ecc_scalar *key,
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void *random_ctx, nettle_random_func *random);
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/* Low-level ECDSA functions. */
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mp_size_t
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ecc_ecdsa_sign_itch (const struct ecc_curve *ecc);
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void
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ecc_ecdsa_sign (const struct ecc_curve *ecc,
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const mp_limb_t *zp,
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/* Random nonce, must be invertible mod ecc group
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order. */
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const mp_limb_t *kp,
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size_t length, const uint8_t *digest,
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mp_limb_t *rp, mp_limb_t *sp,
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mp_limb_t *scratch);
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mp_size_t
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ecc_ecdsa_verify_itch (const struct ecc_curve *ecc);
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int
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ecc_ecdsa_verify (const struct ecc_curve *ecc,
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const mp_limb_t *pp, /* Public key */
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size_t length, const uint8_t *digest,
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const mp_limb_t *rp, const mp_limb_t *sp,
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mp_limb_t *scratch);
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#ifdef __cplusplus
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}
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#endif
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#endif /* NETTLE_ECDSA_H_INCLUDED */
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