150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/* eddsa.h
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Copyright (C) 2014 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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#ifndef NETTLE_EDDSA_H
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#define NETTLE_EDDSA_H
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#include "nettle-types.h"
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#include "bignum.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 ed25519_sha512_set_private_key nettle_ed25519_sha512_set_private_key
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#define ed25519_sha512_public_key nettle_ed25519_sha512_public_key
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#define ed25519_sha512_sign nettle_ed25519_sha512_sign
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#define ed25519_sha512_verify nettle_ed25519_sha512_verify
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#define _eddsa_compress _nettle_eddsa_compress
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#define _eddsa_compress_itch _nettle_eddsa_compress_itch
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#define _eddsa_decompress _nettle_eddsa_decompress
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#define _eddsa_decompress_itch _nettle_eddsa_decompress_itch
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#define _eddsa_hash _nettle_eddsa_hash
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#define _eddsa_expand_key _nettle_eddsa_expand_key
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#define _eddsa_sign _nettle_eddsa_sign
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#define _eddsa_sign_itch _nettle_eddsa_sign_itch
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#define _eddsa_verify _nettle_eddsa_verify
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#define _eddsa_verify_itch _nettle_eddsa_verify_itch
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#define _eddsa_public_key_itch _nettle_eddsa_public_key_itch
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#define _eddsa_public_key _nettle_eddsa_public_key
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#define ED25519_KEY_SIZE 32
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#define ED25519_SIGNATURE_SIZE 64
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void
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ed25519_sha512_public_key (uint8_t *pub, const uint8_t *priv);
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void
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ed25519_sha512_sign (const uint8_t *pub,
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const uint8_t *priv,
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size_t length, const uint8_t *msg,
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uint8_t *signature);
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int
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ed25519_sha512_verify (const uint8_t *pub,
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size_t length, const uint8_t *msg,
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const uint8_t *signature);
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/* Low-level internal functions */
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struct ecc_curve;
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struct ecc_modulo;
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mp_size_t
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_eddsa_compress_itch (const struct ecc_curve *ecc);
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void
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_eddsa_compress (const struct ecc_curve *ecc, uint8_t *r, mp_limb_t *p,
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mp_limb_t *scratch);
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mp_size_t
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_eddsa_decompress_itch (const struct ecc_curve *ecc);
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int
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_eddsa_decompress (const struct ecc_curve *ecc, mp_limb_t *p,
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const uint8_t *cp,
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mp_limb_t *scratch);
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void
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_eddsa_hash (const struct ecc_modulo *m,
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mp_limb_t *rp, const uint8_t *digest);
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mp_size_t
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_eddsa_sign_itch (const struct ecc_curve *ecc);
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void
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_eddsa_sign (const struct ecc_curve *ecc,
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const struct nettle_hash *H,
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const uint8_t *pub,
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void *ctx,
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const mp_limb_t *k2,
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size_t length,
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const uint8_t *msg,
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uint8_t *signature,
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mp_limb_t *scratch);
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mp_size_t
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_eddsa_verify_itch (const struct ecc_curve *ecc);
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int
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_eddsa_verify (const struct ecc_curve *ecc,
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const struct nettle_hash *H,
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const uint8_t *pub,
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const mp_limb_t *A,
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void *ctx,
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size_t length,
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const uint8_t *msg,
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const uint8_t *signature,
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mp_limb_t *scratch);
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void
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_eddsa_expand_key (const struct ecc_curve *ecc,
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const struct nettle_hash *H,
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void *ctx,
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const uint8_t *key,
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uint8_t *digest,
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mp_limb_t *k2);
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mp_size_t
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_eddsa_public_key_itch (const struct ecc_curve *ecc);
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void
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_eddsa_public_key (const struct ecc_curve *ecc,
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const mp_limb_t *k, uint8_t *pub, 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_EDDSA_H */
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