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61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* ed448-shake256.c
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Copyright (C) 2019 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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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "eddsa-internal.h"
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#include "nettle-types.h"
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#include "sha3.h"
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#define DOM_SIZE 10
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static nettle_eddsa_dom_func ed448_dom;
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static void
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ed448_dom(void *ctx)
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{
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static const uint8_t dom[DOM_SIZE] =
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{ 'S', 'i', 'g', 'E', 'd', '4', '4', '8', 0, 0};
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sha3_256_update (ctx, DOM_SIZE, dom);
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}
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const struct ecc_eddsa _nettle_ed448_shake256 =
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{
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(nettle_hash_update_func *) sha3_256_update,
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(nettle_hash_digest_func *) sha3_256_shake,
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ed448_dom,
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~(mp_limb_t) 3,
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(mp_limb_t) 1 << (447 % GMP_NUMB_BITS),
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};
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