3312af6e07
We currently use an old version of libgcrypt which results in us having fewer ciphers and missing on many other improvements. Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* sntrup761.h - Streamlined NTRU Prime sntrup761 key-encapsulation method
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* Copyright (C) 2023 Simon Josefsson <simon@josefsson.org>
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt 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
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <https://www.gnu.org/licenses/>.
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* For a description of the algorithm, see:
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* https://ntruprime.cr.yp.to/
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*/
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/*
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* Derived from public domain source, written by (in alphabetical order):
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* - Daniel J. Bernstein
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* - Chitchanok Chuengsatiansup
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* - Tanja Lange
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* - Christine van Vredendaal
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*/
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#ifndef SNTRUP761_H
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#define SNTRUP761_H
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#include <string.h>
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#include <stdint.h>
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#ifdef _GCRYPT_IN_LIBGCRYPT
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/**** Start of the glue code to libgcrypt ****/
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#include "gcrypt-int.h"
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static inline void
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crypto_hash_sha512 (unsigned char *out,
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const unsigned char *in, size_t inlen)
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{
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_gcry_md_hash_buffer (GCRY_MD_SHA512, out, in, inlen);
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}
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#define sntrup761_keypair _gcry_sntrup761_keypair
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#define sntrup761_enc _gcry_sntrup761_enc
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#define sntrup761_dec _gcry_sntrup761_dec
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/**** End of the glue code ****/
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#else
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#define SNTRUP761_SECRETKEY_SIZE 1763
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#define SNTRUP761_PUBLICKEY_SIZE 1158
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#define SNTRUP761_CIPHERTEXT_SIZE 1039
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#define SNTRUP761_SIZE 32
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#endif
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typedef void sntrup761_random_func (void *ctx, size_t length, uint8_t *dst);
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void
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sntrup761_keypair (uint8_t *pk, uint8_t *sk,
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void *random_ctx, sntrup761_random_func *random);
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void
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sntrup761_enc (uint8_t *c, uint8_t *k, const uint8_t *pk,
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void *random_ctx, sntrup761_random_func *random);
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void
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sntrup761_dec (uint8_t *k, const uint8_t *c, const uint8_t *sk);
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#endif /* SNTRUP761_H */
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