/src/libgcrypt/cipher/sntrup761.h

Source (jump to first uncovered line)
/* sntrup761.h  -  Streamlined NTRU Prime sntrup761 key-encapsulation method
 * Copyright (C) 2023 Simon Josefsson <simon@josefsson.org>
 *
 * This file is part of Libgcrypt.
 *
 * Libgcrypt is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * Libgcrypt is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, see <https://www.gnu.org/licenses/>.
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * For a description of the algorithm, see:
 *   https://ntruprime.cr.yp.to/
 */

/*
 * Derived from public domain source, written by (in alphabetical order):
 * - Daniel J. Bernstein
 * - Chitchanok Chuengsatiansup
 * - Tanja Lange
 * - Christine van Vredendaal
 */

#ifndef SNTRUP761_H
#define SNTRUP761_H

#include <string.h>
#include <stdint.h>

#ifdef _GCRYPT_IN_LIBGCRYPT
/**** Start of the glue code to libgcrypt ****/
#include "gcrypt-int.h"

static inline void
crypto_hash_sha512 (unsigned char *out,
        const unsigned char *in, size_t inlen)
{
  _gcry_md_hash_buffer (GCRY_MD_SHA512, out, in, inlen);
}

#define sntrup761_keypair _gcry_sntrup761_keypair
#define sntrup761_enc     _gcry_sntrup761_enc
#define sntrup761_dec     _gcry_sntrup761_dec
/**** End of the glue code ****/
#else
#define SNTRUP761_SECRETKEY_SIZE 1763
#define SNTRUP761_PUBLICKEY_SIZE 1158
#define SNTRUP761_CIPHERTEXT_SIZE 1039
#define SNTRUP761_SIZE 32
#endif

typedef void sntrup761_random_func (void *ctx, size_t length, uint8_t *dst);

void
sntrup761_keypair (uint8_t *pk, uint8_t *sk,
       void *random_ctx, sntrup761_random_func *random);

void
sntrup761_enc (uint8_t *c, uint8_t *k, const uint8_t *pk,
         void *random_ctx, sntrup761_random_func *random);

void
sntrup761_dec (uint8_t *k, const uint8_t *c, const uint8_t *sk);

#endif /* SNTRUP761_H */

Coverage Report

Created: 2024-11-21 07:03

Line	Count	Source (jump to first uncovered line)
1		/* sntrup761.h - Streamlined NTRU Prime sntrup761 key-encapsulation method
2		* Copyright (C) 2023 Simon Josefsson <simon@josefsson.org>
3		*
4		* This file is part of Libgcrypt.
5		*
6		* Libgcrypt is free software; you can redistribute it and/or modify
7		* it under the terms of the GNU Lesser General Public License as
8		* published by the Free Software Foundation; either version 2.1 of
9		* the License, or (at your option) any later version.
10		*
11		* Libgcrypt is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14		* GNU Lesser General Public License for more details.
15		*
16		* You should have received a copy of the GNU Lesser General Public
17		* License along with this program; if not, see <https://www.gnu.org/licenses/>.
18		* SPDX-License-Identifier: LGPL-2.1-or-later
19		*
20		* For a description of the algorithm, see:
21		* https://ntruprime.cr.yp.to/
22		*/
23
24		/*
25		* Derived from public domain source, written by (in alphabetical order):
26		* - Daniel J. Bernstein
27		* - Chitchanok Chuengsatiansup
28		* - Tanja Lange
29		* - Christine van Vredendaal
30		*/
31
32		#ifndef SNTRUP761_H
33		#define SNTRUP761_H
34
35		#include <string.h>
36		#include <stdint.h>
37
38		#ifdef _GCRYPT_IN_LIBGCRYPT
39		/** Start of the glue code to libgcrypt **/
40		#include "gcrypt-int.h"
41
42		static inline void
43		crypto_hash_sha512 (unsigned char *out,
44		const unsigned char *in, size_t inlen)
45	0	{
46	0	_gcry_md_hash_buffer (GCRY_MD_SHA512, out, in, inlen);
47	0	} Unexecuted instantiation: kem.c:crypto_hash_sha512 Unexecuted instantiation: sntrup761.c:crypto_hash_sha512
48
49	0	#define sntrup761_keypair _gcry_sntrup761_keypair
50	0	#define sntrup761_enc _gcry_sntrup761_enc
51	0	#define sntrup761_dec _gcry_sntrup761_dec
52		/** End of the glue code **/
53		#else
54		#define SNTRUP761_SECRETKEY_SIZE 1763
55		#define SNTRUP761_PUBLICKEY_SIZE 1158
56		#define SNTRUP761_CIPHERTEXT_SIZE 1039
57		#define SNTRUP761_SIZE 32
58		#endif
59
60		typedef void sntrup761_random_func (void ctx, size_t length, uint8_t dst);
61
62		void
63		sntrup761_keypair (uint8_t pk, uint8_t sk,
64		void random_ctx, sntrup761_random_func random);
65
66		void
67		sntrup761_enc (uint8_t c, uint8_t k, const uint8_t *pk,
68		void random_ctx, sntrup761_random_func random);
69
70		void
71		sntrup761_dec (uint8_t k, const uint8_t c, const uint8_t *sk);
72
73		#endif /* SNTRUP761_H */