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sntrup761.h
/*
* This file is part of the SSH Library
*
* Copyright (c) 2013 by Aris Adamantiadis <aris@badcode.be>
* Copyright (c) 2023 Simon Josefsson <simon@josefsson.org>
* Copyright (c) 2025 Jakub Jelen <jjelen@redhat.com>
*
* This library 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,
* version 2.1 of the License.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef SNTRUP761_H_
#define SNTRUP761_H_
#include "config.h"
#include "curve25519.h"
#include "libssh.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HAVE_CURVE25519
#define HAVE_SNTRUP761 1
#endif
/*
* Derived from public domain source, written by (in alphabetical order):
* - Daniel J. Bernstein
* - Chitchanok Chuengsatiansup
* - Tanja Lange
* - Christine van Vredendaal
*/
#include <stdint.h>
#include <string.h>
#define SNTRUP761_SECRETKEY_SIZE 1763
#define SNTRUP761_PUBLICKEY_SIZE 1158
#define SNTRUP761_CIPHERTEXT_SIZE 1039
#define SNTRUP761_SIZE 32
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);
typedef unsigned char ssh_sntrup761_pubkey[SNTRUP761_PUBLICKEY_SIZE];
typedef unsigned char ssh_sntrup761_privkey[SNTRUP761_SECRETKEY_SIZE];
typedef unsigned char ssh_sntrup761_ciphertext[SNTRUP761_CIPHERTEXT_SIZE];
int ssh_client_sntrup761x25519_init(ssh_session session);
void ssh_client_sntrup761x25519_remove_callbacks(ssh_session session);
#ifdef WITH_SERVER
void ssh_server_sntrup761x25519_init(ssh_session session);
#endif /* WITH_SERVER */
#ifdef __cplusplus
}
#endif
#endif /* SNTRUP761_H_ */