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140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/* curve448.h
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*
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* Copyright (C) 2006-2020 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/* Implemented to: RFC 7748 */
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#ifndef WOLF_CRYPT_CURVE448_H
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#define WOLF_CRYPT_CURVE448_H
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#include <libs/libwolfssl/wolfcrypt/types.h>
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#ifdef HAVE_CURVE448
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#include <libs/libwolfssl/wolfcrypt/fe_448.h>
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#include <libs/libwolfssl/wolfcrypt/random.h>
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#ifdef WOLFSSL_ASYNC_CRYPT
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#include <libs/libwolfssl/wolfcrypt/async.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CURVE448_KEY_SIZE 56
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#define CURVE448_PUB_KEY_SIZE 56
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/* A CURVE448 Key */
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typedef struct curve448_key {
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byte p[CURVE448_PUB_KEY_SIZE]; /* public key */
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byte k[CURVE448_KEY_SIZE]; /* private key */
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#ifdef WOLFSSL_ASYNC_CRYPT
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WC_ASYNC_DEV asyncDev;
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#endif
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} curve448_key;
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enum {
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EC448_LITTLE_ENDIAN = 0,
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EC448_BIG_ENDIAN = 1
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};
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WOLFSSL_API
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int wc_curve448_make_key(WC_RNG* rng, int keysize, curve448_key* key);
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WOLFSSL_API
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int wc_curve448_shared_secret(curve448_key* private_key,
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curve448_key* public_key,
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byte* out, word32* outlen);
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WOLFSSL_API
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int wc_curve448_shared_secret_ex(curve448_key* private_key,
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curve448_key* public_key,
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byte* out, word32* outlen, int endian);
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WOLFSSL_API
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int wc_curve448_init(curve448_key* key);
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WOLFSSL_API
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void wc_curve448_free(curve448_key* key);
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/* raw key helpers */
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WOLFSSL_API
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int wc_curve448_import_private(const byte* priv, word32 privSz,
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curve448_key* key);
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WOLFSSL_API
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int wc_curve448_import_private_ex(const byte* priv, word32 privSz,
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curve448_key* key, int endian);
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WOLFSSL_API
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int wc_curve448_import_private_raw(const byte* priv, word32 privSz,
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const byte* pub, word32 pubSz,
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curve448_key* key);
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WOLFSSL_API
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int wc_curve448_import_private_raw_ex(const byte* priv, word32 privSz,
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const byte* pub, word32 pubSz,
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curve448_key* key, int endian);
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WOLFSSL_API
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int wc_curve448_export_private_raw(curve448_key* key, byte* out,
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word32* outLen);
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WOLFSSL_API
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int wc_curve448_export_private_raw_ex(curve448_key* key, byte* out,
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word32* outLen, int endian);
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WOLFSSL_API
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int wc_curve448_import_public(const byte* in, word32 inLen,
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curve448_key* key);
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WOLFSSL_API
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int wc_curve448_import_public_ex(const byte* in, word32 inLen,
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curve448_key* key, int endian);
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WOLFSSL_API
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int wc_curve448_check_public(const byte* pub, word32 pubSz, int endian);
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WOLFSSL_API
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int wc_curve448_export_public(curve448_key* key, byte* out, word32* outLen);
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WOLFSSL_API
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int wc_curve448_export_public_ex(curve448_key* key, byte* out,
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word32* outLen, int endian);
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WOLFSSL_API
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int wc_curve448_export_key_raw(curve448_key* key,
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byte* priv, word32 *privSz,
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byte* pub, word32 *pubSz);
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WOLFSSL_API
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int wc_curve448_export_key_raw_ex(curve448_key* key,
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byte* priv, word32 *privSz,
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byte* pub, word32 *pubSz,
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int endian);
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/* size helper */
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WOLFSSL_API
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int wc_curve448_size(curve448_key* key);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* HAVE_CURVE448 */
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#endif /* WOLF_CRYPT_CURVE448_H */
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