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crypto: porting Curve25519 algorithm into nuttx crypto 

Signed-off-by: makejian <makejian@xiaomi.com>
This commit is contained in:
makejian 2023-05-31 11:28:34 +08:00 committed by Xiang Xiao
parent 79242cc1e7
commit d5041420a3
3 changed files with 1262 additions and 0 deletions
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1
crypto/Makefile
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@ -52,6 +52,7 @@ ifeq ($(CONFIG_CRYPTO_CRYPTODEV),y)
CRYPTO_CSRCS += key_wrap.c
CRYPTO_CSRCS += siphash.c
CRYPTO_CSRCS += hmac_buff.c
CRYPTO_CSRCS += curve25519.c
endif
# BLAKE2s hash algorithm

1216
crypto/curve25519.c Normal file
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45
include/crypto/curve25519.h Normal file
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@ -0,0 +1,45 @@
/****************************************************************************
* include/crypto/curve25519.h
* $OpenBSD: curve25519.h,v 1.2 2020/07/22 13:54:30 tobhe Exp $
*
* Copyright (C) 2019-2020 Matt Dunwoodie <ncon@noconroy.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
****************************************************************************/
#ifndef __INCLUDE_CRYPTO_CURVE25519_H
#define __INCLUDE_CRYPTO_CURVE25519_H
#define CURVE25519_KEY_SIZE 32
int curve25519(uint8_t out[CURVE25519_KEY_SIZE],
const uint8_t scalar[CURVE25519_KEY_SIZE],
const uint8_t point[CURVE25519_KEY_SIZE]);
int curve25519_generate_public(uint8_t pub[CURVE25519_KEY_SIZE],
const uint8_t secret[CURVE25519_KEY_SIZE]);
static inline void
curve25519_clamp_secret(uint8_t secret[CURVE25519_KEY_SIZE])
{
secret[0] &= 248;
secret[31] = (secret[31] & 127) | 64;
}
static inline void
curve25519_generate_secret(uint8_t secret[CURVE25519_KEY_SIZE])
{
arc4random_buf(secret, CURVE25519_KEY_SIZE);
curve25519_clamp_secret(secret);
}
#endif /* __INCLUDE_CRYPTO_CURVE25519_H */