160 lines
5.0 KiB
C
160 lines
5.0 KiB
C
/* curve25519.h
|
|
*
|
|
* Copyright (C) 2006-2019 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfSSL.
|
|
*
|
|
* wolfSSL is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfSSL 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
/*!
|
|
\file wolfssl/wolfcrypt/curve25519.h
|
|
*/
|
|
|
|
|
|
#ifndef WOLF_CRYPT_CURVE25519_H
|
|
#define WOLF_CRYPT_CURVE25519_H
|
|
|
|
#include <wolfssl/wolfcrypt/types.h>
|
|
|
|
#ifdef HAVE_CURVE25519
|
|
|
|
#include <wolfssl/wolfcrypt/fe_operations.h>
|
|
#include <wolfssl/wolfcrypt/random.h>
|
|
|
|
#ifdef WOLFSSL_ASYNC_CRYPT
|
|
#include <wolfssl/wolfcrypt/async.h>
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define CURVE25519_KEYSIZE 32
|
|
|
|
/* curve25519 set type */
|
|
typedef struct {
|
|
int size; /* The size of the curve in octets */
|
|
const char* name; /* name of this curve */
|
|
} curve25519_set_type;
|
|
|
|
|
|
/* ECC point, the internal structure is Little endian
|
|
* the mathematical functions used the endianess */
|
|
typedef struct {
|
|
byte point[CURVE25519_KEYSIZE];
|
|
#ifdef FREESCALE_LTC_ECC
|
|
byte pointY[CURVE25519_KEYSIZE];
|
|
#endif
|
|
} ECPoint;
|
|
|
|
/* A CURVE25519 Key */
|
|
typedef struct curve25519_key {
|
|
int idx; /* Index into the ecc_sets[] for the parameters of
|
|
this curve if -1, this key is using user supplied
|
|
curve in dp */
|
|
const curve25519_set_type* dp; /* domain parameters, either points to
|
|
curves (idx >= 0) or user supplied */
|
|
ECPoint p; /* public key */
|
|
ECPoint k; /* private key */
|
|
|
|
#ifdef WOLFSSL_ASYNC_CRYPT
|
|
WC_ASYNC_DEV asyncDev;
|
|
#endif
|
|
} curve25519_key;
|
|
|
|
enum {
|
|
EC25519_LITTLE_ENDIAN=0,
|
|
EC25519_BIG_ENDIAN=1
|
|
};
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_make_key(WC_RNG* rng, int keysize, curve25519_key* key);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_shared_secret(curve25519_key* private_key,
|
|
curve25519_key* public_key,
|
|
byte* out, word32* outlen);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_shared_secret_ex(curve25519_key* private_key,
|
|
curve25519_key* public_key,
|
|
byte* out, word32* outlen, int endian);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_init(curve25519_key* key);
|
|
|
|
WOLFSSL_API
|
|
void wc_curve25519_free(curve25519_key* key);
|
|
|
|
|
|
/* raw key helpers */
|
|
WOLFSSL_API
|
|
int wc_curve25519_import_private(const byte* priv, word32 privSz,
|
|
curve25519_key* key);
|
|
WOLFSSL_API
|
|
int wc_curve25519_import_private_ex(const byte* priv, word32 privSz,
|
|
curve25519_key* key, int endian);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_import_private_raw(const byte* priv, word32 privSz,
|
|
const byte* pub, word32 pubSz, curve25519_key* key);
|
|
WOLFSSL_API
|
|
int wc_curve25519_import_private_raw_ex(const byte* priv, word32 privSz,
|
|
const byte* pub, word32 pubSz,
|
|
curve25519_key* key, int endian);
|
|
WOLFSSL_API
|
|
int wc_curve25519_export_private_raw(curve25519_key* key, byte* out,
|
|
word32* outLen);
|
|
WOLFSSL_API
|
|
int wc_curve25519_export_private_raw_ex(curve25519_key* key, byte* out,
|
|
word32* outLen, int endian);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_import_public(const byte* in, word32 inLen,
|
|
curve25519_key* key);
|
|
WOLFSSL_API
|
|
int wc_curve25519_import_public_ex(const byte* in, word32 inLen,
|
|
curve25519_key* key, int endian);
|
|
WOLFSSL_API
|
|
int wc_curve25519_check_public(const byte* pub, word32 pubSz, int endian);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_export_public(curve25519_key* key, byte* out, word32* outLen);
|
|
WOLFSSL_API
|
|
int wc_curve25519_export_public_ex(curve25519_key* key, byte* out,
|
|
word32* outLen, int endian);
|
|
|
|
WOLFSSL_API
|
|
int wc_curve25519_export_key_raw(curve25519_key* key,
|
|
byte* priv, word32 *privSz,
|
|
byte* pub, word32 *pubSz);
|
|
WOLFSSL_API
|
|
int wc_curve25519_export_key_raw_ex(curve25519_key* key,
|
|
byte* priv, word32 *privSz,
|
|
byte* pub, word32 *pubSz,
|
|
int endian);
|
|
/* size helper */
|
|
WOLFSSL_API
|
|
int wc_curve25519_size(curve25519_key* key);
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* HAVE_CURVE25519 */
|
|
#endif /* WOLF_CRYPT_CURVE25519_H */
|
|
|