| /* curve25519.h |
| * |
| * Copyright (C) 2006-2015 wolfSSL Inc. |
| * |
| * This file is part of wolfSSL. (formerly known as CyaSSL) |
| * |
| * 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 02110-1301, USA |
| */ |
| |
| #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 __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 */ |
| typedef struct { |
| byte point[CURVE25519_KEYSIZE]; |
| }ECPoint; |
| |
| /* A CURVE25519 Key */ |
| typedef struct { |
| 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 */ |
| } curve25519_key; |
| |
| WOLFSSL_API |
| int wc_curve25519_make_key(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_init(curve25519_key* key); |
| |
| WOLFSSL_API |
| void wc_curve25519_free(curve25519_key* key); |
| |
| |
| /* raw key helpers */ |
| 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_export_private_raw(curve25519_key* key, byte* out, |
| word32* outLen); |
| |
| WOLFSSL_API |
| int wc_curve25519_import_public(const byte* in, word32 inLen, |
| curve25519_key* key); |
| |
| WOLFSSL_API |
| int wc_curve25519_export_public(curve25519_key* key, byte* out, word32* outLen); |
| |
| |
| /* size helper */ |
| WOLFSSL_API |
| int wc_curve25519_size(curve25519_key* key); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* HAVE_CURVE25519 */ |
| #endif /* WOLF_CRYPT_CURVE25519_H */ |
| |