[457] | 1 | /* curve448.h
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| 2 | *
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| 3 | * Copyright (C) 2006-2020 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 | /* Implemented to: RFC 7748 */
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| 23 |
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| 24 |
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| 25 | #ifndef WOLF_CRYPT_CURVE448_H
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| 26 | #define WOLF_CRYPT_CURVE448_H
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| 27 |
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| 28 | #include <wolfssl/wolfcrypt/types.h>
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| 29 |
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| 30 | #ifdef HAVE_CURVE448
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| 31 |
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| 32 | #include <wolfssl/wolfcrypt/fe_448.h>
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| 33 | #include <wolfssl/wolfcrypt/random.h>
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| 34 |
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| 35 | #ifdef WOLFSSL_ASYNC_CRYPT
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| 36 | #include <wolfssl/wolfcrypt/async.h>
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| 37 | #endif
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| 38 |
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| 39 | #ifdef __cplusplus
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| 40 | extern "C" {
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| 41 | #endif
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| 42 |
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| 43 | #define CURVE448_KEY_SIZE 56
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| 44 | #define CURVE448_PUB_KEY_SIZE 56
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| 45 |
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| 46 |
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| 47 | /* A CURVE448 Key */
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| 48 | typedef struct curve448_key {
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| 49 | byte p[CURVE448_PUB_KEY_SIZE]; /* public key */
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| 50 | byte k[CURVE448_KEY_SIZE]; /* private key */
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| 51 |
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| 52 | #ifdef WOLFSSL_ASYNC_CRYPT
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| 53 | WC_ASYNC_DEV asyncDev;
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| 54 | #endif
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| 55 | } curve448_key;
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| 56 |
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| 57 | enum {
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| 58 | EC448_LITTLE_ENDIAN = 0,
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| 59 | EC448_BIG_ENDIAN = 1
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| 60 | };
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| 61 |
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| 62 | WOLFSSL_API
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| 63 | int wc_curve448_make_key(WC_RNG* rng, int keysize, curve448_key* key);
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| 64 |
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| 65 | WOLFSSL_API
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| 66 | int wc_curve448_shared_secret(curve448_key* private_key,
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| 67 | curve448_key* public_key,
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| 68 | byte* out, word32* outlen);
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| 69 |
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| 70 | WOLFSSL_API
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| 71 | int wc_curve448_shared_secret_ex(curve448_key* private_key,
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| 72 | curve448_key* public_key,
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| 73 | byte* out, word32* outlen, int endian);
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| 74 |
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| 75 | WOLFSSL_API
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| 76 | int wc_curve448_init(curve448_key* key);
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| 77 |
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| 78 | WOLFSSL_API
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| 79 | void wc_curve448_free(curve448_key* key);
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| 80 |
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| 81 |
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| 82 | /* raw key helpers */
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| 83 | WOLFSSL_API
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| 84 | int wc_curve448_import_private(const byte* priv, word32 privSz,
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| 85 | curve448_key* key);
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| 86 | WOLFSSL_API
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| 87 | int wc_curve448_import_private_ex(const byte* priv, word32 privSz,
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| 88 | curve448_key* key, int endian);
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| 89 |
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| 90 | WOLFSSL_API
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| 91 | int wc_curve448_import_private_raw(const byte* priv, word32 privSz,
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| 92 | const byte* pub, word32 pubSz,
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| 93 | curve448_key* key);
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| 94 | WOLFSSL_API
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| 95 | int wc_curve448_import_private_raw_ex(const byte* priv, word32 privSz,
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| 96 | const byte* pub, word32 pubSz,
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| 97 | curve448_key* key, int endian);
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| 98 | WOLFSSL_API
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| 99 | int wc_curve448_export_private_raw(curve448_key* key, byte* out,
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| 100 | word32* outLen);
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| 101 | WOLFSSL_API
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| 102 | int wc_curve448_export_private_raw_ex(curve448_key* key, byte* out,
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| 103 | word32* outLen, int endian);
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| 104 |
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| 105 | WOLFSSL_API
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| 106 | int wc_curve448_import_public(const byte* in, word32 inLen,
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| 107 | curve448_key* key);
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| 108 | WOLFSSL_API
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| 109 | int wc_curve448_import_public_ex(const byte* in, word32 inLen,
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| 110 | curve448_key* key, int endian);
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| 111 | WOLFSSL_API
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| 112 | int wc_curve448_check_public(const byte* pub, word32 pubSz, int endian);
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| 113 |
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| 114 | WOLFSSL_API
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| 115 | int wc_curve448_export_public(curve448_key* key, byte* out, word32* outLen);
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| 116 | WOLFSSL_API
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| 117 | int wc_curve448_export_public_ex(curve448_key* key, byte* out,
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| 118 | word32* outLen, int endian);
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| 119 |
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| 120 | WOLFSSL_API
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| 121 | int wc_curve448_export_key_raw(curve448_key* key,
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| 122 | byte* priv, word32 *privSz,
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| 123 | byte* pub, word32 *pubSz);
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| 124 | WOLFSSL_API
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| 125 | int wc_curve448_export_key_raw_ex(curve448_key* key,
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| 126 | byte* priv, word32 *privSz,
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| 127 | byte* pub, word32 *pubSz,
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| 128 | int endian);
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| 129 | /* size helper */
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| 130 | WOLFSSL_API
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| 131 | int wc_curve448_size(curve448_key* key);
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| 132 |
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| 133 | #ifdef __cplusplus
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| 134 | } /* extern "C" */
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| 135 | #endif
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| 136 |
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| 137 | #endif /* HAVE_CURVE448 */
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| 138 | #endif /* WOLF_CRYPT_CURVE448_H */
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| 139 |
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