wolf SSL / wolfSSL

wolfSSL SSL/TLS library, support up to TLS1.3

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wolfssl/wolfcrypt/curve25519.h@16:8e0d178b1d1e, 2020-06-04 (annotated)

Committer:
wolfSSL
Date:
Thu Jun 04 23:57:22 2020 +0000
Revision:
16:8e0d178b1d1e
Parent:
15:117db924cf7c 
wolfSSL 4.4.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 15:117db924cf7c 1 /* curve25519.h
wolfSSL 15:117db924cf7c 2 *
wolfSSL 16:8e0d178b1d1e 3 * Copyright (C) 2006-2020 wolfSSL Inc.
wolfSSL 15:117db924cf7c 4 *
wolfSSL 15:117db924cf7c 5 * This file is part of wolfSSL.
wolfSSL 15:117db924cf7c 6 *
wolfSSL 15:117db924cf7c 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 15:117db924cf7c 8 * it under the terms of the GNU General Public License as published by
wolfSSL 15:117db924cf7c 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 15:117db924cf7c 10 * (at your option) any later version.
wolfSSL 15:117db924cf7c 11 *
wolfSSL 15:117db924cf7c 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 15:117db924cf7c 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 15:117db924cf7c 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 15:117db924cf7c 15 * GNU General Public License for more details.
wolfSSL 15:117db924cf7c 16 *
wolfSSL 15:117db924cf7c 17 * You should have received a copy of the GNU General Public License
wolfSSL 15:117db924cf7c 18 * along with this program; if not, write to the Free Software
wolfSSL 15:117db924cf7c 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 15:117db924cf7c 20 */
wolfSSL 15:117db924cf7c 21
wolfSSL 15:117db924cf7c 22 /*!
wolfSSL 15:117db924cf7c 23 \file wolfssl/wolfcrypt/curve25519.h
wolfSSL 15:117db924cf7c 24 */
wolfSSL 15:117db924cf7c 25
wolfSSL 15:117db924cf7c 26
wolfSSL 15:117db924cf7c 27 #ifndef WOLF_CRYPT_CURVE25519_H
wolfSSL 15:117db924cf7c 28 #define WOLF_CRYPT_CURVE25519_H
wolfSSL 15:117db924cf7c 29
wolfSSL 15:117db924cf7c 30 #include <wolfssl/wolfcrypt/types.h>
wolfSSL 15:117db924cf7c 31
wolfSSL 15:117db924cf7c 32 #ifdef HAVE_CURVE25519
wolfSSL 15:117db924cf7c 33
wolfSSL 15:117db924cf7c 34 #include <wolfssl/wolfcrypt/fe_operations.h>
wolfSSL 15:117db924cf7c 35 #include <wolfssl/wolfcrypt/random.h>
wolfSSL 15:117db924cf7c 36
wolfSSL 15:117db924cf7c 37 #ifdef WOLFSSL_ASYNC_CRYPT
wolfSSL 15:117db924cf7c 38 #include <wolfssl/wolfcrypt/async.h>
wolfSSL 15:117db924cf7c 39 #endif
wolfSSL 15:117db924cf7c 40
wolfSSL 15:117db924cf7c 41 #ifdef __cplusplus
wolfSSL 15:117db924cf7c 42 extern "C" {
wolfSSL 15:117db924cf7c 43 #endif
wolfSSL 15:117db924cf7c 44
wolfSSL 15:117db924cf7c 45 #define CURVE25519_KEYSIZE 32
wolfSSL 15:117db924cf7c 46
wolfSSL 16:8e0d178b1d1e 47 #ifdef WOLFSSL_NAMES_STATIC
wolfSSL 16:8e0d178b1d1e 48 typedef char curve25519_str[12];
wolfSSL 16:8e0d178b1d1e 49 #else
wolfSSL 16:8e0d178b1d1e 50 typedef const char* curve25519_str;
wolfSSL 16:8e0d178b1d1e 51 #endif
wolfSSL 16:8e0d178b1d1e 52
wolfSSL 15:117db924cf7c 53 /* curve25519 set type */
wolfSSL 15:117db924cf7c 54 typedef struct {
wolfSSL 16:8e0d178b1d1e 55 int size; /* The size of the curve in octets */
wolfSSL 16:8e0d178b1d1e 56 curve25519_str name; /* name of this curve */
wolfSSL 15:117db924cf7c 57 } curve25519_set_type;
wolfSSL 15:117db924cf7c 58
wolfSSL 15:117db924cf7c 59
wolfSSL 15:117db924cf7c 60 /* ECC point, the internal structure is Little endian
wolfSSL 16:8e0d178b1d1e 61 * the mathematical functions used the endianness */
wolfSSL 15:117db924cf7c 62 typedef struct {
wolfSSL 15:117db924cf7c 63 byte point[CURVE25519_KEYSIZE];
wolfSSL 15:117db924cf7c 64 #ifdef FREESCALE_LTC_ECC
wolfSSL 15:117db924cf7c 65 byte pointY[CURVE25519_KEYSIZE];
wolfSSL 15:117db924cf7c 66 #endif
wolfSSL 15:117db924cf7c 67 } ECPoint;
wolfSSL 15:117db924cf7c 68
wolfSSL 15:117db924cf7c 69 /* A CURVE25519 Key */
wolfSSL 15:117db924cf7c 70 typedef struct curve25519_key {
wolfSSL 15:117db924cf7c 71 int idx; /* Index into the ecc_sets[] for the parameters of
wolfSSL 15:117db924cf7c 72 this curve if -1, this key is using user supplied
wolfSSL 15:117db924cf7c 73 curve in dp */
wolfSSL 15:117db924cf7c 74 const curve25519_set_type* dp; /* domain parameters, either points to
wolfSSL 15:117db924cf7c 75 curves (idx >= 0) or user supplied */
wolfSSL 15:117db924cf7c 76 ECPoint p; /* public key */
wolfSSL 15:117db924cf7c 77 ECPoint k; /* private key */
wolfSSL 15:117db924cf7c 78
wolfSSL 15:117db924cf7c 79 #ifdef WOLFSSL_ASYNC_CRYPT
wolfSSL 15:117db924cf7c 80 WC_ASYNC_DEV asyncDev;
wolfSSL 15:117db924cf7c 81 #endif
wolfSSL 15:117db924cf7c 82 } curve25519_key;
wolfSSL 15:117db924cf7c 83
wolfSSL 15:117db924cf7c 84 enum {
wolfSSL 15:117db924cf7c 85 EC25519_LITTLE_ENDIAN=0,
wolfSSL 15:117db924cf7c 86 EC25519_BIG_ENDIAN=1
wolfSSL 15:117db924cf7c 87 };
wolfSSL 15:117db924cf7c 88
wolfSSL 15:117db924cf7c 89 WOLFSSL_API
wolfSSL 15:117db924cf7c 90 int wc_curve25519_make_key(WC_RNG* rng, int keysize, curve25519_key* key);
wolfSSL 15:117db924cf7c 91
wolfSSL 15:117db924cf7c 92 WOLFSSL_API
wolfSSL 15:117db924cf7c 93 int wc_curve25519_shared_secret(curve25519_key* private_key,
wolfSSL 15:117db924cf7c 94 curve25519_key* public_key,
wolfSSL 15:117db924cf7c 95 byte* out, word32* outlen);
wolfSSL 15:117db924cf7c 96
wolfSSL 15:117db924cf7c 97 WOLFSSL_API
wolfSSL 15:117db924cf7c 98 int wc_curve25519_shared_secret_ex(curve25519_key* private_key,
wolfSSL 15:117db924cf7c 99 curve25519_key* public_key,
wolfSSL 15:117db924cf7c 100 byte* out, word32* outlen, int endian);
wolfSSL 15:117db924cf7c 101
wolfSSL 15:117db924cf7c 102 WOLFSSL_API
wolfSSL 15:117db924cf7c 103 int wc_curve25519_init(curve25519_key* key);
wolfSSL 15:117db924cf7c 104
wolfSSL 15:117db924cf7c 105 WOLFSSL_API
wolfSSL 15:117db924cf7c 106 void wc_curve25519_free(curve25519_key* key);
wolfSSL 15:117db924cf7c 107
wolfSSL 15:117db924cf7c 108
wolfSSL 15:117db924cf7c 109 /* raw key helpers */
wolfSSL 15:117db924cf7c 110 WOLFSSL_API
wolfSSL 15:117db924cf7c 111 int wc_curve25519_import_private(const byte* priv, word32 privSz,
wolfSSL 15:117db924cf7c 112 curve25519_key* key);
wolfSSL 15:117db924cf7c 113 WOLFSSL_API
wolfSSL 15:117db924cf7c 114 int wc_curve25519_import_private_ex(const byte* priv, word32 privSz,
wolfSSL 15:117db924cf7c 115 curve25519_key* key, int endian);
wolfSSL 15:117db924cf7c 116
wolfSSL 15:117db924cf7c 117 WOLFSSL_API
wolfSSL 15:117db924cf7c 118 int wc_curve25519_import_private_raw(const byte* priv, word32 privSz,
wolfSSL 15:117db924cf7c 119 const byte* pub, word32 pubSz, curve25519_key* key);
wolfSSL 15:117db924cf7c 120 WOLFSSL_API
wolfSSL 15:117db924cf7c 121 int wc_curve25519_import_private_raw_ex(const byte* priv, word32 privSz,
wolfSSL 15:117db924cf7c 122 const byte* pub, word32 pubSz,
wolfSSL 15:117db924cf7c 123 curve25519_key* key, int endian);
wolfSSL 15:117db924cf7c 124 WOLFSSL_API
wolfSSL 15:117db924cf7c 125 int wc_curve25519_export_private_raw(curve25519_key* key, byte* out,
wolfSSL 15:117db924cf7c 126 word32* outLen);
wolfSSL 15:117db924cf7c 127 WOLFSSL_API
wolfSSL 15:117db924cf7c 128 int wc_curve25519_export_private_raw_ex(curve25519_key* key, byte* out,
wolfSSL 15:117db924cf7c 129 word32* outLen, int endian);
wolfSSL 15:117db924cf7c 130
wolfSSL 15:117db924cf7c 131 WOLFSSL_API
wolfSSL 15:117db924cf7c 132 int wc_curve25519_import_public(const byte* in, word32 inLen,
wolfSSL 15:117db924cf7c 133 curve25519_key* key);
wolfSSL 15:117db924cf7c 134 WOLFSSL_API
wolfSSL 15:117db924cf7c 135 int wc_curve25519_import_public_ex(const byte* in, word32 inLen,
wolfSSL 15:117db924cf7c 136 curve25519_key* key, int endian);
wolfSSL 16:8e0d178b1d1e 137 WOLFSSL_API
wolfSSL 16:8e0d178b1d1e 138 int wc_curve25519_check_public(const byte* pub, word32 pubSz, int endian);
wolfSSL 15:117db924cf7c 139
wolfSSL 15:117db924cf7c 140 WOLFSSL_API
wolfSSL 15:117db924cf7c 141 int wc_curve25519_export_public(curve25519_key* key, byte* out, word32* outLen);
wolfSSL 15:117db924cf7c 142 WOLFSSL_API
wolfSSL 15:117db924cf7c 143 int wc_curve25519_export_public_ex(curve25519_key* key, byte* out,
wolfSSL 15:117db924cf7c 144 word32* outLen, int endian);
wolfSSL 15:117db924cf7c 145
wolfSSL 15:117db924cf7c 146 WOLFSSL_API
wolfSSL 15:117db924cf7c 147 int wc_curve25519_export_key_raw(curve25519_key* key,
wolfSSL 15:117db924cf7c 148 byte* priv, word32 *privSz,
wolfSSL 15:117db924cf7c 149 byte* pub, word32 *pubSz);
wolfSSL 15:117db924cf7c 150 WOLFSSL_API
wolfSSL 15:117db924cf7c 151 int wc_curve25519_export_key_raw_ex(curve25519_key* key,
wolfSSL 15:117db924cf7c 152 byte* priv, word32 *privSz,
wolfSSL 15:117db924cf7c 153 byte* pub, word32 *pubSz,
wolfSSL 15:117db924cf7c 154 int endian);
wolfSSL 15:117db924cf7c 155 /* size helper */
wolfSSL 15:117db924cf7c 156 WOLFSSL_API
wolfSSL 15:117db924cf7c 157 int wc_curve25519_size(curve25519_key* key);
wolfSSL 15:117db924cf7c 158
wolfSSL 15:117db924cf7c 159 #ifdef __cplusplus
wolfSSL 15:117db924cf7c 160 } /* extern "C" */
wolfSSL 15:117db924cf7c 161 #endif
wolfSSL 15:117db924cf7c 162
wolfSSL 15:117db924cf7c 163 #endif /* HAVE_CURVE25519 */
wolfSSL 15:117db924cf7c 164 #endif /* WOLF_CRYPT_CURVE25519_H */
wolfSSL 15:117db924cf7c 165
wolfSSL 15:117db924cf7c 166