wolf SSL / wolfSSL-TLS13-Beta

wolfSSL 3.11.1 for TLS1.3 beta

Fork of wolfSSL by wolf SSL

wolfssl/wolfcrypt/curve25519.h@13:80fb167dafdf, 2017-05-30 (annotated)

Committer:
wolfSSL
Date:
Tue May 30 06:16:19 2017 +0000
Revision:
13:80fb167dafdf
Parent:
11:cee25a834751 
wolfSSL 3.11.1: TLS1.3 Beta

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 11:cee25a834751 1 /* curve25519.h
wolfSSL 11:cee25a834751 2 *
wolfSSL 11:cee25a834751 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 11:cee25a834751 4 *
wolfSSL 11:cee25a834751 5 * This file is part of wolfSSL.
wolfSSL 11:cee25a834751 6 *
wolfSSL 11:cee25a834751 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 11:cee25a834751 8 * it under the terms of the GNU General Public License as published by
wolfSSL 11:cee25a834751 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 11:cee25a834751 10 * (at your option) any later version.
wolfSSL 11:cee25a834751 11 *
wolfSSL 11:cee25a834751 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 11:cee25a834751 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 11:cee25a834751 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 11:cee25a834751 15 * GNU General Public License for more details.
wolfSSL 11:cee25a834751 16 *
wolfSSL 11:cee25a834751 17 * You should have received a copy of the GNU General Public License
wolfSSL 11:cee25a834751 18 * along with this program; if not, write to the Free Software
wolfSSL 11:cee25a834751 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 11:cee25a834751 20 */
wolfSSL 11:cee25a834751 21
wolfSSL 11:cee25a834751 22
wolfSSL 11:cee25a834751 23 #ifndef WOLF_CRYPT_CURVE25519_H
wolfSSL 11:cee25a834751 24 #define WOLF_CRYPT_CURVE25519_H
wolfSSL 11:cee25a834751 25
wolfSSL 11:cee25a834751 26 #include <wolfssl/wolfcrypt/types.h>
wolfSSL 11:cee25a834751 27
wolfSSL 11:cee25a834751 28 #ifdef HAVE_CURVE25519
wolfSSL 11:cee25a834751 29
wolfSSL 11:cee25a834751 30 #include <wolfssl/wolfcrypt/fe_operations.h>
wolfSSL 11:cee25a834751 31 #include <wolfssl/wolfcrypt/random.h>
wolfSSL 11:cee25a834751 32
wolfSSL 11:cee25a834751 33 #ifdef __cplusplus
wolfSSL 11:cee25a834751 34 extern "C" {
wolfSSL 11:cee25a834751 35 #endif
wolfSSL 11:cee25a834751 36
wolfSSL 11:cee25a834751 37 #define CURVE25519_KEYSIZE 32
wolfSSL 11:cee25a834751 38
wolfSSL 11:cee25a834751 39 /* curve25519 set type */
wolfSSL 11:cee25a834751 40 typedef struct {
wolfSSL 11:cee25a834751 41 int size; /* The size of the curve in octets */
wolfSSL 11:cee25a834751 42 const char* name; /* name of this curve */
wolfSSL 11:cee25a834751 43 } curve25519_set_type;
wolfSSL 11:cee25a834751 44
wolfSSL 11:cee25a834751 45
wolfSSL 11:cee25a834751 46 /* ECC point, the internal structure is Little endian
wolfSSL 11:cee25a834751 47 * the mathematical functions used the endianess */
wolfSSL 11:cee25a834751 48 typedef struct {
wolfSSL 11:cee25a834751 49 byte point[CURVE25519_KEYSIZE];
wolfSSL 11:cee25a834751 50 #ifdef FREESCALE_LTC_ECC
wolfSSL 11:cee25a834751 51 byte pointY[CURVE25519_KEYSIZE];
wolfSSL 11:cee25a834751 52 #endif
wolfSSL 11:cee25a834751 53 }ECPoint;
wolfSSL 11:cee25a834751 54
wolfSSL 11:cee25a834751 55 /* A CURVE25519 Key */
wolfSSL 11:cee25a834751 56 typedef struct {
wolfSSL 11:cee25a834751 57 int idx; /* Index into the ecc_sets[] for the parameters of
wolfSSL 11:cee25a834751 58 this curve if -1, this key is using user supplied
wolfSSL 11:cee25a834751 59 curve in dp */
wolfSSL 11:cee25a834751 60 const curve25519_set_type* dp; /* domain parameters, either points to
wolfSSL 11:cee25a834751 61 curves (idx >= 0) or user supplied */
wolfSSL 11:cee25a834751 62 ECPoint p; /* public key */
wolfSSL 11:cee25a834751 63 ECPoint k; /* private key */
wolfSSL 11:cee25a834751 64 } curve25519_key;
wolfSSL 11:cee25a834751 65
wolfSSL 11:cee25a834751 66 enum {
wolfSSL 11:cee25a834751 67 EC25519_LITTLE_ENDIAN=0,
wolfSSL 11:cee25a834751 68 EC25519_BIG_ENDIAN=1
wolfSSL 11:cee25a834751 69 };
wolfSSL 11:cee25a834751 70
wolfSSL 11:cee25a834751 71 WOLFSSL_API
wolfSSL 11:cee25a834751 72 int wc_curve25519_make_key(WC_RNG* rng, int keysize, curve25519_key* key);
wolfSSL 11:cee25a834751 73
wolfSSL 11:cee25a834751 74 WOLFSSL_API
wolfSSL 11:cee25a834751 75 int wc_curve25519_shared_secret(curve25519_key* private_key,
wolfSSL 11:cee25a834751 76 curve25519_key* public_key,
wolfSSL 11:cee25a834751 77 byte* out, word32* outlen);
wolfSSL 11:cee25a834751 78
wolfSSL 11:cee25a834751 79 WOLFSSL_API
wolfSSL 11:cee25a834751 80 int wc_curve25519_shared_secret_ex(curve25519_key* private_key,
wolfSSL 11:cee25a834751 81 curve25519_key* public_key,
wolfSSL 11:cee25a834751 82 byte* out, word32* outlen, int endian);
wolfSSL 11:cee25a834751 83
wolfSSL 11:cee25a834751 84 WOLFSSL_API
wolfSSL 11:cee25a834751 85 int wc_curve25519_init(curve25519_key* key);
wolfSSL 11:cee25a834751 86
wolfSSL 11:cee25a834751 87 WOLFSSL_API
wolfSSL 11:cee25a834751 88 void wc_curve25519_free(curve25519_key* key);
wolfSSL 11:cee25a834751 89
wolfSSL 11:cee25a834751 90
wolfSSL 11:cee25a834751 91 /* raw key helpers */
wolfSSL 11:cee25a834751 92 WOLFSSL_API
wolfSSL 11:cee25a834751 93 int wc_curve25519_import_private(const byte* priv, word32 privSz,
wolfSSL 11:cee25a834751 94 curve25519_key* key);
wolfSSL 11:cee25a834751 95 WOLFSSL_API
wolfSSL 11:cee25a834751 96 int wc_curve25519_import_private_ex(const byte* priv, word32 privSz,
wolfSSL 11:cee25a834751 97 curve25519_key* key, int endian);
wolfSSL 11:cee25a834751 98
wolfSSL 11:cee25a834751 99 WOLFSSL_API
wolfSSL 11:cee25a834751 100 int wc_curve25519_import_private_raw(const byte* priv, word32 privSz,
wolfSSL 11:cee25a834751 101 const byte* pub, word32 pubSz, curve25519_key* key);
wolfSSL 11:cee25a834751 102 WOLFSSL_API
wolfSSL 11:cee25a834751 103 int wc_curve25519_import_private_raw_ex(const byte* priv, word32 privSz,
wolfSSL 11:cee25a834751 104 const byte* pub, word32 pubSz,
wolfSSL 11:cee25a834751 105 curve25519_key* key, int endian);
wolfSSL 11:cee25a834751 106 WOLFSSL_API
wolfSSL 11:cee25a834751 107 int wc_curve25519_export_private_raw(curve25519_key* key, byte* out,
wolfSSL 11:cee25a834751 108 word32* outLen);
wolfSSL 11:cee25a834751 109 WOLFSSL_API
wolfSSL 11:cee25a834751 110 int wc_curve25519_export_private_raw_ex(curve25519_key* key, byte* out,
wolfSSL 11:cee25a834751 111 word32* outLen, int endian);
wolfSSL 11:cee25a834751 112
wolfSSL 11:cee25a834751 113 WOLFSSL_API
wolfSSL 11:cee25a834751 114 int wc_curve25519_import_public(const byte* in, word32 inLen,
wolfSSL 11:cee25a834751 115 curve25519_key* key);
wolfSSL 11:cee25a834751 116 WOLFSSL_API
wolfSSL 11:cee25a834751 117 int wc_curve25519_import_public_ex(const byte* in, word32 inLen,
wolfSSL 11:cee25a834751 118 curve25519_key* key, int endian);
wolfSSL 11:cee25a834751 119
wolfSSL 11:cee25a834751 120 WOLFSSL_API
wolfSSL 11:cee25a834751 121 int wc_curve25519_export_public(curve25519_key* key, byte* out, word32* outLen);
wolfSSL 11:cee25a834751 122 WOLFSSL_API
wolfSSL 11:cee25a834751 123 int wc_curve25519_export_public_ex(curve25519_key* key, byte* out,
wolfSSL 11:cee25a834751 124 word32* outLen, int endian);
wolfSSL 11:cee25a834751 125
wolfSSL 11:cee25a834751 126 WOLFSSL_API
wolfSSL 11:cee25a834751 127 int wc_curve25519_export_key_raw(curve25519_key* key,
wolfSSL 11:cee25a834751 128 byte* priv, word32 *privSz,
wolfSSL 11:cee25a834751 129 byte* pub, word32 *pubSz);
wolfSSL 11:cee25a834751 130 WOLFSSL_API
wolfSSL 11:cee25a834751 131 int wc_curve25519_export_key_raw_ex(curve25519_key* key,
wolfSSL 11:cee25a834751 132 byte* priv, word32 *privSz,
wolfSSL 11:cee25a834751 133 byte* pub, word32 *pubSz,
wolfSSL 11:cee25a834751 134 int endian);
wolfSSL 11:cee25a834751 135 /* size helper */
wolfSSL 11:cee25a834751 136 WOLFSSL_API
wolfSSL 11:cee25a834751 137 int wc_curve25519_size(curve25519_key* key);
wolfSSL 11:cee25a834751 138
wolfSSL 11:cee25a834751 139 #ifdef __cplusplus
wolfSSL 11:cee25a834751 140 } /* extern "C" */
wolfSSL 11:cee25a834751 141 #endif
wolfSSL 11:cee25a834751 142
wolfSSL 11:cee25a834751 143 #endif /* HAVE_CURVE25519 */
wolfSSL 11:cee25a834751 144 #endif /* WOLF_CRYPT_CURVE25519_H */
wolfSSL 11:cee25a834751 145
wolfSSL 11:cee25a834751 146