[388] | 1 | /* ed25519.h
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| 2 | *
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| 3 | * Copyright (C) 2006-2017 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 | /*!
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| 23 | \file wolfssl/wolfcrypt/ed25519.h
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| 24 | */
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| 25 |
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| 26 |
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| 27 | #ifndef WOLF_CRYPT_ED25519_H
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| 28 | #define WOLF_CRYPT_ED25519_H
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| 29 |
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| 30 | #include <wolfssl/wolfcrypt/types.h>
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| 31 |
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| 32 | #ifdef HAVE_ED25519
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| 33 |
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| 34 | #include <wolfssl/wolfcrypt/fe_operations.h>
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| 35 | #include <wolfssl/wolfcrypt/ge_operations.h>
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| 36 | #include <wolfssl/wolfcrypt/random.h>
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| 37 | #include <wolfssl/wolfcrypt/sha512.h>
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| 38 |
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| 39 | #ifdef WOLFSSL_ASYNC_CRYPT
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| 40 | #include <wolfssl/wolfcrypt/async.h>
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| 41 | #endif
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| 42 |
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| 43 | #ifdef __cplusplus
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| 44 | extern "C" {
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| 45 | #endif
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| 46 |
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| 47 |
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| 48 | /* info about EdDSA curve specifically ed25519, defined as an elliptic curve
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| 49 | over GF(p) */
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| 50 | /*
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| 51 | 32, key size
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| 52 | "ED25519", curve name
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| 53 | "2^255-19", prime number
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| 54 | "SHA512", hash function
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| 55 | "-121665/121666", value of d
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| 56 | */
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| 57 |
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| 58 | #define ED25519_KEY_SIZE 32 /* private key only */
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| 59 | #define ED25519_SIG_SIZE 64
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| 60 |
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| 61 | #define ED25519_PUB_KEY_SIZE 32 /* compressed */
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| 62 | /* both private and public key */
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| 63 | #define ED25519_PRV_KEY_SIZE (ED25519_PUB_KEY_SIZE+ED25519_KEY_SIZE)
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| 64 |
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| 65 |
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| 66 | #ifndef WC_ED25519KEY_TYPE_DEFINED
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| 67 | typedef struct ed25519_key ed25519_key;
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| 68 | #define WC_ED25519KEY_TYPE_DEFINED
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| 69 | #endif
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| 70 |
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| 71 | /* An ED25519 Key */
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| 72 | struct ed25519_key {
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| 73 | byte p[ED25519_PUB_KEY_SIZE]; /* compressed public key */
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| 74 | byte k[ED25519_PRV_KEY_SIZE]; /* private key : 32 secret -- 32 public */
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| 75 | #ifdef FREESCALE_LTC_ECC
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| 76 | /* uncompressed point coordinates */
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| 77 | byte pointX[ED25519_KEY_SIZE]; /* recovered X coordinate */
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| 78 | byte pointY[ED25519_KEY_SIZE]; /* Y coordinate is the public key with The most significant bit of the final octet always zero. */
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| 79 | #endif
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| 80 | word16 pubKeySet:1;
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| 81 | #ifdef WOLFSSL_ASYNC_CRYPT
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| 82 | WC_ASYNC_DEV asyncDev;
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| 83 | #endif
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| 84 | };
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| 85 |
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| 86 |
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| 87 | WOLFSSL_API
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| 88 | int wc_ed25519_make_key(WC_RNG* rng, int keysize, ed25519_key* key);
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| 89 | WOLFSSL_API
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| 90 | int wc_ed25519_sign_msg(const byte* in, word32 inlen, byte* out,
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| 91 | word32 *outlen, ed25519_key* key);
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| 92 | WOLFSSL_API
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| 93 | int wc_ed25519_verify_msg(const byte* sig, word32 siglen, const byte* msg,
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| 94 | word32 msglen, int* stat, ed25519_key* key);
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| 95 | WOLFSSL_API
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| 96 | int wc_ed25519_init(ed25519_key* key);
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| 97 | WOLFSSL_API
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| 98 | void wc_ed25519_free(ed25519_key* key);
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| 99 | WOLFSSL_API
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| 100 | int wc_ed25519_import_public(const byte* in, word32 inLen, ed25519_key* key);
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| 101 | WOLFSSL_API
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| 102 | int wc_ed25519_import_private_only(const byte* priv, word32 privSz,
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| 103 | ed25519_key* key);
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| 104 | WOLFSSL_API
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| 105 | int wc_ed25519_import_private_key(const byte* priv, word32 privSz,
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| 106 | const byte* pub, word32 pubSz, ed25519_key* key);
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| 107 | WOLFSSL_API
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| 108 | int wc_ed25519_export_public(ed25519_key*, byte* out, word32* outLen);
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| 109 | WOLFSSL_API
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| 110 | int wc_ed25519_export_private_only(ed25519_key* key, byte* out, word32* outLen);
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| 111 | WOLFSSL_API
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| 112 | int wc_ed25519_export_private(ed25519_key* key, byte* out, word32* outLen);
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| 113 | WOLFSSL_API
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| 114 | int wc_ed25519_export_key(ed25519_key* key,
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| 115 | byte* priv, word32 *privSz,
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| 116 | byte* pub, word32 *pubSz);
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| 117 |
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| 118 | int wc_ed25519_check_key(ed25519_key* key);
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| 119 |
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| 120 | /* size helper */
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| 121 | WOLFSSL_API
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| 122 | int wc_ed25519_size(ed25519_key* key);
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| 123 | WOLFSSL_API
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| 124 | int wc_ed25519_priv_size(ed25519_key* key);
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| 125 | WOLFSSL_API
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| 126 | int wc_ed25519_pub_size(ed25519_key* key);
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| 127 | WOLFSSL_API
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| 128 | int wc_ed25519_sig_size(ed25519_key* key);
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| 129 |
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| 130 | #ifdef __cplusplus
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| 131 | } /* extern "C" */
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| 132 | #endif
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| 133 |
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| 134 | #endif /* HAVE_ED25519 */
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| 135 | #endif /* WOLF_CRYPT_ED25519_H */
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| 136 |
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