wolf SSL / wolfSSL

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

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wolfssl/wolfcrypt/chacha.h@4:1b0d80432c79, 2016-04-28 (annotated)

Committer:
wolfSSL
Date:
Thu Apr 28 00:57:21 2016 +0000
Revision:
4:1b0d80432c79
wolfSSL 3.9.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wolfSSL 4:1b0d80432c79 1 /* chacha.h
wolfSSL 4:1b0d80432c79 2 *
wolfSSL 4:1b0d80432c79 3 * Copyright (C) 2006-2016 wolfSSL Inc.
wolfSSL 4:1b0d80432c79 4 *
wolfSSL 4:1b0d80432c79 5 * This file is part of wolfSSL.
wolfSSL 4:1b0d80432c79 6 *
wolfSSL 4:1b0d80432c79 7 * wolfSSL is free software; you can redistribute it and/or modify
wolfSSL 4:1b0d80432c79 8 * it under the terms of the GNU General Public License as published by
wolfSSL 4:1b0d80432c79 9 * the Free Software Foundation; either version 2 of the License, or
wolfSSL 4:1b0d80432c79 10 * (at your option) any later version.
wolfSSL 4:1b0d80432c79 11 *
wolfSSL 4:1b0d80432c79 12 * wolfSSL is distributed in the hope that it will be useful,
wolfSSL 4:1b0d80432c79 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
wolfSSL 4:1b0d80432c79 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wolfSSL 4:1b0d80432c79 15 * GNU General Public License for more details.
wolfSSL 4:1b0d80432c79 16 *
wolfSSL 4:1b0d80432c79 17 * You should have received a copy of the GNU General Public License
wolfSSL 4:1b0d80432c79 18 * along with this program; if not, write to the Free Software
wolfSSL 4:1b0d80432c79 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
wolfSSL 4:1b0d80432c79 20 */
wolfSSL 4:1b0d80432c79 21
wolfSSL 4:1b0d80432c79 22
wolfSSL 4:1b0d80432c79 23 #ifndef WOLF_CRYPT_CHACHA_H
wolfSSL 4:1b0d80432c79 24 #define WOLF_CRYPT_CHACHA_H
wolfSSL 4:1b0d80432c79 25
wolfSSL 4:1b0d80432c79 26 #include <wolfssl/wolfcrypt/types.h>
wolfSSL 4:1b0d80432c79 27
wolfSSL 4:1b0d80432c79 28 #ifdef HAVE_CHACHA
wolfSSL 4:1b0d80432c79 29
wolfSSL 4:1b0d80432c79 30 #ifdef __cplusplus
wolfSSL 4:1b0d80432c79 31 extern "C" {
wolfSSL 4:1b0d80432c79 32 #endif
wolfSSL 4:1b0d80432c79 33
wolfSSL 4:1b0d80432c79 34 enum {
wolfSSL 4:1b0d80432c79 35 CHACHA_ENC_TYPE = 7 /* cipher unique type */
wolfSSL 4:1b0d80432c79 36 };
wolfSSL 4:1b0d80432c79 37
wolfSSL 4:1b0d80432c79 38 typedef struct ChaCha {
wolfSSL 4:1b0d80432c79 39 word32 X[16]; /* state of cipher */
wolfSSL 4:1b0d80432c79 40 } ChaCha;
wolfSSL 4:1b0d80432c79 41
wolfSSL 4:1b0d80432c79 42 /**
wolfSSL 4:1b0d80432c79 43 * IV(nonce) changes with each record
wolfSSL 4:1b0d80432c79 44 * counter is for what value the block counter should start ... usually 0
wolfSSL 4:1b0d80432c79 45 */
wolfSSL 4:1b0d80432c79 46 WOLFSSL_API int wc_Chacha_SetIV(ChaCha* ctx, const byte* inIv, word32 counter);
wolfSSL 4:1b0d80432c79 47
wolfSSL 4:1b0d80432c79 48 WOLFSSL_API int wc_Chacha_Process(ChaCha* ctx, byte* cipher, const byte* plain,
wolfSSL 4:1b0d80432c79 49 word32 msglen);
wolfSSL 4:1b0d80432c79 50 WOLFSSL_API int wc_Chacha_SetKey(ChaCha* ctx, const byte* key, word32 keySz);
wolfSSL 4:1b0d80432c79 51
wolfSSL 4:1b0d80432c79 52 #ifdef __cplusplus
wolfSSL 4:1b0d80432c79 53 } /* extern "C" */
wolfSSL 4:1b0d80432c79 54 #endif
wolfSSL 4:1b0d80432c79 55
wolfSSL 4:1b0d80432c79 56 #endif /* HAVE_CHACHA */
wolfSSL 4:1b0d80432c79 57 #endif /* WOLF_CRYPT_CHACHA_H */
wolfSSL 4:1b0d80432c79 58
wolfSSL 4:1b0d80432c79 59