56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/* chacha.h
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*
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* Copyright (C) 2006-2014 wolfSSL Inc.
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*
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* This file is part of CyaSSL.
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*
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* CyaSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* CyaSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef CHACHA_H
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#define CHACHA_H
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#include "types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum {
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CHACHA_ENC_TYPE = 7 /* cipher unique type */
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};
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typedef struct ChaCha {
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word32 X[16]; /* state of cipher */
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} ChaCha;
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CYASSL_API int Chacha_Process(ChaCha* ctx, byte* cipher, const byte* plain,
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word32 msglen);
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CYASSL_API int Chacha_SetKey(ChaCha* ctx, const byte* key, word32 keySz);
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/**
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* IV(nonce) changes with each record
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* counter is for what value the block counter should start ... usually 0
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*/
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CYASSL_API int Chacha_SetIV(ChaCha* ctx, const byte* inIv, word32 counter);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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