/* Copyright (c) 2014, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#ifndef OPENSSL_HEADER_CHACHA_H
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#define OPENSSL_HEADER_CHACHA_H
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#include <openssl/base.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// CRYPTO_chacha_20 encrypts |in_len| bytes from |in| with the given key and
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// nonce and writes the result to |out|. If |in| and |out| alias, they must be
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// equal. The initial block counter is specified by |counter|.
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OPENSSL_EXPORT void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in,
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size_t in_len, const uint8_t key[32],
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const uint8_t nonce[12], uint32_t counter);
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#if defined(__cplusplus)
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} // extern C
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#endif
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#endif // OPENSSL_HEADER_CHACHA_H
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