|
|
|
|
/* Copyright (c) 2014, Google Inc.
|
|
|
|
|
*
|
|
|
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
|
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
|
|
|
* copyright notice and this permission notice appear in all copies.
|
|
|
|
|
*
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
|
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
|
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
|
|
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
|
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
|
|
|
|
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
|
|
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
|
|
|
|
|
|
|
|
|
|
#ifndef OPENSSL_HEADER_CHACHA_H
|
|
|
|
|
#define OPENSSL_HEADER_CHACHA_H
|
|
|
|
|
|
|
|
|
|
#include <openssl/base.h>
|
|
|
|
|
|
|
|
|
|
#if defined(__cplusplus)
|
|
|
|
|
extern "C" {
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
// ChaCha20.
|
|
|
|
|
//
|
|
|
|
|
// ChaCha20 is a stream cipher. See https://tools.ietf.org/html/rfc8439.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// CRYPTO_chacha_20 encrypts |in_len| bytes from |in| with the given key and
|
|
|
|
|
// nonce and writes the result to |out|. If |in| and |out| alias, they must be
|
|
|
|
|
// equal. The initial block counter is specified by |counter|.
|
|
|
|
|
OPENSSL_EXPORT void CRYPTO_chacha_20(uint8_t *out, const uint8_t *in,
|
|
|
|
|
size_t in_len, const uint8_t key[32],
|
|
|
|
|
const uint8_t nonce[12], uint32_t counter);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#if defined(__cplusplus)
|
|
|
|
|
} // extern C
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#endif // OPENSSL_HEADER_CHACHA_H
|
