| /* 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 |