ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
dir: /third_party/boringssl/src/crypto/chacha/internal.h/
/* Copyright (c) 2018, 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_INTERNAL
#define OPENSSL_HEADER_CHACHA_INTERNAL
#include <openssl/base.h>
#if defined(__cplusplus)
extern "C" {
#endif
// CRYPTO_hchacha20 computes the HChaCha20 function, which should only be used
// as part of XChaCha20.
void CRYPTO_hchacha20(uint8_t out[32], const uint8_t key[32],
const uint8_t nonce[16]);
#if !defined(OPENSSL_NO_ASM) && \
(defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \
defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
#define CHACHA20_ASM
// ChaCha20_ctr32 is defined in asm/chacha-*.pl.
void ChaCha20_ctr32(uint8_t *out, const uint8_t *in, size_t in_len,
const uint32_t key[8], const uint32_t counter[4]);
#endif
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_CHACHA_INTERNAL