1 /* $OpenBSD: chacha.h,v 1.6 2014/07/25 14:04:51 jsing Exp $ */
3 * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #ifndef HEADER_CHACHA_H
19 #define HEADER_CHACHA_H
21 #include <openssl/opensslconf.h>
23 #if defined(OPENSSL_NO_CHACHA)
24 #error ChaCha is disabled.
35 unsigned int input[16];
40 void ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key,
41 unsigned int keybits);
42 void ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
43 const unsigned char *counter);
44 void ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in,
47 void CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
48 const unsigned char key[32], const unsigned char iv[8], uint64_t counter);
54 #endif /* HEADER_CHACHA_H */