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59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
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/* $OpenBSD: chacha.h,v 1.8 2019/01/22 00:59:21 dlg Exp $ */
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/*
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* Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
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*
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* Permission to use, copy, modify, and 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
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* ANY 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
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef HEADER_CHACHA_H
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#define HEADER_CHACHA_H
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#include <openssl/opensslconf.h>
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#if defined(OPENSSL_NO_CHACHA)
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#error ChaCha is disabled.
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#endif
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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unsigned int input[16];
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unsigned char ks[64];
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unsigned char unused;
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} ChaCha_ctx;
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void ChaCha_set_key(ChaCha_ctx *ctx, const unsigned char *key,
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unsigned int keybits);
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void ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
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const unsigned char *counter);
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void ChaCha(ChaCha_ctx *ctx, unsigned char *out, const unsigned char *in,
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size_t len);
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void CRYPTO_chacha_20(unsigned char *out, const unsigned char *in, size_t len,
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const unsigned char key[32], const unsigned char iv[8], uint64_t counter);
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void CRYPTO_xchacha_20(unsigned char *out, const unsigned char *in, size_t len,
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const unsigned char key[32], const unsigned char iv[24]);
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void CRYPTO_hchacha_20(unsigned char out[32],
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const unsigned char key[32], const unsigned char iv[16]);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HEADER_CHACHA_H */
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