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51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/*
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* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#ifndef _ZINC_CHACHA20POLY1305_H
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#define _ZINC_CHACHA20POLY1305_H
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#include <linux/simd.h>
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#include <linux/types.h>
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struct scatterlist;
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enum chacha20poly1305_lengths {
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XCHACHA20POLY1305_NONCE_SIZE = 24,
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CHACHA20POLY1305_KEY_SIZE = 32,
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CHACHA20POLY1305_AUTHTAG_SIZE = 16
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};
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void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
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const u8 *ad, const size_t ad_len,
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const u64 nonce,
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const u8 key[CHACHA20POLY1305_KEY_SIZE]);
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bool __must_check chacha20poly1305_encrypt_sg_inplace(
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struct scatterlist *src, const size_t src_len, const u8 *ad,
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const size_t ad_len, const u64 nonce,
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const u8 key[CHACHA20POLY1305_KEY_SIZE], simd_context_t *simd_context);
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bool __must_check
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chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
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const u8 *ad, const size_t ad_len, const u64 nonce,
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const u8 key[CHACHA20POLY1305_KEY_SIZE]);
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bool __must_check chacha20poly1305_decrypt_sg_inplace(
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struct scatterlist *src, size_t src_len, const u8 *ad,
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const size_t ad_len, const u64 nonce,
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const u8 key[CHACHA20POLY1305_KEY_SIZE], simd_context_t *simd_context);
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void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
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const u8 *ad, const size_t ad_len,
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const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
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const u8 key[CHACHA20POLY1305_KEY_SIZE]);
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bool __must_check xchacha20poly1305_decrypt(
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u8 *dst, const u8 *src, const size_t src_len, const u8 *ad,
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const size_t ad_len, const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
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const u8 key[CHACHA20POLY1305_KEY_SIZE]);
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#endif /* _ZINC_CHACHA20POLY1305_H */
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