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      1 /*	$NetBSD: chacha_impl.h,v 1.2 2025/12/22 16:35:34 nia Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2020 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef	_SYS_CRYPTO_CHACHA_CHACHA_IMPL_H
     30 #define	_SYS_CRYPTO_CHACHA_CHACHA_IMPL_H
     31 
     32 #ifdef _KERNEL
     33 #include <sys/types.h>
     34 #include <sys/systm.h>
     35 #include <sys/endian.h>
     36 #else
     37 #include <stdint.h>
     38 #include <string.h>
     39 #include <endian.h>
     40 #endif
     41 
     42 #include <crypto/chacha/chacha.h>
     43 
     44 struct chacha_impl {
     45 	const char *ci_name;
     46 	int	(*ci_probe)(void);
     47 	void	(*ci_chacha_core)(uint8_t[restrict static CHACHA_CORE_OUTBYTES],
     48 		    const uint8_t[static CHACHA_CORE_INBYTES],
     49 		    const uint8_t[static CHACHA_CORE_KEYBYTES],
     50 		    const uint8_t[static CHACHA_CORE_CONSTBYTES],
     51 		    unsigned);
     52 	void	(*ci_hchacha)(uint8_t[restrict static HCHACHA_OUTBYTES],
     53 		    const uint8_t[static HCHACHA_INBYTES],
     54 		    const uint8_t[static HCHACHA_KEYBYTES],
     55 		    const uint8_t[static HCHACHA_CONSTBYTES],
     56 		    unsigned);
     57 	void	(*ci_chacha_stream)(uint8_t *restrict, size_t,
     58 		    uint32_t,
     59 		    const uint8_t[static CHACHA_STREAM_NONCEBYTES],
     60 		    const uint8_t[static CHACHA_STREAM_KEYBYTES],
     61 		    unsigned);
     62 	void	(*ci_chacha_stream_xor)(uint8_t *, const uint8_t *,
     63 		    size_t,
     64 		    uint32_t,
     65 		    const uint8_t[static CHACHA_STREAM_NONCEBYTES],
     66 		    const uint8_t[static CHACHA_STREAM_KEYBYTES],
     67 		    unsigned);
     68 	void	(*ci_xchacha_stream)(uint8_t *restrict, size_t,
     69 		    uint32_t,
     70 		    const uint8_t[static XCHACHA_STREAM_NONCEBYTES],
     71 		    const uint8_t[static XCHACHA_STREAM_KEYBYTES],
     72 		    unsigned);
     73 	void	(*ci_xchacha_stream_xor)(uint8_t *, const uint8_t *,
     74 		    size_t,
     75 		    uint32_t,
     76 		    const uint8_t[static XCHACHA_STREAM_NONCEBYTES],
     77 		    const uint8_t[static XCHACHA_STREAM_KEYBYTES],
     78 		    unsigned);
     79 };
     80 
     81 int	chacha_selftest(const struct chacha_impl *);
     82 
     83 void	chacha_md_init(const struct chacha_impl *);
     84 
     85 #endif	/* _SYS_CRYPTO_CHACHA_CHACHA_IMPL_H */
     86