xref: /netbsd-src/sys/crypto/chacha/arch/arm/chacha_neon.h (revision 7a8eb9a111cf8d21d31bb9621d44cd561860da11)
1 /*	$NetBSD: chacha_neon.h,v 1.3 2020/07/28 20:08:48 riastradh 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_ARCH_ARM_CHACHA_NEON_H
30 #define	_SYS_CRYPTO_CHACHA_ARCH_ARM_CHACHA_NEON_H
31 
32 #include <sys/types.h>
33 
34 #include <crypto/chacha/chacha_impl.h>
35 
36 void	chacha_core_neon(uint8_t[restrict static 64],
37 	    const uint8_t[static 16],
38 	    const uint8_t[static 32],
39 	    const uint8_t[static 16],
40 	    unsigned);
41 void	hchacha_neon(uint8_t[restrict static 32],
42 	    const uint8_t[static 16],
43 	    const uint8_t[static 32],
44 	    const uint8_t[static 16],
45 	    unsigned);
46 void	chacha_stream_neon(uint8_t *restrict, size_t,
47 	    uint32_t,
48 	    const uint8_t[static 12],
49 	    const uint8_t[static 32],
50 	    unsigned);
51 void	chacha_stream_xor_neon(uint8_t *, const uint8_t *, size_t,
52 	    uint32_t,
53 	    const uint8_t[static 12],
54 	    const uint8_t[static 32],
55 	    unsigned);
56 void	xchacha_stream_neon(uint8_t *restrict, size_t,
57 	    uint32_t,
58 	    const uint8_t[static 24],
59 	    const uint8_t[static 32],
60 	    unsigned);
61 void	xchacha_stream_xor_neon(uint8_t *, const uint8_t *, size_t,
62 	    uint32_t,
63 	    const uint8_t[static 24],
64 	    const uint8_t[static 32],
65 	    unsigned);
66 
67 /* Assembly helpers */
68 void	chacha_stream256_neon(uint8_t[restrict static 256], uint32_t,
69 	    const uint8_t[static 12],
70 	    const uint8_t[static 32],
71 	    const uint8_t[static 16],
72 	    unsigned);
73 void	chacha_stream_xor256_neon(uint8_t[restrict static 256],
74 	    const uint8_t[static 256],
75 	    uint32_t,
76 	    const uint8_t[static 12],
77 	    const uint8_t[static 32],
78 	    const uint8_t[static 16],
79 	    unsigned);
80 
81 extern const struct chacha_impl chacha_neon_impl;
82 
83 #endif	/* _SYS_CRYPTO_CHACHA_ARCH_ARM_CHACHA_NEON_H */
84