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      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