1 /* $NetBSD: chacha.h,v 1.1 2020/07/25 22:46:34 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_CHACHA_H 30 #define _SYS_CRYPTO_CHACHA_CHACHA_H 31 32 #include <sys/types.h> 33 34 #define CHACHA_KEYBYTES 32 35 36 #define CHACHA_CORE_KEYBYTES CHACHA_KEYBYTES 37 #define CHACHA_CORE_INBYTES 16 38 #define CHACHA_CORE_CONSTBYTES 16 39 #define CHACHA_CORE_OUTBYTES 64 40 41 #define HCHACHA_KEYBYTES CHACHA_KEYBYTES 42 #define HCHACHA_INBYTES 16 43 #define HCHACHA_CONSTBYTES 16 44 #define HCHACHA_OUTBYTES 32 45 46 #define CHACHA_STREAM_KEYBYTES CHACHA_KEYBYTES 47 #define CHACHA_STREAM_NONCEBYTES 12 48 49 #define XCHACHA_STREAM_KEYBYTES CHACHA_KEYBYTES 50 #define XCHACHA_STREAM_NONCEBYTES 24 51 52 extern const uint8_t chacha_const32[16]; 53 54 void chacha_core(uint8_t[restrict static CHACHA_CORE_OUTBYTES], 55 const uint8_t[static CHACHA_CORE_INBYTES], 56 const uint8_t[static CHACHA_CORE_KEYBYTES], 57 const uint8_t[static CHACHA_CORE_CONSTBYTES], 58 unsigned); 59 void hchacha(uint8_t[restrict static HCHACHA_OUTBYTES], 60 const uint8_t[static HCHACHA_INBYTES], 61 const uint8_t[static HCHACHA_KEYBYTES], 62 const uint8_t[static HCHACHA_CONSTBYTES], 63 unsigned); 64 void chacha_stream(uint8_t *restrict, size_t, 65 uint32_t, 66 const uint8_t[static CHACHA_STREAM_NONCEBYTES], 67 const uint8_t[static CHACHA_STREAM_KEYBYTES], 68 unsigned); 69 void chacha_stream_xor(uint8_t *, const uint8_t *, size_t, 70 uint32_t, 71 const uint8_t[static CHACHA_STREAM_NONCEBYTES], 72 const uint8_t[static CHACHA_STREAM_KEYBYTES], 73 unsigned); 74 void xchacha_stream(uint8_t *restrict, size_t, 75 uint32_t, 76 const uint8_t[static XCHACHA_STREAM_NONCEBYTES], 77 const uint8_t[static XCHACHA_STREAM_KEYBYTES], 78 unsigned); 79 void xchacha_stream_xor(uint8_t *, const uint8_t *, size_t, 80 uint32_t, 81 const uint8_t[static XCHACHA_STREAM_NONCEBYTES], 82 const uint8_t[static XCHACHA_STREAM_KEYBYTES], 83 unsigned); 84 85 #endif /* _SYS_CRYPTO_CHACHA_CHACHA_H */ 86