1 1.1 riastrad /* $NetBSD: entpool.h,v 1.1 2020/04/30 03:28:19 riastradh Exp $ */ 2 1.1 riastrad 3 1.1 riastrad /*- 4 1.1 riastrad * Copyright (c) 2019 The NetBSD Foundation, Inc. 5 1.1 riastrad * All rights reserved. 6 1.1 riastrad * 7 1.1 riastrad * This code is derived from software contributed to The NetBSD Foundation 8 1.1 riastrad * by Taylor R. Campbell. 9 1.1 riastrad * 10 1.1 riastrad * Redistribution and use in source and binary forms, with or without 11 1.1 riastrad * modification, are permitted provided that the following conditions 12 1.1 riastrad * are met: 13 1.1 riastrad * 1. Redistributions of source code must retain the above copyright 14 1.1 riastrad * notice, this list of conditions and the following disclaimer. 15 1.1 riastrad * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 riastrad * notice, this list of conditions and the following disclaimer in the 17 1.1 riastrad * documentation and/or other materials provided with the distribution. 18 1.1 riastrad * 19 1.1 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1 riastrad * POSSIBILITY OF SUCH DAMAGE. 30 1.1 riastrad */ 31 1.1 riastrad 32 1.1 riastrad #ifndef ENTPOOL_H 33 1.1 riastrad #define ENTPOOL_H 34 1.1 riastrad 35 1.1 riastrad #include <sys/types.h> 36 1.1 riastrad #include <sys/endian.h> 37 1.1 riastrad 38 1.1 riastrad #if defined(_KERNEL) || defined(_STANDALONE) 39 1.1 riastrad #include <sys/stdbool.h> 40 1.1 riastrad #else 41 1.1 riastrad #include <stdbool.h> 42 1.1 riastrad #endif 43 1.1 riastrad 44 1.1 riastrad #if ENTPOOL_SMALL 45 1.1 riastrad #define ENTPOOL_HEADER <gimli.h> 46 1.1 riastrad #define ENTPOOL_PERMUTE gimli 47 1.1 riastrad #define ENTPOOL_SIZE 48 48 1.1 riastrad #define ENTPOOL_WORD uint32_t 49 1.1 riastrad #define ENTPOOL_WTOH le32toh 50 1.1 riastrad #define ENTPOOL_HTOW htole32 51 1.1 riastrad #define ENTPOOL_SECURITY 16 52 1.1 riastrad #else 53 1.1 riastrad #define ENTPOOL_HEADER <keccak.h> 54 1.1 riastrad #define ENTPOOL_PERMUTE keccakf1600 55 1.1 riastrad #define ENTPOOL_SIZE 200 56 1.1 riastrad #define ENTPOOL_WORD uint64_t 57 1.1 riastrad #define ENTPOOL_WTOH le64toh 58 1.1 riastrad #define ENTPOOL_HTOW htole64 59 1.1 riastrad #define ENTPOOL_SECURITY 16 60 1.1 riastrad #endif 61 1.1 riastrad 62 1.1 riastrad #define ENTPOOL_CAPACITY (2*ENTPOOL_SECURITY) 63 1.1 riastrad #define ENTPOOL_RATE (ENTPOOL_SIZE - ENTPOOL_CAPACITY) 64 1.1 riastrad 65 1.1 riastrad struct entpool { 66 1.1 riastrad union { 67 1.1 riastrad uint8_t u8[ENTPOOL_SIZE]; 68 1.1 riastrad ENTPOOL_WORD w[ENTPOOL_SIZE/sizeof(ENTPOOL_WORD)]; 69 1.1 riastrad } s; 70 1.1 riastrad unsigned i; 71 1.1 riastrad }; 72 1.1 riastrad 73 1.1 riastrad int entpool_selftest(void); 74 1.1 riastrad void entpool_enter(struct entpool *, const void *, size_t); 75 1.1 riastrad bool entpool_enter_nostir(struct entpool *, const void *, size_t); 76 1.1 riastrad void entpool_stir(struct entpool *); 77 1.1 riastrad void entpool_extract(struct entpool *, void *, size_t); 78 1.1 riastrad 79 1.1 riastrad #endif /* ENTPOOL_H */ 80