80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/* $NetBSD: entpool.h,v 1.1 2020/04/30 03:28:19 riastradh Exp $ */
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/*-
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* Copyright (c) 2019 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Taylor R. Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ENTPOOL_H
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#define ENTPOOL_H
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#include <sys/types.h>
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#include <sys/endian.h>
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#if defined(_KERNEL) || defined(_STANDALONE)
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#include <sys/stdbool.h>
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#else
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#include <stdbool.h>
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#endif
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#if ENTPOOL_SMALL
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#define ENTPOOL_HEADER <gimli.h>
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#define ENTPOOL_PERMUTE gimli
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#define ENTPOOL_SIZE 48
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#define ENTPOOL_WORD uint32_t
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#define ENTPOOL_WTOH le32toh
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#define ENTPOOL_HTOW htole32
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#define ENTPOOL_SECURITY 16
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#else
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#define ENTPOOL_HEADER <keccak.h>
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#define ENTPOOL_PERMUTE keccakf1600
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#define ENTPOOL_SIZE 200
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#define ENTPOOL_WORD uint64_t
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#define ENTPOOL_WTOH le64toh
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#define ENTPOOL_HTOW htole64
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#define ENTPOOL_SECURITY 16
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#endif
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#define ENTPOOL_CAPACITY (2*ENTPOOL_SECURITY)
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#define ENTPOOL_RATE (ENTPOOL_SIZE - ENTPOOL_CAPACITY)
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struct entpool {
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union {
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uint8_t u8[ENTPOOL_SIZE];
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ENTPOOL_WORD w[ENTPOOL_SIZE/sizeof(ENTPOOL_WORD)];
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} s;
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unsigned i;
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};
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int entpool_selftest(void);
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void entpool_enter(struct entpool *, const void *, size_t);
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bool entpool_enter_nostir(struct entpool *, const void *, size_t);
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void entpool_stir(struct entpool *);
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void entpool_extract(struct entpool *, void *, size_t);
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#endif /* ENTPOOL_H */
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