107 lines
3.7 KiB
C
107 lines
3.7 KiB
C
/* $NetBSD: nist_ctr_drbg.h,v 1.2 2011/11/21 23:48:52 macallan Exp $ */
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/*-
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* Copyright (c) 2011 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 Thor Lancelot Simon.
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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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/*
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* Copyright (c) 2007 Henric Jungheim <software@henric.info>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* NIST SP 800-90 CTR_DRBG (Random Number Generator)
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*/
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#ifndef NIST_CTR_DRBG_H
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#define NIST_CTR_DRBG_H
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#include <crypto/nist_ctr_drbg/nist_ctr_drbg_config.h>
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#define NIST_BLOCK_SEEDLEN (NIST_BLOCK_KEYLEN + NIST_BLOCK_OUTLEN)
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#define NIST_BLOCK_SEEDLEN_BYTES (NIST_BLOCK_SEEDLEN / 8)
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#define NIST_BLOCK_SEEDLEN_INTS (NIST_BLOCK_SEEDLEN_BYTES / sizeof(int))
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typedef struct {
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unsigned int reseed_counter;
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NIST_Key ctx;
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unsigned int V[NIST_BLOCK_OUTLEN_INTS] __attribute__ ((aligned(8)));
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} NIST_CTR_DRBG;
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int nist_ctr_initialize(void);
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int nist_ctr_drbg_generate(NIST_CTR_DRBG *, void *, int, const void *, int);
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int nist_ctr_drbg_reseed(NIST_CTR_DRBG *, const void *, int,
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const void *, int);
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int nist_ctr_drbg_instantiate(NIST_CTR_DRBG *, const void *, int,
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const void *, int, const void *, int);
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int nist_ctr_drbg_destroy(NIST_CTR_DRBG *);
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#ifdef NIST_ZEROIZE
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#define nist_zeroize(p, s) memset(p, 0, s)
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#else
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#define nist_zeroize(p, s) do { } while(0)
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#endif
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#ifdef NIST_IS_LITTLE_ENDIAN /* Faster, as secure, won't pass KAT */
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#define NIST_HTONL(x) (x)
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#define NIST_NTOHL(x) (x)
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#else
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static inline unsigned long
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NIST_HTONL(unsigned long x)
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{
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switch(sizeof(long)) {
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case 4:
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return be32toh(x);
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default:
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return be64toh(x);
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{
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}
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static inline unsigned long
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NIST_NTOHL(unsigned long x)
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{
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switch(sizeof(long)) {
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case 4:
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return htobe32(x);
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default:
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return htobe64(x);
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}
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#endif
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#endif /* NIST_CTR_DRBG_H */
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