1bd8919011
C99 allows array function parameters to use the static keyword for their sizes. This tells the compiler that the parameter will have at least the specified size, and calling code will fail to compile if that guarantee is not met. However, this syntax is not legal in C++. This commit reverts r300824, which worked around the problem for sys/sys/md5.h only, and introduces a new macro: min_size(). min_size(x) can be used in headers as a static array size, but will still compile in C++ mode. Reviewed by: cem, ed MFC after: 4 weeks Sponsored by: Spectra Logic Corp Differential Revision: https://reviews.freebsd.org/D8277
73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
/* $FreeBSD$ */
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/* $KAME: sha1.h,v 1.5 2000/03/27 04:36:23 sumikawa Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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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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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
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* based on: http://csrc.nist.gov/fips/fip180-1.txt
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* implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
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*/
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#ifndef _CRYPTO_SHA1_H_
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#define _CRYPTO_SHA1_H_
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struct sha1_ctxt {
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union {
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u_int8_t b8[20];
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u_int32_t b32[5];
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} h;
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union {
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u_int8_t b8[8];
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u_int64_t b64[1];
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} c;
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union {
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u_int8_t b8[64];
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u_int32_t b32[16];
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} m;
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u_int8_t count;
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};
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typedef struct sha1_ctxt SHA1_CTX;
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#define SHA1_RESULTLEN (160/8)
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#ifdef _KERNEL
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extern void sha1_init(struct sha1_ctxt *);
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extern void sha1_pad(struct sha1_ctxt *);
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extern void sha1_loop(struct sha1_ctxt *, const u_int8_t *, size_t);
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extern void sha1_result(struct sha1_ctxt *, char[__min_size(SHA1_RESULTLEN)]);
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/* compatibilty with other SHA1 source codes */
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#define SHA1Init(x) sha1_init((x))
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#define SHA1Update(x, y, z) sha1_loop((x), (y), (z))
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#define SHA1Final(x, y) sha1_result((y), (x))
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#endif /* _KERNEL */
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#endif /*_CRYPTO_SHA1_H_*/
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