forked from Imagelibrary/rtems
48f7979f5d
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
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/*-
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* Copyright 2005 Colin Percival
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef _SHA256_H_
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#define _SHA256_H_
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#ifndef _KERNEL
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#include <sys/types.h>
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#endif
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#define SHA256_BLOCK_LENGTH 64
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#define SHA256_DIGEST_LENGTH 32
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#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
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typedef struct SHA256Context {
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uint32_t state[8];
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uint64_t count;
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uint8_t buf[SHA256_BLOCK_LENGTH];
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} SHA256_CTX;
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__BEGIN_DECLS
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void SHA256_Init(SHA256_CTX *);
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void SHA256_Update(SHA256_CTX *, const void *, size_t);
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void SHA256_Final(unsigned char [__min_size(SHA256_DIGEST_LENGTH)],
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SHA256_CTX *);
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#ifndef _KERNEL
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char *SHA256_End(SHA256_CTX *, char *);
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char *SHA256_Data(const void *, unsigned int, char *);
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char *SHA256_File(const char *, char *);
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char *SHA256_FileChunk(const char *, char *, off_t, off_t);
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#endif
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__END_DECLS
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#endif /* !_SHA256_H_ */
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