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/*
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <openssl/sha.h>
#include <zlib.h>
#include <stdint.h>
#include <string.h>
/*
* The "weak" checksum required for the rsync algorithm.
*
* Note: these functions are only called to compute checksums on
* pathnames; they don't need to handle arbitrarily long strings of
* data. Thus int32_t and uint32_t are sufficient
*/
uint32_t
gf_rsync_weak_checksum (unsigned char *buf, size_t len)
{
return adler32 (0, buf, len);
}
/*
* The "strong" checksum required for the rsync algorithm.
*/
void
gf_rsync_strong_checksum (unsigned char *data, size_t len,
unsigned char *sha256_md)
{
SHA256((const unsigned char *)data, len, sha256_md);
}
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