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/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* All rights reserved.
*
* Export of this software from the United States of America may require
* a specific license from the United States Government. It is the
* responsibility of any person or organization contemplating export to
* obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "k5-int.h"
#include "crc-32.h"
#include "hash_provider.h"
static krb5_error_code
k5_crc32_hash(unsigned int icount, const krb5_data *input,
krb5_data *output)
{
unsigned long c, cn;
unsigned int i;
if (output->length != CRC32_CKSUM_LENGTH)
return(KRB5_CRYPTO_INTERNAL);
c = 0;
for (i=0; i<icount; i++) {
mit_crc32(input[i].data, input[i].length, &cn);
c ^= cn;
}
output->data[0] = c&0xff;
output->data[1] = (c>>8)&0xff;
output->data[2] = (c>>16)&0xff;
output->data[3] = (c>>24)&0xff;
return(0);
}
const struct krb5_hash_provider krb5int_hash_crc32 = {
CRC32_CKSUM_LENGTH,
1,
k5_crc32_hash
};
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