8e1b02b8ef
This adds the Castagnoli CRC32C algorithm, using the 0x11EDC6F41
polynomial.
This is extracted from the linux kernel cryptographic crc32.c module.
The algorithm is based on:
Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman
"Optimization of Cyclic Redundancy-Check Codes with 24
and 32 Parity Bits", IEEE Transactions on Communication,
Volume 41, Number 6, June 1993
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
36 lines
1021 B
C
36 lines
1021 B
C
/*
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* Castagnoli CRC32C Checksum Algorithm
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*
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* Polynomial: 0x11EDC6F41
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*
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* Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman
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* "Optimization of Cyclic Redundancy-Check Codes with 24
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* and 32 Parity Bits",IEEE Transactions on Communication,
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* Volume 41, Number 6, June 1993
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*
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* Copyright (c) 2013 Red Hat, Inc.,
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*
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* Authors:
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* Jeff Cody <jcody@redhat.com>
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*
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* Based on the Linux kernel cryptographic crc32c module,
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*
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* Copyright (c) 2004 Cisco Systems, Inc.
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* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef QEMU_CRC32_H
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#define QEMU_CRC32_H
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#include "qemu-common.h"
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uint32_t crc32c(uint32_t crc, const uint8_t *data, unsigned int length);
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#endif
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