1 #ifndef AWS_CHECKSUMS_PRIVATE_CRC_PRIV_H
2 #define AWS_CHECKSUMS_PRIVATE_CRC_PRIV_H
3 /**
4  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
5  * SPDX-License-Identifier: Apache-2.0.
6  */
7 
8 #define AWS_CRC32_SIZE_BYTES 4
9 
10 #include <aws/checksums/exports.h>
11 #include <stdint.h>
12 
13 #ifdef __cplusplus
14 extern "C" {
15 #endif
16 
17 /* Computes CRC32 (Ethernet, gzip, et. al.) using a (slow) reference implementation. */
18 AWS_CHECKSUMS_API uint32_t aws_checksums_crc32_sw(const uint8_t *input, int length, uint32_t previousCrc32);
19 
20 /* Computes the Castagnoli CRC32c (iSCSI) using a (slow) reference implementation. */
21 AWS_CHECKSUMS_API uint32_t aws_checksums_crc32c_sw(const uint8_t *input, int length, uint32_t previousCrc32c);
22 
23 /* Computes the Castagnoli CRC32c (iSCSI). */
24 AWS_CHECKSUMS_API uint32_t aws_checksums_crc32c_hw(const uint8_t *data, int length, uint32_t previousCrc32);
25 
26 /* Computes CRC32 (Ethernet, gzip, et. al.) using crc instructions. */
27 AWS_CHECKSUMS_API uint32_t aws_checksums_crc32_hw(const uint8_t *data, int length, uint32_t previousCrc32);
28 
29 #ifdef __cplusplus
30 }
31 #endif
32 
33 #endif /* AWS_CHECKSUMS_PRIVATE_CRC_PRIV_H */
34