Aws::Crt::Checksum Namespace Reference

Classes
class	XXHash

Functions
uint32_t AWS_CRT_CPP_API	ComputeCRC32 (ByteCursor input, uint32_t previousCRC32=0) noexcept
uint32_t AWS_CRT_CPP_API	ComputeCRC32C (ByteCursor input, uint32_t previousCRC32C=0) noexcept
uint64_t AWS_CRT_CPP_API	ComputeCRC64NVME (ByteCursor input, uint64_t previousCRC64NVME=0) noexcept
uint32_t AWS_CRT_CPP_API	CombineCRC32 (uint32_t crc1, uint32_t crc2, uint64_t len2) noexcept
uint32_t AWS_CRT_CPP_API	CombineCRC32C (uint32_t crc1, uint32_t crc2, uint64_t len2) noexcept
uint64_t AWS_CRT_CPP_API	CombineCRC64NVME (uint64_t crc1, uint64_t crc2, uint64_t len2) noexcept
bool AWS_CRT_CPP_API	ComputeXXHash64 (const ByteCursor &input, ByteBuf &output, uint64_t seed=0) noexcept
bool AWS_CRT_CPP_API	ComputeXXHash3_64 (const ByteCursor &input, ByteBuf &output, uint64_t seed=0) noexcept
bool AWS_CRT_CPP_API	ComputeXXHash3_128 (const ByteCursor &input, ByteBuf &output, uint64_t seed=0) noexcept

Function Documentation

CombineCRC32()

uint32_t Aws::Crt::Checksum::CombineCRC32 ( uint32_t  crc1, uint32_t  crc2, uint64_t  len2  )

noexcept

Combines two CRC32 (Ethernet, gzip) checksums computed over separate data blocks.

CombineCRC32C()

uint32_t Aws::Crt::Checksum::CombineCRC32C ( uint32_t  crc1, uint32_t  crc2, uint64_t  len2  )

noexcept

Combines two CRC32C (Castagnoli, iSCSI) checksums computed over separate data blocks.

CombineCRC64NVME()

uint64_t Aws::Crt::Checksum::CombineCRC64NVME ( uint64_t  crc1, uint64_t  crc2, uint64_t  len2  )

noexcept

Combines two CRC64-NVME checksums computed over separate data blocks.

ComputeCRC32()

uint32_t Aws::Crt::Checksum::ComputeCRC32 ( ByteCursor  input, uint32_t  previousCRC32 = 0  )

noexcept

The entry point function to perform a CRC32 (Ethernet, gzip) computation. Selects a suitable implementation based on hardware capabilities. Pass previousCRC32 if updating a running checksum.

ComputeCRC32C()

uint32_t Aws::Crt::Checksum::ComputeCRC32C ( ByteCursor  input, uint32_t  previousCRC32C = 0  )

noexcept

The entry point function to perform a Castagnoli CRC32c (iSCSI) computation. Selects a suitable implementation based on hardware capabilities. Pass previousCRC32C if updating a running checksum.

ComputeCRC64NVME()

uint64_t Aws::Crt::Checksum::ComputeCRC64NVME ( ByteCursor  input, uint64_t  previousCRC64NVME = 0  )

noexcept

The entry point function to perform a CRC64-NVME (a.k.a. CRC64-Rocksoft) computation. Selects a suitable implementation based on hardware capabilities. Pass previousCRC64NVME if updating a running checksum. There are many variants of CRC64 algorithms. This CRC64 variant is bit-reflected (based on the non bit-reflected polynomial 0xad93d23594c93659) and inverts the CRC input and output bits.

ComputeXXHash3_128()

bool Aws::Crt::Checksum::ComputeXXHash3_128 ( const ByteCursor &  input, ByteBuf &  output, uint64_t  seed = 0  )

noexcept

Computes a XXHash3_128 Hash using the default allocator over input, and writes the digest to output. Returns true on success. If this function fails, Aws::Crt::LastError() will contain the error that occurred.

ComputeXXHash3_64()

bool Aws::Crt::Checksum::ComputeXXHash3_64 ( const ByteCursor &  input, ByteBuf &  output, uint64_t  seed = 0  )

noexcept

Computes a XXHash3_64 Hash using the default allocator over input, and writes the digest to output. Returns true on success. If this function fails, Aws::Crt::LastError() will contain the error that occurred.

ComputeXXHash64()

bool Aws::Crt::Checksum::ComputeXXHash64 ( const ByteCursor &  input, ByteBuf &  output, uint64_t  seed = 0  )

noexcept

Computes a XXHash64 Hash over input, and writes the digest to output. Returns true on success. If this function fails, Aws::Crt::LastError() will contain the error that occurred.