class

Compress::Snappy::CRC32C

Inherits Reference < Object

A pure Crystal implementation of the CRC32 checksum that uses the CRC32-C Castagnoli polynomial, the same polynomial used by iSCSI and implemented on many Intel chipsets supporting SSE4.2.

Constructors

Class methods

mask(crc)

returns a masked representation of crc.

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masked_crc32c(data : Slice, length : Int32)
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masked_crc32c(data : Slice)
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unmask(masked_crc : UInt32) : UInt32

return the crc whose masked representation is masked crc

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Instance methods

masked_value
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reset

The CRC-32C (Castagnoli) register starts at 0xFFFFFFFF and the final value is complemented, per the iSCSI/SCTP definition used by Snappy.

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update(data : Slice, crc : UInt32)
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update(b : Slice, len : Int32)
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update(b : Slice)
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update(b : UInt32)
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