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CRC32 Algorithm

Description

Pure visual basic implementation of the CRC32 (Fletcher) checksum algorithm. Used for detection of data corruption. In short, this class provides an algorithm for computing a unique (sort of) numeric value that represents the composition of a file. For a faster/better method see Adler32 checksum. Note, Fletcher check insensitive to some single byte changes 0 <-> 255.

More Info

CRC32(ByVal lngCRC32 As Long, ByRef bArrayIn() As Byte, ByVal dblLength As Double) As Long

Files size assumed to be less than 2 gig. When passing byte arrays be carefull of the file size. It is best to break the file into chunks and call CRC32 multiple times.

Submitted On2002-08-25 15:56:28
ByEd Preston
LevelAdvanced
User Rating5.0 (35 globes from 7 users)
CompatibilityVB 6.0
CategoryFiles/ File Controls/ Input/ Output
WorldVisual Basic
Archive FileCRC32_Algo1222478252002.zip