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gus bjorklund
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the reason CRC is not as good as MD5 is because CRC was designed for a completely different purpose, namely to detect certain types of transmission errors in data communications. in such uses, the CRC is computed over a relatively small block of data (up to a few thousand bytes). differing inputs can quite normally result in the same checksum values, especially when the data blocks are too large. this makes it it unsuitable for detecting identical or changed files.
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