FM> If 2 files are 1 bit different you will *never* get the same
 FM> CRC. Or the same checksum either, using Niels' approach. The
 FM> likelihood of getting the same CRC for 2 files with *multiple*
 FM> bits different depends on the size of the file.

 BL> As I said, I bow to your superior knowledge. I have never
 BL> analysed CRC (and I don't intend to).

 RM> Think of a simpler case - it's impossible to get away with a
 RM> single bit error in one byte if parity is used.

  It's as obvious as dog's balls. I was just trying to end the
discussion.

Regards,
Bob
 
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