Re: U.S. Gov't to use Full Disk Encryption on All Computers

Saqib Ali wrote:
CRC != checksum in any way shape or form. Check with your professor.

CRC is a function that produces a checksum. See:
http://en.wikipedia.org/wiki/Cyclic_redundancy_check


saqib http://www.full-disk-encryption.net


If you get your learning from Wiki you are in a sorry state.
The Wiki entry is incorrect in it's terminology. A "checksum"
is the 1's complement of the sum of all preceding bits. A
drop in of zeros of any length will not produce an invalid
checksum. I'm sure you can see that.

However, a drop in of any number of zero bytes will produce
an invalid result when using a CRC.

This is really just a language problem caused because true
'checksum' is so rare these days.
.

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