26 February 2007
Information theory - Wikipedia, the free encyclopedia
by 1 otherConsider the communications process over a discrete channel. A simple model of the process is shown below:
17 February 2007
Using padding in encryption
by 5 othersDES INPUT BLOCK = f o r _ _ _ _ _
(IN HEX) 66 6F 72 80 00 00 00 00
KEY = 01 23 45 67 89 AB CD EF
DES OUTPUT BLOCK = BE 62 5D 9F F3 C6 C8 40
After decrypting, strip off all trailing zero bytes and the 0x80 byte.
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