FIT100
Maintaining Privacy
To
keep information private it must be hidden from “prying” computers
As children, most of
us used “secret” codes
Most often the code
was a Caesar Cipher -- an alphabetic shift by a constant amount
Coded
Text: IJKLMNOPQRSTUVWXYZABCDEFGH
Clear
Text: ABCDEFGHIJKLMNOPQRSTUVWXYZ
VW EIZ QV QZIY
Encode
Decode