DES -- Implementation Issues (TripleDES, Key Replacement, Padding)
A Quick survey of major DES implementation issues: original DES is obsolete, Triple-DES, and other remedies. Threat analysis and Key Replacement Policy, and padding schemes. If you encrypt a 4 digits payment PIN, (What Target did...) and pad it with zeros, you weaken DES considerably. You avoid implementation mistakes by learning the machinery of the cipher you use. That is what we do in the Crypto Academy (WeSecure.net/learn).
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