Encryption is one of those words that is guaranteed to conjure up a variety of mental pictures, according to the interest and understanding of the individual concerned. Some will think of espionage and spies, of James Bond hacking into Dr. No's supercomputer to save the world, or the more prosaic work of the Enigma machine busters during World War 2. Some will think of complex algorithms and their relative strength. Some will think of public key infrastructures (PKIs) and messaging. Some will think of encryption in relation to portable tokens.
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