Media, Information and Technoculture 2200F/G Study Guide - Fordism, The Postmodern Condition, Cipher Disk
10 Jul 2014
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Encryption: secret writing, stegnagraphy, cyprography, subsitution, transpositionk, cipher, code. Information must be sent to troops/allies without being intercepted. Web banking, you don"t want strangers to be able to see your banking details. Cipher: replaces an entire word with a symbol or other letters so that only the recipient can decipher. The message known as cipher text, is locked. The cipher maker has to provide recipient with something called the key" (metaphorical) During war between greeks and the persians: exiles in the persian lands needed to communicate vital information to the. Greeks: carved message in wood and covered it in plastic message was conveyed without having been intercepted (steganography, this was an acceptable way of delivering messages secretly. Steganography: relies on hiding the message itself. If method for obfuscation known by enemy, method fails: still used today in digital watermarking, ex. Ancient chinese scrunched their message up in a silk ball, silk was unraveled and secret message revealed: ex.
