Medal of Honor Soundtrack - Securing The Codebook
- Duration: 3:36
- Published: 2008-05-01
- Uploaded: 2010-11-14
- Author: impossibleisfaby
Medal of Honor OST - Securing The Codebook
The United States National Security Agency documents sometimes use codebook to refer to block ciphers; compare their use of combiner-type algorithm to refer to stream ciphers.
A codebook is usually made in two parts, one part being for converting plaintext to ciphertext, the other for the opposite purpose. Both are usually organized similar to a standard dictionary, with plaintext words (in the first part) and ciphertext words (in the second part) presented like dictionary headwords.
An example of an algorithm using a codebook is the MacGuffin cipher.
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