In cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext constitutes a permutation of the plaintext. That is, the order of the units is changed (the plaintext is reorde...
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http://en.wikipedia.org/wiki/Transposition_cipher
(from the article `cipher`) All ciphers involve either transposition or substitution, or a combination of these two mathematical operations—i.e., product ciphers. In ... In manual systems transpositions are generally carried out with the aid of an easily remembered mnemonic. For example, a popular schoolboy cipher is ... [2 rela...
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http://www.britannica.com/eb/a-z/t/73
A cipher that encodes a message by reordering the plaintext. The receiver decodes the message using the inverse transposition. A simple kind of transposition cipher writes the message into a rectangle by rows, for example: Asimplekin doftranspo sitionciph erwritesth emessagein toarectang lebyrowsan...
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