A classical cipher in which the ciphertext is obtained by scrambling the letters of the plaintext.

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About Cryptography in a Character Language

Suppose I had a message in Chinese (or another non-phonetic language) and I wanted to encipher it. Some of the simplest encryptions in English are substitution ciphers, but such ciphers don't seem ...
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Getting inverse of a transposition key

I'm new to security stuff and I have some questions about the keys of transposition cryptography. If I'm given the encoding key to a transposition cipher, how do I get the decoding key for it? I ...