He explores polyalphabetic substitution ciphers, transposition ciphers, including one developed by the Spartans, connections between ciphers and computer encryption, stream ciphers, ciphers involving ...

It's easy to decrypt if you take some time to figure it out, but it's plenty to keep non-motivated people from spying on your stuff. This is just one useful personal encryption method of many.

We then initialize a Cipher with the same transformation algorithm used for encryption, but set to Cipher.DECRYPT_MODE. The Base64 string is decoded to a byte [], which is then placed in a ...

Secret code or foreign language? For machines, it might not matter. Without any prior knowledge, artificial intelligence algorithms have cracked two classic forms of encryption: the Caesar cipher ...