With this method of transposition, the plaintext message is encrypted into its scrambled format by being broken up into blocks and encrypted block-by-block. Let us illustrate this with our example used before, but this time, let us assume a block of three characters, mathematically represented as 3 bits, or where k=3.
Plaintext: I LOVE YOU
Plaintext Block: ILO VEY OUX
Ciphertext Block: OLI YEV XUO
Ciphertext: OLIYEVXUO
