The one-time pad – Encryption and Decryption

4.3.2 The one-time pad The prime example of a perfectly secret encryption scheme is the so-called one-time pad, also known as the Vernam cipher. It was first described by Frank Miller in 1882 and re-invented by Gilbert Vernam in 1917, who also patented the cipher in 1919. The original version of the Vernam cipher had…