Like the Playfair, the Double Playfair cipher uses 5x5 squares ... For keywords HAMBURG and NEWYORK written in rows and a spiral, respectively, we have the squares: H A M B U N L I/J H G R ...

Andrews, who popularized and promoted the cipher. Its simplicity and its cryptographic ... include writing it by columns or writing it in a spiral starting at one corner and ending in the center.

Method Man, Redman and Raekwon sat down with 'Billboard' to talk about the "Art of the Cypher" for Red Bull Spiral. See what ...