Playfair Cypher Example
- Encryption Methodology / Also Authentication
- Developed for Telegraph Secrecy
- Used in Boer War, WWI, WWII and Australian Coastal Security
- Developed in 1854 by Sir Charles Wheatstone
- Named after Lyon Playfair
- Used by John F. Kennedy after sinking of PT-109 to call for Help
- Further Advancement in Cryptography
- Simple to Encode / Decode
- Use of “Soft” Key - More Flexible
Introduction to Encryption