Playfair Cipher
1. Encode "HELLO" :
2. Encode "WORLD" :
3. Encode "CIPHER" :
4. Encode "QUIZ" :
5. Encode "ENCRYPT" :
6. Decode "XWZZG" :
7. Decode "IHUN" :
8. Decode "GATCPO" :
9. Decode "ZABVH" :
10. Decode "LKSRKG" :