What is the rule for encryption in the Playfair cipher if the letters in a pair do not appear in the same row or column? - Quora
![A Novel Approach for Encryption of Text Messages Using PLAYFAIR Cipher 6 by 6 Matrix with Four Iteration Steps | Semantic Scholar A Novel Approach for Encryption of Text Messages Using PLAYFAIR Cipher 6 by 6 Matrix with Four Iteration Steps | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/dbf0d11cb669de42baec4f151a9ec49bae9bcaff/3-Figure2-1.png)
A Novel Approach for Encryption of Text Messages Using PLAYFAIR Cipher 6 by 6 Matrix with Four Iteration Steps | Semantic Scholar
![Table 5 from Improvement of 16 X 16 Playfair Cipher using Random Number Generator | Semantic Scholar Table 5 from Improvement of 16 X 16 Playfair Cipher using Random Number Generator | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/212424398ffc5919a310d00cd868e296fc3450b6/8-Table5-1.png)