S. Karthiga
"Enhancing Security in Cloud Computing using Playfair and Caeser Cipher in Substitution Techniques".
International Journal of Innovative Technology and Exploring Engineering,
vol: 09,
No. 04
Mar. 2026, pp: 912 - 920,
https://scholar9.com/publication-detail/enhancing-security-in-cloud-computing-using-playfa-2667
