A New Symmetric Key Cryptographic Algorithm using Paley Graphs and ASCII Values

The main objective of the study conducted in this article is to introduce a new algorithm encryption and decryption sensitive message after transforming it into binary message. Our proposed based on particular graph constructed algebraically from quadratic residues. We have exploited Paley an abstract way such bit according other bits by intermidiate neighborhood vertex. strong regularity graphs unknown behavior residues will play very important role cryptanalysis part which allows say that brute force attack remains for moment only obtain set possible messages.