International Journal of Computer Applications
In this paper, the authors have introduced a new updated two-way generalized vernam cipher method called TTSJA. Chatterjee et.al developed a method where they used three independent methods such as MSA, NJJSAA and modified generalized vernam cipher method. Nath et al already developed some symmetric key methods where they have used bit manipulation method and some randomized key matrix for encryption and decryption purpose. In the present paper, they have used updated generalized vernam cipher method in two directions. One from first character to last character and then they perform vernam method with XOR operation from last to first they found the results are quite satisfactory even for short message and repeated characters also.