International Journal of Computer Applications
In this paper, the authors have introduced a new symmetric key cryptographic method where they have clubbed both bit level and byte level generalized modified vernam cipher method with feedback. Nath et al already developed methods Bit Level Encryption Standard (BLES) Ver-I and Ver-II where they have used extensive bit level permutation, bit exchange, bit xor and bit shift encryption method. Nath et al also developed a method bit level generalized vernam cipher method. In the present study the authors have used both bit level generalized vernam cipher method and after that byte level vernam cipher method using feedback.