International Journal of Computer Applications
In this paper, Advanced Feedback Encryption Standard version 1 (AFES-1), the researcher have combined both bit-level and byte level operations on the plain text. The researcher had recently published Multi Way Feedback Encryption Standard version 3 (MWFES-3). MWFES-3 is a byte level encryption algorithm. The authors have capitalized on the strength of MWFES-3 by introducing a bit-shuffling operation at the beginning of each iteration. At the beginning of each iteration, the plain text bits of that iteration are shuffled by using 24 different shuffling functions.