Security Attacks on the Improved SMS4-BSK Encryption Transmission System

The improved S MS 4-BS K algorithm is a symmetric key block cipher with a message block size of 128-bit. The algorithm is developed to protect the data packets, over the unsecured wireless medium, against cryptanalysis attacks. From the analysis like key sensitivity analysis and the plaintext sensitivity analysis and the security attacks on the design like brute-force attack, Chosen Plaintext attack, Known Plaintext attack, Chosen Ciphertext attack and Ciphertext Only attack,it is evident that the improved SMS4-BSK cryptosystem has the immunity against all the types of cryptanalysis attacks.