Performance Analysis of the Modified Generated S-Box for Advanced Encryption Standards
Ronielle B. Antonio, Ariel M. Sison, Ruji P. Medina · 2019
On today's world where data and information is available on almost everywhere, the security of these data and information are being attacked every day. Security enhancements are being done in order to make it more secure. One of the cryptographic techniques that is being used to secure data is the Advanced Encryption Standards (AES) and one of its primary components is the Substitution box (S-box). It is the only nonlinear part of AES thus it is prone to attacks. The paper produced a modified S-box with the combination of the original S-box and the S-box produced using the Logistic Map. Adjustments were made to meet the bijective property of an S-box. It was then evaluated using balance, bijective property, nonlinearity, bit independence criterion and strict avalanche criterion. The results have met the bijective and balance property of AES with the adjustment discussed. Its nonlinearity was tested using S-box Evaluation Tool (SET) and achieved a result of 94. Its Strict Avalanche Criterion (SAC) scored 0.5234375, and Bit Independence Criterion (BIC) has -0.0275 result. As a recommendation, this S-box can undergo cryptanalysis attacks to find its weakness further.