Design of low power and secure implementation of SBOX for AES
Harshita Prasad, Jyoti Kandpal, Divya Sharma, Gaurav Verma · International Conference on Computing for Sustainable Global Development · 2016
Nowadays most of the communication is done by using digital communication systems. Therefore a Data protection plays an important role in the communication engineering. So, there arises a need to secure data from hackers. Hence the concept of Cryptography came in light. Earlier Data Encryption Standard (DES) was in trend but in that there were several shortcomings like the size of digital key was small and in this way it was sensible to external attacks moreover it was not able to present features that would held good for high level security system. New algorithm Advanced Encryption Standard (AES) removes loopholes. In AES Encryption algorithm Sub Bytes transformation utilizes S-Box. The subordinate Bytes replacement could be a nonlinear Byte replacement that utilizes substitution table (i.e. S-Box) takes the multiplicative inverse (GF (28)) and implies an affine transform to do the Sub Bytes transformation. In this research work I explored substitution table, multiplicative inverse and affine transform mathematics in Galois field; besides I recommended an encryption table to further encode the yield information.