High Throughput AES Algorithm with s-box sharing for Threshold Implementation

Abstract

A high speed security algorithm is always important for wired/wireless environment. Fast evaluation of digital data exchange occurs in recent years. Day by day need for security services and security mechanism are increasing. The use of cryptography requires the handling of secret keys. Therefore, new approaches are necessary to fulfill the requirements in both software and hardware implementation approach i.e., advanced encryption standard(AES). AES is one of the best security algorithm to provide data security by using special techniques i.e., “S-box sharing & threshold implementation”, AES can also provide input data length upto 256 bits which is four times greater than the DES. This leads to the increase in throughput i.e., the obtained by AES 256 key length is >60 kbps where as the throughput obtained by AES 128 key length is 47kbps only. Therefore AES with 256 key length is well suitable for security purposes. The logic verification & synthesization is done through Xilinx tool.
Index Terms– cryptography; DES; AES; S-box; Threshold Implementation.