High speed and throughput evaluation of SHA-1 hash function design with pipelining and unfolding transformation techniques

In recent years,designing of sha-1 hash function has become popular because it was important in security design application. one of the applications of sha-1 hash function was hmac where the architecture of sha-1 needed to be improved in terms of speed and throughput in order to obtain the high-performance design. the objective of this project was to design high speed and throughput evaluation of sha-1 hash function based on a combination of pipelining and unfolding techniques. by using both techniques in designing the architecture of sha-1 design,the speed of sha-1 hash function can be increased significantly as well as throughput of the design. in this paper,five proposed sha-1 architectures were designed with different stages of pipelining such as 1,4 and 40 stages. the results showed the high-speed design of sha-1 design can be obtained by using 40 stages pipelining with unfolding factor two. this design provided a high-speed implementation with maximum frequency of 308.17 mhz on arria ii gx and 458.59 mhz on virtex 5 xc5vlx50t. furthermore,the throughput of the design also increased about 150.269 gbps and 223.618 gbps on arria ii gx and virtex 5 xc5vlx50t respectively. thus,high-speed design of sha-1 hash function was successfully obtained which can give benefit to society especially in security system data transmission and other types of hash functions.