throughput improvement of ripemd-160 design using unfolding transformation technique

Ripemd-160 hash functions are widely used in many applications of cryptography such as digital signature, hash message authentication code (hmac) and other data security application. there are three proposed ripemd-160 design namely ripemd-160 iterative design, ripemd-160 unfolding with factor two and ripemd-160 unfolding design with factor four. these techniques were applied to ripemd-160 designs to examine the inner structure of ripemd-160 in terms of area, maximum frequency and throughput of the design. in this project, ripemd-160 hash function using unfolding transformation technique with factor four provided high throughput implementation. the throughput of the ripemd-160 unfolding design increase significantly. the objective of this project is to enhance the performance of ripemd-160 in terms of throughput. by using unfolding transformation factor four technique, the throughput of ripemd-160 can be improved which is about 1753.50 mbps. the percentage of performance to area ratio of ripemd-160 unfolding with factor four designs increase 1.51% if compared with ripemd-160 design. the results show performance of proposed designs give the highest value compare with other designs. the simulation results were obtained from modelsim altera-quartus ii to verify the correctness of the ripemd-160 designs in terms of functional and timing simulations.