High-Throughput Message Digest (MD5) Design and Simulation-Based Power Estimation Using Unfolding Transformation

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The high throughput of the cryptographic hash function has become an important aspect of the hardware implementation of security system design. There are several methods that can be used to improve the throughput performance of MD5 design. In this paper, four types of MD5 design were proposed: MD5 iterative design, MD5 unfolding design, MD5 unfolding with 4 stages of pipelining design and MD5 unfolding with 32 stages of pipelining design. The results indicated that MD5 unfolding with 32 stages pipelining of design provides a high throughput compared with other MD5 designs. By using an unfolding transformation factor of 2, the number of cycles of MD5 design was reduced from 64 to 32. All the proposed designs were successfully designed using Verilog code and simulated using ModelSim. The throughput of MD5 unfolding with 32 stages of pipelining design was increased significantly to 137.97 Gbps, and the power of this MD5 unfolding with 32 stages of pipelining was 750.99 mW. Therefore, it is suggested that an unfolding transformation with a high performance pipelining are applied to MD5 hash function design in order to produce an embedded security system design. This paper is expected to be for improving the maximum frequency and the throughput of MD5 design. Thus, by increasing the number of stages in MD5 unfolding design, the performance of MD5 designs can be improved significantly.

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