Dynamic Circuit Specialisation for Key-Based Encryption Algorithms and DNA Alignment

Parameterised reconfiguration is a method for dynamic circuit specialization on FPGAs. The main advantage ofthis new concept is the high resource efficiency. Additionally, there is an automated tool flow, TMAP, that converts a hardwaredesign into a more resource-efficient run-time reconfigurable design without a large design effort. We will start by explainingthe core principles behind the dynamic circuit specialization technique. Next, we show the possible gains in encryption applicationsusing an AES encoder. Our AES design shows a 20.6% area gain compared to an unoptimized hardware implementation and a5.3% gain compared to a manually optimized third-party hardware implementation. We also used TMAP on a Triple-DES and anRC6 implementation, where we achieve a 27.8% and a 72.7% LUT-area gain. In addition, we discuss a run-time reconfigurableDNA aligner. We focus on the optimizations to the dynamic specialization overhead. Our final design is up to 2.80-times moreefficient on cheaper FPGAs than the original DNA aligner when at least one DNA sequence is longer than 758 characters. Mostsequences in DNA alignment are of the order 213