Frank L. Berry

3GHz, 74mW 2-level Karatsuba 64b Galois field multiplier for public-key encryption acceleration in 45nm CMOS

A Karatsuba-based 64b Galois field multiplier for on-die acceleration of public-key encryption is fabricated in 1.1V, 45nm CMOS and occupies 0.021mm2. 2-level Karatsuba design using interleaved 32b multipliers and folded datapath organization results in single-cycle latency at 3GHz operation with total power consumption of 74mW and 32% area reduction over conventional multipliers, resulting in 3.2x speedup of Diffie-Helman key exchange workloads.