Abstract
AbstractThis paper proposes a 256‐bit speed‐area‐efficient hardware elliptic curve point‐multiplication engine (ECPM‐engine) in GF(p) over generic Weierstrass curves, which is optimized by a new speed‐area‐efficient radix‐64 Montgomery modular multiplication (R64MMM) and a novel Montgomery ladder scheduling. The R64MMM calls one 129‐bit adder and one (64x64+129)‐bit multiply‐accumulator (64‐129‐MAC) in parallel to make a trade‐off between speed and area. The novel Montgomery ladder scheduling is used to improve the utilization of MAC in ECPM operation. In this ECPM‐engine, both MAC utilization in R64MMM operations and R64MMM utilization in ECPM operations are close to 100%. The result shows that the proposed ECPM‐engine consumes 72k gates when the clock frequency is 714 MHz with a 90 nm standard cell library, and it computes one 256‐bit ECPM in 0.14 ms.
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