On Multiplications with Unsaturated Limbs
ID: 0151e3c0-5c89-5aa5-b663-f4e55ffb49e5
STIX ID: report--0151e3c0-5c89-5aa5-b663-f4e55ffb49e5
Feed Name: NCC Research
Executive Summary: This post evaluates implementation strategies for Curve25519/Ed25519 field arithmetic in Rust, comparing crrl and curve25519-dalek backends (m64, m51, serial, fiat, simd) with microbenchmarks on x86 and RISC-V; it explains how limb size choices and carry-propagation/instruction-set differences lead to differing performance trade-offs.
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