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18:22 · May 1, 2025 · Thu
https://blog.zksecurity.xyz/posts/barrett-tighter-bound/
使用 Barrett Reduction 优化 P256 椭圆曲线算法
blog.zksecurity.xyz
Optimizing Barrett Reduction: Tighter Bounds Eliminate Redundant Subtractions - ZKSECURITY
Barrett reduction is a widely used algorithm for reducing a value modulo $m$. Our analysis, conducted during the Rust p256 crate audit, shows that the error bound for Barrett reduction can be tighter than traditionally assumed. For most moduli used in cryptography…
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