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MSRC

Cryptanalysis

SHA-1 Collisions Research

Thursday, February 23, 2017

Today, a group of eight researchers from across the security industry released a research report on SHA-1 that demonstrates for the first time, a “hash collision” for the full SHA-1 hash algorithm (called “SHAttered”). This is a significant step toward understanding this type of security issue, a milestone in cryptanalysis that has been underway for the past decade.