[Google] Announcing the first SHA1 collision

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parityboy
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[Google] Announcing the first SHA1 collision

Post by parityboy » Fri Feb 24, 2017 10:31 pm

Today, more than 20 years after of SHA-1 was first introduced, we are announcing the first practical technique for generating a collision. This represents the culmination of two years of research that sprung from a collaboration between the CWI Institute in Amsterdam and Google. We’ve summarized how we went about generating a collision below. As a proof of the attack, we are releasing two PDFs that have identical SHA-1 hashes but different content.
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