Breaking the Hash: How We Achieved the First SHA-1 Collision at DEFCON 25 🔐

Recording of my Defcon 25 talk about SHA-1 More information: https://www.elie.net/sha1 In this talk, we recount how we found the first SHA-1 collision. We delve into the challenges we faced from developing a meaningful payload, to scaling the computation to that massive scale, to solving unexpected cryptanalytic challenges that occurred during this endeavor.