Practical Start Collision Attacks on the 76 Step SHA-1

Practical Start Collision Attacks on the 76 Step SHA-1

Explore practical free-start collision attacks on the 76-step SHA-1 in this 23-minute video lecture. Delve into security notions, Merkle-Damgård hash functions, and the SHA-1 compression function. Learn about Wang collisions, preimage detours, and the significance of free-start attacks. Examine linear part selection, non-linear path construction, and acceleration techniques. Discover how to implement these attacks using GPU architecture, with code snippets and performance results provided. Gain insights into the vulnerabilities of cryptographic hash functions and the methods used to exploit them.