Hash collisions and exploitations – Instant MD5 collision

• collisions

  22 2,906 6.7 Python

  Hash collisions and exploitations

  

• sha1collisiondetection

  7 1,288 0.0 C

  Library and command line tool to detect SHA-1 collision in a file

For sha1, people made a system where you can detect the patterns that lead to a collision, and (for example) replace it with a different hash only for inputs that would be a problem. https://github.com/cr-marcstevens/sha1collisiondetection i think git does this to eek more life out of sha1.

I imagine you could take a similar counter-cryptnalysis approach to md5. (I am out of my depth here, so there could be reasons this doesnt work for md5 im unaware of)

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• smhasher

  30 1,687 7.1 C++

  Hash function quality and speed tests (by rurban)

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