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by lisper 3285 days ago
Yes, but the rigged sha256 seems to produce the same results as a real sha256. And there's nothing obviously hinky in the code that I can see on cursory inspection. If this is rigged, it's rigged in a particularly clever way.

[UPDATE] Turns out this is not a vulnerability at all:

https://crypto.stackexchange.com/questions/48580/fixed-point...