Damus
Matt Corallo · 2d
That’s definitely not true. If you can run a test on the bits (and can extract a few orders of magnitude more bits than you need) before you use them and before they’re hashed/whitened/etc, you ca...
waxwing profile picture
Test before hashed/ whitened: yes. That was my original thought. But as others pointed out, that's not the same thing as what the whole process outputs.

Also as per your comment with HWW, isn't it super-hard/impossible to check the *input* to dev/urandom's CSPRNG, in practice?

If I'm wrong, I'm very glad, but I think if I am wrong, it's at least *extremely* messy, right?
1
Matt Corallo · 2d
> Test before hashed/ whitened: yes. That was my original thought. But as others pointed out, that's not the same thing as what the whole process outputs. Sure, but screwing up XORing three validated chunks together is harder than screwing up one. It wouldn’t have saved this case (which was ultim...