"Pwned Passwords" V2 With Half a Billion Passwords

Re:"Pwned Passwords" V2 With Half a Billion Passwords by nightcracker on Thursday February 22, 2018 @12:48AM (#16435401)

Salsa/ChaCha does not halve the output and XOR it together, they add the input block to the output to get non-invertability.

Salsa/ChaCha also does not have a block cipher, just an unkeyed permutation function which is applied to the key plus a constant and counter.

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Re:"Pwned Passwords" V2 With Half a Billion Passwords by KMag on Thursday February 22, 2018 @01:19AM (#16435557)

Thanks for the correction. Note that a couple of times I spelled Davies as Davie. Also note that after editing, my description of the Davies-Meyer addition step got mangled. The original copy is added to the result of the encryption.

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