Open emanjon opened 3 months ago
Bernstein wrote:
https://mailarchive.ietf.org/arch/msg/cfrg/GRigAYvZ8-Z8qmxJ1jOiKR8eLyQ/
Compute SHA-512(dom2(F, C) || Z || prefix || 000... || PH(M)),
What stops implementors from forgetting to include PH(M) in the hash input? I'd recommend building this on top of a deterministic interface where Z is an explicit input, and making sure to test that interface.
I assume the suggestion here is that the interface is inside of the specification. I.e., the end user calls Sign(sk, M) and the description in the specification is
Sign(sk, M):
I think this is a good idea.
Big fan of derandomized interfaces, and NIST is planning to introduce them for the PQ algorithms (https://groups.google.com/a/list.nist.gov/g/pqc-forum/c/Mf2kemwwreY/m/oF8HfaNxAQAJ) so I like the idea of a testable Sign_internal(sk, M, Z)
, but only if it doesn't delay this draft further. I'd like to implement this and produce shared test vectors for it ASAP :)
Seems to be strong support for specifying a derandomized interface. We will add that.
I'd like to implement this and produce shared test vectors for it ASAP :) Noted, let's try to move this draft to publications asap. Early comments was mostly about naming and IPR, It is just recently we have gotten a lot of good technical comments, which are very welcome.
https://mailarchive.ietf.org/arch/msg/cfrg/jmfn1b880x7-7gZKb7_uwLvE3oU/
Taylor R Campbell wrote: Where does one find test vectors for the deterministic functions defined here with the extra randomization parameters Z?
Daniel Bernstein wrote: