Comments (3)
In the future, we can look into writing explicitly one of the other algorithms that we know of that work for any curve without being susceptible to timing attacks (e.g., [Icart09]. However, I suspect this would be slower than the current _curve1 and that is why we skipped it in NSEC5.
from nsec5-draft.
We have _curve2 for Ed25519 (it is Elligator) but not for P256.
However _curve1 works for P256 and Ed25519. That's why its there.
from nsec5-draft.
We added Elligator for Curve25519 in draft-irtf-cfrg-vrf-02
We don't have an equivalent constant time hash for Curve P256 yet.
from nsec5-draft.
Related Issues (20)
- vrf draft hash-to-curve when sizes don't match HOT 7
- vrf hash_to_curve won't end up in G when cofactor > 1 HOT 2
- "Constraints on options" text in VRF draft HOT 1
- ECVRF_hash_to_curve1 not usable when input must be kept secret? HOT 3
- ECVRF verifying if curve has cofactor > 1 HOT 2
- need to define wire format for VRF PKs HOT 5
- Getting full uniqueness HOT 5
- Request RR Types HOT 5
- do we want to keep xC2xyC in VRF draft? HOT 3
- VRF terminology HOT 2
- OS2ECP failed state HOT 1
- the additional pseudorandomness property HOT 1
- remove "where X denotes Y" from algorithms
- Add discussion of RFC8020 and RFC 8198
- Adaption of Trevor Perrin "synthetic nonce" to VRF. HOT 1
- Explain that this is just Montgomery curve equation
- Explain these using conditional move (cmov) HOT 1
- Explain this by showing which bits go where
- Suite names in test vectors don't match the specification HOT 1
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from nsec5-draft.