The Ristretto specification defines a way to do hash-to-curve. The hash-to-curve draft and other drafts (such as the one on OPRFs) recommend doing it using hashtobase+elligator2 as with Ed25519 instead. A forthcoming paper is going to propose a 3rd way. This is annoying.
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Replying to @jedisct1
that's why the Ristretto specification specifies One Way, and One Way Only, to do hash-to-group, so that implementors don't need to make a choice.
2 replies 1 retweet 6 likes
Replying to @hdevalence
Having no choice here is an excellent decision. Thanks!
11:37 AM - 2 May 2019
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