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Use Curve25519 for the Cyclic Group of Prime Order

Open louisabraham opened this issue 5 years ago • 1 comments

The base point x=9 gives a cyclic group of prime order. This solves the issue of the parameter choice in secp256r1.

louisabraham avatar Aug 21 '20 16:08 louisabraham

In fact it's what Ristretto does (give a group of prime order): https://libsodium.gitbook.io/doc/advanced/point-arithmetic/ristretto

louisabraham avatar Aug 23 '20 14:08 louisabraham