Public domain

Thin wrapper API by Rebex CR, s.r.o. (https://labs.rebex.net/curves/)
C# port + code by Christian Winnerlein (CodesInChaos)

Curve25519 and Ed25519 in c
        written by Dan Bernstein (djb)
        public domain
        from Ref10 in SUPERCOP http://bench.cr.yp.to/supercop.html

SHA512
        written by Christian Winnerlein (CodesInChaos)
        public domain
        directly from the specification