Extensions to the Go standard library's Ed25519 and curve25519 implementations (library)

 This package provides extensions to the Go standard library's Ed25519 and
 curve25519 implementations, primarily extracted from curve25519-voi. This
 package is intended for interoperability with the standard library and the
 edwards25519 package as much as possible.
  * h2c: Hashing to Elliptic Curves (version 13)
  * vrf: Verifiable Random Functions (version 10)