# ed25519.rb A Ruby binding to the Ed25519 elliptic curve public-key signature system described in [RFC 8032]. Two implementations are provided: a MRI C extension which uses the "ref10" implementation from the SUPERCOP benchmark suite, and a pure Java version based on [str4d/ed25519-java]. Ed25519 is one of two notable algorithms implemented atop the Curve25519 elliptic curve. The [x25519 gem] is a related project of this one, and implements the X25519 Diffie-Hellman key exchange algorithm on the Montgomery form of Curve25519. [RFC 8032]: https://tools.ietf.org/html/rfc8032 [str4d/ed25519-java]: https://github.com/str4d/ed25519-java [x25519 gem]: https://github.com/crypto-rb/x25519
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