The private key for ed25519 never returned crypto.PrivateKey. This
caused the generation of certificates to not work and may also have
resulted in other issues.
Back when this file was created, ed25519 wasn't available as it is
today, 8 years later.
Now ed25519 is implemented in go directly, so use their work instead of
an upstream project that is now gone.
This adds the ed25519 implementation. It implements most of the API,
apart from three functions.
Both MarshalPem methods write the raw bytes to the channel instead of
exporting it into ASN.1. Maybe this needs to be fixed.
The PrivateKey() function does not return a crypto.PrivateKey at the
moment, as the ed25519 private key does not implement that interface.
Gibheer
Gibheer