JEP Proposal: EdDSA Signatures

[Adam Petcher]

The work for X25519/X448 is wrapping up[1], so I have started thinking 
about EdDSA. Please review the draft JEP[2] for EdDSA, and let me know 
what you think. I'm not really sure what priority to give the EdDSA 
work, and it is optional in TLS 1.3. So if you have a particular need or 
desire for EdDSA in the JDK, please let me know so I can figure what 
priority to give this task. Also let me know which variants of EdDSA you 
want---TLS only uses the "pure" variant, and I'm trying to decide 
whether it it is worthwhile to also implement the other variants.

Of course, I'm also interested in technical feedback on the JEP. A lot 
of the goals and design are similar to the X25519/X448 JEP.

[1] http://openjdk.java.net/jeps/324
[2] http://openjdk.java.net/jeps/8199231