[RFR] 8166597: Crypto support for the EdDSA Signature Algorithm (JEP 339)

[Weijun Wang]

One more thing:

https://tools.ietf.org/html/rfc8410#section-1

   In [RFC8032] the elliptic curve signature system Edwards-curve
   Digital Signature Algorithm (EdDSA) is described along with a
   recommendation for the use of the curve25519 and curve448.  EdDSA has
   defined two modes: the PureEdDSA mode without prehashing and the
   HashEdDSA mode with prehashing.  The convention used for identifying
   the algorithm/curve combinations is to use "Ed25519" and "Ed448" for
   the PureEdDSA mode.

Does this mean we should reject prehash=true for "Ed25519" and "Ed448"?

Thanks,
Max