Hello,

I have a question regarding ed25519 as implemented in gnupg 2.2.17, libgcrypt 
1.8.4.

Let’s say I sign a file. When checking the signature with verbose output, I can 
see that sha256 was used

gpg: binary signature, digest algorithm SHA256, key algorithm ed25519

According to Wikipedia "Ed25519 is the EdDSA signature scheme using SHA-512 and 
Curve25519”. Granted, I have sha256 in my preferences, but the standard should 
override that, correct? I wonder, because in a different application (iPGMail) 
using the same key with the same embedded preferences, sha512 is used.

Curious,
RH
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