Support reading and writing ED25519 SSH keys.

src/ssh/errors.rs

@@ -1,4 +1,5 @@
 use base64::DecodeError;
+use ed25519::ED25519PublicImportError;
 use std::io;
 
 #[derive(Debug)]
@@ -37,6 +38,15 @@ impl From<io::Error> for SSHKeyParseError {
     }
 }
 
+impl From<ED25519PublicImportError> for SSHKeyParseError {
+    fn from(e: ED25519PublicImportError) -> SSHKeyParseError {
+        match e {
+            ED25519PublicImportError::WrongNumberOfBytes(_) =>
+                SSHKeyParseError::InvalidPublicKeyMaterial
+        }
+    }
+}
+
 #[derive(Debug)]
 pub enum SSHKeyRenderError {
     IOError(io::Error),