*: Derive Debug and Clone(#2495)

Co-authored-by: Max Inden <mail@max-inden.de>

core/src/identity.rs

@@ -63,7 +63,7 @@ use std::convert::{TryFrom, TryInto};
 /// let keypair = Keypair::rsa_from_pkcs8(&mut bytes);
 /// ```
 ///
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub enum Keypair {
     /// An Ed25519 keypair.
     Ed25519(ed25519::Keypair),

core/src/identity/rsa.rs

@@ -33,6 +33,14 @@ use zeroize::Zeroize;
 #[derive(Clone)]
 pub struct Keypair(Arc<RsaKeyPair>);
 
+impl std::fmt::Debug for Keypair {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        f.debug_struct("Keypair")
+            .field("public", self.0.public_key())
+            .finish()
+    }
+}
+
 impl Keypair {
     /// Decode an RSA keypair from a DER-encoded private key in PKCS#8 PrivateKeyInfo
     /// format (i.e. unencrypted) as defined in [RFC5208].