openpgp: Use marker types to denote a Key's type.

  - In addition to providing some added protection, this allows us to
    implement 'From<Key<_, _>> for Packet'.

1 files changed, 4 insertions, 2 deletions

diff --git a/openpgp/examples/sign.rs b/openpgp/examples/sign.rs
index cfd9c136..bdb29c4c 100644
--- a/openpgp/examples/sign.rs
+++ b/openpgp/examples/sign.rs
@@ -38,7 +38,7 @@ fn main() {
                         .expect("decryption failed");
                 }
                 n += 1;
-                key.into_keypair().unwrap()
+                key.mark_parts_secret().into_keypair().unwrap()
             });
         }
 
@@ -59,7 +59,9 @@ fn main() {
     // Now, create a signer that emits a signature.
     let signer = Signer::new(
         message,
-        keys.iter_mut().map(|s| -> &mut dyn crypto::Signer { s }).collect(),
+        keys.iter_mut()
+            .map(|s| -> &mut dyn crypto::Signer<_> { s })
+            .collect(),
         None)
         .expect("Failed to create signer");