openpgp: Add a conversion from KeyHandle to String.

  - Add a function to convert a KeyHandle to a String like there are
    functions to convert a Fingerprint and a KeyID to a String.

1 files changed, 9 insertions, 0 deletions

diff --git a/openpgp/src/keyhandle.rs b/openpgp/src/keyhandle.rs
index c5058b9d..e4fb3323 100644
--- a/openpgp/src/keyhandle.rs
+++ b/openpgp/src/keyhandle.rs
@@ -94,6 +94,15 @@ impl TryFrom<&KeyHandle> for Fingerprint {
     }
 }
 
+impl From<KeyHandle> for String {
+    fn from(i: KeyHandle) -> Self {
+        match i {
+            KeyHandle::Fingerprint(i) => i.to_string(),
+            KeyHandle::KeyID(i) => i.to_string(),
+        }
+    }
+}
+
 impl PartialOrd for KeyHandle {
     fn partial_cmp(&self, other: &KeyHandle) -> Option<Ordering> {
         let a = self.as_slice();