openpgp: Avoid heap allocation during fingerprint computing.

1 files changed, 2 insertions, 2 deletions

diff --git a/openpgp/src/packet/key.rs b/openpgp/src/packet/key.rs
index 9479caec..148061d8 100644
--- a/openpgp/src/packet/key.rs
+++ b/openpgp/src/packet/key.rs
@@ -1163,9 +1163,9 @@ impl<P, R> Key4<P, R>
 
             self.hash(&mut h);
 
-            let mut digest = vec![0u8; h.digest_size()];
+            let mut digest = [0u8; 20];
             let _ = h.digest(&mut digest);
-            Fingerprint::from_bytes(digest.as_slice())
+            Fingerprint::V4(digest)
         }).clone()
     }