Implement fmt::LowerHex for SecretKey and PublicKey

Author: stevenroose

src/key.rs

@@ -31,7 +31,7 @@ pub struct SecretKey([u8; constants::SECRET_KEY_SIZE]);
 impl_array_newtype!(SecretKey, u8, constants::SECRET_KEY_SIZE);
 impl_pretty_debug!(SecretKey);
 
-impl fmt::Display for SecretKey {
+impl fmt::LowerHex for SecretKey {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         for ch in &self.0[..] {
             write!(f, "{:02x}", *ch)?;
@@ -40,6 +40,12 @@ impl fmt::Display for SecretKey {
     }
 }
 
+impl fmt::Display for SecretKey {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt::LowerHex::fmt(self, f)
+    }
+}
+
 impl str::FromStr for SecretKey {
     type Err = Error;
     fn from_str(s: &str) -> Result<SecretKey, Error> {
@@ -61,7 +67,7 @@ pub const ONE_KEY: SecretKey = SecretKey([0, 0, 0, 0, 0, 0, 0, 0,
 #[derive(Copy, Clone, PartialEq, Eq, Debug, PartialOrd, Ord, Hash)]
 pub struct PublicKey(ffi::PublicKey);
 
-impl fmt::Display for PublicKey {
+impl fmt::LowerHex for PublicKey {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let ser = self.serialize();
         for ch in &ser[..] {
@@ -71,6 +77,12 @@ impl fmt::Display for PublicKey {
     }
 }
 
+impl fmt::Display for PublicKey {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt::LowerHex::fmt(self, f)
+    }
+}
+
 impl str::FromStr for PublicKey {
     type Err = Error;
     fn from_str(s: &str) -> Result<PublicKey, Error> {