add Ord, Hash impls for VerificationKey (#9)

* add Ord, Hash impls for VerificationKey

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 Entries are listed in reverse chronological order.
 
+# 2.1.0
+
+* Add `PartialOrd`, `Ord`, `Hash` implementations for `VerificationKey`,
+  forwarding to the implementations on `VerificationKeyBytes`.
+
 # 2.0.1
 
 * Improve `Debug` output for `VerificationKey`.

Cargo.toml

@@ -3,7 +3,7 @@ name = "ed25519-consensus"
 # Before publishing:
 # - update CHANGELOG.md
 # - update html_root_url
-version = "2.0.1"
+version = "2.1.0"
 authors = ["Henry de Valence <hdevalence@hdevalence.ca>"]
 license = "MIT OR Apache-2.0"
 edition = "2018"

src/lib.rs

@@ -1,4 +1,4 @@
-#![doc(html_root_url = "https://docs.rs/ed25519-consensus/2.0.1")]
+#![doc(html_root_url = "https://docs.rs/ed25519-consensus/2.1.0")]
 #![doc = include_str!("../README.md")]
 #![deny(missing_docs)]
 #![cfg_attr(not(feature = "std"), no_std)]

src/verification_key.rs

@@ -113,6 +113,24 @@ pub struct VerificationKey {
     pub(crate) minus_A: EdwardsPoint,
 }
 
+impl PartialOrd for VerificationKey {
+    fn partial_cmp(&self, other: &Self) -> Option<core::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for VerificationKey {
+    fn cmp(&self, other: &Self) -> core::cmp::Ordering {
+        self.A_bytes.cmp(&other.A_bytes)
+    }
+}
+
+impl core::hash::Hash for VerificationKey {
+    fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
+        self.A_bytes.hash(state);
+    }
+}
+
 impl core::fmt::Debug for VerificationKey {
     fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::fmt::Result {
         fmt.debug_tuple("VerificationKey")