[cryptography/bls12381/tle] Add Hash to Ciphertext (#1556)

Author: patrick-ogrady

cryptography/fuzz/fuzz_targets/sha256_hasher.rs

@@ -118,8 +118,8 @@ fn fuzz_fill_and_format(byte_val: u8) {
     assert!(slice.iter().all(|&b| b == byte_val));
 
     // Test Debug and Display formatting
-    let debug_str = format!("{:?}", digest);
-    let display_str = format!("{}", digest);
+    let debug_str = format!("{digest:?}");
+    let display_str = format!("{digest}");
     assert_eq!(debug_str, display_str);
     assert_eq!(debug_str.len(), 64); // 32 bytes * 2 hex chars each
 }

cryptography/src/bls12381/tle.rs

@@ -110,7 +110,7 @@ impl From<Digest> for Block {
 }
 
 /// Encrypted message.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Hash, Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Ciphertext<V: Variant> {
     /// First group element U = r * Public::one().
     pub u: V::Public,