derive clone for hasher

Author: abdulmth

src/encoder.rs

@@ -33,6 +33,7 @@ pub struct SdObjectEncoder<H: Hasher> {
 /// Transforms a JSON object into an SD-JWT object by substituting selected values
 /// with their corresponding disclosure digests.
 #[cfg(feature = "sha")]
+#[derive(Debug, Clone)]
 pub struct SdObjectEncoder<H: Hasher = Sha256Hasher> {
   /// The object in JSON format.
   object: Map<String, Value>,

src/hasher.rs

@@ -36,7 +36,7 @@ pub trait Hasher: Sync + Send {
 }
 
 /// An implementation of [`Hasher`] that uses the `sha-256` hash function.
-#[derive(Default)]
+#[derive(Default, Clone, Copy)]
 #[cfg(feature = "sha")]
 pub struct Sha256Hasher;