diff --git a/crates/sp_client/src/user.rs b/crates/sp_client/src/user.rs
index 758c4f2..5038554 100644
--- a/crates/sp_client/src/user.rs
+++ b/crates/sp_client/src/user.rs
@@ -363,12 +363,8 @@ impl User {
         engine.write_all(&entropy);
         let hash = sha256::Hash::from_engine(engine);
 
-        let aes_dec = Aes256Decryption::new(
-            Purpose::ThirtyTwoBytes,
-            ciphertext,
-            hash.to_byte_array().to_vec(),
-            None,
-        )?;
+        let aes_dec =
+            Aes256Decryption::new(Purpose::ThirtyTwoBytes, ciphertext, hash.to_byte_array())?;
 
         aes_dec.decrypt_with_key()
     }
@@ -379,12 +375,7 @@ impl User {
         engine.write_all(&entropy);
         let hash = sha256::Hash::from_engine(engine);
 
-        let aes_dec = Aes256Decryption::new(
-            Purpose::Login,
-            ciphertext,
-            hash.to_byte_array().to_vec(),
-            None,
-        )?;
+        let aes_dec = Aes256Decryption::new(Purpose::Login, ciphertext, hash.to_byte_array())?;
 
         aes_dec.decrypt_with_key()
     }
@@ -403,12 +394,7 @@ impl User {
                 .ok_or_else(|| anyhow::Error::msg("Failed to retrieve the sharded secret"))?,
         )?;
 
-        let aes_dec = Aes256Decryption::new(
-            Purpose::Login,
-            part2_key_enc,
-            hash.to_byte_array().to_vec(),
-            None,
-        )?;
+        let aes_dec = Aes256Decryption::new(Purpose::Login, part2_key_enc, hash.to_byte_array())?;
 
         aes_dec.decrypt_with_key()
     }