Simplifying error handling (#232)

src/tests/full_test.rs

@@ -763,7 +763,7 @@ fn test_complete_flow(
         );
     } else {
         assert!(match client_login_result {
-            Err(ProtocolError::VerificationError(PakeError::InvalidLoginError)) => true,
+            Err(ProtocolError::InvalidLoginError) => true,
             _ => false,
         });
     }

src/tests/voprf_test_vectors.rs

@@ -125,7 +125,7 @@ fn test_blind<G: Group, H: Hash>(tvs: &[&str]) -> Result<(), ProtocolError> {
 }
 
 // Tests sksm, blinded_element -> evaluation_element
-fn test_evaluate<G: Group>(tvs: &[&str]) -> Result<(), PakeError> {
+fn test_evaluate<G: Group>(tvs: &[&str]) -> Result<(), ProtocolError> {
     for tv in tvs {
         let parameters = populate_test_vectors(&serde_json::from_str(tv).unwrap());
         let evaluation_element = oprf::evaluate::<G>(