/// <summary>
 /// Verifies that the group is correctly constructed.
 /// </summary>
 /// <exception cref="InvalidUProveArtifactException">
 /// Thrown if the group parameters are invalid.</exception>
 public override void Verify()
 {
     if (!ParameterSet.ContainsParameterSet(GroupName))
     {
         throw new ArgumentException("Unsupported prime curve");
     }
 }