--- a/makepasswd	
+++ a/makepasswd	
@@ -572,7 +572,7 @@ sub SeedRandom
 	}
 	else
 	{
-		$RNG = Bytes::Random::Secure->new(Bytes::Random::Secure::FUNC_STD);
+		$RNG = Bytes::Random::Secure->new(NonBlocking => 1);
 	}
 }