Ley de Firma Digital 2015 on the regulation of the electronic signature in El Salvador matches the simple electronic signature and certified electronic signature with the handwritten signature, with full legal validity. In this country, the certified electronic signature refers to what was called in Spain in the old law the advanced electronic signature, and has full legal validity.
It includes the concept of digital signature, but refers to cryptographic methods that relate more to credit card PINs etc. than to signing.