IA5STRING
A IA5String is a restricted character string type in the ASN.1 notation.
It is used to represent ISO 646 characters.
According to the ITU-T Rec. X.680 the entire character set contains precisely 128 characters.
Those characters are generally equivalent to the first 128 characters of the ASCII alphabet which is the predecessor of ISO/IEC 646 but different national versions can include accents or other characters specific to a regional language.
