Historical
ISO/IEC 8825-2:2002
Information technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)
ISO/IEC 8825-2:2002 describes a set of encoding rules that can be applied to values of all ASN.1 types to achieve a much more compact representation than that achieved by the Basic Encoding Rules and its derivatives (described in ITU-T Rec.X.690 | ISO/IEC 8826-1).
International Organization for Standardization [iso]