Information technology — ASN.1 encoding rules — Part 1: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER) (ISO/IEC 8825-1:2021)
This Recommendation | International Standard specifies a set of basic encoding rules that may be used to derive thespecification of a transfer syntax for values of types defined using the notation specified in Rec. ITU-T X.680 |ISO/ IEC 8824-1, Rec. ITU-T X.681 | ISO/ IEC 8824-2, Rec. ITU-T X.682 | ISO/ IEC 8824-3, and Rec. ITU-T X.683 |ISO/ IEC 8824-4, collectively referred to as Abstract Syntax Notation One or ASN.1. These basic encoding rules are also tobe applied for decoding such a transfer syntax in order to identify the data values being transferred. It also specifies a set ofcanonical and distinguished encoding rules that restrict the encoding of values to just one of the alternatives provided by thebasic encoding rules.
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