Resources

Standards

The formal standards documents on ASN.1 and its encoding rules are published by the International Telecommunications Union Telecommunications Sector (ITU-T) and International Standards Organization (ISO) / International Electrotechnical Commission (IEC). The following are links to the current relevant documents:

• Recommendation X.680 - Information technology -
  Abstract Syntax Notation One (ASN.1): Specification of basic notation
• Recommendation X.681 - Information technology -
  Abstract Syntax Notation One (ASN.1): Information object specification
• Recommendation X.682 - Information technology -
  Abstract Syntax Notation One (ASN.1): Constraint specification
• Recommendation X.683 - Information technology -
  Abstract Syntax Notation One (ASN.1): Parameterization of ASN.1 specifications
• Recommendation X.690 - Information technology -
  ASN.1 encoding rules; Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER)
• Recommendation X.691 - Information technology -
  ASN.1 encoding rules - Specification of Packed Encoding Rules (PER)
• Recommendation X.692 - Information technology -
  ASN.1 encoding rules - Specification of Encoding Control Notation (ECN)
• Recommendation X.693 - Information technology -
  ASN.1 encoding rules - XML Encoding Rules (XER)
• Recommendation X.694 - Information technology -
  ASN.1 encoding rules - Mapping W3C XML Schema Definitions into ASN.1
• Recommendation X.695 - Information technology -
  ASN.1 encoding rules - Registration and application of PER encoding instructions
• Recommendation X.696 - Information technology -
  ASN.1 encoding rules - Specification of Octet Encoding Rules (OER)
• Recommendation X.697 : Information technology -
  ASN.1 encoding rules - Specification of JavaScript Object Notation Encoding Rules (JER)