Information technology - ASN.1 encoding rules - Part 7: Specification of Octet Encoding Rules (OER)

CSA Group
Standards Development Organisation:
Canadian Standards Association (operating as CSA Group)
Working Program:
View the CSA work program
Designation Number:
ISO/IEC 8825-7
Standard Type:
National Standard of Canada - Adoption of International Standard
Standard Development Activity:
New Edition
ICS code(s):
35.100.60
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

This Recommendation | International Standard specifies a set of Basic Octet Encoding Rules (BASIC-OER) that may be used to derive a transfer syntax for values of the types defined 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, Rec. ITU-T X.683 | ISO/IEC 8824-4. This Recommendation | International Standard also specifies a set of Canonical Octet Encoding Rules (CANONICAL-OER) which provides constraints on the Basic Octet Encoding Rules and produces a unique encoding for any given ASN.1 value. It is implicit in the specification of these encoding rules that they are also to be used for decoding.

The encoding rules specified in this Recommendation | International Standard:

  • are used at the time of communication;
  • are intended for use in circumstances where encoding/decoding speed is the major concern in the choice of encoding rules;
  • allow the extension of an abstract syntax by addition of extra values for all forms of extensibility described in Rec. ITU-T X.680 | ISO/IEC 8824-1.

Project need:

To align Canadian requirements with those of international standards in the ICT subject area (adoption of new standard. This proposed New Standard is being developed at the request of P123 Technical Committee on Information Technology. It will provide the industry with the latest requirements in the field of ICT, including cybersecurity and software. This will meet the strategic needs of the following key interests: a) ensuring that the latest innovative/technology/safety features are available for users.

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