标准编号：ISO/IEC 8825-7:2014
中文名称：信息技术 ASN.1编码规则 第7部分：八位字节编码规则（OER）规范
英文名称：Information technology — ASN.1 encoding rules — Part 7: Specification of Octet Encoding Rules (OER)
发布日期：2014-12
标准范围
This Recommendation | International Standard specifies a set of Basic Octet Encoding Rules (BASIC-OER) that may beused 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 providesconstraints on the Basic Octet Encoding Rules and produces a unique encoding for any given ASN.1 value. It is implicitin 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 choiceof encoding rules;– allow the extension of an abstract syntax by addition of extra values for all forms of extensibility describedin Rec. ITU-T X.680 | ISO/IEC 8824-1.
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