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ITU-T X.690 (02/2021)

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信息技术 – ASN.1编码规则:基本编码规则(BER)、规范编码规则(CER)和唯一编码规则(DER)
ITU-T X.690建议书| ISO/IEC 8825-1国际标准定义了一套基本编码规则(BER),可用于利用ASN.1记法定义的各类数值。应用这些编码规则可生成上述数值的传送语法。这些编码规则的规范暗示,它们也可用于解码。本建议书|国际标准还定义了一套区分编码规则(DER)和一套规范编码规则(CER),以便对基本编码规则(BER)加以约束。它们之间的主要区别是,DER使用确定长度的编码形式,而CER使用不确定长度的编码形式。DER是更适合于小的编码数值,而CER更适合大的数值。这些编码规则的规范暗示,它们也可用于解码。
Citation: https://handle.itu.int/11.1002/1000/14472
Series title: X series: Data networks, open system communications and security
  X.600-X.699: OSI networking and system aspects
  X.680-X.699: Abstract Syntax Notation One (ASN.1)
Approval date: 2021-02-13
Identical standard:ISO/IEC 8825-1 (Common)
Approval process:AAP
Status: In force
Maintenance responsibility: ITU-T Study Group 17
Further details: Patent statement(s)
Development history