ITU-T X.690-2015
信息技术.抽象语法符号1编码规则:1规范的基本编码规则(BER),标准编码规则(CER)和区分编码规则(DER)研究组17

Information technology – ASN.1 encoding rules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER) (Study Group 17)

ITU-T X.690-2015 发布历史

Recommendation ITU-T X.690 | ISO/IEC 8825-1 defines a set of Basic Encoding Rules (BER) that may be applied to values of types defined using the ASN.1 notation. Application of these encoding rules produces a transfer syntax for such values. It is implicit in the specification of these encoding rules that they are also used for decoding. This Recommendation | International Standard defines also a set of Distinguished Encoding Rules (DER) and a set of Canonical Encoding Rules (CER) both of which provide constraints on the Basic Encoding Rules (BER). The key difference between them is that DER uses the definite length form of encoding while CER uses the indefinite length form. DER is more suitable for the small encoded values, while CER is more suitable for the large ones. It is implicit in the specification of these encoding rules that they are also used for decoding.

ITU-T X.690-2015由国际电信联盟 IX-ITU 发布于 2015-08-01。

ITU-T X.690-2015 在中国标准分类中归属于: L70 信息处理技术综合。

ITU-T X.690-2015 发布之时，引用了标准

• ITU-T X.880-1994 信息技术 远程操作:OSI实现 远程操作服务元素(ROSE)服务定义 44页
• ITU-T X.881-1994 信息技术-远程操作:OSI实现 远程操作服务元素(ROSE)服务定义-数据网络和开放系统通信OSI应用

ITU-T X.690-2015的历代版本如下：

• 2002年07月01日 ITU-T X.690-2002 信息技术-ASN.1编码规则:基本编码规则(BER)、正则编码规则(CER)和区分编码规则(DER)
• 2008年 ITU-T X.690-2008 信息技术 ASN.1编码规则:基本编码规则(BER)、正则编码规则(CER)和区分编码规则(DER)规范
• 2015年08月01日 ITU-T X.690-2015 信息技术.抽象语法符号1编码规则:1规范的基本编码规则(BER),标准编码规则(CER)和区分编码规则(DER)研究组17

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标准号

ITU-T X.690-2015

发布日期

2015年08月01日

实施日期

废止日期

无

中国标准分类号

L70

发布单位

IX-ITU

引用标准

ITU-T X.68-1997 ISO/IEC 8824-1:1998 ITU-T X.682-1997 ISO/IEC 8824-3:1998 ITU-T X.690-1997 ISO/IEC 8825-1:1998 ITU-T X.691-1997 ISO/IEC 8825-2:1998 ITU-T X.880-1994 ISO/IEC 13712-1:1995 ITU-T X.881-1994 ISO/IEC 13712-2:1995

适用范围

Recommendation ITU-T X.690 | ISO/IEC 8825-1 defines a set of Basic Encoding Rules (BER) that may be applied to values of types defined using the ASN.1 notation. Application of these encoding rules produces a transfer syntax for such values. It is implicit in the specification of these encoding rules that they are also used for decoding. This Recommendation | International Standard defines also a set of Distinguished Encoding Rules (DER) and a set of Canonical Encoding Rules (CER) both of which provide constraints on the Basic Encoding Rules (BER). The key difference between them is that DER uses the definite length form of encoding while CER uses the indefinite length form. DER is more suitable for the small encoded values, while CER is more suitable for the large ones. It is implicit in the specification of these encoding rules that they are also used for decoding.

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