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Description: BER/DER asn.1 coding rule-BER / DER ASN.1 coding rule
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Description: ASN．1（Abstract Syntax Notation One）是由ITU－T制定的，符合以上三点要求。它定义的编码规则（如BER、PER）就相当于从局部语法到传送语法之间的转换规则。目前，很多网络协议的消息格式都是用ASN．1句法描述的，并指明了采用何种编码规则。在协议的具体实现时，我们必须在发送方设置一个ASN．1编码器，将发送方所要传送的消息经ASN．1编码后再发送出去；然后在接收方设置一个ASN．1解码器，将接收到的经ASN．1编码的消息解码为符合接收方局部语法的消息格式。由于ASN．1已经成为国际化的标准，这样，经ASN．1处理的信息独立于任何应用环境，就不会因为应用环境的不同而引起二义性的解释。
ITU－T专门讲述ASN．1的共有20个协议：X．680～X．699（还不包括较老的X．208和X.209），内容相当丰富，也非常复杂。本文的任务不在于讲述ASN．1规定的诸多名词和冗长繁杂的编码细节，而只是对BER和PER的要点做简要介绍，并将它们对比起来进行研究-ASN. 1 (Abstract Syntax Notation One) by the ITU-T developed, consistent with the above three requirements. It defined coding rules (such as BER, PER) from the local grammar equivalent of transmission conversion between the grammar rules. At present, many of the news network protocol format is used ASN. A description of the syntax and specify what the coding rules. The agreement is a concrete realization, we must set up a sender ASN. An encoder, the sender will have to transmit information via the ASN. After a code sent; The receiver then set up an ASN. A decoder that will receive by the ASN. A coding information for decoding receiver with the local news format syntax. As ASN. One has become international standards, so that by ASN. An independent processing of information in any applicatio
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Description: Information technology –
Abstract Syntax Notation One (ASN.1):
Specification of basic notation。ASN.1的标准定义。-Information technology-Abstract Syntax Notation One (ASN.1) : Specification of basic notation. The ASN.1 standard definition.
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Author: Wendy |
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Description:
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Author: Wendy |
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Description: BER/DER asn.1 coding rule-BER/DER ASN.1 coding rule
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Author: shencg |
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Author: cgs |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。-on ASN (abstract syntax description), wireless communications, software developers need to understand the data.
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Author: 梁金岭 |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料，文档ASN.681。-on ASN (abstract syntax description), wireless communications, software developers need to understand the data, Documents ASN.681.
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Author: 梁金岭 |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。文档X.682部分-on ASN (abstract syntax description), wireless communications, software developers need to understand the data. Documentation of X.682
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Author: 梁金岭 |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。文档X.683部分.-on ASN (abstract syntax description), wireless communications, software developers need to understand the data. Documents X.683 part.
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Author: 梁金岭 |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。文档X.690部分.-on ASN (abstract syntax description), wireless communications, software developers need to understand the data. Documents X.690 part.
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Author: 梁金岭 |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。 文档X.691部分.-on ASN (abstract syntax description), wireless communications, software developers need to understand the data. Documents X.691 part.
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。文档X.692部分-on ASN (abstract syntax description), wireless communications, software developers need to understand the data. Documentation of X.692
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Author: 梁金岭 |
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Description: 介绍ASN(抽象语法描述)，是无线通信软件开发者必须要了解的资料。文档X.693部分-on ASN (abstract syntax description), wireless communications, software developers need to understand the data. Documentation of X.693
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Author: 梁金岭 |
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Description: ASN.1 的PER编码标准
X.691 (12/97) ASN.1 encoding rules - Specification of Packed Encoding Rules (PER)
-X.691 (12/97) ASN.1 encoding rules- Specification of Packed Encoding Rules (PER)
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Author: zhangqing |
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Description: asn.1语法规范，比较全，包括x.680,x.681,x.682,x.683,x.691,x.692,x.693,z100,有关ASN.1的规范基本都有了-asn.1
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Author: 刘健 |
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Description: asn.1编码规范，对刚入门的朋友很有帮助-asn.1 coding standard, for beginners, helpful friends
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Author: 方林 |
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Description: asn.1编码规范，per部分，希望对学习per的朋友有所帮助-asn.1 coding standard, per part, wished to help a friend study per
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Description: Abstract Syntax Notation One (ASN.1)是一种独立于机器的描述语言，用于描述在网络上传递的消息
标准包括: ISO 8824-1 | ITU-T X.680: Specification of basic notation,
ISO 8824-2 | ITU-T X.681: Information object specification,
ISO 8824-3 | ITU-T X.682: Constraint specification,
ISO 8824-4 | ITU-T X.683: Parameterization of ASN.1
ASN.1特别适合表示现代通信应用中那些复杂的、变化的及可扩展的数据结构
ASN.1 可分为两个部分
语法规则：从数据类型、内容顺序或结构等方面来描述消息的内容
编码规则：如何编码实际消息中的数据
特点：
表达简单和复杂类型的能力
可对类型根据大小及(或)数值进行约束
也可以施加更强的约束
字段可标记为 OPTIONAL
大写开头表示类型名，小写开头的表示变量名/字段名
-asn.1 codec
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Author: 彭瑞 |
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Description: The class encapsulates the ASN.1 DER encoding/decoding work with the following part of X.509 CRL.
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Size: 1024 |
Author: ftjrkwrede |
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