RFC 3641 (rfc3641) - Page 1 of 16


Generic String Encoding Rules (GSER) for ASN



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Network Working Group                                            S. Legg
Request for Comments: 3641                           Adacel Technologies
Category: Standards Track                                   October 2003


          Generic String Encoding Rules (GSER) for ASN.1 Types

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This document defines a set of Abstract Syntax Notation One (ASN.1)
   encoding rules, called the Generic String Encoding Rules (GSER), that
   produce a human readable text encoding for values of any given ASN.1
   data type.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Conventions. . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Generic String Encoding Rules. . . . . . . . . . . . . . . . .  3
       3.1.  Type Referencing Notations . . . . . . . . . . . . . . .  3
       3.2.  Restricted Character String Types. . . . . . . . . . . .  4
       3.3.  ChoiceOfStrings Types. . . . . . . . . . . . . . . . . .  5
       3.4.  Identifiers. . . . . . . . . . . . . . . . . . . . . . .  6
       3.5.  BIT STRING . . . . . . . . . . . . . . . . . . . . . . .  7
       3.6.  BOOLEAN. . . . . . . . . . . . . . . . . . . . . . . . .  7
       3.7.  ENUMERATED . . . . . . . . . . . . . . . . . . . . . . .  8
       3.8.  INTEGER. . . . . . . . . . . . . . . . . . . . . . . . .  8
       3.9.  NULL . . . . . . . . . . . . . . . . . . . . . . . . . .  8
       3.10. OBJECT IDENTIFIER and RELATIVE-OID . . . . . . . . . . .  8
       3.11. OCTET STRING . . . . . . . . . . . . . . . . . . . . . .  9
       3.12. CHOICE . . . . . . . . . . . . . . . . . . . . . . . . .  9
       3.13. SEQUENCE and SET . . . . . . . . . . . . . . . . . . . . 10
       3.14. SEQUENCE OF and SET OF . . . . . . . . . . . . . . . . . 10
       3.15. CHARACTER STRING . . . . . . . . . . . . . . . . . . . . 11
       3.16. EMBEDDED PDV . . . . . . . . . . . . . . . . . . . . . . 11
       3.17. EXTERNAL . . . . . . . . . . . . . . . . . . . . . . . . 11



Legg                        Standards Track


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