BS ISO/IEC 8824-1:2021

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Information technology. Abstract Syntax Notation One (ASN.1) – Specification of basic notation

Published By	Publication Date	Number of Pages
BSI	2021	198

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Categories: 35.100.60 - Presentation layer, BSI

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Description

This Recommendation | International Standard provides a standard notation called Abstract Syntax Notation One (ASN.1) that is used for the definition of data types, values, and constraints on data types.

This Recommendation | International Standard:

defines a number of simple types, with their tags, and specifies a notation for referencing these types and for specifying values of these types;
defines mechanisms for constructing new types from more basic types, and specifies a notation for defining such types and assigning them tags, and for specifying values of these types;
defines character sets (by reference to other Recommendations and/or International Standards) for use within ASN.1.

The ASN.1 notation can be applied whenever it is necessary to define the abstract syntax of information.

The ASN.1 notation is referenced by other standards which define encoding rules for the ASN.1 types.

PDF Catalog

PDF Pages	PDF Title
2	undefined
6	Blank Page
7	CONTENTS
12	Introduction
15	1 Scope 2 Normative references 2.1 Identical Recommendations \| International Standards
16	2.2 Additional references 3 Definitions 3.1 International Object Identifier tree specification 3.2 Information object specification
17	3.3 Constraint specification 3.4 Parameterization of ASN.1 specification 3.5 Structure for identification of organizations 3.6 Universal Multiple-Octet Coded Character Set (UCS) 3.7 Representation of dates and times
18	3.8 Additional definitions
23	4 Abbreviations 5 Notation 5.1 General
24	5.2 Productions 5.3 The alternative collections 5.4 Non-spacing indicator 5.5 Example of a production 5.6 Layout
25	5.7 Recursion 5.8 References to permitted sequences of lexical items 5.9 References to a lexical item 5.10 Short-hand notations
26	5.11 Value references and the typing of values 6 The ASN.1 model of type extension 7 Extensibility requirements on encoding rules
27	8 Tags
28	9 Encoding instructions
29	10 Use of the ASN.1 notation 11 The ASN.1 character set
30	12 ASN.1 lexical items 12.1 General rules
31	12.2 Type references 12.3 Identifiers 12.4 Value references 12.5 Module references 12.6 Comments
32	12.7 Empty lexical item 12.8 Numbers 12.9 Real numbers 12.10 Binary strings 12.11 XML binary string item 12.12 Hexadecimal strings
33	12.13 XML hexadecimal string item 12.14 Character strings
34	12.15 XML character string item
36	12.16 The simple character string lexical item 12.17 Time value character strings 12.18 XML time value character string item 12.19 The property and setting names lexical item 12.20 Assignment lexical item 12.21 Range separator 12.22 Ellipsis
37	12.23 Left version brackets 12.24 Right version brackets 12.25 Encoding references 12.26 Integer-valued Unicode labels 12.27 Non-integer Unicode labels 12.28 XML end tag start item 12.29 XML single tag end item 12.30 XML boolean true item
38	12.31 XML boolean extended-true item 12.32 XML boolean false item 12.33 XML boolean extended-false item 12.34 XML real not-a-number item 12.35 XML real infinity item
39	12.36 XML tag names for ASN.1 types
40	12.37 Single character lexical items 12.38 Reserved words
41	13 Module definition
45	14 Referencing type and value definitions
46	15 Notation to support references to ASN.1 components
47	16 Assigning types and values
49	17 Definition of types and values
52	18 Notation for the boolean type 19 Notation for the integer type
53	20 Notation for the enumerated type
55	21 Notation for the real type
56	22 Notation for the bitstring type
58	23 Notation for the octetstring type 24 Notation for the null type
59	25 Notation for sequence types
62	26 Notation for sequence-of types
64	27 Notation for set types
65	28 Notation for set-of types
66	29 Notation for choice types
68	30 Notation for selection types 31 Notation for prefixed types 31.1 General
69	31.2 The tagged type 31.3 The encoding prefixed type
70	32 Notation for the object identifier type
72	33 Notation for the relative object identifier type
73	34 Notation for the OID internationalized resource identifier type
74	35 Notation for the relative OID internationalized resource identifier type 36 Notation for the embedded-pdv type
76	37 Notation for the external type
77	38 The time type 38.1 General 38.2 Time properties and settings of time abstract values
81	38.3 Basic value notation and XML value notation for time abstract values with specified property settings
85	38.4 Useful time types
86	39 The character string types
87	40 Notation for character string types 41 Definition of restricted character string types
91	42 Naming characters, collections and property category sets
95	43 Canonical order of characters
96	44 Definition of unrestricted character string types
97	45 Notation for types defined in clauses 46 to 48 46 Generalized time
99	47 Universal time 48 The object descriptor type
100	49 Constrained types
101	50 Element set specification
103	51 Subtype elements 51.1 General
105	51.2 Single value 51.3 Contained subtype 51.4 Value range 51.5 Size constraint
106	51.6 Type constraint 51.7 Permitted alphabet 51.8 Inner subtyping
108	51.9 Pattern constraint 51.10 Property settings
109	51.11 Duration range 51.12 Time point range 51.13 Recurrence range
110	52 The extension marker
112	53 The exception identifier 54 Encoding control sections
114	Annex A ASN.1 regular expressions A.1 Definition A.2 Metacharacters
118	Annex B The defined time types B.1 General B.2 The ASN.1 defined time types module
123	Annex C Rules for type and value Compatibility C.1 The need for the value mapping concept (tutorial introduction)
125	C.2 Value mappings
126	C.3 Identical type definitions
128	C.4 Specification of value mappings C.5 Additional value mappings defined for the character string types
129	C.6 Specific type and value compatibility requirements
130	C.7 Examples C.7.2 Example 1 C.7.3 Example 2 C.7.4 Example 3 C.7.5 Example 4 C.7.6 Example 5
131	C.7.7 Example 6
132	Annex D Assigned object identifier and OID internationalized resource identifier values D.1 Values assigned in this Recommendation \| International Standard D.2 Object identifiers in the ASN.1 and encoding rules standards
134	Annex E Encoding references
135	Annex F Assignment and use of arcs in the International Object Identifier tree F.1 General F.2 Use of the International Object Identifier tree by the object identifier (OBJECT IDENTIFIER) type F.3 Use of the International Object Identifier tree by the OID internationalized resource identifier (OID-IRI) type
136	Annex G Examples and hints G.1 Example of a personnel record G.1.1 Informal description of Personnel Record G.1.2 ASN.1 description of the record structure
137	G.1.3 ASN.1 description of a record value G.2 Guidelines for use of the notation
138	G.2.1 Boolean G.2.2 Integer G.2.3 Enumerated
139	G.2.4 Real G.2.5 Bit string
141	G.2.6 Octet string G.2.7 UniversalString, BMPString and UTF8String
142	G.2.8 CHARACTER STRING
143	G.2.9 Null G.2.10 Sequence and sequence-of
145	G.2.11 Set and set-of
147	G.2.12 Tagged
148	G.2.13 Choice
150	G.2.14 Selection type
151	G.2.16 Embedded-pdv G.2.17 External G.2.18 Instance-of
152	G.2.19 Object identifier G.2.20 OID internationalized resource identifier G.2.21 Relative object identifier G.3 Value notation and property settings (TIME type and useful time types) G.3.1 Date
153	G.3.2 Time of day G.3.3 Date and time of day
154	G.3.4 Time interval
155	G.3.5 Recurring interval G.4 Identifying abstract syntaxes
156	G.5 Subtypes
160	Annex H Tutorial annex on ASN.1 character strings H.1 Character string support in ASN.1 H.2 The UniversalString, UTF8String and BMPString types
161	H.3 On ISO/IEC 10646 conformance requirements H.4 Recommendations for ASN.1 users on ISO/IEC 10646 conformance
162	H.5 Adopted subsets as parameters of the abstract syntax H.6 The CHARACTER STRING type
163	Annex I Tutorial annex on the ASN.1 model of type extension I.1 Overview
164	I.2 Meaning of version numbers
165	I.3 Requirements on encoding rules I.4 Combination of (possibly extensible) constraints I.4.1 Model I.4.2 Serial application of constraints
166	I.4.3 Use of set arithmetic
167	I.4.4 Use of the Contained Subtype notation
168	Annex J Tutorial annex on the TIME type J.1 The collections of ASN.1 types for times and dates J.2 ISO 8601 key concepts
169	J.3 Abstract values of the TIME type
170	J.4 Time properties of the time abstract values J.5 Value notation
171	J.6 Use of the ASN.1 subtype notation J.7 The property settings subtype notation
173	Annex K Analyzing TIME type value notation K.1 General K.2 Analyzing the full string
174	K.3 Analysis of a string containing an interval K.4 Analysis of a string containing a date
175	K.5 Analysis of a string containing a year K.6 Analysis of a string containing a century K.7 Analysis of a string containing a time
176	K.8 Analysis of a string containing a simple time
177	Annex L Summary of the ASN.1 notation

Additional information

Status	Definitive
Pages	198
Publication Date	2021-07-19
ISBN	978 0 539 14454 3
Standard Number	BS ISO/IEC 8824-1:2021
Title	Information technology. Abstract Syntax Notation One (ASN.1) – Specification of basic notation
Identical National Standard Of	ISO/IEC 8824-1:2021
Descriptors	Syntax, Coding (data conversion), Character strings, Coded character sets, Data transfer, Information exchange, Data processing, Data transmission, Character sets, Presentation layer (OSI), Conformity, Definitions, Open systems interconnection
Publisher	BSI
Committee	IST/6
ICS Codes	35.100.60 - Presentation layer

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