Introduction
1 Scope
2 Normative
references
2.1 Identical
Recommendations | International Standards
2.2 Additional
references
3 Definitions
3.1 ASN.1
definitions
3.2 ECN‑specific
definitions
4 Abbreviations
5 Definition of
ECN syntax
6 Encoding
conventions and notation
7 The ECN
character set
8 ECN lexical
items
8.1 Encoding
object references
8.2 Encoding
object set references
8.3 Encoding
class references
8.4 Reserved
word items
8.5 Reserved
encoding class name items
8.6 Non-ECN
item
9 ECN Concepts
9.1 Encoding
Control Notation (ECN) specifications
9.2 Encoding
classes
9.3 Encoding
structures
9.4 Encoding
objects
9.5 Encoding
object sets
9.6 Defining
new encoding classes
9.7 Defining
encoding objects
9.8 Differential
encoding-decoding
9.9 Encoders
options in encodings
9.10 Properties
of encoding objects
9.11 Parameterization
9.12 Governors
9.13 General
aspects of encodings
9.14 Identification
of information elements
9.15 Reference
fields and determinants
9.16 Replacement
classes and structures
9.17 Mapping
abstract values onto fields of encoding structures
9.18 Transforms
and transform composites
9.19 Contents
of Encoding Definition Modules
9.20 Contents
of the Encoding Link Module
9.21 Defining
encodings for primitive encoding classes
9.22 Application
of encodings
9.23 Combined
encoding object set
9.24 Application
point
9.25 Conditional
encodings
9.26 Other
conditions for applying encodings
9.27 Encoding
control for the open type
9.28 Changes
to ASN.1 Recommendations | International Standards
10 Identifying
encoding classes, encoding objects, and encoding object sets
11 Encoding ASN.1
types
11.1 General
11.2 Built‑in
encoding classes used for implicitly generated encoding structures
11.3 Simplification
and expansion of ASN.1 notation for encoding purposes
11.4 The
implicitly generated encoding structure
12 The Encoding
Link Module (ELM)
12.1 Structure
of the ELM
12.2 Encoding
types
13 Application of
encodings
13.1 General
13.2 The
combined encoding object set and its application
14 The Encoding
Definition Module (EDM)
15 The renames
clause
15.1 Explicitly
generated and exported structures
15.2 Name
changes
15.3 Specifying
the region for name changes
16 Encoding class
assignments
16.1 General
16.2 Encoding
structure definition
16.3 Alternative
encoding structure
16.4 Repetition
encoding structure
16.5 Concatenation
encoding structure
17 Encoding object
assignments
17.1 General
17.2 Encoding
with a defined syntax
17.3 Encoding
with encoding object sets
17.4 Encoding
using value mappings
17.5 Encoding
an encoding structure
17.6 Differential
encoding-decoding
17.7 Encoding
options
17.8 Non-ECN
definition of encoding objects
18 Encoding object
set assignments
18.1 General
18.2 Built‑in
encoding object sets
19 Mapping values
19.1 General
19.2 Mapping
by explicit values
19.3 Mapping
by matching fields
19.4 Mapping
by #TRANSFORM encoding objects
19.5 Mapping
by abstract value ordering
19.6 Mapping
by value distribution
19.7 Mapping
integer values to bits
20 Defining
encoding objects using defined syntax
21 Types used in
defined syntax specification
21.1 The Unit type
21.2 The EncodingSpaceSize type
21.3 The EncodingSpaceDetermination type
21.4 The UnusedBitsDetermination type
21.5 The OptionalityDetermination type
21.6 The AlternativeDetermination type
21.7 The RepetitionSpaceDetermination type
21.8 The Justification type
21.9 The Padding type
21.10 The Pattern and Non-Null-Pattern
types
21.11 The RangeCondition type
21.12 The Comparison type
21.13 The SizeRangeCondition type
21.14 The ReversalSpecification type
21.15 The ResultSize type
21.16 The HandleValueSet type
21.17 The IntegerMapping type
22 Commonly used
encoding property groups
22.1 Replacement
specification
22.1.1 Encoding properties, syntax and purpose
22.1.2 Specification restrictions
22.1.3 Encoder actions
22.1.4 Decoder actions
22.2 Pre-alignment
and padding specification
22.2.1 Encoding properties, syntax and purpose
22.2.2 Specification constraints
22.2.3 Encoder actions
22.2.4 Decoder actions
22.3 Start
pointer specification
22.3.1 Encoding properties, syntax and purpose
22.3.2 Specification constraints
22.3.3 Encoder actions
22.3.4 Decoder actions
22.4 Encoding
space specification
22.4.1 Encoding properties, syntax and purpose
22.4.2 Specification restrictions
22.4.3 Encoder actions
22.4.4 Decoder actions
22.5 Optionality
determination
22.5.1 Encoding properties, syntax and purpose
22.5.2 Specification restrictions
22.5.3 Encoder actions
22.5.4 Decoder actions
22.6 Alternative
determination
22.6.1 Encoding properties, syntax and purpose
22.6.2 Specification restrictions
22.6.3 Encoder actions
22.6.4 Decoder actions
22.7 Repetition
space specification
22.7.1 Encoding properties, syntax and purpose
22.7.2 Specification constraints
22.7.3 Encoder actions
22.7.4 Decoder actions
22.8 Value
padding and justification
22.8.1 Encoding properties, syntax, and purpose
22.8.2 Specification restrictions
22.8.3 Encoder actions
22.8.4 Decoder actions
22.9 Identification
handle specification
22.9.1 Encoding properties, syntax and purpose
22.9.2 Specification constraints
22.9.3 Encoders actions
22.9.4 Decoders actions
22.10 Concatenation
specification
22.10.1 Encoding properties, syntax and purpose
22.10.2 Specification constraints
22.10.3 Encoder actions
22.10.4 Decoder actions
22.11 Contained
type encoding specification
22.11.1 Encoding properties, syntax and purpose
22.11.2 Encoder actions
22.11.3 Decoder actions
22.12 Bit
reversal specification
22.12.1 Encoding properties, syntax, and purpose
22.12.2 Specification constraints
22.12.3 Encoder actions
22.12.4 Decoder actions
23 Defined syntax
specification for bit-field and constructor classes
23.1 Defining
encoding objects for classes in the alternatives category
23.1.1 The defined syntax
23.1.2 Purpose and restrictions
23.1.3 Encoder actions
23.1.4 Decoder actions
23.2 Defining
encoding objects for classes in the bitstring category
23.2.1 The defined syntax
23.2.2 Model for the encoding of classes in the bitstring category
23.2.3 Purpose and restrictions
23.2.4 Encoder actions
23.2.5 Decoder actions
23.3 Defining
encoding objects for classes in the boolean category
23.3.1 The defined syntax
23.3.2 Purpose and restrictions
23.3.3 Encoder actions
23.3.4 Decoder actions
23.4 Defining
encoding objects for classes in the characterstring category
23.4.1 The defined syntax
23.4.2 Model for the encoding of classes in the characterstring
category
23.4.3 Purpose and restrictions
23.4.4 Encoder actions
23.4.5 Decoder actions
23.5 Defining
encoding objects for classes in the concatenation category
23.5.1 The defined syntax
23.5.2 Purpose and restrictions
23.5.3 Encoder actions
23.5.4 Decoder actions
23.6 Defining
encoding objects for classes in the integer category
23.6.1 The defined syntax
23.6.2 Purpose and restrictions
23.6.3 Encoder actions
23.6.4 Decoder actions
23.7 Defining
encoding objects for the #CONDITIONAL-INT class
23.7.1 The defined syntax
23.7.2 Purpose and restrictions
23.7.3 Encoder actions
23.7.4 Decoder actions
23.8 Defining
encoding objects for classes in the null category
23.8.1 The defined syntax
23.8.2 Purpose and restrictions
23.8.3 Encoder actions
23.8.4 Decoder actions
23.9 Defining
encoding objects for classes in the octetstring category
23.9.1 The defined syntax
23.9.2 Model for the encoding of classes in the octetstring
category
23.9.3 Purpose and restrictions
23.9.4 Encoder actions
23.9.5 Decoder actions
23.10 Defining
encoding objects for classes in the open type category
23.10.1 The defined syntax
23.10.2 Model for the encoding of classes in the open type category
23.10.3 Purpose and restrictions
23.10.4 Encoder actions
23.10.5 Decoder actions
23.11 Defining
encoding objects for classes in the optionality category
23.11.1 The defined syntax
23.11.2 Purpose and restrictions
23.11.3 Encoder actions
23.11.4 Decoder actions
23.12 Defining
encoding objects for classes in the pad category
23.12.1 The defined syntax
23.12.2 Purpose and restrictions
23.12.3 Encoder actions
23.12.4 Decoder actions
23.13 Defining
encoding objects for classes in the repetition category
23.13.1 The defined syntax
23.13.2 Purpose and restrictions
23.13.3 Encoder actions
23.13.4 Decoder actions
23.14 Defining
encoding objects for the #CONDITIONAL-REPETITION class
23.14.1 The defined syntax
23.14.2 Purpose and restrictions
23.14.3 Encoder actions
23.14.4 Decoder actions
23.15 Defining
encoding objects for classes in the tag category
23.15.1 The defined syntax
23.15.2 Purpose and restrictions
23.15.3 Encoder actions
23.15.4 Decoder actions
23.16 Defining
encoding objects for classes in the other categories
24 Defined syntax
specification for the #TRANSFORM encoding class
24.1 Summary
of encoding properties and defined syntax
24.2 Source
and target of transforms
24.3 The
int-to-int transform
24.4 The
bool-to-bool transform
24.5 The
bool-to-int transform
24.6 The
int-to-bool transform
24.7 The
int-to-chars transform
24.8 The
int-to-bits transform
24.9 The
bits-to-int transform
24.10 The
char-to-bits transform
24.11 The
bits-to-char transform
24.12 The
bit-to-bits transform
24.13 The
bits-to-bits transform
24.14 The
chars-to-composite-char transform
24.15 The
bits-to-composite-bits transform
24.16 The
octets-to-composite-bits transform
24.17 The
composite-char-to-chars transform
24.18 The
composite-bits-to-bits transform
24.19 The
composite-bits-to-octets transform
25 Complete
encodings and the #OUTER class
25.1 Encoding
properties, syntax and purpose for the #OUTER class
25.2 Encoder
actions for #OUTER
25.3 Decoder
actions for #OUTER
Annex A Addendum to ITU‑T Rec. X.680 | ISO/IEC
8824‑1
A.1 Exports
and imports clauses
A.2 Addition
of REFERENCE
A.3 Notation
for character string values
Annex B Addendum to ITU‑T Rec. X.681 | ISO/IEC
8824‑2
B.1 Definitions
B.2 Additional
lexical items
B.2.1 Ordered value list field references
B.2.2 Ordered encoding object list field references
B.2.3 Encoding class field references
B.3 Addition
of "ENCODING‑CLASS"
B.4 FieldSpec
additions
B.5 Fixed-type
ordered value list field spec
B.6 Fixed-class
encoding object field spec
B.7 Variable-class
encoding object field spec
B.8 Fixed-class
encoding object set field spec
B.9 Fixed-class
ordered encoding object list field spec
B.10 Encoding
class field spec
B.11 Ordered
value list notation
B.12 Ordered
encoding object list notation
B.13 Primitive
field names
B.14 Additional
reserved words
B.15 Definition
of encoding objects
B.16 Additions
to "Setting"
B.17 Encoding
class field type
Annex C Addendum to ITU‑T Rec. X.683 | ISO/IEC
8824‑4
Annex C Addendum to ITU‑T Rec. X.683 | ISO/IEC
8824‑4
C.1 Parameterized
assignments
C.2 Parameterized
encoding assignments
C.3 Referencing
parameterized definitions
C.4 Actual
parameter list
Annex D Examples
Annex E Support for Huffman encodings
Annex F Additional information on the Encoding
Control Notation (ECN)
Annex G Summary of the ECN notation