Introduction
1 Scope
2 Normative
references
2.1 Identical
Recommendations | International Standards
2.2 Additional
references
3 Definitions
4 Abbreviations
5 Notation
6 Convention
7 Conformance
8 Basic encoding
rules
8.1 General
rules for encoding
8.1.1 Structure of an encoding
8.1.2 Identifier octets
8.1.3 Length octets
8.1.4 Contents octets
8.1.5 End-of-contents octets
8.2 Encoding
of a boolean value
8.3 Encoding
of an integer value
8.4 Encoding
of an enumerated value
8.5 Encoding
of a real value
8.6 Encoding
of a bitstring value
8.7 Encoding
of an octetstring value
8.8 Encoding
of a null value
8.9 Encoding
of a sequence value
8.10 Encoding
of a sequence-of value
8.11 Encoding
of a set value
8.12 Encoding
of a set-of value
8.13 Encoding
of a choice value
8.14 Encoding
of a tagged value
8.15 Encoding
of an open type
8.16 Encoding
of an instance-of value
8.17 Encoding
of a value of the embedded-pdv type
8.18 Encoding
of a value of the external type
8.19 Encoding
of an object identifier value
8.20 Encoding
of a relative object identifier value
8.21 Encoding
for values of the restricted character string types
8.22 Encoding
for values of the unrestricted character string type
9 Canonical
encoding rules
9.1 Length
forms
9.2 String
encoding forms
9.3 Set
components
10 Distinguished encoding rules
10.1 Length
forms
10.2 String
encoding forms
10.3 Set
components
11 Restrictions on BER employed by both CER and DER
11.1 Boolean
values
11.2 Unused
bits
11.3 Real values
11.4 GeneralString
values
11.5 Set and
sequence components with default value
11.6 Set‑of
components
11.7 GeneralizedTime
11.8 UTCTime
11.8.4 Examples of valid representations
11.8.5 Examples of invalid representations
12 Use of BER, CER and DER in transfer syntax definition
Annex A –
Example of encodings
A.1 ASN.1
description of the record structure
A.2 ASN.1
description of a record value
A.3 Representation
of this record value
Annex B –
Assignment of object identifier values
Annex C –
Illustration of real value encoding