2.5.29 - certificateExtension (id-ce)

OID value: 2.5.29

OID description:
Object Identifier for Version 3 certificate extensions.

Version 3 certificate extensions are defined using the following construct.

Extension ::= SEQUENCE {
	extnId	EXTENSION.&id ({ExtensionSet}),
	critical BOOLEAN DEFAULT FALSE,
	extnValue OCTET STRING
		-- contains a DER encoding of a value of type &ExtnType
		-- for the extension object identified by extnId
}

ExtensionSet EXTENSION ::= { ... }

EXTENSION CLASS ::= {
	&id	OBJECT IDENTIFIER UNIQUE,
	&ExtnType
} WITH SYNTAX {
	SYNTAX &ExtnType
	IDENTIFIED BY &id
}

Superior references

• 2.5 - X.500 Directory Services
• 2 - ISO/ITU-T jointly assigned OIDs
• Top of OID tree

Subsidiary references (single level)

• 2.5.29.14 - Subject Key Identifier
• 2.5.29.15 - Key Usage
• 2.5.29.16 - Private Key Usage Period
• 2.5.29.17 - Subject Alternative Name
• 2.5.29.18 - Issuer Alternative Name
• 2.5.29.19 - Basic Constraints
• 2.5.29.20 - CRL Number
• 2.5.29.21 - Reason code
• 2.5.29.23 - Hold Instruction Code
• 2.5.29.24 - Invalidity Date
• 2.5.29.27 - Delta CRL indicator
• 2.5.29.28 - Issuing Distribution Point
• 2.5.29.29 - Certificate Issuer
• 2.5.29.30 - Name Constraints
• 2.5.29.31 - CRL Distribution Points
• 2.5.29.32 - Certificate Policies
• 2.5.29.33 - Policy Mappings
• 2.5.29.35 - Authority Key Identifier
• 2.5.29.36 - Policy Constraints
• 2.5.29.37 - Extended key usage