2.5.29.15 - Key Usage

OID value: 2.5.29.15

OID description:
id-ce-keyUsage

This extension indicates the purpose for which the certified public key is used.

This extension may, at the option of the certificate issuer, be either critical or non-critical.

keyUsage EXTENSION ::= {
	SYNTAX KeyUsage
	IDENTIFIED BY id-ce-keyUsage
}

KeyUsage ::= BIT STRING {
	digitalSignature(0),
	nonRepudiation(1),
	keyEncipherment(2),
	dataEncipherment(3),
	keyAgreement(4),
	keyCertSign(5),
	cRLSign(6)
}

Superior references

• 2.5.29 - certificateExtension (id-ce)
• 2.5 - X.500 Directory Services
• 2 - ISO/ITU-T jointly assigned OIDs
• Top of OID tree