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) }
See also the OID Repository website reference for 2.5.29.15