X509Certificate.GetKeyUsage Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets a boolean array representing bits of
the KeyUsage extension, (OID = 2.
[Android.Runtime.Register("getKeyUsage", "()[Z", "GetGetKeyUsageHandler")]
public abstract bool[]? GetKeyUsage ();[<Android.Runtime.Register("getKeyUsage", "()[Z", "GetGetKeyUsageHandler")>]
abstract member GetKeyUsage : unit -> bool[]Returns
the KeyUsage extension of this certificate, represented as an array of booleans. The order of KeyUsage values in the array is the same as in the above ASN.1 definition. The array will contain a value for each KeyUsage defined above. If the KeyUsage list encoded in the certificate is longer than the above list, it will not be truncated. Returns null if this certificate does not contain a KeyUsage extension.
- Attributes
Remarks
Gets a boolean array representing bits of the KeyUsage extension, (OID = 2.5.29.15). The key usage extension defines the purpose (e.g., encipherment, signature, certificate signing) of the key contained in the certificate. The ASN.1 definition for this is:
KeyUsage ::= BIT STRING {
digitalSignature (0),
nonRepudiation (1),
keyEncipherment (2),
dataEncipherment (3),
keyAgreement (4),
keyCertSign (5),
cRLSign (6),
encipherOnly (7),
decipherOnly (8) }
RFC 3280 recommends that when used, this be marked as a critical extension.
Java documentation for java.security.cert.X509Certificate.getKeyUsage().
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.