Package org.bouncycastle.asn1.x509

Class KeyUsage

java.lang.Object

org.bouncycastle.asn1.ASN1Object

org.bouncycastle.asn1.x509.KeyUsage

All Implemented Interfaces:

ASN1Encodable, Encodable

public class KeyUsage
extends ASN1Object

The KeyUsage object. id-ce-keyUsage OBJECT IDENTIFIER ::= { id-ce 15 } KeyUsage ::= BIT STRING { digitalSignature (0), nonRepudiation (1), keyEncipherment (2), dataEncipherment (3), keyAgreement (4), keyCertSign (5), cRLSign (6), encipherOnly (7), decipherOnly (8) }

Field Summary

Fields

Modifier and Type	Field	Description
static int	cRLSign
static int	dataEncipherment
static int	decipherOnly
static int	digitalSignature
static int	encipherOnly
static int	keyAgreement
static int	keyCertSign
static int	keyEncipherment
static int	nonRepudiation

Constructor Summary

Constructors

Constructor	Description
KeyUsage(int usage)	Basic constructor.

Method Summary

Modifier and Type	Method	Description
static KeyUsage	fromExtensions(Extensions extensions)
byte[]	getBytes()
static KeyUsage	getInstance(java.lang.Object obj)
int	getPadBits()
boolean	hasUsages(int usages)	Return true if a given usage bit is set, false otherwise.
ASN1Primitive	toASN1Primitive()	Method providing a primitive representation of this object suitable for encoding.
java.lang.String	toString()

Methods inherited from class org.bouncycastle.asn1.ASN1Object

encodeTo, encodeTo, equals, getEncoded, getEncoded, hasEncodedTagValue, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

digitalSignature

public static final int digitalSignature

See Also:

Constant Field Values

nonRepudiation

public static final int nonRepudiation

See Also:

Constant Field Values

keyEncipherment

public static final int keyEncipherment

See Also:

Constant Field Values

dataEncipherment

public static final int dataEncipherment

See Also:

Constant Field Values

keyAgreement

public static final int keyAgreement

See Also:

Constant Field Values

keyCertSign

public static final int keyCertSign

See Also:

Constant Field Values

cRLSign

public static final int cRLSign

See Also:

Constant Field Values

encipherOnly

public static final int encipherOnly

See Also:

Constant Field Values

decipherOnly

public static final int decipherOnly

See Also:

Constant Field Values

Constructor Detail

KeyUsage

public KeyUsage(int usage)

Basic constructor.

Parameters:

usage - - the bitwise OR of the Key Usage flags giving the allowed uses for the key. e.g. (KeyUsage.keyEncipherment | KeyUsage.dataEncipherment)

Method Detail

getInstance

public static KeyUsage getInstance(java.lang.Object obj)

fromExtensions

public static KeyUsage fromExtensions(Extensions extensions)

hasUsages

public boolean hasUsages(int usages)

Return true if a given usage bit is set, false otherwise.

Parameters:

usages - combination of usage flags.

Returns:

true if all bits are set, false otherwise.

getBytes

public byte[] getBytes()

getPadBits

public int getPadBits()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toASN1Primitive

public ASN1Primitive toASN1Primitive()

Description copied from class: ASN1Object

Method providing a primitive representation of this object suitable for encoding.

Specified by:

toASN1Primitive in interface ASN1Encodable

Specified by:

toASN1Primitive in class ASN1Object

Returns:

a primitive representation of this object.