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package org.spongycastle.jce;
import org.spongycastle.asn1.ASN1Object;
import org.spongycastle.asn1.ASN1Primitive;
import org.spongycastle.asn1.x509.KeyUsage;
/**
* A holding class for constructing an X509 Key Usage extension.
*
* <pre>
* 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) }
* </pre>
*/
public class X509KeyUsage
extends ASN1Object
{
public static final int digitalSignature = 1 << 7;
public static final int nonRepudiation = 1 << 6;
public static final int keyEncipherment = 1 << 5;
public static final int dataEncipherment = 1 << 4;
public static final int keyAgreement = 1 << 3;
public static final int keyCertSign = 1 << 2;
public static final int cRLSign = 1 << 1;
public static final int encipherOnly = 1 << 0;
public static final int decipherOnly = 1 << 15;
private int usage = 0;
/**
* Basic constructor.
*
* @param usage - the bitwise OR of the Key Usage flags giving the
* allowed uses for the key.
* e.g. (X509KeyUsage.keyEncipherment | X509KeyUsage.dataEncipherment)
*/
public X509KeyUsage(
int usage)
{
this.usage = usage;
}
public ASN1Primitive toASN1Primitive()
{
return new KeyUsage(usage).toASN1Primitive();
}
}
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