org.bouncycastle.jce.X509KeyUsage.java Source code

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Here is the source code for org.bouncycastle.jce.X509KeyUsage.java

Source

package org.bouncycastle.jce;

import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.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();
    }
}