org.bouncycastle.asn1.x509.SubjectKeyIdentifier.java Source code

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Here is the source code for org.bouncycastle.asn1.x509.SubjectKeyIdentifier.java

Source

package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.util.Arrays;

/**
 * The SubjectKeyIdentifier object.
 * <pre>
 * SubjectKeyIdentifier::= OCTET STRING
 * </pre>
 */
public class SubjectKeyIdentifier extends ASN1Object {
    private byte[] keyidentifier;

    public static SubjectKeyIdentifier getInstance(ASN1TaggedObject obj, boolean explicit) {
        return getInstance(ASN1OctetString.getInstance(obj, explicit));
    }

    public static SubjectKeyIdentifier getInstance(Object obj) {
        if (obj instanceof SubjectKeyIdentifier) {
            return (SubjectKeyIdentifier) obj;
        } else if (obj != null) {
            return new SubjectKeyIdentifier(ASN1OctetString.getInstance(obj));
        }

        return null;
    }

    public static SubjectKeyIdentifier fromExtensions(Extensions extensions) {
        return SubjectKeyIdentifier
                .getInstance(Extensions.getExtensionParsedValue(extensions, Extension.subjectKeyIdentifier));
    }

    public SubjectKeyIdentifier(byte[] keyid) {
        this.keyidentifier = Arrays.clone(keyid);
    }

    protected SubjectKeyIdentifier(ASN1OctetString keyid) {
        this(keyid.getOctets());
    }

    public byte[] getKeyIdentifier() {
        return Arrays.clone(keyidentifier);
    }

    public ASN1Primitive toASN1Primitive() {
        return new DEROctetString(getKeyIdentifier());
    }
}