org.bouncycastle.bcpg.sig.IssuerFingerprint Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcpg-lts8on Show documentation

The Bouncy Castle Java APIs for the OpenPGP Protocol. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

The newest version!

package org.bouncycastle.bcpg.sig;

import org.bouncycastle.bcpg.FingerprintUtil;
import org.bouncycastle.bcpg.KeyIdentifier;
import org.bouncycastle.bcpg.PublicKeyPacket;
import org.bouncycastle.bcpg.SignatureSubpacket;
import org.bouncycastle.bcpg.SignatureSubpacketTags;
import org.bouncycastle.util.Arrays;

/**
 * Signature Subpacket containing the fingerprint of the issuers signing (sub-) key.
 * This packet supersedes the {@link IssuerKeyID} subpacket.
 *
 * @see 
 *     RFC9580 - Issuer Fingerprint
 */
public class IssuerFingerprint
    extends SignatureSubpacket
{
    public IssuerFingerprint(
        boolean    critical,
        boolean    isLongLength,
        byte[]     data)
    {
        super(SignatureSubpacketTags.ISSUER_FINGERPRINT, critical, isLongLength, data);
    }

    public IssuerFingerprint(
        boolean    critical,
        int        keyVersion,
        byte[]     fingerprint)
    {
        super(SignatureSubpacketTags.ISSUER_FINGERPRINT, critical, false,
            Arrays.prepend(fingerprint, (byte)keyVersion));
    }

    public int getKeyVersion()
    {
        return data[0] & 0xff;
    }

    public byte[] getFingerprint()
    {
        return Arrays.copyOfRange(data, 1, data.length);
    }

    public long getKeyID()
    {
        if (getKeyVersion() == PublicKeyPacket.VERSION_4)
        {
            return FingerprintUtil.keyIdFromV4Fingerprint(getFingerprint());
        }
        if (getKeyVersion() == PublicKeyPacket.LIBREPGP_5)
        {
            return FingerprintUtil.keyIdFromLibrePgpFingerprint(getFingerprint());
        }
        if (getKeyVersion() == PublicKeyPacket.VERSION_6)
        {
            return FingerprintUtil.keyIdFromV6Fingerprint(getFingerprint());
        }
        return 0;
    }

    public KeyIdentifier getKeyIdentifier()
    {
        return new KeyIdentifier(getFingerprint());
    }
}