SubkeyBindingSignatureBuilder.java
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.signature.builder;
import javax.annotation.Nullable;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.bouncycastle.openpgp.PGPSignature;
import org.pgpainless.algorithm.SignatureType;
import org.pgpainless.key.protection.SecretKeyRingProtector;
import org.pgpainless.signature.subpackets.SelfSignatureSubpackets;
public class SubkeyBindingSignatureBuilder extends AbstractSignatureBuilder<SubkeyBindingSignatureBuilder> {
public SubkeyBindingSignatureBuilder(PGPSecretKey signingKey, SecretKeyRingProtector protector)
throws PGPException {
super(SignatureType.SUBKEY_BINDING, signingKey, protector);
}
public SubkeyBindingSignatureBuilder(
PGPSecretKey signingKey,
SecretKeyRingProtector protector,
PGPSignature oldSubkeyBinding)
throws PGPException {
super(signingKey, protector, requireValidSignatureType(oldSubkeyBinding));
}
private static PGPSignature requireValidSignatureType(PGPSignature signature) {
if (signature.getSignatureType() == SignatureType.SUBKEY_BINDING.getCode()) {
return signature;
}
throw new IllegalArgumentException("Invalid signature type.");
}
@Override
protected boolean isValidSignatureType(SignatureType type) {
return type == SignatureType.SUBKEY_BINDING;
}
public SelfSignatureSubpackets getHashedSubpackets() {
return hashedSubpackets;
}
public SelfSignatureSubpackets getUnhashedSubpackets() {
return unhashedSubpackets;
}
public void applyCallback(@Nullable SelfSignatureSubpackets.Callback callback) {
if (callback != null) {
callback.modifyHashedSubpackets(getHashedSubpackets());
callback.modifyUnhashedSubpackets(getUnhashedSubpackets());
}
}
public PGPSignature build(PGPPublicKey subkey) throws PGPException {
return buildAndInitSignatureGenerator()
.generateCertification(publicSigningKey, subkey);
}
}