61 lines
2.4 KiB
Java
61 lines
2.4 KiB
Java
/*
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* Copyright 2018 Paul Schaub.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.pgpainless.key.selection.key.impl;
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPPublicKey;
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import org.bouncycastle.openpgp.PGPSignature;
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import org.bouncycastle.openpgp.operator.bc.BcPGPContentVerifierBuilderProvider;
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import org.pgpainless.key.selection.key.PublicKeySelectionStrategy;
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public class SignedByMasterKey {
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private static final Logger LOGGER = Logger.getLogger(SignedByMasterKey.class.getName());
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public static class PubkeySelectionStrategy extends PublicKeySelectionStrategy<PGPPublicKey> {
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@Override
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public boolean accept(PGPPublicKey masterKey, PGPPublicKey key) {
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// Same key -> accept
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if (Arrays.equals(masterKey.getFingerprint(), key.getFingerprint())) {
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return true;
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}
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Iterator<PGPSignature> signatures = key.getSignaturesForKeyID(masterKey.getKeyID());
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while (signatures.hasNext()) {
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PGPSignature signature = signatures.next();
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if (signature.getSignatureType() == PGPSignature.SUBKEY_BINDING) {
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try {
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signature.init(new BcPGPContentVerifierBuilderProvider(), masterKey);
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return signature.verifyCertification(masterKey, key);
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} catch (PGPException e) {
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LOGGER.log(Level.WARNING, "Could not verify subkey signature of key " +
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Long.toHexString(masterKey.getKeyID()) + " on key " + Long.toHexString(key.getKeyID()));
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return false;
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}
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}
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}
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return false;
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}
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}
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}
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