125 lines
4.5 KiB
Java
125 lines
4.5 KiB
Java
/*
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* Copyright 2021 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.sop;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPPublicKeyRingCollection;
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import org.bouncycastle.openpgp.PGPSignature;
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import org.bouncycastle.util.io.Streams;
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import org.pgpainless.PGPainless;
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import org.pgpainless.decryption_verification.ConsumerOptions;
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import org.pgpainless.decryption_verification.DecryptionStream;
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import org.pgpainless.decryption_verification.OpenPgpMetadata;
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import org.pgpainless.exception.NotYetImplementedException;
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import org.pgpainless.key.SubkeyIdentifier;
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import sop.Verification;
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import sop.exception.SOPGPException;
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import sop.operation.Verify;
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public class VerifyImpl implements Verify {
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ConsumerOptions options = new ConsumerOptions();
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@Override
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public Verify notBefore(Date timestamp) throws SOPGPException.UnsupportedOption {
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try {
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options.verifyNotBefore(timestamp);
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} catch (NotYetImplementedException e) {
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// throw new SOPGPException.UnsupportedOption();
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}
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return this;
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}
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@Override
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public Verify notAfter(Date timestamp) throws SOPGPException.UnsupportedOption {
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try {
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options.verifyNotAfter(timestamp);
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} catch (NotYetImplementedException e) {
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// throw new SOPGPException.UnsupportedOption();
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}
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return this;
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}
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@Override
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public Verify cert(InputStream cert) throws SOPGPException.BadData {
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PGPPublicKeyRingCollection certificates;
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try {
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certificates = PGPainless.readKeyRing().publicKeyRingCollection(cert);
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} catch (IOException | PGPException e) {
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throw new SOPGPException.BadData(e);
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}
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options.addVerificationCerts(certificates);
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return this;
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}
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@Override
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public VerifyImpl signatures(InputStream signatures) throws SOPGPException.BadData {
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try {
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options.addVerificationOfDetachedSignatures(signatures);
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} catch (IOException | PGPException e) {
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throw new SOPGPException.BadData(e);
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}
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return this;
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}
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@Override
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public List<Verification> data(InputStream data) throws IOException, SOPGPException.NoSignature, SOPGPException.BadData {
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DecryptionStream decryptionStream;
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try {
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decryptionStream = PGPainless.decryptAndOrVerify()
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.onInputStream(data)
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.withOptions(options);
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Streams.drain(decryptionStream);
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decryptionStream.close();
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OpenPgpMetadata metadata = decryptionStream.getResult();
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List<Verification> verificationList = new ArrayList<>();
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for (SubkeyIdentifier verifiedSigningKey : metadata.getVerifiedSignatures().keySet()) {
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PGPSignature signature = metadata.getVerifiedSignatures().get(verifiedSigningKey);
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Date verifyNotBefore = options.getVerifyNotBefore();
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Date verifyNotAfter = options.getVerifyNotAfter();
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if (verifyNotAfter == null || !signature.getCreationTime().after(verifyNotAfter)) {
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if (verifyNotBefore == null || !signature.getCreationTime().before(verifyNotBefore)) {
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verificationList.add(new Verification(
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signature.getCreationTime(),
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verifiedSigningKey.getSubkeyFingerprint().toString(),
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verifiedSigningKey.getPrimaryKeyFingerprint().toString()));
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}
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}
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}
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if (!options.getCertificates().isEmpty()) {
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if (verificationList.isEmpty()) {
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throw new SOPGPException.NoSignature();
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}
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}
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return verificationList;
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} catch (PGPException e) {
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throw new SOPGPException.BadData(e);
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}
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}
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}
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