128 lines
4.5 KiB
Java
128 lines
4.5 KiB
Java
/*
|
|
* Copyright 2021 Paul Schaub.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
package org.pgpainless.sop;
|
|
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.io.OutputStream;
|
|
import java.util.ArrayList;
|
|
import java.util.List;
|
|
|
|
import org.bouncycastle.openpgp.PGPException;
|
|
import org.bouncycastle.openpgp.PGPSecretKeyRing;
|
|
import org.bouncycastle.openpgp.PGPSignature;
|
|
import org.bouncycastle.util.io.Streams;
|
|
import org.pgpainless.PGPainless;
|
|
import org.pgpainless.algorithm.DocumentSignatureType;
|
|
import org.pgpainless.encryption_signing.EncryptionResult;
|
|
import org.pgpainless.encryption_signing.EncryptionStream;
|
|
import org.pgpainless.encryption_signing.ProducerOptions;
|
|
import org.pgpainless.encryption_signing.SigningOptions;
|
|
import org.pgpainless.key.SubkeyIdentifier;
|
|
import org.pgpainless.key.info.KeyRingInfo;
|
|
import org.pgpainless.key.protection.SecretKeyRingProtector;
|
|
import org.pgpainless.util.ArmoredOutputStreamFactory;
|
|
import sop.Ready;
|
|
import sop.enums.SignAs;
|
|
import sop.exception.SOPGPException;
|
|
import sop.operation.Sign;
|
|
|
|
public class SignImpl implements Sign {
|
|
|
|
private boolean armor = true;
|
|
private SignAs mode = SignAs.Binary;
|
|
private final SigningOptions signingOptions = new SigningOptions();
|
|
|
|
@Override
|
|
public Sign noArmor() {
|
|
armor = false;
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public Sign mode(SignAs mode) {
|
|
this.mode = mode;
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public Sign key(InputStream keyIn) throws SOPGPException.KeyIsProtected, SOPGPException.BadData, IOException {
|
|
try {
|
|
PGPSecretKeyRing key = PGPainless.readKeyRing().secretKeyRing(keyIn);
|
|
KeyRingInfo info = new KeyRingInfo(key);
|
|
if (!info.isFullyDecrypted()) {
|
|
throw new SOPGPException.KeyIsProtected();
|
|
}
|
|
signingOptions.addDetachedSignature(SecretKeyRingProtector.unprotectedKeys(), key, modeToSigType(mode));
|
|
} catch (PGPException e) {
|
|
throw new SOPGPException.BadData(e);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
@Override
|
|
public Ready data(InputStream data) throws IOException {
|
|
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
|
|
try {
|
|
EncryptionStream signingStream = PGPainless.encryptAndOrSign()
|
|
.onOutputStream(buffer)
|
|
.withOptions(ProducerOptions.sign(signingOptions)
|
|
.setAsciiArmor(armor));
|
|
|
|
return new Ready() {
|
|
@Override
|
|
public void writeTo(OutputStream outputStream) throws IOException {
|
|
|
|
if (signingStream.isClosed()) {
|
|
throw new IllegalStateException("EncryptionStream is already closed.");
|
|
}
|
|
|
|
Streams.pipeAll(data, signingStream);
|
|
signingStream.close();
|
|
EncryptionResult encryptionResult = signingStream.getResult();
|
|
|
|
List<PGPSignature> signatures = new ArrayList<>();
|
|
for (SubkeyIdentifier key : encryptionResult.getDetachedSignatures().keySet()) {
|
|
signatures.addAll(encryptionResult.getDetachedSignatures().get(key));
|
|
}
|
|
|
|
OutputStream out;
|
|
if (armor) {
|
|
out = ArmoredOutputStreamFactory.get(outputStream);
|
|
} else {
|
|
out = outputStream;
|
|
}
|
|
for (PGPSignature sig : signatures) {
|
|
sig.encode(out);
|
|
}
|
|
out.close();
|
|
outputStream.close(); // armor out does not close underlying stream
|
|
}
|
|
};
|
|
|
|
} catch (PGPException e) {
|
|
throw new RuntimeException(e);
|
|
}
|
|
|
|
}
|
|
|
|
private static DocumentSignatureType modeToSigType(SignAs mode) {
|
|
return mode == SignAs.Binary ? DocumentSignatureType.BINARY_DOCUMENT
|
|
: DocumentSignatureType.CANONICAL_TEXT_DOCUMENT;
|
|
}
|
|
}
|