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/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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 com.android.verity;
import java.security.PublicKey;
import java.security.PrivateKey;
import java.security.Security;
import java.security.cert.X509Certificate;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
public class VeritySigner {
private static void usage() {
System.err.println("usage: VeritySigner <contentfile> <key.pk8> " +
"<sigfile> | <contentfile> <certificate.x509.pem> <sigfile> " +
"-verify");
System.exit(1);
}
public static void main(String[] args) throws Exception {
if (args.length < 3) {
usage();
return;
}
Security.addProvider(new BouncyCastleProvider());
byte[] content = Utils.read(args[0]);
if (args.length > 3 && "-verify".equals(args[3])) {
X509Certificate cert = Utils.loadPEMCertificate(args[1]);
PublicKey publicKey = cert.getPublicKey();
byte[] signature = Utils.read(args[2]);
try {
if (Utils.verify(publicKey, content, signature,
Utils.getSignatureAlgorithmIdentifier(publicKey))) {
System.err.println("Signature is VALID");
System.exit(0);
} else {
System.err.println("Signature is INVALID");
}
} catch (Exception e) {
e.printStackTrace(System.err);
}
System.exit(1);
} else {
PrivateKey privateKey = Utils.loadDERPrivateKey(Utils.read(args[1]));
byte[] signature = Utils.sign(privateKey, content);
Utils.write(signature, args[2]);
}
}
}
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