/* * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/ import java.security.*; import java.security.interfaces.RSAPrivateKey; import java.security.interfaces.RSAPublicKey; import java.security.spec.*; import java.util.Arrays; import java.util.stream.IntStream; importstatic javax.crypto.Cipher.PRIVATE_KEY; importstatic javax.crypto.Cipher.PUBLIC_KEY;
/** * @test * @bug 8146293 8238448 8172366 * @summary Create a signature for RSASSA-PSS and get its signed data. * re-initiate the signature with the public key. The signature * can be verified by acquired signed data. * @run main SignatureTest2 768 * @run main SignatureTest2 1024 * @run main SignatureTest2 1025 * @run main SignatureTest2 2048 * @run main SignatureTest2 2049 * @run main/timeout=240 SignatureTest2 4096
*/ publicclass SignatureTest2 { /** * ALGORITHM name, fixed as RSA.
*/ privatestaticfinal String KEYALG = "RSASSA-PSS";
privatestatic PSSParameterSpec genPSSParameter(String digestAlgo, int digestLen, int keySize) { // pick a salt length based on the key length and digestAlgo int saltLength = keySize/8 - digestLen - 2; if (saltLength < 0) {
System.out.println("keysize: " + keySize/8 + ", digestLen: " + digestLen); returnnull;
} returnnew PSSParameterSpec(digestAlgo, "MGF1", new MGF1ParameterSpec(digestAlgo), saltLength, 1);
}
privatestaticvoid checkSignature(byte[] data, PublicKey pub,
PrivateKey priv, String digestAlg, int keySize) throws RuntimeException { try {
Signature sig = Signature.getInstance(SIG_ALG, PROVIDER); int digestLen = MessageDigest.getInstance(digestAlg).getDigestLength();
PSSParameterSpec params = genPSSParameter(digestAlg, digestLen, keySize); if (params == null) {
System.out.println("Skip test due to short key size"); return;
}
sig.setParameter(params);
sig.initSign(priv); for (int i = 0; i < UPDATE_TIMES_TEN; i++) {
sig.update(data);
} byte[] signedDataTen = sig.sign();
// Make sure signature can be generated without re-init
sig.update(data); byte[] signedDataOne = sig.sign();
// Make sure signature verifies with original data
System.out.println("Verify using params " + sig.getParameters());
sig.initVerify(pub);
sig.setParameter(params); for (int i = 0; i < UPDATE_TIMES_TEN; i++) {
sig.update(data);
} if (!sig.verify(signedDataTen)) { thrownew RuntimeException("Signature verification test#1 failed w/ "
+ digestAlg);
}
// Make sure signature can verify without re-init
sig.update(data); if (!sig.verify(signedDataOne)) { thrownew RuntimeException("Signature verification test#2 failed w/ "
+ digestAlg);
}
// Make sure signature does NOT verify when the original data // has changed for (int i = 0; i < UPDATE_TIMES_TWO; i++) {
sig.update(data);
}
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