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/*
* Copyright (c) 2018, 2024, 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;
import static javax.crypto.Cipher.PRIVATE_KEY;
import static 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
*/
public class SignatureTest2 {
/**
* ALGORITHM name, fixed as RSA.
*/
private static final String KEYALG = "RSASSA-PSS";
/**
* JDK default RSA Provider.
*/
private static final String PROVIDER =
System.getProperty("test.provider.name", "SunRsaSign");
/**
* How much times signature updated.
*/
private static final int UPDATE_TIMES_TWO = 2;
/**
* How much times signature initial updated.
*/
private static final int UPDATE_TIMES_TEN = 10;
/**
* Digest algorithms to test w/ RSASSA-PSS signature algorithms
*/
private static final String[] DIGEST_ALG = {
"SHA-1", "SHA-224", "SHA-256", "SHA-384",
"SHA-512", "SHA-512/224", "SHA-512/256",
"SHA3-224", "SHA3-256", "SHA3-384", "SHA3-512"
};
private static final String SIG_ALG = "RSASSA-PSS";
private static 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);
return null;
}
return new PSSParameterSpec(digestAlgo, "MGF1",
new MGF1ParameterSpec(digestAlgo), saltLength, 1);
}
public static void main(String[] args) throws Exception {
final int testSize = Integer.parseInt(args[0]);
byte[] data = new byte[100];
IntStream.range(0, data.length).forEach(j -> {
data[j] = (byte) j;
});
// create a key pair
KeyPair kpair = generateKeys(KEYALG, testSize);
Key[] privs = manipulateKey(PRIVATE_KEY, kpair.getPrivate());
Key[] pubs = manipulateKey(PUBLIC_KEY, kpair.getPublic());
// For messsage digest algorithm, create and verify a RSASSA-PSS signature
Arrays.stream(privs).forEach(priv
-> Arrays.stream(pubs).forEach(pub
-> Arrays.stream(DIGEST_ALG).forEach(testAlg -> {
checkSignature(data, (PublicKey) pub, (PrivateKey) priv,
testAlg, testSize);
}
)));
}
private static KeyPair generateKeys(String keyalg, int size)
throws NoSuchAlgorithmException {
KeyPairGenerator kpg = KeyPairGenerator.getInstance(keyalg);
kpg.initialize(size);
return kpg.generateKeyPair();
}
private static Key[] manipulateKey(int type, Key key)
throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException {
KeyFactory kf = KeyFactory.getInstance(KEYALG, PROVIDER);
switch (type) {
case PUBLIC_KEY:
return new Key[]{
kf.generatePublic(kf.getKeySpec(key, RSAPublicKeySpec.class)),
kf.generatePublic(new X509EncodedKeySpec(key.getEncoded())),
kf.generatePublic(new RSAPublicKeySpec(
((RSAPublicKey) key).getModulus(),
((RSAPublicKey) key).getPublicExponent()))
};
case PRIVATE_KEY:
return new Key[]{
kf.generatePrivate(kf.getKeySpec(key,
RSAPrivateKeySpec.class)),
kf.generatePrivate(new PKCS8EncodedKeySpec(
key.getEncoded())),
kf.generatePrivate(new RSAPrivateKeySpec(((RSAPrivateKey) key).getModulus(),
((RSAPrivateKey) key).getPrivateExponent()))
};
}
throw new RuntimeException("We shouldn't reach here");
}
private static void 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)) {
throw new RuntimeException("Signature verification test#1 failed w/ "
+ digestAlg);
}
// Make sure signature can verify without re-init
sig.update(data);
if (!sig.verify(signedDataOne)) {
throw new 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);
}
if (sig.verify(signedDataOne)) {
throw new RuntimeException("Bad signature accepted w/ "
+ digestAlg);
}
} catch (NoSuchAlgorithmException | InvalidKeyException |
SignatureException | NoSuchProviderException |
InvalidAlgorithmParameterException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
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