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* Copyright ( c ) 2015 , 2021 , 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
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*
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* 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
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*/
import java.security.*;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.*;
import java.util.*;
import java.util.stream.IntStream;
import static javax.crypto.Cipher.PRIVATE_KEY;
import static javax.crypto.Cipher.PUBLIC_KEY;
import jdk.test.lib.Asserts;
import jdk.test.lib.SigTestUtil;
import static jdk.test.lib.SigTestUtil.SignatureType;
/**
* @ test
* @ bug 8044199 8146293 8163498
* @ summary Ensure keys created from KeyFactory : : getKeySpec and from constructors
* are equal .
* Create a signature for RSA and get its signed data . re - initiate
* the signature with the public key . The signature can be verified
* by acquired signed data .
* @ library / test / lib . . / tools / keytool / fakegen
* @ build jdk . test . lib . SigTestUtil
* @ build java . base / sun . security . rsa . RSAKeyPairGenerator
* @ run main SignatureTest 512
* @ run main SignatureTest 768
* @ run main SignatureTest 1024
* @ run main SignatureTest 2048
* @ run main / timeout = 240 SignatureTest 4096
* @ run main / timeout = 240 SignatureTest 5120
* @ run main / timeout = 480 SignatureTest 6144
*/
public class SignatureTest {
/**
* ALGORITHM name , fixed as RSA .
*/
private static final String KEYALG = "RSA" ;
/**
* JDK default RSA Provider .
*/
private static final String PROVIDER = "SunRsaSign" ;
/**
* How much times signature updated .
*/
private static final int UPDATE_TIMES_FIFTY = 50 ;
/**
* How much times signature initial updated .
*/
private static final int UPDATE_TIMES_HUNDRED = 100 ;
public static void main(String[] args) throws Exception {
int keySize = Integer.parseInt(args[0 ]);
Iterable<String> md_alg_pkcs15 =
SigTestUtil.getDigestAlgorithms(SignatureType.RSA, keySize);
Iterable<String> md_alg_pss =
SigTestUtil.getDigestAlgorithms(SignatureType.RSASSA_PSS, keySize);
byte [] data = new byte [100 ];
IntStream.range(0 , data.length).forEach(j -> {
data[j] = (byte ) j;
});
// create a key pair
KeyPair kpair = generateKeys(KEYALG, keySize);
Key[] privs = manipulateKey(PRIVATE_KEY, kpair.getPrivate());
Key[] pubs = manipulateKey(PUBLIC_KEY, kpair.getPublic());
test(SignatureType.RSA, md_alg_pkcs15, privs, pubs, data);
test(SignatureType.RSASSA_PSS, md_alg_pss, privs, pubs, data);
}
private static void test(SignatureType type, Iterable<String> digestAlgs,
Key[] privs, Key[] pubs, byte [] data) throws RuntimeException {
// For signature algorithm, create and verify a signature
Arrays.stream(privs).forEach(priv
-> Arrays.stream(pubs).forEach(pub
-> digestAlgs.forEach(digestAlg -> {
try {
AlgorithmParameterSpec sigParams =
SigTestUtil.generateDefaultParameter(type, digestAlg);
String sigAlg = SigTestUtil.generateSigAlg(type, digestAlg);
checkSignature(data, (PublicKey) pub, (PrivateKey) priv,
sigAlg, sigParams);
} catch (NoSuchAlgorithmException | InvalidKeyException |
SignatureException | NoSuchProviderException |
InvalidAlgorithmParameterException ex) {
throw new RuntimeException(ex);
}
}
)));
}
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:
try {
kf.getKeySpec(key, RSAPrivateKeySpec.class );
throw new RuntimeException("Expected InvalidKeySpecException "
+ "not thrown" );
} catch (InvalidKeySpecException expected) {
}
RSAPublicKeySpec pubKeySpec1 = kf.getKeySpec(key, RSAPublicKeySpec.class );
RSAPublicKeySpec pubKeySpec2 = new RSAPublicKeySpec(
((RSAPublicKey) key).getModulus(),
((RSAPublicKey) key).getPublicExponent());
Asserts.assertTrue(keySpecEquals(pubKeySpec1, pubKeySpec2),
"Both RSAPublicKeySpec should be equal" );
X509EncodedKeySpec x509KeySpec1 = kf.getKeySpec(key, X509EncodedKeySpec.class );
X509EncodedKeySpec x509KeySpec2 = new X509EncodedKeySpec(key.getEncoded());
Asserts.assertTrue(encodedKeySpecEquals(x509KeySpec1, x509KeySpec2),
"Both X509EncodedKeySpec should be equal" );
return new Key[]{
key,
kf.generatePublic(pubKeySpec1),
kf.generatePublic(x509KeySpec1)
};
case PRIVATE_KEY:
try {
kf.getKeySpec(key, RSAPublicKeySpec.class );
throw new RuntimeException("Expected InvalidKeySpecException"
+ " not thrown" );
} catch (InvalidKeySpecException expected) {
}
RSAPrivateKeySpec privKeySpec1 = kf.getKeySpec(key, RSAPrivateKeySpec.class );
RSAPrivateKeySpec privKeySpec2 = new RSAPrivateKeySpec(
((RSAPrivateKey) key).getModulus(),
((RSAPrivateKey) key).getPrivateExponent());
Asserts.assertTrue(keySpecEquals(privKeySpec1, privKeySpec2),
"Both RSAPrivateKeySpec should be equal" );
PKCS8EncodedKeySpec pkcsKeySpec1 = kf.getKeySpec(key, PKCS8EncodedKeySpec.class );
PKCS8EncodedKeySpec pkcsKeySpec2 = new PKCS8EncodedKeySpec(key.getEncoded());
Asserts.assertTrue(encodedKeySpecEquals(pkcsKeySpec1, pkcsKeySpec2),
"Both PKCS8EncodedKeySpec should be equal" );
return new Key[]{
key,
kf.generatePrivate(privKeySpec1),
kf.generatePrivate(pkcsKeySpec1)
};
}
throw new RuntimeException("We shouldn't reach here" );
}
private static void checkSignature(byte [] data, PublicKey pub,
PrivateKey priv, String sigAlg, AlgorithmParameterSpec sigParams)
throws NoSuchAlgorithmException, InvalidKeyException,
SignatureException, NoSuchProviderException,
InvalidAlgorithmParameterException {
System.out.println("Testing " + sigAlg);
Signature sig = Signature.getInstance(sigAlg, PROVIDER);
sig.setParameter(sigParams);
sig.initSign(priv);
for (int i = 0 ; i < UPDATE_TIMES_HUNDRED; i++) {
sig.update(data);
}
byte [] signedData = sig.sign();
// Make sure signature verifies with original data
sig.setParameter(sigParams);
sig.initVerify(pub);
for (int i = 0 ; i < UPDATE_TIMES_HUNDRED; i++) {
sig.update(data);
}
if (!sig.verify(signedData)) {
throw new RuntimeException("Failed to verify " + sigAlg
+ " signature" );
}
// Make sure signature does NOT verify when the original data
// has changed
sig.initVerify(pub);
for (int i = 0 ; i < UPDATE_TIMES_FIFTY; i++) {
sig.update(data);
}
if (sig.verify(signedData)) {
throw new RuntimeException("Failed to detect bad " + sigAlg
+ " signature" );
}
}
private static boolean keySpecEquals(RSAPublicKeySpec spec1, RSAPublicKeySpec spec2) {
return spec1.getModulus().equals(spec2.getModulus())
&& spec1.getPublicExponent().equals(spec2.getPublicExponent())
&& Objects.equals(spec1.getParams(), spec2.getParams());
}
private static boolean keySpecEquals(RSAPrivateKeySpec spec1, RSAPrivateKeySpec spec2) {
return spec1.getModulus().equals(spec2.getModulus())
&& spec1.getPrivateExponent().equals(spec2.getPrivateExponent())
&& Objects.equals(spec1.getParams(), spec2.getParams());
}
private static boolean encodedKeySpecEquals(EncodedKeySpec spec1, EncodedKeySpec spec2) {
return Objects.equals(spec1.getAlgorithm(), spec2.getAlgorithm())
&& spec1.getFormat().equals(spec2.getFormat())
&& Arrays.equals(spec1.getEncoded(), spec2.getEncoded());
}
}
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¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
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