/*
* Copyright ( c ) 2012 , 2015 , 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 .
*/
/*
* @ test
* @ bug 7044060 8042967
* @ run main / othervm / timeout = 250 TestDSA2
* @ summary verify that DSA signature works using SHA and SHA - 224 and
* SHA - 256 digests .
* @ key randomness
*/
import java.security.*;
import java.security.spec.*;
import java.security.interfaces.*;
public class TestDSA2 {
// NOTE: need to explictly specify provider since the more
// preferred provider SunPKCS11 provider only supports up
// 1024 bits.
private static final String PROV = "SUN" ;
private static final String[] SIG_ALGOS = {
"NONEwithDSA" ,
"SHA1withDSA" ,
"SHA224withDSA" ,
"SHA256withDSA" ,
"NONEwithDSAinP1363Format" ,
"SHA1withDSAinP1363Format" ,
"SHA224withDSAinP1363Format" ,
"SHA256withDSAinP1363Format"
};
private static final int [] KEYSIZES = {
1024 , 2048
};
public static void main(String[] args) throws Exception {
boolean [] expectedToPass = { true , true , true , true ,
true , true , true , true };
test(1024 , expectedToPass);
boolean [] expectedToPass2 = { true , false , true , true ,
true , false , true , true };
test(2048 , expectedToPass2);
}
private static void test(int keySize, boolean [] testStatus)
throws Exception {
// Raw DSA requires the data to be exactly 20 bytes long. Use a
// 20-byte array for these tests so that the NONEwithDSA* algorithms
// don't complain.
byte [] data = "12345678901234567890" .getBytes();
System.out.println("Test against key size: " + keySize);
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA" , PROV);
keyGen.initialize(keySize, new SecureRandom());
KeyPair pair = keyGen.generateKeyPair();
if (testStatus.length != SIG_ALGOS.length) {
throw new RuntimeException("TestError: incorrect status array!" );
}
for (int i = 0 ; i < SIG_ALGOS.length; i++) {
Signature dsa = Signature.getInstance(SIG_ALGOS[i], PROV);
try {
dsa.initSign(pair.getPrivate());
dsa.update(data);
byte [] sig = dsa.sign();
dsa.initVerify(pair.getPublic());
dsa.update(data);
boolean verifies = dsa.verify(sig);
if (verifies == testStatus[i]) {
System.out.println(SIG_ALGOS[i] + ": Passed" );
} else {
System.out.println(SIG_ALGOS[i] + ": should " +
(testStatus[i]? "pass" :"fail" ));
throw new RuntimeException(SIG_ALGOS[i] + ": Unexpected Test result!" );
}
} catch (Exception ex) {
if (testStatus[i]) {
ex.printStackTrace();
throw new RuntimeException(SIG_ALGOS[i] + ": Unexpected exception " + ex);
} else {
System.out.println(SIG_ALGOS[i] + ": Passed, expected " + ex);
}
}
}
}
}
Messung V0.5 in Prozent C=90 H=95 G=92
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
*© Formatika GbR, Deutschland