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/*
* Copyright (c) 2014, 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 8014374
* @summary Test basic CipherInputStream/OutputStream func w/ GCM mode.
* @author Valerie Peng
* @key randomness
*/
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.math.*;
import java.io.*;
import java.util.*;
public class TestCICOWithGCM extends UcryptoTest {
public static void main(String[] args) throws Exception {
main(new TestCICOWithGCM(), null);
}
public void doTest(Provider p) throws Exception {
// check if GCM support exists
try {
Cipher.getInstance("AES/GCM/NoPadding", p);
} catch (NoSuchAlgorithmException nsae) {
System.out.println("Skipping Test due to no GCM support");
return;
}
Random rdm = new Random();
//init Secret Key
byte[] keyValue = new byte[16];
rdm.nextBytes(keyValue);
SecretKey key = new SecretKeySpec(keyValue, "AES");
//do initialization of the plainText
byte[] plainText = new byte[800];
rdm.nextBytes(plainText);
//init ciphers
Cipher encCipher = Cipher.getInstance("AES/GCM/NoPadding", p);
encCipher.init(Cipher.ENCRYPT_MODE, key);
Cipher decCipher = Cipher.getInstance("AES/GCM/NoPadding", p);
decCipher.init(Cipher.DECRYPT_MODE, key, encCipher.getParameters());
//init cipher streams
ByteArrayInputStream baInput = new ByteArrayInputStream(plainText);
CipherInputStream ciInput = new CipherInputStream(baInput, encCipher);
ByteArrayOutputStream baOutput = new ByteArrayOutputStream();
CipherOutputStream ciOutput = new CipherOutputStream(baOutput, decCipher);
//do test
byte[] buffer = new byte[800];
int len = ciInput.read(buffer);
System.out.println("read " + len + " bytes from input buffer");
while (len != -1) {
ciOutput.write(buffer, 0, len);
System.out.println("wite " + len + " bytes to output buffer");
len = ciInput.read(buffer);
if (len != -1) {
System.out.println("read " + len + " bytes from input buffer");
} else {
System.out.println("finished reading");
}
}
ciOutput.flush();
ciInput.close();
ciOutput.close();
byte[] recovered = baOutput.toByteArray();
System.out.println("recovered " + recovered.length + " bytes");
if (!Arrays.equals(plainText, recovered)) {
throw new RuntimeException("diff check failed!");
} else {
System.out.println("diff check passed");
}
}
}
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