package gnu.testlet.gnu.crypto.jce;
// --------------------------------------------------------------------------
// $Id: TestOfMessageDigest.java,v 1.4 2005/10/06 04:24:19 rsdio Exp $
//
// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
//
// This file is part of GNU Crypto.
//
// GNU Crypto is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// GNU Crypto 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 for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to the
//
// Free Software Foundation Inc.,
// 51 Franklin Street, Fifth Floor,
// Boston, MA 02110-1301
// USA
//
// Linking this library statically or dynamically with other modules is
// making a combined work based on this library. Thus, the terms and
// conditions of the GNU General Public License cover the whole
// combination.
//
// As a special exception, the copyright holders of this library give
// you permission to link this library with independent modules to
// produce an executable, regardless of the license terms of these
// independent modules, and to copy and distribute the resulting
// executable under terms of your choice, provided that you also meet,
// for each linked independent module, the terms and conditions of the
// license of that module. An independent module is a module which is
// not derived from or based on this library. If you modify this
// library, you may extend this exception to your version of the
// library, but you are not obligated to do so. If you do not wish to
// do so, delete this exception statement from your version.
// ----------------------------------------------------------------------------
// Tags: GNU-CRYPTO
import gnu.crypto.Registry;
import gnu.crypto.hash.HashFactory;
import gnu.crypto.hash.IMessageDigest;
import gnu.crypto.jce.GnuSecurity;
import gnu.crypto.util.Util;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.security.MessageDigest;
import java.security.Security;
import java.util.Arrays;
import java.util.Iterator;
/**
* <p>Conformance tests for the JCE Provider implementations of MessageDigest
* SPI classes.</p>
*
* @version $Revision: 1.4 $
*/
public class TestOfMessageDigest implements Testlet {
// Constants and variables
// -------------------------------------------------------------------------
// Constructor(s)
// -------------------------------------------------------------------------
// default 0-arguments constructor
// Class methods
// -------------------------------------------------------------------------
// Instance methods
// -------------------------------------------------------------------------
public void test(TestHarness harness) {
setUp();
testUnknownHash(harness);
testEquality(harness);
testCloneability(harness);
}
/** Should fail with an unknown algorithm. */
public void testUnknownHash(TestHarness harness) {
harness.checkPoint("testUnknownHash");
try {
MessageDigest.getInstance("Gaudot", Registry.GNU_SECURITY);
harness.fail("testUnknownHash()");
} catch (Exception x) {
harness.check(true);
}
}
/**
* Tests if the result of using a hash through gnu.crypto Factory classes
* yields same value as using instances obtained the JCE way.
*/
public void testEquality(TestHarness harness) {
harness.checkPoint("testEquality");
String mdName;
IMessageDigest gnu = null;
MessageDigest jce = null;
byte[] in = this.getClass().getName().getBytes();
byte[] ba1, ba2;
for (Iterator it = HashFactory.getNames().iterator(); it.hasNext(); ) {
mdName = (String) it.next();
try {
gnu = HashFactory.getInstance(mdName);
harness.check(gnu != null, "HashFactory.getInstance("+mdName+")");
} catch (InternalError x) {
harness.fail("HashFactory.getInstance("+mdName+"): "+String.valueOf(x));
}
try {
jce = MessageDigest.getInstance(mdName, Registry.GNU_SECURITY);
harness.check(jce != null, "MessageDigest.getInstance()");
} catch (Exception x) {
harness.debug(x);
harness.fail("MessageDigest.getInstance("+mdName+"): "+String.valueOf(x));
}
gnu.update(in, 0, in.length);
ba1 = gnu.digest();
ba2 = jce.digest(in);
harness.check(Arrays.equals(ba1, ba2), "testEquality("+mdName+")");
}
}
/**
* Tests if the result of a cloned, partially in-progress hash instance, when
* used later to further process data, yields the same result as the original
* copy.
*/
public void testCloneability(TestHarness harness) {
harness.checkPoint("testCloneability");
String mdName;
MessageDigest md1, md2;
byte[] abc = "abc".getBytes();
byte[] in = this.getClass().getName().getBytes();
byte[] ba1, ba2;
for (Iterator it = GnuSecurity.getMessageDigestNames().iterator(); it.hasNext(); ) {
mdName = (String) it.next();
try {
md1 = MessageDigest.getInstance(mdName, Registry.GNU_SECURITY);
md1.update(abc); // start with abc
md2 = (MessageDigest) md1.clone(); // now clone it
ba1 = md1.digest(in); // now finish both with in
ba2 = md2.digest(in);
harness.check(Arrays.equals(ba1, ba2), "testCloneability("+mdName+")");
} catch (Exception x) {
harness.debug(x);
harness.fail("testCloneability("+mdName+"): "+String.valueOf(x));
}
}
}
// helper methods ----------------------------------------------------------
private void setUp() {
Security.addProvider(new GnuSecurity()); // dynamically adds our provider
}
}