99 lines
3.7 KiB
Java
99 lines
3.7 KiB
Java
/*
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* Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8216012
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* @library /test/lib
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* @summary Tests the RSA public key exponent for KeyPairGenerator
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* @run main/timeout=60 TestKeyPairGeneratorExponent
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*/
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import java.math.BigInteger;
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import java.security.*;
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import java.security.interfaces.*;
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import java.security.spec.*;
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import jdk.test.lib.security.SecurityUtils;
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public class TestKeyPairGeneratorExponent {
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private static final String KPG_ALGORITHM = "RSA";
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private static final int KEY_LENGTH = SecurityUtils.getTestKeySize(KPG_ALGORITHM);
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private static BigInteger[] validExponents = new BigInteger[] {
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RSAKeyGenParameterSpec.F0,
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RSAKeyGenParameterSpec.F4,
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BigInteger.ONE.shiftLeft(KEY_LENGTH - 1).subtract(BigInteger.ONE)
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};
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private static BigInteger[] invalidExponents = new BigInteger[] {
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BigInteger.valueOf(-1),
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BigInteger.ZERO,
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BigInteger.ONE,
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// without this fix, an even value causes an infinite loop
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BigInteger.valueOf(4)
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};
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public static void testValidExponents(KeyPairGenerator kpg,
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BigInteger exponent) {
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System.out.println("Testing exponent = " + exponent.toString(16));
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try {
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kpg.initialize(new RSAKeyGenParameterSpec(KEY_LENGTH, exponent));
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kpg.generateKeyPair();
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System.out.println("OK, key pair generated");
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} catch(InvalidAlgorithmParameterException iape){
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throw new RuntimeException("Error: Unexpected Exception: " + iape);
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}
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}
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public static void testInvalidExponents(KeyPairGenerator kpg,
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BigInteger exponent) {
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System.out.println("Testing exponent = " + exponent.toString(16));
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try {
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kpg.initialize(new RSAKeyGenParameterSpec(KEY_LENGTH, exponent));
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kpg.generateKeyPair();
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throw new RuntimeException("Error: Expected IAPE not thrown.");
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} catch(InvalidAlgorithmParameterException iape){
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// Expected InvalidAlgorithmParameterException was thrown
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System.out.println("OK, expected IAPE thrown");
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} catch(Exception e) {
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e.printStackTrace();
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throw new RuntimeException("Error: unexpected exception " + e);
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}
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}
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public static void main(String[] args) throws Exception {
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KeyPairGenerator kpg =
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KeyPairGenerator.getInstance(KPG_ALGORITHM,
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System.getProperty("test.provider.name", "SunRsaSign"));
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for(BigInteger validExponent : validExponents) {
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testValidExponents(kpg, validExponent);
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}
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for(BigInteger invalidExponent : invalidExponents) {
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testInvalidExponents(kpg, invalidExponent);
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}
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}
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}
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