| /* |
| * Copyright (c) 2020, 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 |
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| */ |
| |
| /** |
| * @test |
| * @bug 8216012 |
| * @summary Tests the RSA public key exponent for KeyPairGenerator |
| * @run main/timeout=60 TestKeyPairGeneratorExponent |
| */ |
| |
| import java.math.BigInteger; |
| |
| import java.security.*; |
| import java.security.interfaces.*; |
| import java.security.spec.*; |
| |
| public class TestKeyPairGeneratorExponent { |
| private static int keyLen = 512; |
| |
| private static BigInteger[] validExponents = new BigInteger[] { |
| RSAKeyGenParameterSpec.F0, |
| RSAKeyGenParameterSpec.F4, |
| BigInteger.ONE.shiftLeft(keyLen - 1).subtract(BigInteger.ONE) |
| }; |
| |
| private static BigInteger[] invalidExponents = new BigInteger[] { |
| BigInteger.valueOf(-1), |
| BigInteger.ZERO, |
| BigInteger.ONE, |
| // without this fix, an even value causes an infinite loop |
| BigInteger.valueOf(4) |
| }; |
| |
| public static void testValidExponents(KeyPairGenerator kpg, |
| BigInteger exponent) { |
| System.out.println("Testing exponent = " + exponent.toString(16)); |
| try { |
| kpg.initialize(new RSAKeyGenParameterSpec(keyLen, exponent)); |
| kpg.generateKeyPair(); |
| System.out.println("OK, key pair generated"); |
| } catch(InvalidAlgorithmParameterException iape){ |
| throw new RuntimeException("Error: Unexpected Exception: " + iape); |
| } |
| } |
| |
| public static void testInvalidExponents(KeyPairGenerator kpg, |
| BigInteger exponent) { |
| System.out.println("Testing exponent = " + exponent.toString(16)); |
| try { |
| kpg.initialize(new RSAKeyGenParameterSpec(keyLen, exponent)); |
| kpg.generateKeyPair(); |
| throw new RuntimeException("Error: Expected IAPE not thrown."); |
| } catch(InvalidAlgorithmParameterException iape){ |
| // Expected InvalidAlgorithmParameterException was thrown |
| System.out.println("OK, expected IAPE thrown"); |
| } catch(Exception e) { |
| e.printStackTrace(); |
| throw new RuntimeException("Error: unexpected exception " + e); |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| KeyPairGenerator kpg = |
| KeyPairGenerator.getInstance("RSA", "SunRsaSign"); |
| |
| for(BigInteger validExponent : validExponents) { |
| testValidExponents(kpg, validExponent); |
| } |
| |
| for(BigInteger invalidExponent : invalidExponents) { |
| testInvalidExponents(kpg, invalidExponent); |
| } |
| } |
| } |