Java tutorial
/******************************************************************************* * Copyright (C) 2010 Marco Sandrini * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public * License along with this program. * If not, see <http://www.gnu.org/licenses/>. ******************************************************************************/ package org.casbah.provider; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNotNull; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.security.spec.RSAPrivateCrtKeySpec; import org.apache.commons.io.IOUtils; import org.junit.Test; public class PKCS1EncodedKeySpecTest { @Test public void testToRsaKeySpec() throws IOException, CAProviderException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); IOUtils.copy(this.getClass().getResourceAsStream("/caplaintext.key"), baos); byte[] encodedKey = baos.toByteArray(); PKCS1EncodedKeySpec encodedKeySpec = new PKCS1EncodedKeySpec(encodedKey); RSAPrivateCrtKeySpec privateKeySpec = encodedKeySpec.toRsaKeySpec(); assertNotNull(privateKeySpec); assertEquals(TestKeyValues.MODULUS, privateKeySpec.getModulus()); assertEquals(TestKeyValues.PUBLIC_EXPONENT, privateKeySpec.getPublicExponent()); assertEquals(TestKeyValues.PRIVATE_EXPONENT, privateKeySpec.getPrivateExponent()); assertEquals(TestKeyValues.PRIME1, privateKeySpec.getPrimeP()); assertEquals(TestKeyValues.PRIME2, privateKeySpec.getPrimeQ()); assertEquals(TestKeyValues.EXPONENT1, privateKeySpec.getPrimeExponentP()); assertEquals(TestKeyValues.EXPONENT2, privateKeySpec.getPrimeExponentQ()); assertEquals(TestKeyValues.COEFFICIENT, privateKeySpec.getCrtCoefficient()); } }