Java tutorial
/* * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package io.airlift.security.csr; import org.bouncycastle.asn1.DERSet; import org.bouncycastle.asn1.x500.X500Name; import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo; import org.testng.annotations.Test; import javax.security.auth.x500.X500Principal; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.security.Signature; import java.security.spec.ECGenParameterSpec; import static com.google.common.io.BaseEncoding.base16; import static io.airlift.security.csr.SignatureAlgorithmIdentifier.findSignatureAlgorithmIdentifier; import static org.testng.Assert.assertEquals; import static org.testng.Assert.assertTrue; public class TestCertificationRequestInfo { @Test public void test() throws Exception { // test only with state because BC encodes every other value using UTF8String instead of PrintableString used by the JDK String name = "C=country"; KeyPairGenerator generator = KeyPairGenerator.getInstance("EC"); generator.initialize(new ECGenParameterSpec("secp256r1")); KeyPair keyPair = generator.generateKeyPair(); CertificationRequestInfo actualInfo = new CertificationRequestInfo(new X500Principal(name), keyPair.getPublic()); assertEquals(actualInfo.getPublicKey(), keyPair.getPublic()); assertEquals(actualInfo.getSubject().getName(), name); assertEquals(actualInfo, actualInfo); assertEquals(actualInfo.hashCode(), actualInfo.hashCode()); org.bouncycastle.asn1.pkcs.CertificationRequestInfo expectedInfo = new org.bouncycastle.asn1.pkcs.CertificationRequestInfo( new X500Name(name), SubjectPublicKeyInfo.getInstance(keyPair.getPublic().getEncoded()), new DERSet()); assertEquals(base16().encode(actualInfo.getEncoded()), base16().encode(expectedInfo.getEncoded("DER"))); SignatureAlgorithmIdentifier signatureAlgorithmIdentifier = findSignatureAlgorithmIdentifier( "SHA256withECDSA"); byte[] actualSignature = actualInfo.sign(signatureAlgorithmIdentifier, keyPair.getPrivate()); Signature signature = Signature.getInstance(signatureAlgorithmIdentifier.getName()); signature.initVerify(keyPair.getPublic()); signature.update(actualInfo.getEncoded()); assertTrue(signature.verify(actualSignature)); } }