/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.waveprotocol.wave.crypto;
import org.apache.commons.codec.binary.Base64;
import java.io.ByteArrayInputStream;
import java.security.GeneralSecurityException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.security.spec.EncodedKeySpec;
import java.security.spec.PKCS8EncodedKeySpec;
/**
* Parses byte arrays into certificates or private keys.
*/
public class CertUtil {
private CertUtil() {
}
public static X509Certificate getCertFromBase64Bytes(String b64cert)
throws GeneralSecurityException {
return getCertFromBytes(Base64.decodeBase64(b64cert.getBytes()));
}
public static X509Certificate getCertFromBytes(byte[] derCert) throws GeneralSecurityException {
CertificateFactory fac = CertificateFactory.getInstance("X509");
ByteArrayInputStream in = new ByteArrayInputStream(derCert);
X509Certificate cert = (X509Certificate)fac.generateCertificate(in);
return cert;
}
public static PrivateKey getPrivateKeyFromBytes(byte[] derKey) throws GeneralSecurityException {
KeyFactory fac = KeyFactory.getInstance("RSA");
EncodedKeySpec privKeySpec = new PKCS8EncodedKeySpec(derKey);
return fac.generatePrivate(privKeySpec);
}
}