org.xdi.oxauth.crypto.cert.CertificateParser.java Source code

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Here is the source code for org.xdi.oxauth.crypto.cert.CertificateParser.java

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/*
 * oxAuth is available under the MIT License (2008). See http://opensource.org/licenses/MIT for full text.
 *
 * Copyright (c) 2014, Gluu
 */

package org.xdi.oxauth.crypto.cert;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.security.NoSuchProviderException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.IOUtils;
import org.bouncycastle.jce.provider.X509CertificateObject;
import org.bouncycastle.openssl.PEMReader;

public class CertificateParser {

    public static X509Certificate parsePem(String pemEncodedCert) throws CertificateException {
        StringReader sr = new StringReader(pemEncodedCert);
        PEMReader pemReader = new PEMReader(sr);
        try {
            X509Certificate cert = (X509CertificateObject) pemReader.readObject();

            return cert;
        } catch (IOException ex) {
            throw new CertificateException(ex);
        } finally {
            IOUtils.closeQuietly(pemReader);
        }
    }

    public static X509Certificate parseDer(String base64DerEncodedCert) throws CertificateException {
        return parseDer(Base64.decodeBase64(base64DerEncodedCert));
    }

    public static X509Certificate parseDer(byte[] derEncodedCert) throws CertificateException {
        return parseDer(new ByteArrayInputStream(derEncodedCert));
    }

    public static X509Certificate parseDer(InputStream is) throws CertificateException {
        try {
            return (X509Certificate) CertificateFactory.getInstance("X.509", "BC").generateCertificate(is);
        } catch (NoSuchProviderException ex) {
            throw new CertificateException(ex);
        }
    }
}