com.aqnote.shared.cryptology.cert.util.CertificateUtil.java Source code

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Here is the source code for com.aqnote.shared.cryptology.cert.util.CertificateUtil.java

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/*
 * Copyright 2013-2023 "Peng Li"<aqnote@qq.com>
 * Licensed under the AQNote License, Version 1.0 (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.aqnote.com/licenses/LICENSE-1.0
 *
 * 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 com.aqnote.shared.cryptology.cert.util;

import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;

import org.bouncycastle.asn1.x500.RDN;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x500.style.BCStyle;
import org.bouncycastle.asn1.x500.style.IETFUtils;
import org.bouncycastle.cert.jcajce.JcaX509CertificateHolder;

/**
 * CertUtil.java????
 * 
 * @author "Peng Li"<aqnote@qq.com> Nov 19, 2013 7:37:00 PM
 */
public class CertificateUtil {

    public static String getValue(RDN rdn) {
        if (rdn == null)
            return null;
        return IETFUtils.valueToString(rdn.getFirst().getValue());
    }

    public static X500Name getSubject(X509Certificate cert) throws CertificateEncodingException {
        return new JcaX509CertificateHolder(cert).getSubject();
    }

    public static X500Name getIssuer(X509Certificate cert) throws CertificateEncodingException {
        return new JcaX509CertificateHolder(cert).getIssuer();
    }

    public static String getSubjectEmail(X509Certificate cert) throws CertificateEncodingException {
        if (cert == null)
            return null;
        X500Name x500name = new JcaX509CertificateHolder(cert).getSubject();
        return getValue(x500name.getRDNs(BCStyle.E)[0]);
    }

    public static String getSubjectCN(X509Certificate cert) throws CertificateEncodingException {
        if (cert == null)
            return null;
        X500Name x500name = new JcaX509CertificateHolder(cert).getSubject();
        return getValue(x500name.getRDNs(BCStyle.CN)[0]);
    }

    public static String getSubjectTitle(X509Certificate cert) throws CertificateEncodingException {
        if (cert == null)
            return null;
        X500Name x500name = new JcaX509CertificateHolder(cert).getSubject();
        return getValue(x500name.getRDNs(BCStyle.T)[0]);
    }

    public static String getIssuerEmail(X509Certificate cert) throws CertificateEncodingException {
        if (cert == null)
            return null;
        X500Name x500name = new JcaX509CertificateHolder(cert).getIssuer();
        return getValue(x500name.getRDNs(BCStyle.E)[0]);
    }

    public static String getIssuerCN(X509Certificate cert) throws CertificateEncodingException {
        if (cert == null)
            return null;
        X500Name x500name = new JcaX509CertificateHolder(cert).getIssuer();
        return getValue(x500name.getRDNs(BCStyle.CN)[0]);
    }

    public static String getIssuerTitle(X509Certificate cert) throws CertificateEncodingException {
        if (cert == null)
            return null;
        X500Name x500name = new JcaX509CertificateHolder(cert).getIssuer();
        return getValue(x500name.getRDNs(BCStyle.T)[0]);
    }

}