be.fedict.trust.MemoryCertificateRepository.java Source code

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Here is the source code for be.fedict.trust.MemoryCertificateRepository.java

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/*
 * Java Trust Project.
 * Copyright (C) 2009 FedICT.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, see 
 * http://www.gnu.org/licenses/.
 */

package be.fedict.trust;

import java.security.cert.CertificateEncodingException;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.codec.digest.DigestUtils;

/**
 * In-Memory Certificate Repository implementation.
 * 
 * @author Frank Cornelis
 * 
 */
public class MemoryCertificateRepository implements CertificateRepository {

    private final Map<String, X509Certificate> trustPoints;

    /**
     * Default constructor.
     */
    public MemoryCertificateRepository() {
        this.trustPoints = new HashMap<String, X509Certificate>();
    }

    /**
     * Adds a trust point to this certificate repository.
     * 
     * @param certificate
     *            the X509 trust point certificate.
     */
    public void addTrustPoint(X509Certificate certificate) {
        String fingerprint = getFingerprint(certificate);
        this.trustPoints.put(fingerprint, certificate);
    }

    public boolean isTrustPoint(X509Certificate certificate) {
        String fingerprint = getFingerprint(certificate);
        X509Certificate trustPoint = this.trustPoints.get(fingerprint);
        if (null == trustPoint) {
            return false;
        }
        try {
            /*
             * We cannot used certificate.equals(trustPoint) here as the
             * certificates might be loaded by different security providers.
             */
            return Arrays.equals(certificate.getEncoded(), trustPoint.getEncoded());
        } catch (CertificateEncodingException e) {
            throw new IllegalArgumentException("certificate encoding error: " + e.getMessage(), e);
        }
    }

    private String getFingerprint(X509Certificate certificate) {
        byte[] encodedCertificate;
        try {
            encodedCertificate = certificate.getEncoded();
        } catch (CertificateEncodingException e) {
            throw new IllegalArgumentException("certificate encoding error: " + e.getMessage(), e);
        }
        String fingerprint = DigestUtils.shaHex(encodedCertificate);
        return fingerprint;
    }
}