be.fedict.hsm.model.KeyStoreLoaderBean.java Source code

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Here is the source code for be.fedict.hsm.model.KeyStoreLoaderBean.java

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/*
 * HSM Proxy Project.
 * Copyright (C) 2013 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.hsm.model;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.security.KeyStore;
import java.security.KeyStore.PrivateKeyEntry;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
import java.security.UnrecoverableEntryException;
import java.security.cert.CertificateException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

import javax.ejb.Local;
import javax.ejb.Stateless;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import sun.security.pkcs11.SunPKCS11;
import be.fedict.hsm.entity.KeyStoreEntity;
import be.fedict.hsm.entity.KeyStoreState;
import be.fedict.hsm.entity.KeyStoreType;

@Stateless
@Local(KeyStoreLoader.class)
public class KeyStoreLoaderBean implements KeyStoreLoader {

    private static final Log LOG = LogFactory.getLog(KeyStoreLoaderBean.class);

    @Override
    public Map<String, PrivateKeyEntry> loadKeyStore(KeyStoreEntity keyStoreEntity) {
        KeyStoreType keyStoreType = keyStoreEntity.getKeyStoreType();
        Map<String, PrivateKeyEntry> result;
        switch (keyStoreType) {
        case PKCS12:
            try {
                result = loadPKCS12(keyStoreEntity);
            } catch (Exception e) {
                LOG.error("error loading PKCS#12 key store: " + e.getMessage(), e);
                keyStoreEntity.setKeyStoreState(KeyStoreState.ERROR);
                return null;
            }
            break;
        case PKCS11:
            try {
                result = loadPKCS11(keyStoreEntity);
            } catch (Exception e) {
                LOG.error("error loading PKCS#11 key store: " + e.getMessage(), e);
                keyStoreEntity.setKeyStoreState(KeyStoreState.ERROR);
                return null;
            }
            break;
        default:
            throw new IllegalArgumentException("unsupported key store type: " + keyStoreType);
        }
        keyStoreEntity.setKeyStoreState(KeyStoreState.ACTIVE);
        return result;
    }

    private Map<String, PrivateKeyEntry> loadPKCS11(KeyStoreEntity keyStoreEntity) throws KeyStoreException,
            IOException, NoSuchAlgorithmException, CertificateException, UnrecoverableEntryException {
        File tmpConfigFile = File.createTempFile("pkcs11-", ".conf");
        tmpConfigFile.deleteOnExit();
        PrintWriter configWriter = new PrintWriter(new FileOutputStream(tmpConfigFile));
        configWriter.println("name=HSM-" + keyStoreEntity.getId());
        String path = keyStoreEntity.getPath();
        LOG.debug("PKCS11 path: " + path);
        LOG.debug("slot list index: " + keyStoreEntity.getSlotListIndex());
        configWriter.println("library=" + path);
        configWriter.println("slotListIndex=" + keyStoreEntity.getSlotListIndex());
        configWriter.close();
        SunPKCS11 sunPKCS11 = new SunPKCS11(tmpConfigFile.getAbsolutePath());
        LOG.debug("adding SunPKCS11 JCA provider: " + sunPKCS11.getName());
        /*
         * Reloads also need to work properly.
         */
        Security.removeProvider(sunPKCS11.getName());
        Security.addProvider(sunPKCS11);
        KeyStore keyStore = KeyStore.getInstance("PKCS11", sunPKCS11);
        if (null != keyStoreEntity.getPassword()) {
            keyStore.load(null, keyStoreEntity.getPassword().toCharArray());
        } else {
            keyStore.load(null, null);
        }
        String keyStorePassword = keyStoreEntity.getPassword();
        return loadKeys(keyStoreEntity, keyStore, keyStorePassword);
    }

    private Map<String, PrivateKeyEntry> loadPKCS12(KeyStoreEntity keyStoreEntity) throws KeyStoreException,
            NoSuchAlgorithmException, CertificateException, IOException, UnrecoverableEntryException {
        String keyStorePath = keyStoreEntity.getPath();
        InputStream keyStoreInputStream = new FileInputStream(keyStorePath);
        KeyStore keyStore = KeyStore.getInstance("PKCS12");
        String keyStorePassword = keyStoreEntity.getPassword();
        keyStore.load(keyStoreInputStream, keyStorePassword.toCharArray());
        return loadKeys(keyStoreEntity, keyStore, keyStorePassword);
    }

    private Map<String, PrivateKeyEntry> loadKeys(KeyStoreEntity keyStoreEntity, KeyStore keyStore,
            String keyStorePassword)
            throws KeyStoreException, NoSuchAlgorithmException, UnrecoverableEntryException {
        Enumeration<String> aliases = keyStore.aliases();
        Map<String, PrivateKeyEntry> keyStorePrivateKeys = new HashMap<String, PrivateKeyEntry>();
        while (aliases.hasMoreElements()) {
            String alias = aliases.nextElement();
            PrivateKeyEntry privateKeyEntry;
            if (null != keyStorePassword) {
                privateKeyEntry = (PrivateKeyEntry) keyStore.getEntry(alias,
                        new KeyStore.PasswordProtection(keyStorePassword.toCharArray()));
            } else {
                privateKeyEntry = (PrivateKeyEntry) keyStore.getEntry(alias, null);
            }
            keyStorePrivateKeys.put(alias, privateKeyEntry);
        }
        return keyStorePrivateKeys;
    }
}