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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2016 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package netscape.security.pkcs;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.security.MessageDigest;
import java.util.logging.Logger;
import org.mozilla.jss.CryptoManager;
import org.mozilla.jss.asn1.ASN1Util;
import org.mozilla.jss.asn1.ASN1Value;
import org.mozilla.jss.asn1.BMPString;
import org.mozilla.jss.asn1.OCTET_STRING;
import org.mozilla.jss.asn1.SEQUENCE;
import org.mozilla.jss.asn1.SET;
import org.mozilla.jss.crypto.Cipher;
import org.mozilla.jss.crypto.CryptoStore;
import org.mozilla.jss.crypto.CryptoToken;
import org.mozilla.jss.crypto.EncryptionAlgorithm;
import org.mozilla.jss.crypto.IVParameterSpec;
import org.mozilla.jss.crypto.KeyGenAlgorithm;
import org.mozilla.jss.crypto.KeyGenerator;
import org.mozilla.jss.crypto.KeyWrapAlgorithm;
import org.mozilla.jss.crypto.KeyWrapper;
import org.mozilla.jss.crypto.ObjectNotFoundException;
import org.mozilla.jss.crypto.PBEAlgorithm;
import org.mozilla.jss.crypto.PrivateKey;
import org.mozilla.jss.crypto.SymmetricKey;
import org.mozilla.jss.crypto.X509Certificate;
import org.mozilla.jss.pkcs12.AuthenticatedSafes;
import org.mozilla.jss.pkcs12.CertBag;
import org.mozilla.jss.pkcs12.PFX;
import org.mozilla.jss.pkcs12.PasswordConverter;
import org.mozilla.jss.pkcs12.SafeBag;
import org.mozilla.jss.pkix.primitive.EncryptedPrivateKeyInfo;
import org.mozilla.jss.pkix.primitive.PrivateKeyInfo;
import org.mozilla.jss.util.Password;
public class PKCS12Util {
private static Logger logger = Logger.getLogger(PKCS12Util.class.getName());
PFX pfx;
byte[] getEncodedKey(PrivateKey privateKey) throws Exception {
CryptoManager cm = CryptoManager.getInstance();
CryptoToken token = cm.getInternalKeyStorageToken();
KeyGenerator kg = token.getKeyGenerator(KeyGenAlgorithm.DES3);
SymmetricKey sk = kg.generate();
KeyWrapper wrapper = token.getKeyWrapper(KeyWrapAlgorithm.DES3_CBC_PAD);
byte[] iv = { 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1 };
IVParameterSpec param = new IVParameterSpec(iv);
wrapper.initWrap(sk, param);
byte[] enckey = wrapper.wrap(privateKey);
Cipher c = token.getCipherContext(EncryptionAlgorithm.DES3_CBC_PAD);
c.initDecrypt(sk, param);
return c.doFinal(enckey);
}
public void addKeyBag(PrivateKey privateKey, X509Certificate x509cert,
Password pass, byte[] localKeyID, SEQUENCE safeContents) throws Exception {
PasswordConverter passConverter = new PasswordConverter();
byte salt[] = { 0x01, 0x01, 0x01, 0x01 };
byte[] priData = getEncodedKey(privateKey);
PrivateKeyInfo pki = (PrivateKeyInfo)
ASN1Util.decode(PrivateKeyInfo.getTemplate(), priData);
ASN1Value key = EncryptedPrivateKeyInfo.createPBE(
PBEAlgorithm.PBE_SHA1_DES3_CBC,
pass, salt, 1, passConverter, pki);
SET keyAttrs = createBagAttrs(
x509cert.getSubjectDN().toString(), localKeyID);
SafeBag keyBag = new SafeBag(SafeBag.PKCS8_SHROUDED_KEY_BAG,
key, keyAttrs);
safeContents.addElement(keyBag);
}
public byte[] addCertBag(X509Certificate x509cert, String nickname,
SEQUENCE safeContents) throws Exception {
ASN1Value cert = new OCTET_STRING(x509cert.getEncoded());
byte[] localKeyID = createLocalKeyID(x509cert);
SET certAttrs = null;
if (nickname != null)
certAttrs = createBagAttrs(nickname, localKeyID);
SafeBag certBag = new SafeBag(SafeBag.CERT_BAG,
new CertBag(CertBag.X509_CERT_TYPE, cert), certAttrs);
safeContents.addElement(certBag);
return localKeyID;
}
byte[] createLocalKeyID(X509Certificate cert) throws Exception {
// SHA1 hash of the X509Cert DER encoding
byte[] certDer = cert.getEncoded();
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(certDer);
return md.digest();
}
SET createBagAttrs(String nickname, byte localKeyID[])
throws Exception {
SET attrs = new SET();
SEQUENCE nicknameAttr = new SEQUENCE();
nicknameAttr.addElement(SafeBag.FRIENDLY_NAME);
SET nicknameSet = new SET();
nicknameSet.addElement(new BMPString(nickname));
nicknameAttr.addElement(nicknameSet);
attrs.addElement(nicknameAttr);
SEQUENCE localKeyAttr = new SEQUENCE();
localKeyAttr.addElement(SafeBag.LOCAL_KEY_ID);
SET localKeySet = new SET();
localKeySet.addElement(new OCTET_STRING(localKeyID));
localKeyAttr.addElement(localKeySet);
attrs.addElement(localKeyAttr);
return attrs;
}
public void loadFromNSS(Password password) throws Exception {
logger.info("Loading data from NSS database");
CryptoManager cm = CryptoManager.getInstance();
CryptoToken token = cm.getInternalKeyStorageToken();
CryptoStore store = token.getCryptoStore();
SEQUENCE encSafeContents = new SEQUENCE();
SEQUENCE safeContents = new SEQUENCE();
logger.fine("Loading certificates:");
X509Certificate[] certs = store.getCertificates();
for (X509Certificate cert : certs) {
String nickname = cert.getNickname();
try {
PrivateKey prikey = cm.findPrivKeyByCert(cert);
logger.fine(" - cert " + nickname + " with private key");
byte localKeyID[] = addCertBag(cert, nickname, safeContents);
addKeyBag(prikey, cert, password, localKeyID, encSafeContents);
} catch (ObjectNotFoundException e) {
logger.fine(" - cert " + nickname + " without private key");
addCertBag(cert, nickname, safeContents);
}
}
AuthenticatedSafes authSafes = new AuthenticatedSafes();
authSafes.addSafeContents(safeContents);
authSafes.addSafeContents(encSafeContents);
pfx = new PFX(authSafes);
}
public void storeIntoPKCS12(String filename, Password password) throws Exception {
logger.info("Storing data into PKCS #12 file");
pfx.computeMacData(password, null, 5);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
pfx.encode(bos);
byte[] data = bos.toByteArray();
try (FileOutputStream fos = new FileOutputStream(filename)) {
fos.write(data);
}
}
public void exportData(String filename, Password password) throws Exception {
loadFromNSS(password);
storeIntoPKCS12(filename, password);
}
}
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