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package com.netscape.certsrv.util;
import java.io.File;
import java.security.GeneralSecurityException;
import java.security.NoSuchAlgorithmException;
import org.mozilla.jss.CertDatabaseException;
import org.mozilla.jss.CryptoManager;
import org.mozilla.jss.CryptoManager.NotInitializedException;
import org.mozilla.jss.KeyDatabaseException;
import org.mozilla.jss.crypto.AlreadyInitializedException;
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.SymmetricKey;
import org.mozilla.jss.crypto.TokenException;
import org.mozilla.jss.util.IncorrectPasswordException;
import org.mozilla.jss.util.Password;
import com.netscape.certsrv.client.ClientConfig;
import com.netscape.certsrv.key.KeyRequestResource;
import com.netscape.cmsutil.crypto.CryptoUtil;
public class NSSCryptoProvider extends CryptoProvider {
private CryptoManager manager;
private CryptoToken token;
private File certDBDir;
private String certDBPassword;
public CryptoManager getManager() {
return manager;
}
public void setManager(CryptoManager manager) {
this.manager = manager;
}
public CryptoToken getToken() {
return token;
}
public void setToken(CryptoToken token) {
this.token = token;
}
public NSSCryptoProvider(ClientConfig config)
throws Exception {
if (config == null) {
throw new IllegalArgumentException("ClientConfig object must be specified.");
}
if ((config.getCertDatabase() == null) || (config.getCertPassword() == null)) {
throw new IllegalArgumentException(" Both the db directory path and the password must be specified.");
}
this.certDBDir = new File(config.getCertDatabase());
if (this.certDBDir.exists()) {
if (!this.certDBDir.isDirectory())
throw new IllegalArgumentException("Cert database must be a directory.");
}
this.certDBDir.mkdir();
this.certDBPassword = config.getCertPassword();
initialize();
}
/**
* Initializes the NSS DB.
*
*/
@Override
public void initialize() throws Exception {
if ((certDBDir == null) || (certDBPassword == null)) {
throw new Exception("NSS db location and password need to be specified.");
}
try {
CryptoManager.initialize(certDBDir.getAbsolutePath());
} catch (AlreadyInitializedException e) {
// Can be ignored since it is just for getting the token
} catch (KeyDatabaseException | CertDatabaseException | GeneralSecurityException e1) {
throw e1;
}
try {
manager = CryptoManager.getInstance();
token = manager.getInternalKeyStorageToken();
Password password = new Password(certDBPassword.toCharArray());
try {
token.login(password);
} catch (IncorrectPasswordException | TokenException e) {
if (!token.isLoggedIn()) {
token.initPassword(password, password);
}
}
} catch (AlreadyInitializedException e1) {
//Ignore
} catch (NotInitializedException | TokenException | IncorrectPasswordException e2) {
throw e2;
}
}
@Override
public SymmetricKey generateSymmetricKey(String keyAlgorithm, int keySize) throws Exception {
if (token == null) {
throw new NotInitializedException();
}
return CryptoUtil.generateKey(token, getKeyGenAlgorithm(keyAlgorithm), keySize);
}
@Override
public SymmetricKey generateSessionKey() throws Exception {
return generateSymmetricKey(KeyRequestResource.DES3_ALGORITHM, 168);
}
@Override
public byte[] wrapSessionKeyWithTransportCert(SymmetricKey sessionKey, String transportCert) throws Exception {
if ((manager == null) || (token == null)) {
throw new NotInitializedException();
}
return CryptoUtil.wrapSymmetricKey(manager, token, transportCert, sessionKey);
}
@Override
public byte[] wrapUsingSessionKey(String passphrase, byte[] iv, SymmetricKey key, String encryptionAlgorithm)
throws Exception {
if (token == null) {
throw new NotInitializedException();
}
return CryptoUtil.wrapPassphrase(token, passphrase, new IVParameterSpec(iv), key,
getEncryptionAlgorithm(encryptionAlgorithm));
}
@Override
public String unwrapUsingSessionKey(byte[] wrappedRecoveredKey, SymmetricKey recoveryKey,
String encryptionAlgorithm, byte[] nonceData) throws Exception {
if (token == null) {
throw new NotInitializedException();
}
return CryptoUtil.unwrapUsingSymmetricKey(token, new IVParameterSpec(nonceData), wrappedRecoveredKey,
recoveryKey,
getEncryptionAlgorithm(encryptionAlgorithm));
}
@Override
public String unWrapUsingPassphrase(String wrappedRecoveredKey, String recoveryPassphrase) throws Exception {
return CryptoUtil.unwrapUsingPassphrase(wrappedRecoveredKey, recoveryPassphrase);
}
public KeyGenAlgorithm getKeyGenAlgorithm(String keyAlgorithm) throws NoSuchAlgorithmException {
if (keyAlgorithm == null) {
return KeyGenAlgorithm.DES3;
}
KeyGenAlgorithm alg = null;
switch (keyAlgorithm) {
case KeyRequestResource.AES_ALGORITHM:
alg = KeyGenAlgorithm.AES;
break;
case KeyRequestResource.DES_ALGORITHM:
alg = KeyGenAlgorithm.DES;
break;
case KeyRequestResource.DESEDE_ALGORITHM:
alg = KeyGenAlgorithm.DESede;
break;
case KeyRequestResource.RC2_ALGORITHM:
alg = KeyGenAlgorithm.RC2;
break;
case KeyRequestResource.RC4_ALGORITHM:
alg = KeyGenAlgorithm.RC4;
break;
case KeyRequestResource.DES3_ALGORITHM:
alg = KeyGenAlgorithm.DES3;
break;
default:
throw new NoSuchAlgorithmException("No Algorithm named: " + keyAlgorithm);
}
return alg;
}
public EncryptionAlgorithm getEncryptionAlgorithm(String encryptionAlgorithm) throws NoSuchAlgorithmException {
if (encryptionAlgorithm == null) {
return EncryptionAlgorithm.DES3_CBC_PAD;
}
EncryptionAlgorithm alg = null;
switch (encryptionAlgorithm) {
case KeyRequestResource.AES_ALGORITHM:
alg = EncryptionAlgorithm.AES_CBC_PAD;
break;
case KeyRequestResource.DES_ALGORITHM:
alg = EncryptionAlgorithm.DES_CBC_PAD;
break;
case KeyRequestResource.RC2_ALGORITHM:
alg = EncryptionAlgorithm.RC2_CBC_PAD;
break;
case KeyRequestResource.RC4_ALGORITHM:
alg = EncryptionAlgorithm.RC4;
break;
case KeyRequestResource.DES3_ALGORITHM:
alg = EncryptionAlgorithm.DES3_CBC_PAD;
break;
default:
throw new NoSuchAlgorithmException("No Algorithm named: " + encryptionAlgorithm);
}
return alg;
}
}
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