Example usage for javax.crypto SecretKeyFactory generateSecret

Introduction

In this page you can find the example usage for javax.crypto SecretKeyFactory generateSecret.

Prototype

public final SecretKey generateSecret(KeySpec keySpec) throws InvalidKeySpecException 

Source Link

Document

Generates a SecretKey object from the provided key specification (key material).

Usage

From source file:com.ubipass.middleware.ems.EMSUtil.java

/**
 * set all licence parameters/*from   w  w  w.  j  av  a 2 s .c  o m*/
 * 
 * @throws Exception
 */
private static void setParameters() throws Exception {

    File file = new File(path + LICENCE_FILE);
    FileInputStream is;

    try {
        is = new FileInputStream(file);
    } catch (FileNotFoundException e) {
        throw new InvalidLicenseException();
    }

    Properties properties = new Properties();
    properties.load(is);

    userName = properties.getProperty("userName");
    licenceKey = properties.getProperty("licenceKey");

    if (userName == null || licenceKey == null) {
        throw new InvalidLicenseException();
    }

    // DES????
    SecureRandom sr = new SecureRandom();

    byte rawKeyData[] = (userName + "midware").getBytes();

    // ?DESKeySpec
    DESKeySpec dks = new DESKeySpec(rawKeyData);

    // ?DESKeySpec??
    // SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey key = keyFactory.generateSecret(dks);

    // Cipher??
    Cipher cipher = Cipher.getInstance("DES");

    // ?Cipher
    cipher.init(Cipher.DECRYPT_MODE, key, sr);

    // ??
    licenceKey = new String(cipher.doFinal(Base64.decodeBase64(licenceKey.getBytes())));

    String tmpStr[] = licenceKey.split("-");

    if (tmpStr.length != 2)
        throw new InvalidLicenseException();

    licenceUser = tmpStr[0];
    licenceExpDate = tmpStr[1];

}

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From source file:org.apache.nifi.security.util.crypto.CipherUtility.java

/**
 * Initializes a {@link Cipher} object with the given PBE parameters.
 *
 * @param algorithm      the algorithm/*  w  w w .  j  a v  a 2s.co m*/
 * @param provider       the JCA provider
 * @param password       the password
 * @param salt           the salt
 * @param iterationCount the KDF iteration count
 * @param encryptMode    true to encrypt; false to decrypt
 * @return the initialized Cipher
 * @throws IllegalArgumentException if any parameter is invalid
 */
public static Cipher initPBECipher(String algorithm, String provider, String password, byte[] salt,
        int iterationCount, boolean encryptMode) throws IllegalArgumentException {
    try {
        // Initialize secret key from password
        final PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
        final SecretKeyFactory factory = SecretKeyFactory.getInstance(algorithm, provider);
        SecretKey tempKey = factory.generateSecret(pbeKeySpec);

        final PBEParameterSpec parameterSpec = new PBEParameterSpec(salt, iterationCount);
        Cipher cipher = Cipher.getInstance(algorithm, provider);
        cipher.init(encryptMode ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, tempKey, parameterSpec);
        return cipher;
    } catch (NoSuchAlgorithmException | NoSuchProviderException | InvalidKeySpecException
            | NoSuchPaddingException | InvalidKeyException | InvalidAlgorithmParameterException e) {
        throw new IllegalArgumentException("One or more parameters to initialize the PBE cipher were invalid",
                e);
    }
}

---

From source file:net.sf.jftp.config.Crypto.java

public static String Encrypt(String str) {
    // create cryptography object
    SecretKeyFactory factory;
    try {/*from  ww  w. j av a2 s .co m*/
        factory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    } catch (NoSuchAlgorithmException e) {
        // We could try another algorithm, but it is highly unlikely that this would be the case
        return "";
    }

    // init key
    SecretKey key;

    try {
        key = factory.generateSecret(new PBEKeySpec(PASSWORD));
    } catch (InvalidKeySpecException e) {
        // The password is hard coded - this exception can't be the case
        return "";
    }

    // init cipher
    Cipher pbeCipher;
    try {
        pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    } catch (NoSuchPaddingException e) {
        // We could try another algorithm, but it is highly unlikely that this would be the case
        return "";
    } catch (NoSuchAlgorithmException e) {
        // We could try another algorithm, but it is highly unlikely that this would be the case
        return "";
    }

    try {
        pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    } catch (InvalidKeyException e) {
        return "";
    } catch (InvalidAlgorithmParameterException e) {
        return "";
    }

    // encode & return encoded string
    try {
        return base64Encode(pbeCipher.doFinal(str.getBytes()));
    } catch (IllegalBlockSizeException e) {
        return "";
    } catch (BadPaddingException e) {
        return "";
    }
}

---

From source file:LicenseGenerator.java

/**
 * // w w  w .j  a v  a2s  . c  o m
 * 
 * 
 * @param src
 *            ??
 * 
 * @param key
 *            8?
 * 
 * @return ??
 * 
 * @throws Exception
 * 
 */

public static byte[] encrypt(byte[] src, byte[] key) throws Exception {

    //DES????

    SecureRandom sr = new SecureRandom();

    // ? DESKeySpec

    DESKeySpec dks = new DESKeySpec(key);

    // ?DESKeySpec??

    // SecretKey

    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");

    SecretKey securekey = keyFactory.generateSecret(dks);

    // Cipher??

    Cipher cipher = Cipher.getInstance("DES");

    // Cipher

    cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

    // ??

    // ??

    return cipher.doFinal(src);

}

---

From source file:LicenseGenerator.java

/**
 * //from ww  w  .  j  av  a  2s.  c o  m
 * 
 * 
 * @param src
 *            ??
 * 
 * @param key
 *            8?
 * 
 * @return ??
 * 
 * @throws Exception
 * 
 */

public static byte[] decrypt(byte[] src, byte[] key) throws Exception {

    // DES????

    SecureRandom sr = new SecureRandom();

    // ?DESKeySpec

    DESKeySpec dks = new DESKeySpec(key);

    // ?DESKeySpec??

    // SecretKey

    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");

    SecretKey securekey = keyFactory.generateSecret(dks);

    // Cipher??

    Cipher cipher = Cipher.getInstance("DES");

    // Cipher

    cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

    // ??

    // ??

    return cipher.doFinal(src);

}

---

From source file:net.sf.jftp.config.Crypto.java

public static String Decrypt(String str) {
    // create cryptography object
    SecretKeyFactory keyFactory;
    try {/*from  w  w w  .  java 2 s .c o m*/
        keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    } catch (NoSuchAlgorithmException e) {
        // We could try another algorithm, but it is highly unlikely that this would be the case
        return "";
    }

    // init key
    SecretKey key;
    try {
        key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
    } catch (InvalidKeySpecException e) {
        return "";
    }

    // init cipher
    Cipher pbeCipher;
    try {
        pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    } catch (NoSuchAlgorithmException e) {
        return "";
    } catch (NoSuchPaddingException e) {
        return "";
    }

    try {
        pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    } catch (InvalidKeyException e) {
        return "";
    } catch (InvalidAlgorithmParameterException e) {
        return "";
    }

    // decode & return decoded string
    String dec;

    try {
        dec = new String(pbeCipher.doFinal(base64Decode(str)));
    } catch (IllegalBlockSizeException e) {
        return "";
    } catch (BadPaddingException e) {
        return "";
    } catch (IOException e) {
        return "";
    }

    return dec;
}

---

From source file:com.aurel.track.vc.bl.VersionControlBL.java

private static String encrypt(String clearText, char[] password) {
    // Create PBE parameter set
    PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, count);
    byte[] ciphertext = { 0 };

    PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
    try {/*  www  .  jav  a  2s .co m*/
        SecretKeyFactory keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);

        // Create PBE Cipher
        Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");

        // Initialize PBE Cipher with key and parameters
        pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);

        // Encrypt the cleartext
        ciphertext = pbeCipher.doFinal(clearText.getBytes());
    } catch (Exception e) {
        LOGGER.error(ExceptionUtils.getStackTrace(e));
    }
    return new String(Base64.encodeBase64String(ciphertext));
}

---

From source file:org.jasig.cas.extension.clearpass.EncryptedMapDecorator.java

private static Key getSecretKey(final String secretKeyAlgorithm, final String secretKey, final String salt)
        throws Exception {

    SecretKeyFactory factory = SecretKeyFactory.getInstance(SECRET_KEY_FACTORY_ALGORITHM);
    KeySpec spec = new PBEKeySpec(secretKey.toCharArray(), char2byte(salt), 65536, 128);
    SecretKey tmp = factory.generateSecret(spec);
    SecretKey secret = new SecretKeySpec(tmp.getEncoded(), secretKeyAlgorithm);

    return secret;
}

---

From source file:com.glaf.core.security.SecurityUtils.java

/**
 * ??/* w  w w.  j a  v  a  2  s  .  c  o m*/
 * 
 * @param ctx
 *            
 * @param envelope
 *            ?
 * @param privateKey
 *            ?
 * @return key 
 */
public static Key openDigitalEnvelope(SecurityContext ctx, String envelope, Key privateKey) {
    try {
        Cipher cipher = Cipher.getInstance(ctx.getAsymmetryAlgorithm(), ctx.getJceProvider());
        cipher.init(Cipher.DECRYPT_MODE, privateKey);
        envelope = StringTools.replaceIgnoreCase(envelope, " ", "");
        byte[] key = cipher.doFinal(Base64.decodeBase64(envelope));

        SecretKeyFactory skf = SecretKeyFactory.getInstance(ctx.getSymmetryKeyAlgorithm(),
                ctx.getJceProvider());
        DESKeySpec keySpec = new DESKeySpec(key);
        Key symmetryKey = skf.generateSecret(keySpec);

        return symmetryKey;
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}

---

From source file:com.jrummyapps.busybox.signing.ZipSigner.java

/**
 * Decrypt an encrypted PKCS 8 format private key.
 *
 * Based on ghstark's post on Aug 6, 2006 at
 * http://forums.sun.com/thread.jspa?threadID=758133&messageID=4330949
 *
 * @param encryptedPrivateKey//from   w  w w  .ja v a2  s .c  o  m
 *     The raw data of the private key
 */
private static KeySpec decryptPrivateKey(final byte[] encryptedPrivateKey) throws GeneralSecurityException {
    EncryptedPrivateKeyInfo epkInfo;
    try {
        epkInfo = new EncryptedPrivateKeyInfo(encryptedPrivateKey);
    } catch (final IOException ex) {
        // Probably not an encrypted key.
        return null;
    }

    final String pass = "android";
    final char[] password = pass.toCharArray();
    final SecretKeyFactory skFactory = SecretKeyFactory.getInstance(epkInfo.getAlgName());
    final Key key = skFactory.generateSecret(new PBEKeySpec(password));
    final Cipher cipher = Cipher.getInstance(epkInfo.getAlgName());
    cipher.init(Cipher.DECRYPT_MODE, key, epkInfo.getAlgParameters());

    try {
        return epkInfo.getKeySpec(cipher);
    } catch (final InvalidKeySpecException ex) {
        Log.e(TAG, "Password for keyFile may be bad.", ex);
        return null;
    }
}

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