Example usage for javax.crypto SecretKeyFactory getInstance

Introduction

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

Prototype

public static final SecretKeyFactory getInstance(String algorithm) throws NoSuchAlgorithmException

Source Link

Document

Returns a SecretKeyFactory object that converts secret keys of the specified algorithm.

Usage

From source file:org.talend.commons.utils.PasswordEncryptUtil.java

private static SecretKey getSecretKey() throws Exception {
    if (key == null) {

        byte rawKeyData[] = rawKey.getBytes();
        DESKeySpec dks = new DESKeySpec(rawKeyData);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); //$NON-NLS-1$
        key = keyFactory.generateSecret(dks);
    }//from w  w  w. j a v a  2 s.com
    return key;
}

From source file:rs.htec.cms.cms_bulima.helper.Password.java

private static String hash(String password, byte[] salt) throws Exception {
    if (password == null || password.length() == 0) {
        throw new IllegalArgumentException("Password must have at least one character");
    }//from  www .j  a v a 2s.c  o m
    SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    SecretKey key = f.generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLen));
    return Base64.encodeBase64String(key.getEncoded());
}

From source file:Main.java

private static SecretKey getKeyFromPassphrase(String passphrase, byte[] salt) throws GeneralSecurityException {
    PBEKeySpec keyspec = new PBEKeySpec(passphrase.toCharArray(), salt, 100);
    SecretKeyFactory skf = SecretKeyFactory.getInstance("PBEWITHSHA1AND128BITAES-CBC-BC");
    return skf.generateSecret(keyspec);
}

From source file:Main.java

private static PKCS8EncodedKeySpec decryptPrivateKey(byte[] encryptedPrivateKey)
        throws GeneralSecurityException {
    EncryptedPrivateKeyInfo epkInfo;
    try {/*from w  w w .j  av  a  2s. co m*/
        epkInfo = new EncryptedPrivateKeyInfo(encryptedPrivateKey);
    } catch (IOException ex) {
        // Probably not an encrypted key.
        return null;
    }

    char[] password = System.console().readPassword("Password for the private key file: ");

    SecretKeyFactory skFactory = SecretKeyFactory.getInstance(epkInfo.getAlgName());
    Key key = skFactory.generateSecret(new PBEKeySpec(password));
    Arrays.fill(password, '\0');

    Cipher cipher = Cipher.getInstance(epkInfo.getAlgName());
    cipher.init(Cipher.DECRYPT_MODE, key, epkInfo.getAlgParameters());

    try {
        return epkInfo.getKeySpec(cipher);
    } catch (InvalidKeySpecException ex) {
        System.err.println("Password may be bad.");
        throw ex;
    }
}

From source file:MainClass.java

private static byte[] passwordEncrypt(char[] password, byte[] plaintext) throws Exception {
    int MD5_ITERATIONS = 1000;
    byte[] salt = new byte[8];
    SecureRandom random = new SecureRandom();
    random.nextBytes(salt);/* w ww . j av a  2s  . c  o m*/

    PBEKeySpec keySpec = new PBEKeySpec(password);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithSHAAndTwofish-CBC");
    SecretKey key = keyFactory.generateSecret(keySpec);
    PBEParameterSpec paramSpec = new PBEParameterSpec(salt, MD5_ITERATIONS);
    Cipher cipher = Cipher.getInstance("PBEWithSHAAndTwofish-CBC");
    cipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);

    byte[] ciphertext = cipher.doFinal(plaintext);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    baos.write(salt);
    baos.write(ciphertext);
    return baos.toByteArray();
}

From source file:org.beangle.security.codec.DESEncrypt.java

public byte[] doEncrypt(byte plainText[]) throws Exception {
    SecureRandom sr = new SecureRandom();
    byte rawKeyData[] = desKey;
    DESKeySpec dks = new DESKeySpec(rawKeyData);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    javax.crypto.SecretKey key = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance("DES");
    cipher.init(1, key, sr);//from   w w  w.jav a 2s.  co m
    byte data[] = plainText;
    byte encryptedData[] = cipher.doFinal(data);
    return encryptedData;
}

From source file:Main.java

private static byte[] doFinal(String key, int opmode, byte[] input)
        throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        IllegalBlockSizeException, BadPaddingException {
    key = checkNull(key) ? DEFAULT_KEY : key;
    if (checkNull(key)) {
        return null;
    }//from   w w  w  .j  a  v  a  2 s  . c o m
    SecureRandom sr = new SecureRandom();
    DESKeySpec dks = new DESKeySpec(key.getBytes());
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance(MODE);
    cipher.init(opmode, securekey, sr);
    return cipher.doFinal(input);
}

From source file:DesEncrypter.java

DesEncrypter(String passPhrase) throws Exception {
    int iterationCount = 2;
    KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
    SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
    ecipher = Cipher.getInstance(key.getAlgorithm());
    dcipher = Cipher.getInstance(key.getAlgorithm());

    AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);

    ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
    dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
}

From source file:ch.helmchen.camlapse.user.control.Encryption.java

/**
 * Verschlsselt den bergebenen String.//w  w  w. ja  v  a  2s .com
 * 
 * @param aString zu verschlsselnder String.
 */
public static String encrypt(final String aString) throws GeneralSecurityException {
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
    Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    return base64Encode(pbeCipher.doFinal(aString.getBytes()));
}

From source file:org.craftercms.commons.crypto.impl.PbkAesTextEncryptor.java

private static Key generateKey(String password, String salt) throws CryptoException {
    try {//from   w  ww.  j a va  2  s . c  om
        KeySpec keySpec = new PBEKeySpec(password.toCharArray(), Base64.decodeBase64(salt), PBK_ITER, PBK_LEN);
        SecretKeyFactory factory = SecretKeyFactory.getInstance(PBK_ALGORITHM);

        return new SecretKeySpec(factory.generateSecret(keySpec).getEncoded(),
                CryptoUtils.AES_CIPHER_ALGORITHM);
    } catch (GeneralSecurityException e) {
        throw new CryptoException("Unable to generate PBK key", e);
    }
}