Example usage for javax.crypto.spec PBEKeySpec PBEKeySpec

Introduction

In this page you can find the example usage for javax.crypto.spec PBEKeySpec PBEKeySpec.

Prototype

public PBEKeySpec(char[] password, byte[] salt, int iterationCount, int keyLength) 

Source Link

Document

Constructor that takes a password, salt, iteration count, and to-be-derived key length for generating PBEKey of variable-key-size PBE ciphers.

Usage

From source file:Main.java

private static Cipher genCipher(char[] pass, byte[] salt, String factory, int iterations, int mode)
        throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException,
        InvalidAlgorithmParameterException {
    PBEKeySpec keySpec = new PBEKeySpec(pass, salt, iterations, 128);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(factory);
    SecretKey key = keyFactory.generateSecret(keySpec);
    AlgorithmParameterSpec spec = new PBEParameterSpec(salt, iterations);
    Cipher cipher = Cipher.getInstance(factory);
    cipher.init(mode, key, spec);/*from   w ww.ja v  a 2s .c om*/
    return cipher;
}

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From source file:adminpassword.Encryption.java

public String encrypt(String word, String idKey) throws Exception {

    byte[] ivBytes;
    String password = idKey; //you can give whatever you want. This is for testing purpose
    SecureRandom random = new SecureRandom();
    byte bytes[] = new byte[20];
    random.nextBytes(bytes);// ww  w  .j  a  v a 2 s.c  o  m

    byte[] saltBytes = bytes;

    // Derive the key
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), saltBytes, 65556, 256);
    SecretKey secretKey = factory.generateSecret(spec);
    SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");

    //encrypting the word
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, secret);
    AlgorithmParameters params = cipher.getParameters();
    ivBytes = params.getParameterSpec(IvParameterSpec.class).getIV();
    byte[] encryptedTextBytes = cipher.doFinal(word.getBytes("UTF-8"));

    //prepend salt and vi
    byte[] buffer = new byte[saltBytes.length + ivBytes.length + encryptedTextBytes.length];
    System.arraycopy(saltBytes, 0, buffer, 0, saltBytes.length);
    System.arraycopy(ivBytes, 0, buffer, saltBytes.length, ivBytes.length);
    System.arraycopy(encryptedTextBytes, 0, buffer, saltBytes.length + ivBytes.length,
            encryptedTextBytes.length);
    return new Base64().encodeToString(buffer);
}

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From source file:adminpassword.AESDemo.java

public String encrypt(String plainText) throws Exception {

    //get salt/*from   w ww. j  a v a2s  . c  om*/
    salt = generateSalt();
    byte[] saltBytes = salt.getBytes("UTF-8");

    // Derive the key
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), saltBytes, pswdIterations, keySize);

    SecretKey secretKey = factory.generateSecret(spec);
    SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");

    //encrypt the message
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, secret);
    AlgorithmParameters params = cipher.getParameters();
    ivBytes = params.getParameterSpec(IvParameterSpec.class).getIV();
    byte[] encryptedTextBytes = cipher.doFinal(plainText.getBytes("UTF-8"));
    return new Base64().encodeAsString(encryptedTextBytes);
}

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From source file:com.paypal.utilities.AESDecrypt.java

public AESDecrypt(String encryptedString) throws Exception {
    SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    KeySpec keySpec = new PBEKeySpec(passphrase.toCharArray(), SALT, ITERATION_COUNT, KEY_LENGTH);
    SecretKey secretKeyTemp = secretKeyFactory.generateSecret(keySpec);
    SecretKey secretKey = new SecretKeySpec(secretKeyTemp.getEncoded(), "AES");

    encrypt = Base64.decodeBase64(encryptedString.getBytes());

    eCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    eCipher.init(Cipher.ENCRYPT_MODE, secretKey);

    byte[] iv = extractIV();
    dCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    dCipher.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(iv));
}

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From source file:Main.java

public static byte[] generateHash(char[] pass, byte[] salt)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    PBEKeySpec keySpec = new PBEKeySpec(pass, salt, ITERATION_COUNT, 128);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(KEY_FACTORY);
    SecretKey key = keyFactory.generateSecret(keySpec);

    return key.getEncoded();
}

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From source file:org.openchain.certification.utility.PasswordUtil.java

private static String hash(String password, byte[] salt)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    SecretKey key = factory// w w  w .  jav  a2  s  .c  o m
            .generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLength));
    return Base64.encodeBase64String(key.getEncoded());
}

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From source file:adminpassword.Decryption.java

@SuppressWarnings("static-access")
public String decrypt(String encryptedText, String idKey) throws Exception {
    String password = idKey;/*w  ww.j  a  va2 s  . c  o  m*/

    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

    //strip off the salt and iv
    ByteBuffer buffer = ByteBuffer.wrap(new Base64().decode(encryptedText));
    byte[] saltBytes = new byte[20];
    buffer.get(saltBytes, 0, saltBytes.length);
    byte[] ivBytes1 = new byte[cipher.getBlockSize()];
    buffer.get(ivBytes1, 0, ivBytes1.length);
    byte[] encryptedTextBytes = new byte[buffer.capacity() - saltBytes.length - ivBytes1.length];
    buffer.get(encryptedTextBytes);

    // Deriving the key
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), saltBytes, 65556, 256);

    SecretKey secretKey = factory.generateSecret(spec);
    SecretKeySpec secret = new SecretKeySpec(secretKey.getEncoded(), "AES");
    cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(ivBytes1));

    byte[] decryptedTextBytes = null;
    try {
        decryptedTextBytes = cipher.doFinal(encryptedTextBytes);

    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    }

    return new String(decryptedTextBytes);
}

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From source file:com.hypersocket.auth.PasswordEncryptionService.java

public byte[] getEncryptedPassword(char[] password, byte[] salt, PasswordEncryptionType type)
        throws NoSuchAlgorithmException, InvalidKeySpecException {

    KeySpec spec = new PBEKeySpec(password, salt, type.getIterations(), type.getKeyLength());

    SecretKeyFactory f = SecretKeyFactory.getInstance(type.toString());

    return f.generateSecret(spec).getEncoded();
}

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From source file:org.openmrs.module.reportingsummary.api.io.download.DownloadProcessor.java

/**
 * Method to initialize the cipher object with the correct encryption algorithm.
 *
 * @throws Exception//from   w  w  w . ja  v  a 2 s  . c  o  m
 */
private Cipher initializeCipher() throws Exception {
    SecretKeyFactory factory = SecretKeyFactory.getInstance(InputOutputConstants.SECRET_KEY_FACTORY);
    KeySpec spec = new PBEKeySpec(password.toCharArray(), password.getBytes(), 1024, 128);
    SecretKey secretKey = factory.generateSecret(spec);

    SecretKey secret = new SecretKeySpec(secretKey.getEncoded(), InputOutputConstants.KEY_SPEC);

    if (log.isDebugEnabled())
        log.debug("Encrypting with: " + secret.getAlgorithm());

    Cipher cipher = Cipher.getInstance(InputOutputConstants.CIPHER_CONFIGURATION);
    cipher.init(Cipher.ENCRYPT_MODE, secret);
    return cipher;
}

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From source file:com.blackcrowsys.sinscrypto.AesKeyGenerator.java

@Override
public SecretKey generateSecretKey(String password, String salt)
        throws NoSuchAlgorithmException, InvalidKeySpecException, DecoderException {
    SecretKeyFactory factory = SecretKeyFactory.getInstance(ALGORITHM);
    KeySpec spec = new PBEKeySpec(password.toCharArray(), Hex.decodeHex(salt.toCharArray()), ITERATION,
            KEYLENGTH);/*from w  w  w .ja  v a2s. c o  m*/
    SecretKey key = factory.generateSecret(spec);
    return new SecretKeySpec(key.getEncoded(), ENCRYPTION);
}

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