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:com.cyberninjas.xerobillableexpenses.util.Settings.java

public Settings() {
    try {/*  ww w  . j  a va2 s  . c o  m*/
        String parentClass = new Exception().getStackTrace()[1].getClassName();
        this.prefs = Preferences.userNodeForPackage(Class.forName(parentClass));
        Random r = new SecureRandom();

        //Set IV
        this.iv = prefs.getByteArray("DRUGS", null);

        //Pick Random PWD
        byte[] b = new byte[128];
        r.nextBytes(b);
        MessageDigest sha = MessageDigest.getInstance("SHA-1");
        sha.update(b);
        String sHash = new String(Base64.encodeBase64(sha.digest()));

        String password = prefs.get("LAYOUT", sHash);
        if (password.equals(sHash))
            prefs.put("LAYOUT", sHash);

        //Keep 'em Guessing
        r.nextBytes(b);
        sha.update(b);
        prefs.put("PASSWORD", new String(Base64.encodeBase64(sha.digest())));

        //Set Random Salt
        byte[] tSalt = new byte[8];
        r.nextBytes(tSalt);
        byte[] salt = prefs.getByteArray("HIMALAYAN", tSalt);
        if (Arrays.equals(salt, tSalt))
            prefs.putByteArray("HIMALAYAN", salt);

        /* Derive the key, given password and salt. */
        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        KeySpec spec = new PBEKeySpec(password.toCharArray(), salt, 65536, 128);
        SecretKey tmp = factory.generateSecret(spec);
        this.secret = new SecretKeySpec(tmp.getEncoded(), "AES");

        cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(RSAx509CertGen.class.getName()).log(Level.SEVERE, null, ex);
    } catch (InvalidKeySpecException ex) {
        Logger.getLogger(RSAx509CertGen.class.getName()).log(Level.SEVERE, null, ex);
    } catch (Exception ex) {
        Logger.getLogger(RSAx509CertGen.class.getName()).log(Level.SEVERE, null, ex);
    }

}

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From source file:com.haulmont.cuba.core.sys.encryption.Sha1EncryptionModule.java

protected KeySpec getKeySpec(String content, byte[] salt) {
    return new PBEKeySpec(content.toCharArray(), salt, ITERATIONS, DERIVED_KEY_LENGTH_BITS);
}

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From source file:org.gravidence.gravifon.util.PasswordUtils.java

/**
 * Generates salted PBKDF2 hash for given password and salt.
 * /*from www .java2 s .c  o m*/
 * @param password plaintext password
 * @param salt cryptographic salt
 * @return salted PBKDF2 hash
 */
private static String hash(String password, byte[] salt) {
    if (StringUtils.isEmpty(password)) {
        throw new IllegalArgumentException("password");
    }
    if (ArrayUtils.isEmpty(salt)) {
        throw new IllegalArgumentException("salt");
    }

    PBEKeySpec pbeks = new PBEKeySpec(password.toCharArray(), salt, ITERATIONS_NUMBER, HASH_LENGTH);

    byte[] hash;
    try {
        hash = skf.generateSecret(pbeks).getEncoded();
    } catch (InvalidKeySpecException ex) {
        throw new GravifonException(GravifonError.INTERNAL, "Failed to generate hash.", ex);
    }

    return Base64.encodeBase64String(hash);
}

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From source file:com.fegor.alfresco.security.crypto.Crypto.java

/**
 * Encryption configuration//from  ww w  . j  ava 2  s.  c om
 * 
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeySpecException
 * @throws NoSuchPaddingException
 * @throws InvalidParameterSpecException
 * @throws IllegalBlockSizeException
 * @throws BadPaddingException
 * @throws UnsupportedEncodingException
 * @throws InvalidKeyException
 */
public void configEncrypt() throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        InvalidParameterSpecException, IllegalBlockSizeException, BadPaddingException,
        UnsupportedEncodingException, InvalidKeyException {
    SecretKeyFactory factory = null;
    SecretKey tmp = null;

    salt_pos = new byte[SALT_LEN];
    SecureRandom rnd = new SecureRandom();
    rnd.nextBytes(salt_pos);

    if (logger.isDebugEnabled())
        logger.debug(this.getClass().getName() + ": [salt: " + (new String(Hex.encodeHex(salt_pos))) + "]");

    factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");

    /*
     * http://www.javamex.com/tutorials/cryptography/unrestricted_policy_files
     * .shtml
     */
    KeySpec spec = new PBEKeySpec(password.toCharArray(), salt_pos, ITERATIONS, KEYLEN_BITS);
    tmp = factory.generateSecret(spec);
    SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");

    eCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    eCipher.init(Cipher.ENCRYPT_MODE, secret);
    AlgorithmParameters params = eCipher.getParameters();

    vector_init = params.getParameterSpec(IvParameterSpec.class).getIV();

    if (logger.isDebugEnabled())
        logger.debug(
                this.getClass().getName() + ": [vector ini: " + (new String(Hex.encodeHex(vector_init))) + "]");
}

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From source file:org.entrystore.repository.security.Password.java

private static String hash(String password, byte[] salt) {
    if (password == null || password.length() == 0) {
        throw new IllegalArgumentException("Empty passwords are not supported");
    }// ww w.j  av a  2 s. c  o m
    try {
        long before = new Date().getTime();
        SecretKey key = secretKeyFactory
                .generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLen));
        log.info("Password hashing took " + (new Date().getTime() - before) + " ms");
        return Base64.encodeBase64String(key.getEncoded());
    } catch (GeneralSecurityException gse) {
        log.error(gse.getMessage());
    }
    return null;
}

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From source file:spacetraffic.kiv.zcu.cz.gameelement.MinigamePasswordHasher.java

/**
 * Method for generating key./*from   w  w  w  .  j  av  a  2 s  . c  om*/
 * @return key
 * @throws Exception
 */
private Key generateKey() throws Exception {
    SecretKeyFactory factory = SecretKeyFactory.getInstance(ALGORITHM);
    char[] pdkbf2Password = PDKBF2_PASSWORD.toCharArray();
    byte[] salt = SALT.getBytes(CHARSET);

    KeySpec keySpec = new PBEKeySpec(pdkbf2Password, salt, 65536, 128);
    SecretKey secretKey = factory.generateSecret(keySpec);
    byte[] encodedKey = secretKey.getEncoded();

    return new SecretKeySpec(encodedKey, "AES");
}

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From source file:com.redsqirl.workflow.utils.FileStream.java

private static SecretKey generateKey() throws Exception {
    PBEKeySpec keySpec = new PBEKeySpec(passphrase.toCharArray(), salt, iterations, keyLength);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    return keyFactory.generateSecret(keySpec);
}

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From source file:com.the_incognito.darry.incognitochatmessengertest.BouncyCastleImplementation.java

private static Key generateKeySpec(String key) throws NoSuchAlgorithmException, InvalidKeySpecException {
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256", new BouncyCastleProvider());
    char password[] = key.toCharArray();
    byte salt[] = "salt".getBytes();
    KeySpec spec = new PBEKeySpec(password, salt, 65536, 128);
    SecretKey tmp = factory.generateSecret(spec);
    SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");
    return secret;
    //To change body of generated methods, choose Tools | Templates.
}

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From source file:com.networknt.utility.HashUtil.java

public static boolean validatePassword(char[] originalPassword, String storedPassword)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    String[] parts = storedPassword.split(":");
    int iterations = Integer.parseInt(parts[0]);
    byte[] salt = fromHex(parts[1]);
    byte[] hash = fromHex(parts[2]);

    PBEKeySpec spec = new PBEKeySpec(originalPassword, salt, iterations, hash.length * 8);
    SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    byte[] testHash = skf.generateSecret(spec).getEncoded();

    int diff = hash.length ^ testHash.length;
    for (int i = 0; i < hash.length && i < testHash.length; i++) {
        diff |= hash[i] ^ testHash[i];/* w w  w  .j a  v a 2s  .  co m*/
    }
    return diff == 0;
}

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From source file:tds.itemrenderer.security.Encryption.java

/**
 * initializes ciphers and adds jce provider if provided
 *
 * @throws TDS.Shared.Security.TDSEncryptionException
 *//*from  w  ww  . jav a 2s.c  om*/
@PostConstruct
protected void init() {
    if (encryptionKey == null || StringUtils.isBlank(encryptionKey)
            || encryptionKey.length() < MINIMUM_KEY_LENGTH) {
        throw new TDSEncryptionException(
                String.format("Number of characters for key must be greater than %s", MINIMUM_KEY_LENGTH));
    }

    try {
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(PBE_KEY_ALGORITHM);
        KeySpec keySpec = new PBEKeySpec(encryptionKey.toCharArray(), PBE_SALT, PBE_NUM_ITERATIONS,
                PBE_KEY_LENGTH);
        SecretKey secretKeyTemp;
        secretKeyTemp = secretKeyFactory.generateSecret(keySpec);
        secretKey = new SecretKeySpec(secretKeyTemp.getEncoded(), CIPHER_ALGORITHM);
        encryptCipher = Cipher.getInstance(TRANSFORMATION);
        decryptCipher = Cipher.getInstance(TRANSFORMATION);
        encryptCipher.init(Cipher.ENCRYPT_MODE, secretKey);
    } catch (NoSuchAlgorithmException e) {
        log.error("Encyption.initCipher: " + e.getMessage(), e);
        throw new TDSEncryptionException("Algorithm is not available");
    } catch (InvalidKeySpecException e) {
        log.error("Encyption.initCipher: " + e.getMessage(), e);
        throw new TDSEncryptionException("Key specification is not valid");
    } catch (NoSuchPaddingException e) {
        log.error("Encyption.initCipher: " + e.getMessage(), e);
        throw new TDSEncryptionException("Padding is not valid");
    } catch (InvalidKeyException e) {
        log.error("Encyption.initCipher: " + e.getMessage(), e);
        throw new TDSEncryptionException("Key is not valid");
    }
}

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