Examples with PBEKeySpec javax.crypto.spec.PBEKeySpec used on opensource projects

Example 41 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project jdk8u_jdk by JetBrains.

the class PBKDF2Wrapper method initCipher.

/**
     * Initiate the Cipher object for PBKDF2 algorithm using given "mode".
     *
     * @param mode Cipher mode: encrypt or decrypt
     * @return Cipher object for PBKDF2 algorithm
     * @throws GeneralSecurityException all security exceptions are thrown.
     */
@Override
protected Cipher initCipher(int mode) throws GeneralSecurityException {
    Provider provider = Security.getProvider("SunJCE");
    if (provider == null) {
        throw new RuntimeException("SunJCE provider does not exist.");
    }
    // Generate secret key
    PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray(), salt, DEFAULT_ITERATION, PKDF2_DEFAULT_KEY_LEN);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(baseAlgo);
    SecretKey key = keyFactory.generateSecret(pbeKeySpec);
    // get Cipher instance
    Cipher cipher = Cipher.getInstance(CIPHER_TRANSFORMATION, provider);
    cipher.init(mode, new SecretKeySpec(key.getEncoded(), KEY_ALGORITHM), new IvParameterSpec(iv));
    return cipher;
}

Example 42 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project jdk8u_jdk by JetBrains.

the class PBEKeyFactory method engineGetKeySpec.

/**
     * Returns a specification (key material) of the given key
     * in the requested format.
     *
     * @param key the key
     *
     * @param keySpec the requested format in which the key material shall be
     * returned
     *
     * @return the underlying key specification (key material) in the
     * requested format
     *
     * @exception InvalidKeySpecException if the requested key specification is
     * inappropriate for the given key, or the given key cannot be processed
     * (e.g., the given key has an unrecognized algorithm or format).
     */
protected KeySpec engineGetKeySpec(SecretKey key, Class<?> keySpecCl) throws InvalidKeySpecException {
    if ((key instanceof SecretKey) && (validTypes.contains(key.getAlgorithm().toUpperCase(Locale.ENGLISH))) && (key.getFormat().equalsIgnoreCase("RAW"))) {
        // Check if requested key spec is amongst the valid ones
        if ((keySpecCl != null) && PBEKeySpec.class.isAssignableFrom(keySpecCl)) {
            byte[] passwdBytes = key.getEncoded();
            char[] passwdChars = new char[passwdBytes.length];
            for (int i = 0; i < passwdChars.length; i++) passwdChars[i] = (char) (passwdBytes[i] & 0x7f);
            PBEKeySpec ret = new PBEKeySpec(passwdChars);
            // password char[] was cloned in PBEKeySpec constructor,
            // so we can zero it out here
            java.util.Arrays.fill(passwdChars, ' ');
            java.util.Arrays.fill(passwdBytes, (byte) 0x00);
            return ret;
        } else {
            throw new InvalidKeySpecException("Invalid key spec");
        }
    } else {
        throw new InvalidKeySpecException("Invalid key " + "format/algorithm");
    }
}

Example 43 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project TaEmCasa by Dionen.

the class PasswordAuthentication method generateStorngPasswordHash.

/* Cria um Hash a partir de uma senha e um Salt. Retorna o Hash */
private static String generateStorngPasswordHash(String password, String Stringsalt) throws NoSuchAlgorithmException, InvalidKeySpecException {
    int iterations = 2000;
    char[] chars = password.toCharArray();
    byte[] salt = Stringsalt.getBytes();
    PBEKeySpec spec = new PBEKeySpec(chars, salt, iterations, 64 * 8);
    SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    byte[] hash = skf.generateSecret(spec).getEncoded();
    return toHex(hash);
}

Example 44 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project GeoGig by boundlessgeo.

the class Remote method decryptPassword.

public static String decryptPassword(String password) {
    try {
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
        Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
        pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
        return new String(pbeCipher.doFinal(Base64.decode(password)));
    } catch (Exception e) {
        return password;
    }
}

Example 45 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project jdk8u_jdk by JetBrains.

the class MyPBKDF2SecretKey method getSecretKeyForPBKDF2.

/**
     * Generate a PBKDF2 secret key using given algorithm.
     *
     * @param algoToDeriveKey PBKDF2 algorithm
     * @return PBKDF2 secret key
     * @throws NoSuchAlgorithmException
     * @throws InvalidKeySpecException
     */
private SecretKey getSecretKeyForPBKDF2(String algoToDeriveKey) throws NoSuchAlgorithmException, InvalidKeySpecException {
    SecretKeyFactory skf = SecretKeyFactory.getInstance(algoToDeriveKey);
    PBEKeySpec spec = new PBEKeySpec(PASS_PHRASE.toCharArray(), this.salt, ITERATION_COUNT, KEY_SIZE);
    return skf.generateSecret(spec);
}