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:adminpassword.AESDemo.java

public String encrypt(String plainText) throws Exception {

    //get salt/*from   w  w  w . j a va  2  s . co  m*/
    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);
}

From source file:com.ikon.util.SecureStore.java

/**
 * DES encoder/*from w w  w.j a  v  a  2 s. co m*/
 */
public static byte[] desEncode(String key, byte[] src)
        throws InvalidKeyException, UnsupportedEncodingException, NoSuchAlgorithmException,
        InvalidKeySpecException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {
    DESKeySpec keySpec = new DESKeySpec(key.getBytes("UTF8"));
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    SecretKey sKey = keyFactory.generateSecret(keySpec);

    Cipher cipher = Cipher.getInstance("DES"); // cipher is not thread safe
    cipher.init(Cipher.ENCRYPT_MODE, sKey);
    byte[] dst = cipher.doFinal(src);

    return dst;
}

From source file:com.intera.roostrap.util.EncryptionUtil.java

private static void encryptOrDecrypt(String encryptionKey, int mode, InputStream is, OutputStream os)
        throws InvalidKeyException, IOException {
    DESKeySpec keySpec = new DESKeySpec(toBytes(encryptionKey));

    SecretKey key = null;/*from w  ww . j  a  v a  2  s . c  om*/
    Cipher cipher = null;
    try {
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DES");
        key = secretKeyFactory.generateSecret(keySpec);
        cipher = Cipher.getInstance("DES");

    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    if (mode == Cipher.ENCRYPT_MODE) {
        cipher.init(Cipher.ENCRYPT_MODE, key);
        CipherInputStream cis = new CipherInputStream(is, cipher);
        doCopy(cis, os);
    } else if (mode == Cipher.DECRYPT_MODE) {
        cipher.init(Cipher.DECRYPT_MODE, key);
        CipherOutputStream cos = new CipherOutputStream(os, cipher);
        doCopy(is, cos);
    }
}

From source file:Authentication.HashPassword.java

public HashPassword() throws Exception {
    myEncryptionKey = "ThisIsSpartaThisIsSparta";
    myEncryptionScheme = DESEDE_ENCRYPTION_SCHEME;
    arrayBytes = myEncryptionKey.getBytes(UNICODE_FORMAT);
    ks = new DESedeKeySpec(arrayBytes);
    skf = SecretKeyFactory.getInstance(myEncryptionScheme);
    cipher = Cipher.getInstance(myEncryptionScheme);
    key = skf.generateSecret(ks);//from   www.  j  a  v  a2  s. c  om
}

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//from  w  w  w  . j a  va 2s. co m
            .generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLength));
    return Base64.encodeBase64String(key.getEncoded());
}

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));
}

From source file:com.creditcloud.common.security.impl.DESTextCipher.java

public DESTextCipher() {
    try {/*  w  w  w  . j  a  va2s.  co  m*/
        encryptCipher = Cipher.getInstance("DES");
        decryptCipher = Cipher.getInstance("DES");
        keyFactory = SecretKeyFactory.getInstance("DES");
    } catch (GeneralSecurityException ex) {
        logger.error("I don't think this will happen...", ex);
    }
}

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

public static String Encrypt(String str) {
    // create cryptography object
    SecretKeyFactory factory;//  w ww.j a  va 2  s . co m
    try {
        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:org.underworldlabs.util.DesEncrypter.java

public static SecretKey getSecretKey(String key) throws Exception {
    byte[] keyAsBytes = key.getBytes("UTF8");
    KeySpec keySpec = new DESKeySpec(keyAsBytes);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
    return keyFactory.generateSecret(keySpec);
}

From source file:com.rdonasco.security.utils.EncryptionUtil.java

public static SecretKeyFactory getKeyFactory() throws Exception {
    if (null == keyFactory) {
        keyFactory = SecretKeyFactory.getInstance(CIPHER_KEY_SPEC);
    }// ww  w  . j ava  2  s . c  o m
    return keyFactory;
}