Example usage for javax.crypto.spec SecretKeySpec SecretKeySpec

Introduction

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

Prototype

public SecretKeySpec(byte[] key, String algorithm)

Source Link

Document

Constructs a secret key from the given byte array.

Usage

From source file:aes_encryption.AES_Encryption.java

public static void setKey(String myKey) {

    MessageDigest sha = null;//ww  w  .ja  v a  2s.  c  o m
    try {
        key = myKey.getBytes("UTF-8");
        System.out.println(key.length);
        sha = MessageDigest.getInstance("SHA-1");
        key = sha.digest(key);
        key = Arrays.copyOf(key, 16); //change the bits later 128 then 256
        System.out.println(key.length);
        System.out.println(new String(key, "UTF-8"));
        secretKey = new SecretKeySpec(key, "AES");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
}

From source file:encryptdecrypt.util.Security.java

public static String decrypt(String strToDecrypt) {
    try {/*from   w  ww  .  ja  va 2 s. co  m*/
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        return new String(cipher.doFinal(Base64.decodeBase64(strToDecrypt.getBytes())));
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

private static Mac getMacForPassphrase(String passphrase, byte[] salt) throws GeneralSecurityException {
    SecretKey key = getKeyFromPassphrase(passphrase, salt);
    byte[] pbkdf2 = key.getEncoded();
    SecretKeySpec hmacKey = new SecretKeySpec(pbkdf2, "HmacSHA1");
    Mac hmac = Mac.getInstance("HmacSHA1");
    hmac.init(hmacKey);//  w  w w .  j ava 2  s .  c o m

    return hmac;
}

From source file:Main.java

private static String des(String id, String key) throws NoSuchPaddingException, NoSuchAlgorithmException,
        InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    int index = 0;
    SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(), "DES");
    Cipher cipher = Cipher.getInstance("DES/ECB/NoPadding");
    cipher.init(1, secretKeySpec);/*w ww.  j  a  v a 2 s. c om*/
    int i = id.length();
    if (i < 8) {
        i = 8 - i;
    } else {
        i %= 8;
        i = i != 0 ? 8 - i : 0;
    }
    while (index < i) {
        id = String.valueOf(id) + "\u0000";
        index++;
    }
    return a(cipher.doFinal(id.getBytes()));
}

From source file:Main.java

/**
 *
 * @throws InvalidKeySpecException/*from ww w .j a v a2 s .co m*/
 * @throws NoSuchAlgorithmException
 */
private static Key deriveKeyPbkdf2(byte[] salt, String password)
        throws InvalidKeySpecException, NoSuchAlgorithmException {

    KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, ITERATION_COUNT, KEY_LENGTH);
    SecretKeyFactory factory;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1And8bit");
    } else {
        factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    }

    byte[] keyBytes = factory.generateSecret(keySpec).getEncoded();

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

From source file:Main.java

private static byte[] sign(String keyString, byte[] message) throws GeneralSecurityException {
    byte[] keyBytes = utf8(keyString);

    SecretKey key = new SecretKeySpec(keyBytes, MAC_NAME);
    Mac mac = Mac.getInstance(MAC_NAME);
    mac.init(key);//from   www.j ava 2 s  .  co m

    return mac.doFinal(message);
}

From source file:com.aerohive.nms.engine.admin.task.licensemgr.license.processor2.PacketUtil.java

private static byte[] encryptData(byte[] content) {
    byte[] outBytes = null;

    try {/*from ww w. j  a v  a  2 s. c o m*/
        Key key = new SecretKeySpec(secret_key, "DESede");

        Cipher cipher = Cipher.getInstance("DESede", "SunJCE");

        cipher.init(Cipher.ENCRYPT_MODE, key, cipher.getParameters());

        outBytes = cipher.doFinal(content);

    } catch (Exception ex) {
        //log.error("PacketUtil",ex.getMessage(), ex);
        return outBytes;
    }

    return outBytes;
}

From source file:com.sysfore.pos.licensemanagement.LicenceManagementUtil.java

public static String decrypt(String strToDecrypt) {
    try {// w w  w  .j a v  a2  s  .  co  m
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        final String decryptedString = new String(cipher.doFinal(Base64.decodeBase64(strToDecrypt)));

        return decryptedString;
    } catch (Exception e) {
        log.error("Error while decrypting", e);

    }
    return null;
}

From source file:authentication.AES.java

public static String decrypt(String textoencriptado) throws Exception {
    Cipher decripta = Cipher.getInstance("AES/CBC/PKCS5Padding", "SunJCE");
    SecretKeySpec key = new SecretKeySpec(chaveencriptacao.getBytes("UTF-8"), "AES");
    decripta.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(IV.getBytes("UTF-8")));
    return new String(decripta.doFinal(Base64.decodeBase64(textoencriptado)), "UTF-8");
}

From source file:com.lwr.software.reporter.utils.EncryptionUtil.java

public static String encrypt(String value) {
    try {//from   w ww.j av  a2s .  c  o  m
        IvParameterSpec iv = new IvParameterSpec(
                DashboardConstants.INIT_VECTOR.getBytes(DashboardConstants.ENCODING));
        SecretKeySpec skeySpec = new SecretKeySpec(
                DashboardConstants.INIT_KEY.getBytes(DashboardConstants.ENCODING),
                DashboardConstants.ALGORITHM);
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(value.getBytes());
        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}