Example usage for javax.crypto.spec SecretKeySpec SecretKeySpec

List of usage examples for javax.crypto.spec SecretKeySpec SecretKeySpec

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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:Main.java

public static String encryption(String string) throws Exception {
    // TODO Auto-generated method stub

    //generate symmetric key
    KeyGenerator keygt = KeyGenerator.getInstance("AES");
    keygt.init(128);/*from  w w w. ja  va  2  s . c o m*/
    SecretKey symkey = keygt.generateKey();

    //get it encoded
    byte[] aes_ba = symkey.getEncoded();

    //create cipher
    SecretKeySpec skeySpec = new SecretKeySpec(aes_ba, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

    //encryption
    byte[] EncSymbyteArray = cipher.doFinal(string.getBytes());

    //encrypt symKey with PublicKey
    //        Key pubKey = getPublicKey();

    Key pubKey = publicKey;

    //RSA cipher
    Cipher cipherAsm = Cipher.getInstance("RSA", "BC");
    cipherAsm.init(Cipher.ENCRYPT_MODE, pubKey);

    //RSA encryption
    byte[] asymEncsymKey = cipherAsm.doFinal(aes_ba);

    //           File f3 = new File(BASE_PATH,"enc.txt");
    //           File f3key = new File(BASE_PATH,"enckey.txt");
    //           File f3file = new File(BASE_PATH,"encfile.txt");
    //           writeToFile2(f3,f3key,f3file, asymEncsymKey, EncSymbyteArray);

    //byte != new String
    //return new String(byteMerger(asymEncsymKey, EncSymbyteArray));
    return Base64.encodeToString(byteMerger(asymEncsymKey, EncSymbyteArray), Base64.DEFAULT);

}

From source file:authentication.AES.java

public static String encrypt(String textopuro) throws Exception {
    Cipher encripta = Cipher.getInstance("AES/CBC/PKCS5Padding", "SunJCE");
    SecretKeySpec key = new SecretKeySpec(chaveencriptacao.getBytes("UTF-8"), "AES");
    encripta.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(IV.getBytes("UTF-8")));
    byte[] a = encripta.doFinal(textopuro.getBytes("UTF-8"));
    return StringUtils.newStringUtf8(Base64.encodeBase64(a, false));
}

From source file:EncDec.AES.java

public static String encrypt(String key, String initVector, String value) {
    try {/*w w  w. j  a  v a 2 s . c om*/
        IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);

        byte[] encrypted = cipher.doFinal(value.getBytes());
        //System.out.println("encrypted string: "
        //        + Base64.encodeBase64String(encrypted));

        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:net.foreworld.util.RestUtil.java

public static String genSignature(String data, String key) {
    byte[] byteHMAC = null;
    try {/*from  w  ww  .  ja  va  2  s.co  m*/
        Mac mac = Mac.getInstance(ALGORITHM);
        SecretKeySpec spec = new SecretKeySpec(key.getBytes(), ALGORITHM);
        mac.init(spec);
        byteHMAC = mac.doFinal(data.toLowerCase(Locale.getDefault()).getBytes());
    } catch (InvalidKeyException ignore) {
        return null;
    } catch (NoSuchAlgorithmException ignore) {
        return null;
    } // END

    if (null == byteHMAC)
        return null;

    // String code = new BASE64Encoder().encode(byteHMAC);
    String code = Base64.encodeBase64String(byteHMAC);

    try {
        return URLEncoder.encode(code, ENC);
    } catch (UnsupportedEncodingException ignore) {
    }
    return null;
}

From source file:clases.Seguridad.java

public static String encriptar(String cleartext) throws Exception {
    Cipher cipher = Cipher.getInstance(CI);
    SecretKeySpec skeySpec = new SecretKeySpec(KEY.getBytes(), ALG);
    IvParameterSpec ivParameterSpec = new IvParameterSpec(IV.getBytes());
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivParameterSpec);
    byte[] encrypted = cipher.doFinal(cleartext.getBytes());
    return new String(encodeBase64(encrypted));
}

From source file:BD.Encriptador.java

public static String Encriptar(String texto) {

    String secretKey = "qualityinfosolutions"; //llave para encriptar datos
    String base64EncryptedString = "";

    try {//from   ww  w  .  j a  va  2  s. c  om

        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(secretKey.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);

        SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);

        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);
        base64EncryptedString = new String(base64Bytes);

    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:controlpac.EncryptHelper.java

public static String Encriptar(String texto) {
    String base64EncryptedString = "";
    try {//  w w  w .ja va 2s.com
        MessageDigest md = MessageDigest.getInstance("MD5"); //Crea un hash con la clave elegida
        byte[] digestOfPassword = md.digest(secretKey.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        SecretKey key = new SecretKeySpec(keyBytes, "DESede"); //Crea la clave
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);//Inicializa el cifrado con la clave
        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);//Cifra el texto
        byte[] base64Bytes = Base64.encodeBase64(buf);//Encodea el texto en base64
        base64EncryptedString = new String(base64Bytes);
    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:com.fpt.crypto.CipherDemo.java

public static String encrypt(String in, String key) throws InvalidKeyException, IllegalBlockSizeException,
        BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException {
    Cipher cipher = Cipher.getInstance("AES");
    byte[] inputBytes = in.getBytes();
    SecretKey secKey = new SecretKeySpec(key.getBytes(), "AES");
    cipher.init(Cipher.ENCRYPT_MODE, secKey);
    byte[] outputBytes = cipher.doFinal(inputBytes);
    return Hex.encodeHexString(outputBytes);
}

From source file:Controller.StringEncrypt.java

public final static String encrypt(String cleartext) {
    byte[] encrypted = null;
    try {/*w  w  w  . j  av  a2s.c  om*/
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        SecretKeySpec skeySpec = new SecretKeySpec("92AE31A79FEEB2A3".getBytes(), "AES");
        IvParameterSpec ivParameterSpec = new IvParameterSpec("0123456789ABCDEF".getBytes());
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivParameterSpec);
        encrypted = cipher.doFinal(cleartext.getBytes());
    } catch (InvalidAlgorithmParameterException | InvalidKeyException | NoSuchAlgorithmException
            | BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException e) {
        JOptionPane.showMessageDialog(null, "Error encriptando contrasea");
    }
    return new String(encodeBase64(encrypted));
}

From source file:Main.java

public static byte[] aesIGEdecrypt(byte[] tmpAESiv, byte[] tmpAesKey, byte[] data) {
    try {//www . j ava 2  s .c o m

        ByteBuffer out = ByteBuffer.allocate(data.length);

        byte[] iv2p = Arrays.copyOfRange(tmpAESiv, 0, tmpAESiv.length / 2);
        byte[] ivp = Arrays.copyOfRange(tmpAESiv, tmpAESiv.length / 2, tmpAESiv.length);

        int len = data.length / AES_BLOCK_SIZE;

        byte[] xorInput = null;
        byte[] xorOutput = null;

        SecretKeySpec keySpec = null;
        keySpec = new SecretKeySpec(tmpAesKey, "AES");
        Cipher cipher = null;
        cipher = Cipher.getInstance("AES/ECB/NoPadding");
        cipher.init(Cipher.DECRYPT_MODE, keySpec);

        byte[] input = null;
        byte[] output = null;

        for (int i = 0; i < len; i++) {
            input = Arrays.copyOfRange(data, i * AES_BLOCK_SIZE, (i + 1) * AES_BLOCK_SIZE);
            xorInput = xor(input, ivp);
            output = cipher.doFinal(xorInput);
            xorOutput = xor(output, iv2p);
            out.put(xorOutput);

            ivp = xorOutput;
            iv2p = input;
        }
        return out.array();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }

    return null;
}