Example usage for javax.crypto Cipher doFinal

List of usage examples for javax.crypto Cipher doFinal

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Introduction

In this page you can find the example usage for javax.crypto Cipher doFinal.

Prototype

public final byte[] doFinal(byte[] input) throws IllegalBlockSizeException, BadPaddingException

Source Link

Document

Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation.

Usage

From source file:hudson.util.Protector.java

public static String protect(String secret) {
    try {/*from ww w  .  j  a v  a  2s.c  om*/
        Cipher cipher = Secret.getCipher(ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, DES_KEY);
        return new String(Base64.encodeBase64(cipher.doFinal((secret + MAGIC).getBytes("UTF-8"))));
    } catch (GeneralSecurityException e) {
        throw new Error(e); // impossible
    } catch (UnsupportedEncodingException e) {
        throw new Error(e); // impossible
    }
}

From source file:ch.helmchen.camlapse.user.control.Encryption.java

/**
 * Verschlsselt den bergebenen String./*  ww w  .j  a  va 2  s.  c om*/
 * 
 * @param aString zu verschlsselnder String.
 */
public static String encrypt(final String aString) throws GeneralSecurityException {
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    SecretKey key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
    Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    return base64Encode(pbeCipher.doFinal(aString.getBytes()));
}

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:hudson.util.Protector.java

/**
 * Returns null if fails to decrypt properly.
 *//*w ww. j a v  a  2  s  .c  om*/
public static String unprotect(String data) {
    if (data == null) {
        return null;
    }
    try {
        Cipher cipher = Secret.getCipher(ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, DES_KEY);
        String plainText = new String(cipher.doFinal(Base64.decodeBase64(data)), "UTF-8");
        if (plainText.endsWith(MAGIC)) {
            return plainText.substring(0, plainText.length() - 3);
        }
        return null;
    } catch (GeneralSecurityException e) {
        return null;
    } catch (UnsupportedEncodingException e) {
        throw new Error(e); // impossible
    } catch (IOException e) {
        return null;
    }
}

From source file:com.drisoftie.cwdroid.util.CredentialUtils.java

private static byte[] encrypt(byte[] key, byte[] clear) throws NoSuchPaddingException, NoSuchAlgorithmException,
        InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    SecretKeySpec skeySpec = new SecretKeySpec(key, AES);
    Cipher cipher = getDefaultCipher();
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
    return cipher.doFinal(clear);
}

From source file:com.drisoftie.cwdroid.util.CredentialUtils.java

private static byte[] decrypt(byte[] key, byte[] encrypted) throws NoSuchPaddingException,
        NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    SecretKeySpec skeySpec = new SecretKeySpec(key, AES);
    Cipher cipher = getDefaultCipher();
    cipher.init(Cipher.DECRYPT_MODE, skeySpec);
    return cipher.doFinal(encrypted);
}

From source file:com.yukthi.utils.CryptoUtils.java

/**
 * Encrypts/Decrypts input string using AES algorithm
 * @param cipherMode/*from  www .  ja  v  a  2  s  .c  o m*/
 * @param secretKeyStr
 * @param input
 * @return
 */
private static byte[] doCrypto(int cipherMode, String secretKeyStr, byte input[]) {
    try {
        Key secretKey = new SecretKeySpec(secretKeyStr.getBytes(), ALGORITHM);
        Cipher cipher = Cipher.getInstance(TRANSFORMATION);
        cipher.init(cipherMode, secretKey);

        return cipher.doFinal(input);
    } catch (Exception ex) {
        throw new InvalidArgumentException(ex, "Error encrypting/decrypting input bytes");
    }
}

From source file:com.example.license.DESUtil.java

public static String encryptBase64(String data, String key) throws Exception {

    DESKeySpec desKey = new DESKeySpec(key.getBytes());
    // ?DESKeySpec??
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
    SecretKey securekey = keyFactory.generateSecret(desKey);

    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, securekey);

    byte[] results = cipher.doFinal(data.getBytes("UTF-8"));
    // Encrypt//  w  ww. jav a  2  s.co  m
    // byte[] unencryptedByteArray = data.getBytes("UTF8");
    // byte[] encryptedBytes = encryptCipher.doFinal(unencryptedByteArray);

    // Encode bytes to base64 to get a string
    byte[] encodedBytes = Base64.encodeBase64(results);
    return new String(encodedBytes);
}

From source file:cr.ac.uia.SistemaGC.utils.AES.java

public static String encrypt(Long cedula, String usuario, String contrasena) {
    //<editor-fold defaultstate="collapsed" desc="Mtodo para cifrar contraseas">
    /*/*from  w ww .  j a  v  a 2  s. com*/
    * Inspirado en:
    * http://stackoverflow.com/questions/15554296/simple-java-aes-encrypt-decrypt-example
     */
    try {
        IvParameterSpec iv = new IvParameterSpec(fitString(usuario, 16).getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(fitString(cedula.toString(), 16).getBytes("UTF-8"), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(contrasena.getBytes());
        return Base64.encodeBase64String(encrypted);
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException
            | BadPaddingException e) {
        e.printStackTrace();
        System.err.println(e.getClass().getName() + ": " + e.getMessage());
        System.exit(0);
    }
    return null;
    //</editor-fold>
}

From source file:Main.java

public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {

    Key deskey = null;//from   www  .j  a  va2 s  . c o  m
    DESedeKeySpec spec = new DESedeKeySpec(key);
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
    deskey = keyfactory.generateSecret(spec);

    Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");
    IvParameterSpec ips = new IvParameterSpec(keyiv);

    cipher.init(Cipher.DECRYPT_MODE, deskey, ips);

    byte[] bOut = cipher.doFinal(data);

    return bOut;

}