Android 3DES 암호 화/복호화 도구 클래스

public class AndroidDes3Util {
    private static final String ALGORITHM = "DESede";
    /**
     *             
     */
    private final static String encoding = "utf-8";

    /**
     * 3DES  
     *
     * @param plainText     
     * @return
     */
    public static String encode(String plainText, String secretKey) throws Exception {
        Key deskey = null;
        DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
        deskey = keyFactory.generateSecret(spec);
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, deskey);
        byte[] encryptData = cipher.doFinal(plainText.getBytes(encoding));
        return Base64.encodeToString(encryptData, Base64.DEFAULT);
    }

    /**
     * 3DES  
     *
     * @param encryptText     
     * @param secretKey     
     * @return
     */
    public static String decode(String encryptText, String secretKey) throws Exception {
        Key deskey = null;
        DESedeKeySpec spec = new DESedeKeySpec(secretKey.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
        deskey = keyFactory.generateSecret(spec);
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, deskey);
        byte[] decryptData = cipher.doFinal(Base64.decode(encryptText, Base64.DEFAULT));
        return new String(decryptData, encoding);
    }
}