com.CardPaymentGateway.Decrypt.java Source code

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Here is the source code for com.CardPaymentGateway.Decrypt.java

Source

/*
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package com.CardPaymentGateway;

import java.io.IOException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.AlgorithmParameterSpec;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
//import sun.misc.BASE64Decoder;
import org.apache.commons.codec.binary.Base64;
import sun.misc.BASE64Decoder;

/**
 *
 * @author smaingi
 */
public class Decrypt {
    Cipher cipher;

    // Input encrypted String
    //static  String input = "fFDVvIphyRA+4gUWgYdxSg==";

    // password to decrypt 16 bit
    final static String strPassword = "!@#$%^&*()~_+}{?";
    // put this as key in AES
    static SecretKeySpec key = new SecretKeySpec(strPassword.getBytes(), "AES");

    public String DecrypData(String MyDecrypData) {
        String DecryptedData = "";
        try {
            AlgorithmParameterSpec paramSpec = new IvParameterSpec(strPassword.getBytes());
            //Whatever you want to encrypt/decrypt using AES /CBC padding
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

            //You can use ENCRYPT_MODE or DECRYPT_MODE
            cipher.init(Cipher.DECRYPT_MODE, key, paramSpec);

            //decode data using standard decoder
            byte[] output = new BASE64Decoder().decodeBuffer(MyDecrypData);

            // Decrypt the data
            byte[] decrypted = cipher.doFinal(output);

            //                  System.out.println("Original string: " +
            //                          new String(input));
            //                  
            // decryptedData .;
            //System.out.println("Decrypted string: " + new String(decrypted));
            DecryptedData = new String(decrypted);

        } catch (NoSuchAlgorithmException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        } catch (NoSuchPaddingException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        } catch (InvalidKeyException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        } catch (InvalidAlgorithmParameterException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IllegalBlockSizeException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        } catch (BadPaddingException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Decrypt.class.getName()).log(Level.SEVERE, null, ex);
        }
        return DecryptedData;
    }
}