Android AES Decrypt decrypt(String dataPassword, String encrypted)

Description

decrypt

License

Apache License

Declaration

public static String decrypt(String dataPassword, String encrypted)
        throws Exception 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

public class Main {
    private static final byte[] ENCRYPT_IV = { 0x0, 0x0, 0x0, 0x0, 0x0,
            0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
    private static final String CHARSET = "UTF-8";

    public static String decrypt(String dataPassword, String encrypted)
            throws Exception {
        byte[] byteMi = Base64.decodeBase64(encrypted);
        IvParameterSpec zeroIv = new IvParameterSpec(ENCRYPT_IV);
        SecretKeySpec key = new SecretKeySpec(dataPassword.getBytes(),
                "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, key, zeroIv);
        byte[] decryptedData = cipher.doFinal(byteMi);

        return new String(decryptedData, CHARSET);
    }/*w ww  .  j  a  va2s  . c o  m*/
}

Related

1. decrypt(String content, String password)
2. decrypt(String data)
3. decrypt(String encrypted)
4. decrypt(String key, String encrypted)
5. decrypt(String key, String src)
6. decrypt(String seed, String encrypted)