Android AES Decrypt decrypt(String key, String src)

Description

decrypt

License

Apache License

Declaration

public static String decrypt(String key, String src) throws Exception 

Method Source Code

//package com.java2s;
/*/*www  . ja  v  a2  s.c o m*/
 * Copyright (C) 2012 A3like zaze8736@163.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import android.util.Base64;

public class Main {
    private final static String DEFAULT_KEY = "ITAG_KEY_MANAGER";
    private final static byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 'A', 'B',
            'C', 'D', 'E', 'F', 0 };

    public static String decrypt(String src) throws Exception {
        return decrypt(DEFAULT_KEY, src);
    }

    public static String decrypt(String key, String src) throws Exception {
        byte[] keyByte = key.getBytes();
        SecretKeySpec keySpec = new SecretKeySpec(keyByte, "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        IvParameterSpec ivSpec = new IvParameterSpec(iv);
        cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
        byte[] srcByte = Base64.decode(src, Base64.DEFAULT);
        byte[] decrypted = cipher.doFinal(srcByte);
        String result = new String(decrypted);
        return result;
    }
}

Related

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