最近项目中用到AES加密，但在网上找了很多的库都是OC与JAVA加密后不能项目解密，因为我们的服务器是用java写的，所以不能通用对于做iOS的就是个大麻烦，Android就比较悠哉用java写所以没什么事。不过，在把度娘全身搜遍后，还是让我找到了这个库，出处记不清了，之前找了好多好多的库。下面记录下使用方法。

例子：http://pan.baidu.com/s/1dDktRPn

OC调用方法：

//
//  ViewController.m
//  AESTest
//
//  Created by 杜甲 on 14-9-22.
//  Copyright (c) 2014年 杜甲. All rights reserved.
//

#import "ViewController.h"
#include "NSData+AES256.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    NSString* message = @"神奇的AES";
    
    NSString* str = [NSData AES256EncryptWithPlainText:message];
    NSString* res = [NSData AES256DecryptWithCiphertext:str];
    NSLog(@"%@",str);
    NSLog(@"%@",res);

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

package com.test.aesforandroid;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		AES mAes = new AES();
	
		String mString = "神奇的AES";
		byte[] mBytes = null;
		
		
		try {
			mBytes = mString.getBytes("UTF8");
			
			
			
		} catch (Exception e) {
			// TODO: handle exception
		}
		String enString = mAes.encrypt(mBytes);
		Log.i("aes123", enString);
		String deString = mAes.decrypt(enString);
		Log.i("aes123", deString);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

OC与JAVA通用的AES加密解密