text: //
  //  NSString+MD5.h
  //  Categories
  //
  //  Created by fengjiwen on 16/9/27.
  //  Copyright © 2016年 云之彼端. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSString (MD5)
  
  // 返回大写MD5
  @property (assign, nonatomic, readonly) NSString *MD5;
  
  // 返回小写md5
  @property (assign, nonatomic, readonly) NSString *md5;
  
  @end
  