text: //
  //  NSString+Encryption.h
  //  CommonFunction
  //
  //  Created by zh on 2018/6/7.
  //  Copyright © 2018年 zh. All rights reserved.
  //  字符串加密解密分类
  
  #import <Foundation/Foundation.h>
  
  @interface NSString (Encryption)
  
  - (NSString *)MD5Str;
  
  @end
  