text: //
  //  NSString+CYPHash.h
  //  ButtonTest
  //
  //  Created by songhh on 2017/3/7.
  //  Copyright © 2017年 cheyipai. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSString (CYPHash)
  
  @property (readonly) NSString *md5String;
  @property (readonly) NSString *sha1String;
  @property (readonly) NSString *sha256String;
  @property (readonly) NSString *sha512String;
  
  - (NSString *)hmacSHA1StringWithKey:(NSString *)key;
  - (NSString *)hmacSHA256StringWithKey:(NSString *)key;
  - (NSString *)hmacSHA512StringWithKey:(NSString *)key;
  
  
  @end
  