如何计算iPhone中的SHA1

Question

  

可能重复：
  Is there a library for iPhone to work with HMAC-SHA-1 encoding
  Trying to Write NSString sha1 function, but it’s returning null
  Objective C: SHA1

如何在iphone中计算NSString的SHA1？可以使用哪种api？

Answer 1

也许这个answer会帮助你