Convert hex values in an NSData object to NSString?

FROM : Dave Batton
DATE : Thu Nov 29 19:27:29 2007

I'm using Andreas Mayer's NSData_AMDigest category to get an MD5 
digest. It returns an NSData object, but what I need now is an 
NSString of the hex characters.

What's the best way to do this? Sorry, I'm an interface guy, and not 
very good at twiddling bits. Any help would be appreciated.


--
Dave Batton
Mere Mortal Software
http://www.Mere-Mortal-Software.com/blog/