Using MD5 hash on a string in cocoa? [duplicate]

Answer 1

I added the following to my "NSString+MyGoonk" category:

#include <openssl/md5.h>

- (NSString *)md5
{
    NSData *data = [self dataUsingEncoding: NSUTF8StringEncoding];
    unsigned char *digest = MD5([data bytes], [data length], NULL);
    return [NSString stringWithUTF8String: (char *)digest];
}

Two things:

1. this assumes your string is UTF8. I'm sure there's a way to make it more generic, but I almost never use anything else.

2. you have to link -lcrypto into your project.