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

Answer 1

Well, first off, MD5 isn't encryption. So if you're looking for encryption, you're looking in the wrong place.

But if you just want to hash something using MD5 on an iPhone, this should give you the information you need:

#import 

NSString *md5(NSString *str) {
    const char *cStr = [str UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5( cStr, strlen(cStr), result );
    return [NSString stringWithFormat:@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
        result[0], result[1],
        result[2], result[3],
        result[4], result[5],
        result[6], result[7],
        result[8], result[9],
        result[10], result[11],
        result[12], result[13],
        result[14], result[15]
    ];
}

//…

NSString *digest = md5(@"test");
NSLog(@"MD5 TEST %@", digest);

(From Calculate MD5 on iPhone)