How can I use SHA256 in swift?

Asked Nov 25 '15 at 20:13

Active Dec 05 '16 at 09:17

Viewed 730 times

there are a few threads here on stackoverflow about this topic, but I can't get it working. So I hope you can help me:

I created a header-file called: Crypto.h and it only contains this line:

#import <CommonCrypto/CommonCrypto.h>

Further more, I have a file called StringExtension.swift and it contains this code:

import Foundation

extension String {
    func sha256() -> String {
        let data = self.dataUsingEncoding(NSUTF8StringEncoding)!
        var digest = [UInt8](count:Int(CC_SHA256_DIGEST_LENGTH), repeatedValue: 0)
        CC_SHA256(data.bytes, CC_LONG(data.length), &digest)
        let hexBytes = digest.map { String(format: "%02hhx", $0) }
        return hexBytes.joinWithSeparator("")
    }
}

I got the code from here: How to crypt string to sha1 with Swift? I found on another website, that I can replace sha1 with sha256 if you want to use sha256.

But I errors like this: Use of unresolved identifier 'CC_SHA256_DIGEST_LENGTH'

What am I doing wrong?

edited May 23 '17 at 11:53

Community

asked Nov 25 '15 at 20:13

IceCoala

Do you have a "bridging header file"? Did you add `#import ` to that file? – Martin R Nov 25 '15 at 20:26
is your Crypto.h is set as a bridging header? – Alexander B Nov 25 '15 at 20:26
I didn't know I had to manually add that file to my built settings. I just added a header file. Now these errors are gone, thanks! – IceCoala Nov 25 '15 at 20:41

How can I use SHA256 in swift?

0 Answers0