Objective-C

HMAC with SHA256

See more Encryption Examples

Demonstrates how to compute a HMAC SHA256 keyed-hash message authentication code. Objective-C

#import <CkoCrypt2.h>
#import <NSString.h>

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];

//  The output will be Hex, so set the EncodingMode:
crypt.EncodingMode = @"hex";

//  Set the hash algorithm:
//  Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
crypt.HashAlgorithm = @"sha256";
crypt.MacAlgorithm = @"hmac";

NSString *mac = 0;

//  Set the HMAC key:
[crypt SetMacKeyEncoded: @"The_API_Secret" encoding: @"ascii"];
mac = [crypt MacStringENC: @"The quick brown fox jumps over the lazy dog"];
NSLog(@"%@",mac);