(Objective-C) SHA256 Hash the Bytes Represented in a Hex String
Demonstrates how to compute the SHA256 hash of the bytes represented by a hexidecimal encoded string, and return the hash bytes as an hex encoded string.
#import <NSString.h>
#import <CkoBinData.h>
#import <CkoCrypt2.h>
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
BOOL success;
// We wish to compute the SHA256 hash of the bytes 0x6C 0xF8 0xEA 0x51 0xE4 0xE0 0xF5 0x99 0xCF ...
NSString *src = @"6CF8EA51E4E0F599CF03EC8D58C3DCBC9C889A77FB2816B40DE25C2EC54E98A67EA517B";
CkoBinData *bd = [[CkoBinData alloc] init];
success = [bd AppendEncoded: src encoding: @"hex"];
// The bd now contains the bytes 0x6C 0xF8 0xEA 0x51 0xE4 0xE0 0xF5 0x99 0xCF ...
CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];
crypt.HashAlgorithm = @"sha256";
crypt.EncodingMode = @"hex";
// Hash the bytes contained in bd, and return the 32-byte SHA256 hash as a hexidecimal encoded string.
NSString *result = [crypt HashBdENC: bd];
NSLog(@"%@",result);
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