Objective-C

Compute Glacier SHA256 Linear Hash of a File

See more Amazon Glacier Examples

Computes the Amazon Glacier SHA256 linear hash for a file. Objective-C

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

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

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

// The "linear hash" is simply the SHA256 hash of the file bytes.
crypt.HashAlgorithm = @"sha256";

// Return the hash in lowercase hexidecimal format.
crypt.EncodingMode = @"hexlower";

NSString *linearHashHex = [crypt HashFileENC: @"qa_data/jpg/penguins.jpg"];
NSLog(@"%@%@",@"SHA256 linear hash = ",linearHashHex);