Objective-C

X509Certificate GetCertHash SHA256

See more Certificates Examples

Shows how to get the SHA256 hash of a certificate. Objective-C

#import <CkoCert.h>
#import <CkoBinData.h>
#import <NSString.h>

BOOL success = NO;

CkoCert *cert = [[CkoCert alloc] init];

//  Load a certificate object with a certificate.
//  The certificate object could have come from any source,
//  or perhaps was obtained from another Chilkat function.
//  The source does not matter.  What matters is that we have
//  a cert object loaded with the certificate..
success = [cert LoadFromFile: @"qa_data/certs/cert_test123.cer"];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

//  Get the binary DER of the certificae, and compute the SHA256 hash:
CkoBinData *bdDer = [[CkoBinData alloc] init];
[cert ExportCertDerBd: bdDer];

//  Get the base64 representation of the SHA256 hash.
NSString *certHash = [bdDer GetHash: @"sha256" encoding: @"base64"];

NSLog(@"%@%@",@"Certificate hash in base64 = ",certHash);