Objective-C

DSA Public Key PEM to DER Conversion

See more DSA Examples

Converts a DSA public key from PEM format to DER. Objective-C

#import <CkoDsa.h>
#import <NSString.h>

BOOL success = NO;

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

CkoDsa *dsa = [[CkoDsa alloc] init];

//  Load a PEM public key.
NSString *pemPublicKey = 0;
pemPublicKey = [dsa LoadText: @"dsa_pub.pem"];
//  Import the public key PEM into the DSA object.
success = [dsa FromPublicPem: pemPublicKey];
if (success != YES) {
    NSLog(@"%@",dsa.LastErrorText);
    return;
}

//  Write it out as a DER file:
success = [dsa ToPublicDerFile: @"dsa_pub.der"];
if (success != YES) {
    NSLog(@"%@",dsa.LastErrorText);
    return;
}

NSLog(@"%@",@"Finished!");