Objective-C

Export a Private Key as XML

Demonstrates the Chilkat PrivateKey.GetXml method, which exports the key in Chilkat-compatible XML (for example an RSAKeyValue element). It takes no arguments; the XML is not encrypted.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: The XML key format belongs to the .NET/XML-DSIG world, where keys are represented as XML elements. Exporting to it is what you do to hand a key to .NET code or a system built around XML signatures — the inverse of LoadXml. It is plaintext, so the exported XML must be protected like any unencrypted key.

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Objective-C

#import <CkoPrivateKey.h>
#import <NSString.h>

BOOL success = NO;

//  Load a private key to export.
CkoPrivateKey *privKey = [[CkoPrivateKey alloc] init];
success = [privKey LoadPemFile: @"qa_data/private.pem"];
if (success == NO) {
    NSLog(@"%@",privKey.LastErrorText);
    return;
}

//  Export in Chilkat-compatible XML (for example an RSAKeyValue element).  The XML is not
//  encrypted.
NSString *xml = [privKey GetXml];
if (privKey.LastMethodSuccess == NO) {
    NSLog(@"%@",privKey.LastErrorText);
    return;
}

NSLog(@"%@",xml);