(Objective-C) AWS KMS Import PFX Key

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Imports a certificate's private key from a .pfx file to new key created in AWS KMS.

Note: This example requires Chilkat v9.5.0.96 or later.

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#import <CkoCert.h>
#import <CkoPrivateKey.h>
#import <CkoJsonObject.h>

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

// Note: This example is using a relative file path.  You can also specify a full file path, such as "C:/someDir/myCertAndKey.pfx"
// or a file path the makes sense on non-Windows operating systems..
CkoCert *cert = [[CkoCert alloc] init];
BOOL success = [cert LoadPfxFile: @"qa_data/pfx/myCertAndKey.pfx" password: @"pfx_password"];
if (success == NO) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

// Get the cert's private key.  This is what will be uploaded to AWS KMS.
CkoPrivateKey *privKey = [cert ExportPrivateKey];
if (cert.LastMethodSuccess == NO) {
    NSLog(@"%@",@"The certificate does not have a private key.");
    return;
}

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"service" value: @"aws-kms"];
[json UpdateString: @"auth.access_key" value: @"AWS_ACCESS_KEY"];
[json UpdateString: @"auth.secret_key" value: @"AWS_SECRET_KEY"];
[json UpdateString: @"auth.region" value: @"us-west-2"];
[json UpdateString: @"description" value: @"Test of uploading existing private key to AWS KMS"];

// Let's add some information about the certificate this key belongs to.
// This is for informational purposes only, so that we can examine the tags
// in the AWS KMS console and know the corresponding certificate.
[json UpdateString: @"tags[0].key" value: @"CertSerial"];
[json UpdateString: @"tags[0].value" value: cert.SerialNumber];
[json UpdateString: @"tags[1].key" value: @"CertIssuer"];
[json UpdateString: @"tags[1].value" value: cert.IssuerCN];
[json UpdateString: @"tags[2].key" value: @"CertSubject"];
[json UpdateString: @"tags[2].value" value: cert.SubjectCN];

[json UpdateString: @"keyUsage" value: @"SIGN_VERIFY"];

// The UploadToCloud method was added in Chilkat v9.5.0.96
CkoJsonObject *jsonOut = [[CkoJsonObject alloc] init];
success = [privKey UploadToCloud: json jsonOut: jsonOut];
if (success == NO) {
    NSLog(@"%@",privKey.LastErrorText);

    return;
}

// When successful, the jsonOut contains information about the private key in AWS KMS.
// Most importantly, the KeyId.
jsonOut.EmitCompact = NO;
NSLog(@"%@",[jsonOut Emit]);

// Sample JSON result:

// {
//   "AWSAccountId": "954491834127",
//   "Arn": "arn:aws:kms:us-west-2:954491834127:key/187012e8-008f-4fc7-b100-5efe6146dff2",
//   "KeySpec": "RSA_4096",
//   "Description": "Test of uploading existing private key to AWS KMS",
//   "KeyId": "187012e8-008f-4fc7-b100-5efe6146dff2",
//   "KeyUsage": "SIGN_VERIFY"
// }