Delphi DLL

Set .pfx/.p12 Safe Bag Attributes

See more PFX/P12 Examples

Demonstrates how to set safebag attributes in a .pfx/.p12. This example creates a .pfx from a .pem containing a private key and certificates, but also sets PFX safebag attributes before writing the .pfx. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Pfx, StringBuilder, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
pfx: HCkPfx;
sbPem: HCkStringBuilder;
password: PWideChar;
forPrivateKey: Boolean;
keyIdx: Integer;
certIdx: Integer;
pfx2: HCkPfx;
json: HCkJsonObject;

begin
success := False;

// We have a PEM containing one private key, and two certificates:
// The private key is an ECDSA private key.
// The private key is associated with the 1st certificate.
// The 2nd certificate is the issuer of the 1st certificate.

// -----BEGIN PRIVATE KEY-----
// ME0CAQAwEwYHKoZIzj0CAQYIKoZIzj0DAQcEMzAxAgEBBCDgAn4Dal+0iEhIsYBk
// 6SdSR344vyj0suhOIxsjmM19s6AKBggqhkjOPQMBBw==
// -----END PRIVATE KEY-----
// -----BEGIN CERTIFICATE-----
// MIIBXzCCAQSgAwIBAgIUGp2obfF61BG7QTsqpyT+VvxxJC0wCgYIKoZIzj0EAwIw
// DTELMAkGA1UEAwwCQ0EwHhcNMjAwMzI5MTU1MTEwWhcNMzAwMzI3MTU1MTEwWjAN
// MQswCQYDVQQDDAJFRTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABEil+DhBUss8
// kMCjEWvZHA+jdy1mQ76a2HFd+5p+AcFGQxNeG8/HXZax7FFzcrczWrli25R8P8j1
// cqhwPY4HtwujQjBAMB0GA1UdDgQWBBTenwm6x4A4W5BzZ2OckKA2IFtPSTAfBgNV
// HSMEGDAWgBTx1U/gWiRhAASl6FV04DxP3XmcazAKBggqhkjOPQQDAgNJADBGAiEA
// rkqbz5t1M/CjqXSKE5ebBLQ3npF+q7GRC8C2ovDi/xoCIQDGve7OP/ppIDcCNonr
// +WSRf5M/6Wvw1lnEsAXf3nLTeQ==
// -----END CERTIFICATE-----
// -----BEGIN CERTIFICATE-----
// MIIBcDCCARWgAwIBAgIUAnQiKKy/PdLnH0A6vYKBq21w1JAwCgYIKoZIzj0EAwIw
// DTELMAkGA1UEAwwCQ0EwHhcNMjAwMzI5MTU1MTEwWhcNMzAwMzI3MTU1MTEwWjAN
// MQswCQYDVQQDDAJDQTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABPB6yVvqt8cL
// EneRtnjoi87H0ATi+JP1w2qkz4GLOaPtFxAnV0LdQCuN91SGbAlKrSkhFyWWimjh
// Rqe9+b/1WCijUzBRMB0GA1UdDgQWBBTx1U/gWiRhAASl6FV04DxP3XmcazAfBgNV
// HSMEGDAWgBTx1U/gWiRhAASl6FV04DxP3XmcazAPBgNVHRMBAf8EBTADAQH/MAoG
// CCqGSM49BAMCA0kAMEYCIQCcIfssfrOruVYvqhxbLGeyc5ppEX53zUU35wIE2t7C
// fAIhAKhOTEvN+pdEn+cNwW3AEi7D08ZUQx3P80i4EnFPs0OQ
// -----END CERTIFICATE-----

pfx := CkPfx_Create();
sbPem := CkStringBuilder_Create();
success := CkStringBuilder_LoadFile(sbPem,'qa_data/pfx/test_ecdsa.pem','utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add('Failed to load the PEM file.');
    Exit;
  end;

// The PEM in this example is unencrypted.  There is no password.
password := '';
success := CkPfx_LoadPem(pfx,CkStringBuilder__getAsString(sbPem),password);
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

// Let's add some safebag attributes for the private key...
forPrivateKey := True;
keyIdx := 0;
success := CkPfx_SetSafeBagAttr(pfx,forPrivateKey,keyIdx,'localKeyId','16777216','decimal');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

success := CkPfx_SetSafeBagAttr(pfx,forPrivateKey,keyIdx,'keyContainerName','{B99EB9E7-6AF7-42AF-A43A-D4B2225B7605}','ascii');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

success := CkPfx_SetSafeBagAttr(pfx,forPrivateKey,keyIdx,'storageProvider','Microsoft Software Key Storage Provider','ascii');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

// Add the localKeyId safebag attribute to the 1st certificate.
forPrivateKey := False;
certIdx := 0;
success := CkPfx_SetSafeBagAttr(pfx,forPrivateKey,certIdx,'localKeyId','16777216','decimal');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

// Write the pfx.
success := CkPfx_ToFile(pfx,'secret','qa_output/ee.pfx');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

// Let's load the .pfx we just wrote to see if the safebag attributes exist.
pfx2 := CkPfx_Create();
success := CkPfx_LoadPfxFile(pfx2,'qa_output/ee.pfx','secret');
if (success = False) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx2));
    Exit;
  end;

// Information about the contents of the PFX was collected in the call to LoadPfxFile.
json := CkJsonObject_Create();
CkPfx_GetLastJsonData(pfx2,json);

CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

// Shows what's in the PFX just loaded:

// {
//   "authenticatedSafe": {
//     "contentInfo": [
//       {
//         "type": "Data",
//         "safeBag": [
//           {
//             "type": "pkcs8ShroudedKeyBag",
//             "attrs": {
//               "keyContainerName": "{B99EB9E7-6AF7-42AF-A43A-D4B2225B7605}",
//               "msStorageProvider": "Microsoft Software Key Storage Provider",
//               "localKeyId": "16777216"
//             }
//           }
//         ]
//       },
//       {
//         "type": "EncryptedData",
//         "safeBag": [
//           {
//             "type": "certBag",
//             "attrs": {
//               "localKeyId": "16777216"
//             },
//             "subject": "EE",
//             "serialNumber": "1a9da86df17ad411bb413b2aa724fe56fc71242d"
//           },
//           {
//             "type": "certBag",
//             "subject": "CA",
//             "serialNumber": "02742228acbf3dd2e71f403abd8281ab6d70d490"
//           }
//         ]
//       }
//     ]
//   }
// }

CkPfx_Dispose(pfx);
CkStringBuilder_Dispose(sbPem);
CkPfx_Dispose(pfx2);
CkJsonObject_Dispose(json);

end;