(Delphi DLL) Create CAdES (p7m) Signature using ARSS (Aruba Remote Signing Service)

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Demonstrates creating a CAdES (p7m) signature using the Aruba Remote Signing Service.

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

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Cert, JsonObject, Crypt2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
cert: HCkCert;
success: Boolean;
jsonArss: HCkJsonObject;
crypt: HCkCrypt2;
signedAttrs: HCkJsonObject;
inputXmlPath: PWideChar;
outputP7mPath: PWideChar;

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

// Load the certificate used for signing.  The certificate's private key is stored on 
// the Aruba.it server and the signing will happen remotely using the
// ARSS (Aruba Remote Signing Service).
// However, we still need the certificate locally (without private key).
cert := CkCert_Create();
success := CkCert_LoadFromFile(cert,'qa_data/certs/myCert.cer');
if (success = False) then
  begin
    Memo1.Lines.Add(CkCert__lastErrorText(cert));
    Exit;
  end;

// To sign using the Aruba Remote Signing Service, 
// add the following lines of code to specify your authentication credentials,
// and the ID of the certificate w/ private key on the server to be used.
jsonArss := CkJsonObject_Create();

// Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
CkJsonObject_UpdateString(jsonArss,'service','ARSS');
// Specify the certificate ID, such as "AS0"
// This certificate should match the certificate loaded in the above code.
CkJsonObject_UpdateString(jsonArss,'certID','YOUR_ARSS_CERT_ID');
CkJsonObject_UpdateString(jsonArss,'otpPwd','YOUR_OTP_PWD');
CkJsonObject_UpdateString(jsonArss,'typeOtpAuth','demoprod');
CkJsonObject_UpdateString(jsonArss,'user','YOUR_ARSS_USERNAME');
CkJsonObject_UpdateString(jsonArss,'userPWD','YOUR_ARSS_PASSWORD');
success := CkCert_SetCloudSigner(cert,jsonArss);

crypt := CkCrypt2_Create();

success := CkCrypt2_SetSigningCert(crypt,cert);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
    Exit;
  end;

// The CadesEnabled property applies to all methods that create PKCS7 signatures. 
// To create a CAdES-BES signature, set this property equal to true.
CkCrypt2_putCadesEnabled(crypt,True);

CkCrypt2_putHashAlgorithm(crypt,'sha256');

signedAttrs := CkJsonObject_Create();
CkJsonObject_UpdateInt(signedAttrs,'contentType',1);
CkJsonObject_UpdateInt(signedAttrs,'signingTime',1);
CkJsonObject_UpdateInt(signedAttrs,'messageDigest',1);
CkJsonObject_UpdateInt(signedAttrs,'signingCertificateV2',1);
CkCrypt2_putSigningAttributes(crypt,CkJsonObject__emit(signedAttrs));

// You can sign any type of file..
inputXmlPath := 'qa_data/e-Invoice.xml';
outputP7mPath := 'qa_output/signed.p7m';

// Create the CAdES-BES attached signature, which contains the original data.
// Chilkat will build the .p7m locally, but will (internally) use ARSS
// to do the RSA signing remotely.
success := CkCrypt2_CreateP7M(crypt,inputXmlPath,outputP7mPath);
if (success = False) then
  begin
    Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
    Exit;
  end;

Memo1.Lines.Add('Success.');

CkCert_Dispose(cert);
CkJsonObject_Dispose(jsonArss);
CkCrypt2_Dispose(crypt);
CkJsonObject_Dispose(signedAttrs);

end;