(Delphi DLL) Create Egypt ITIDA CAdES-BES .p7s Signature (File to File)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements.

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
crypt: HCkCrypt2;
cert: HCkCert;
success: Boolean;
cmsOptions: HCkJsonObject;
jsonSigningAttrs: HCkJsonObject;
pathOfFileToSign: PWideChar;
outputPath: PWideChar;

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

crypt := CkCrypt2_Create();

cert := CkCert_Create();

// There are many ways to load the certificate.  
// This example was created for a customer using an ePass2003 USB token.
// Assuming the USB token is the only source of a hardware-based private key..
success := CkCert_LoadFromSmartcard(cert,'');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkCert__lastErrorText(cert));
    Exit;
  end;

// Tell the crypt component to use this cert.
success := CkCrypt2_SetSigningCert(crypt,cert);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
    Exit;
  end;

cmsOptions := CkJsonObject_Create();
CkJsonObject_UpdateBool(cmsOptions,'DigestData',True);
CkJsonObject_UpdateBool(cmsOptions,'OmitAlgorithmIdNull',True);
CkCrypt2_putCmsOptions(crypt,CkJsonObject__emit(cmsOptions));

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

CkCrypt2_putHashAlgorithm(crypt,'sha256');

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

// By default, all the certs in the chain of authentication are included in the signature.
// If desired, we can choose to only include the signing certificate:
CkCrypt2_putIncludeCertChain(crypt,False);

// Make sure we sign the utf-8 byte representation of the JSON string
CkCrypt2_putCharset(crypt,'utf-8');

// Create the CAdES-BES signature, which does not contain the data being signed.
pathOfFileToSign := 'someDir/someFile';
outputPath := 'outDir/someFile.p7s';
success := CkCrypt2_CreateP7S(crypt,pathOfFileToSign,outputPath);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkCrypt2__lastErrorText(crypt));
    Exit;
  end;

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

CkCrypt2_Dispose(crypt);
CkCert_Dispose(cert);
CkJsonObject_Dispose(cmsOptions);
CkJsonObject_Dispose(jsonSigningAttrs);

end;