(Delphi ActiveX) Create Egypt ITIDA CAdES-BES .p7s Signature (with strings in-memory)

See more Egypt ITIDA Examples

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

Note: This example requires Chilkat v9.5.0.75 or greater.

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: TChilkatCrypt2;
cert: TChilkatCert;
success: Integer;
cmsOptions: TChilkatJsonObject;
jsonSigningAttrs: TChilkatJsonObject;
textToSign: WideString;
sigBase64: WideString;

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

crypt := TChilkatCrypt2.Create(Self);

cert := TChilkatCert.Create(Self);

// 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 := cert.LoadFromSmartcard('');
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// Tell the crypt component to use this cert.
success := crypt.SetSigningCert(cert.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(crypt.LastErrorText);
    Exit;
  end;

cmsOptions := TChilkatJsonObject.Create(Self);
// Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used.
cmsOptions.UpdateBool('DigestData',1);
cmsOptions.UpdateBool('OmitAlgorithmIdNull',1);
crypt.CmsOptions := cmsOptions.Emit();

// The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. 
// To create a CAdES-BES signature, set this property equal to true. 
crypt.CadesEnabled := 1;

crypt.HashAlgorithm := 'sha256';

jsonSigningAttrs := TChilkatJsonObject.Create(Self);
jsonSigningAttrs.UpdateInt('contentType',1);
jsonSigningAttrs.UpdateInt('signingTime',1);
jsonSigningAttrs.UpdateInt('messageDigest',1);
jsonSigningAttrs.UpdateInt('signingCertificateV2',1);
crypt.SigningAttributes := jsonSigningAttrs.Emit();

// 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:
crypt.IncludeCertChain := 0;

// Make sure we sign the utf-8 byte representation of the JSON string
crypt.Charset := 'utf-8';

// Create the CAdES-BES signature.
textToSign := '"issuer""address""branchID""0""country""EG""regionCity...';

crypt.EncodingMode := 'base64';
sigBase64 := crypt.SignStringENC(textToSign);
if (crypt.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(crypt.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Base64 signature:');
Memo1.Lines.Add(sigBase64);
end;