ua.client.TdOPCUAClient.OnGetCertificate

Occurs when Security Mode is <> None.

Delphi

property OnGetCertificate: TuaGetCertificate;

C++

__property TuaGetCertificate OnGetCertificate;

Description

If you set SecurityMode to Sign or SignAndEncrypt you need additionally a Public Key (Certificate) and a Private Key.

If you want to use security you need a certificate. With our example program DEMO\UA\UACreateCert you can create your own certificate. The easiest way to use it with your programs is to add the private and the public keys as a resource in your project under menu "Project-> Resources and Images".

Add Private-Key as RCDATA and name it to: dOPCPrivateKey

Add Public-Key as RCDATA and name it to: dOPCPublicCertificate

If you want to load the Public Key and Private Key by your own e.g. from file then use this event.

Example

Copy Code

function TdOPCCertForm.dOPCUAClient1GetCertificate(Sender: TObject; var PrivateKey,  PublicCertificate: TStream): Boolean;
var
  FileName: string;
begin
  FileName := ExtractFilePath(Application.ExeName)+'OnCert';
  PrivateKey := TFileStream.create(ChangeFileExt(Filename,'.pem'),fmOpenRead);
  PublicCertificate  := TFileStream.create(ChangeFileExt(Filename,'.der'),fmOpenRead);
  result := true;
end;

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