Delphi ActiveX

Subject Alternative Name for ICP Brasil Certs

See more Certificates Examples

Demonstrates how to access the multiple names contained in the Subject Alternative Name of a certificate. This example is for an ICP Brasil certificate. Delphi ActiveX

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
success: Integer;
cert: TChilkatCert;
subjectAltNameXml: WideString;
xml: TChilkatXml;
oid: WideString;
name: WideString;
i: Integer;
count_i: Integer;

begin
success := 0;

cert := TChilkatCert.Create(Self);

success := cert.LoadFromFile('qa_data/certs/testIcpBrasil.cer');
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// If the cert's Subject Alternative Name contains multiple values, each specified by an OID,
// then the Rfc822Name property returns XML.
subjectAltNameXml := cert.Rfc822Name;

Memo1.Lines.Add(subjectAltNameXml);

// Here's a sample of the subjectAltNameXml:

// <SubjectAltName>
//     <name type="oid" oid="2.16.76.1.3.4">290999653223955019700000000000000000000150424SRJUXPTS</name>
//     <name type="oid" oid="2.16.76.1.3.2">JOAO SILVA</name>
//     <name type="oid" oid="2.16.76.1.3.3">02408939000115</name>
//     <name type="oid" oid="2.16.76.1.3.7">000000000000</name>
// </SubjectAltName>

// The XML can be parsed like this:

xml := TChilkatXml.Create(Self);
xml.LoadXml(subjectAltNameXml);

i := 0;
count_i := xml.NumChildrenHavingTag('name');
while i < count_i do
  begin
    xml.I := i;
    oid := xml.ChilkatPath('name[i]|(oid)');
    name := xml.GetChildContent('name[i]');
    Memo1.Lines.Add(oid + ': ' + name);
    i := i + 1;
  end;
end;