(Delphi ActiveX) Load Java KeyStore and Access Contents

Loads a Java keystore file and iterates over the contents. A Java keystore (.jks) file can contain one or more trusted root certificate entries and/or one or more private key entries. Each private key entry includes an associated certificate chain.

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_v9_5_0_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jks: TChilkatJavaKeyStore;
success: Integer;
numTrustedCerts: Integer;
numPrivateKeys: Integer;
cert: IChilkatCert;
alias: WideString;
i: Integer;
privKey: IPrivateKey;
certChain: IChilkatCertChain;

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

jks := TChilkatJavaKeyStore.Create(Self);

//  Load the Java keystore from a file.  The JKS file password is used
//  to verify the keyed digest that is found at the very end of the keystore.
//  It verifies there has been no tampering with the file.
success := jks.LoadFile('jksFilePassword','/someDir/keyStore.jks');
if (success <> 1) then
  begin
    Memo1.Lines.Add(jks.LastErrorText);
    Exit;
  end;

//  Find out how many of each type of entry:
numTrustedCerts := jks.NumTrustedCerts;
numPrivateKeys := jks.NumPrivateKeys;

//  For each trusted certificate, access it by getting
//  it as a cert object.  Also get the alias associated with the certificate.
Memo1.Lines.Add('Trusted Certs:');
i := 0;
while i < numTrustedCerts do
  begin
    cert := jks.GetTrustedCert(i);
    Memo1.Lines.Add(jks.GetTrustedCertAlias(i) + ': ' + cert.SubjectDN);

    i := i + 1;
  end;

//  For each private key entry, get the private key and
//  the associated certificate chain.
//  Each private key is password protected.  Usually it is the same
//  password as used for the keyed digest of the entire JKS.
//  However, this does not have to be.  The password is passed
//  here to handle the possibility of each private key requiring
//  a different password.
Memo1.Lines.Add('Private Keys:');
i := 0;
while i < numPrivateKeys do
  begin
    privKey := jks.GetPrivateKey('jksFilePassword',i);
    Memo1.Lines.Add(jks.GetPrivateKeyAlias(i));
    certChain := jks.GetCertChain(i);

    //  The 1st certificate in the chain is the one associated with the private key.
    cert := certChain.GetCert(0);
    Memo1.Lines.Add(cert.SubjectDN);

    i := i + 1;
  end;
end;