Delphi ActiveX

Load Java KeyStore and Access Contents

See more Java KeyStore (JKS) Examples

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. 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;
jks: TChilkatJavaKeyStore;
numTrustedCerts: Integer;
numPrivateKeys: Integer;
cert: TChilkatCert;
alias: WideString;
i: Integer;
privKey: TPrivateKey;
certChain: TChilkatCertChain;

begin
success := 0;

// 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 = 0) then
  begin
    Memo1.Lines.Add(jks.LastErrorText);
    Exit;
  end;

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

cert := TChilkatCert.Create(Self);

// 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
    success := jks.TrustedCertAt(i,cert.ControlInterface);
    Memo1.Lines.Add(jks.GetTrustedCertAlias(i) + ': ' + cert.SubjectDN);
    i := i + 1;
  end;

privKey := TPrivateKey.Create(Self);
certChain := TChilkatCertChain.Create(Self);

// 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
    jks.PrivateKeyAt('jksFilePassword',i,privKey.ControlInterface);
    Memo1.Lines.Add(jks.GetPrivateKeyAlias(i));
    jks.CertChainAt(i,certChain.ControlInterface);

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

    i := i + 1;
  end;
end;