(Delphi DLL) 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.

Note: This example requires Chilkat v11.0.0 or greater.

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, JavaKeyStore, PrivateKey, CertChain, Cert;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
jks: HCkJavaKeyStore;
numTrustedCerts: Integer;
numPrivateKeys: Integer;
cert: HCkCert;
alias: PWideChar;
i: Integer;
privKey: HCkPrivateKey;
certChain: HCkCertChain;

begin
success := False;

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

jks := CkJavaKeyStore_Create();

// 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 := CkJavaKeyStore_LoadFile(jks,'jksFilePassword','/someDir/keyStore.jks');
if (success = False) then
  begin
    Memo1.Lines.Add(CkJavaKeyStore__lastErrorText(jks));
    Exit;
  end;

// Find out how many of each type of entry:
numTrustedCerts := CkJavaKeyStore_getNumTrustedCerts(jks);
numPrivateKeys := CkJavaKeyStore_getNumPrivateKeys(jks);

cert := CkCert_Create();

// 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 := CkJavaKeyStore_TrustedCertAt(jks,i,cert);
    Memo1.Lines.Add(CkJavaKeyStore__getTrustedCertAlias(jks,i) + ': ' + CkCert__subjectDN(cert));
    i := i + 1;
  end;

privKey := CkPrivateKey_Create();
certChain := CkCertChain_Create();

// 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
    CkJavaKeyStore_PrivateKeyAt(jks,'jksFilePassword',i,privKey);
    Memo1.Lines.Add(CkJavaKeyStore__getPrivateKeyAlias(jks,i));
    CkJavaKeyStore_CertChainAt(jks,i,certChain);

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

    i := i + 1;
  end;

CkJavaKeyStore_Dispose(jks);
CkCert_Dispose(cert);
CkPrivateKey_Dispose(privKey);
CkCertChain_Dispose(certChain);

end;