(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.

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
jks: HCkJavaKeyStore;
success: Boolean;
numTrustedCerts: Integer;
numPrivateKeys: Integer;
cert: HCkCert;
alias: PWideChar;
i: Integer;
privKey: HCkPrivateKey;
certChain: HCkCertChain;

begin
// 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 <> True) 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);

// 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 := CkJavaKeyStore_GetTrustedCert(jks,i);
    Memo1.Lines.Add(CkJavaKeyStore__getTrustedCertAlias(jks,i) + ': ' + CkCert__subjectDN(cert));
    CkCert_Dispose(cert);
    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 := CkJavaKeyStore_GetPrivateKey(jks,'jksFilePassword',i);
    Memo1.Lines.Add(CkJavaKeyStore__getPrivateKeyAlias(jks,i));
    certChain := CkJavaKeyStore_GetCertChain(jks,i);

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

    CkCert_Dispose(cert);
    CkCertChain_Dispose(certChain);
    CkPrivateKey_Dispose(privKey);
    i := i + 1;
  end;

CkJavaKeyStore_Dispose(jks);

end;