Home/ Questions/Q 9123267
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-17T06:17:53+00:00

I’m using the following: Windows 7 64bit JDK 7 64bit JRE 7 64bit The

  • 0

I’m using the following:

  • Windows 7 64bit
  • JDK 7 64bit
  • JRE 7 64bit

The new funny JRE 7 64bit doesn’t support Sun PKCS11 anymore (which is inside package ‘sun.security.pkcs11’). And the big problem is that the end-users of the product by our company may have installed whatever version of JRE.

So I have to swap up the existing to code in ‘Sun PKCS11’ to ‘IAIK PKCS11 Wrapper‘. The wrapper by IAIK works simply this way:

(iaik-wrapper.jar)->(iaik-pkcs11-jni.dll)->(pki-token-driver.dll)

The PKI token driver dynamic link library is provided by the manufacturer of PKI USB token, it has the actual name of ‘ca2-v34.dll’. The method to load this native driver is described in programmer’s manual as below:

import iaik.pkcs.pkcs11.*;
...

Module pkcs11Driver;
try {
  pkcs11Driver = Module.getInstance("ca2-v34.dll"); //<--exception!
  pkcs11Driver.initialize(null);

  //test
  System.out.println(pkcs11Driver.getInfo());
}
catch (Exception ex) {
  System.out.println(ex);
}

The exception is raised at the line marked in the code above, with this detail: java.io.IOException: %1 is not a valid Win32 application.
ca2-v34.dll

This exception surely means the IAIK library has found the .dll file, but it is not compatible somehow. I’m being stuck at this bottleneck.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    As noted by EJP in the comments right below the question, ca2-v34.dll is a 32bit dll. The sample usb token manager from the manufacturer is a 32bit-throughout software, so it can load this dll file on both Windows 32 and Windows 64.

    The scenario of JRE is different:

    • In case the client computer has JRE 32bit installed, the Java application (.jar file) can run well because the process of JVM is a 32bit process.
    • The other case is that the client computer has JRE 64bit installed, the Java application can not run normally because JVM in this case is a 64bit process, it can load the Java application (.jar file) but fails to load the file ‘ca2-v34.dll’ due to a reason that this dll file is 32bit dll.
    • 0