Having Trouble with Java Cryptography Extension (JCE)

Question

Hi, this is my first attempt at using the JCE. I'm using JCE 1.2.1
and basically all I'm trying to do at this point is encrypt a
FileInputStream object using the DES standard, with the JCE
classes. Here is my code Fragment.
protected FileOutputStream encriptFile(FileInputStream baseFile,
File encFileName) throws IOException
try
// Create the output file for the encrypted document
FileOutputStream encriptedFile = new FileOutputStream
(encFileName);
// Must register the provider that implements the algorithm
Provider sunJce = new com.sun.crypto.provider.SunJCE();
Security.addProvider(sunJce);
char[] pbeKeyData = password.toCharArray();
PBEKeySpec pbeKeySpec = new PBEKeySpec(pbeKeyData);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance
("DES");
SecretKey pbeKey = keyFactory.generateSecret(pbeKeySpec);
Cipher pbe = Cipher.getInstance("DES"); // Same as above.
pbe.init(Cipher.ENCRYPT_MODE, pbeKey);
CipherOutputStream cout = new CipherOutputStream
(encriptedFile, pbe);
// Use a byte array to write the file output in blocks of 64
bytes.
byte[] buffer = new byte[64];
while (true)
int bytesRead = -1;
bytesRead = baseFile.read(buffer);
if (bytesRead == -1) break;
cout.write(buffer, 0, bytesRead);
cout.flush();
cout.close();
baseFile.close(); // Close the input file.
catch (java.security.NoSuchAlgorithmException nsA)
System.err.println(nsA);
nsA.printStackTrace();
catch (java.lang.ExceptionInInitializerError eIIE)
System.err.println(eIIE);
eIIE.printStackTrace();
catch (Exception e)
System.err.println(e);
e.printStackTrace();
My problem arises with the line "SecretKeyFactory keyFactory =
SecretKeyFactory.getInstance("DES");" This line throws an
ExceptionInInitializerError and the catch block tells me this
java.lang.ExceptionInInitializerError
java.lang.ExceptionInInitializerError: java.lang.SecurityException:
Cannot set up certs for trusted CAs
(The rst of the stackCall here)...
From what I've read in the documentation, I need to have a provider
set up that handles the SecretKeyFactory and encryption algorithms,
but the documentation also says that the SunJCE provider that I set
up near the start of my method should have been able to handle this.
Is there anyone out there with expeience doing this kind of thing
that can help.
Thanks,
Dan

Answer 1

Please check out the following:
1. Be sure that the jar file will be viewable from classpath and that the provider you want to use will be in java.security file.
2. In the java.security file you should have something like this:
security.provider.1=sun.security.provider.Sun
security.provider.2=com.sun.crypto.provider.SunJCE
3. If you wish, you can test your program with another JCE implementation, like cryptix.
You can download the api and documentation of cryptix at http://www.cryptix.org/products/index.html
I wish this can be useful to you!!!
Thank you for some duke dollars.