BouncyCastle Files not found at Runtime

Question

I am trying to do encryption/decryption using
bouncycastle. At compile time, there is no
problem but when I run the J2ME emulator, I get
the error:
java.lang.NoClassDefFoundError: org/bouncycastle/asn1/ASN1InputStream: Cannot create class in system package
Line of code:
          InputStream in = getClass().getResourceAsStream("/public.key");
          ASN1InputStream aIn = new ASN1InputStream(in);
I created a directory called lib under my J2ME project root directory
and I included the files cldc_classes.jar and cldc_crypto.jar
and those classes are in my build path. I am using Java 5 and WTK 2.5
with proguard 4.4 and Eclipse GANYMEDE as IDE.
Any help will be greatly appreciated.
Thanks.
Taji

Answer 1

Okay, I finally figured out the solution to this problem. The bouncy castle jars contain some classes in the java.* package like BigInterger, SecureRandom, etc and these classes are being confused with the regular java.* system packages. So what I did was rename the java.* packages in the bouncy castle files to my own package like simpaq.* and everything worked just fine. I hope this helps someone.
Taji