Exception at com.trend.iwss.jscan.appscan.runtime.PolicyRuntime.getB64StrPr

Question

WHEN ERROR OCCURS:-
This problem never occured earlier but since the last few days this problem is occuring on my Windows XP System (Version 2002 Service Pack
2).
CLASSPATH includes bcprov-jdk14-134.jar and bcmail-jdk14-134.jar.
At this statement....
signerInformation.verify(cert.getPublicKey(), "BC");the following error appears....
Exception in thread "main" java.lang.NullPointerException
       at com.trend.iwss.jscan.appscan.runtime.PolicyRuntime.getB64StrProp(PolicyRuntime.java:188)
       at com.trend.iwss.jscan.appscan.runtime.PolicyRuntime.<init>(PolicyRuntime.java:91)
       at com.trend.iwss.jscan.appscan.runtime.MiscPolicyRuntime.<init>(MiscPolicyRuntime.java:132)
       at com.trend.iwss.jscan.appscan.runtime.MiscPolicyRuntime$Factory.make(MiscPolicyRuntime.java:254)
       at com.trend.iwss.jscan.appscan.runtime.PolicyRuntime.accessInstance(PolicyRuntime.java:225)
       at com.trend.iwss.jscan.appscan.runtime.PolicyRuntime.preFilter(PolicyRuntime.java:127)
       at com.trend.iwss.jscan.appscan.runtime.MiscPolicyRuntime.preFilter(MiscPolicyRuntime.java:142)
       at org.bouncycastle.crypto.encodings.PKCS1Encoding.<init>(Unknown Source)
       at org.bouncycastle.jce.provider.JDKDigestSignature$SHA1WithRSAEncryption.<init>(Unknown Source)
       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
       at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
       at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
       at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
       at java.lang.Class.newInstance0(Class.java:308)
       at java.lang.Class.newInstance(Class.java:261)
       at java.security.Security.doGetImpl(Security.java:1225)
       at java.security.Security.doGetImpl(Security.java:1172)
       at java.security.Security.getImpl(Security.java:1133)
       at java.security.Signature.getInstance(Signature.java:218)
       at org.bouncycastle.cms.CMSSignedHelper.getSignatureInstance(Unknown Source)
       at org.bouncycastle.cms.SignerInformation.doVerify(Unknown Source)
       at org.bouncycastle.cms.SignerInformation.verify(Unknown Source)
       at Verify.verifySignature(BCTest.java:93)
       at BCTest.main(BCTest.java:20)How can I solve this issue?

Answer 1

I would repeat nothing in my code is 'null'. I can print all the values on the screen. Moreover, If i just use an older version of the jar file of the crypto library I am using, everything works fine. But as soon as I replace the CLASSPATH with the new jar file, the code throws the above mentioned exception.
I repeat, I don't make any changes in the code. But the code runs well with the older jar and doesn't with the new jar.
It has something to do with that com.trend.jscan which is not letting the methods from the new jar run.
Can anyone tell me how to avoid this and let my code run?