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Editorial Team
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Asked: 2026-06-13T06:22:44+00:00

Hi I am beginner in Java security, i encounter the following issue, when calling

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Hi I am beginner in Java security, i encounter the following issue, when calling :

Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");

I got the error :

java.lang.ClassCastException: com.sun.crypto.provider.RSACipher cannot be cast to javax.crypto.CipherSpi

There are 5 more jars file for a payment gateway encryption in my war file:

  • cryptix-jce-api.jar
  • cryptix-jce-provider.jar
  • cryptix-message-api.jar
  • cryptix-openpgp-provider.jar
  • cryptix-pki-api.jar

Without these 5 JAR files then the Cipher.getInstance() works, but that is not possible because I need the JARs for payment information encryption.

Anyone out there can show me the path of how should I overcome this issue?

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1 Answer

  1. Editorial Team

    Thanks for all the comments and answers.

    In the end, I moved the 5 Jars out from WAR file to server Jars library directory and solved this.

    In between there was an java.lang.RuntimeException: NYI.

    It was solved using the solution from here: http://javabeanz.wordpress.com/2009/06/11/java-lang-runtimeexception-nyi/

    Hope this helps, to anyone out there.

    Once again thanks!

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