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https://issues.apache.org/jira/browse/MYFACES-1838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607084#action_12607084
 ] 

Baroch Oren commented on MYFACES-1838:
--------------------------------------

I get this exception sometimes as I restart the web container (jetty). Can't 
say what causes it since the behavior appears to occur randomly. 
My environment: 
Spring 2.0.5 - MyFaces Core 1.2.2 - Tomahawk 1.16 - RichFaces 3.2.0 SR1 - 
Facelets 1.1.14 - Jetty 6.1.2
I'm browsing with IceWeasel 2.0.0.14 - Mozilla/5.0 (X11; U; Linux i686; en-US; 
rv:1.8.1.14) Gecko/20080404 Iceweasel/2.0.0.14 (Debian-2.0.0.14-0etch1) 

Would love to add any other info needed to reproduce.

> javax.crypto.BadPaddingException: Given final block not properly padded
> -----------------------------------------------------------------------
>
>                 Key: MYFACES-1838
>                 URL: https://issues.apache.org/jira/browse/MYFACES-1838
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 1.2.2
>            Reporter: Guy Bashan
>
> I keep getting this exception from time to time when moving between pages:
> javax.faces.FacesException: javax.crypto.BadPaddingException: Given final 
> block not properly padded
>       at 
> org.apache.myfaces.shared_impl.util.StateUtils.symmetric(StateUtils.java:373)
>       at 
> org.apache.myfaces.shared_impl.util.StateUtils.symmetric(StateUtils.java:411)
>       at 
> org.apache.myfaces.shared_impl.util.StateUtils.decrypt(StateUtils.java:291)
>       at 
> org.apache.myfaces.shared_impl.util.StateUtils.reconstruct(StateUtils.java:240)
>       at 
> org.apache.myfaces.renderkit.html.HtmlResponseStateManager.getSavedState(HtmlResponseStateManager.java:184)
>       at 
> org.apache.myfaces.renderkit.html.HtmlResponseStateManager.getState(HtmlResponseStateManager.java:136)
>       at 
> org.apache.myfaces.application.jsp.JspStateManagerImpl.restoreView(JspStateManagerImpl.java:289)
>       at 
> org.apache.myfaces.application.jsp.JspViewHandlerImpl.restoreView(JspViewHandlerImpl.java:505)
>       at 
> org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:85)
>       at 
> org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:103)
>       at 
> org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:76)
>       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:148)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>       at 
> com.vdo.admin.model.persistence.OpenSessionInViewFilterIC.doFilterInternal(OpenSessionInViewFilterIC.java:155)
>       at 
> com.vdo.admin.model.persistence.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:61)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>       at 
> org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>       at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>       at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
>       at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>       at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>       at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>       at 
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
>       at 
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
>       at 
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
>       at 
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
>       at java.lang.Thread.run(Thread.java:619)
> Caused by: javax.crypto.BadPaddingException: Given final block not properly 
> padded
>       at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
>       at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
>       at com.sun.crypto.provider.DESCipher.engineDoFinal(DashoA13*..)
>       at javax.crypto.Cipher.doFinal(DashoA13*..)
>       at 
> org.apache.myfaces.shared_impl.util.StateUtils.symmetric(StateUtils.java:369)
>       ... 30 more

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