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java.lang.IllegalArgumentException: 	at oracle.security.crypto.util.Utils.a(Unknown Source)	at oracle.security.crypto.util.Utils.fromBase64(Unknown Source)	at oracle.security.digsig.PKCS7Verifier.finish(PKCS7Verifier.java:272)	at oracle.bpel.services.workflow.evidence.validator.SignatureValidator.getSignatureProps(SignatureValidator.java:175)	at oracle.bpel.services.workflow.evidence.validator.SignatureValidator.getCertificateId(SignatureValidator.java:124)	at oracle.bpel.services.workflow.evidence.impl.TaskEvidenceService.getCertificateIdFromStore(TaskEvidenceService.java:783)	at oracle.bpel.services.workflow.evidence.impl.TaskEvidenceService.validateEvidenceType(TaskEvidenceService.java:737)	at oracle.bpel.services.workflow.evidence.impl.TaskEvidenceService.createEvidence(TaskEvidenceService.java:390)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at oracle.bpel.services.workflow.common.WorkflowServiceCacheEventAdvice.invoke(WorkflowServiceCacheEventAdvice.java:91)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at oracle.bpel.services.workflow.test.workflow.ExceptionTestCaseBuilder.invoke(ExceptionTestCaseBuilder.java:155)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at oracle.bpel.services.common.dms.MethodPhaseEventAspect.invoke(MethodPhaseEventAspect.java:82)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at oracle.bpel.services.common.dms.MethodEventAspect.invoke(MethodEventAspect.java:70)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at undefined.$Proxy559.createEvidence(Unknown Source)	at oracle.bpel.services.workflow.task.impl.TaskService.createTaskEvidence(TaskService.java:3214)	at oracle.bpel.services.workflow.task.impl.TaskService.updateTaskOutcome(TaskService.java:3158)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at oracle.bpel.services.workflow.common.WorkflowServiceCacheEventAdvice.invoke(WorkflowServiceCacheEventAdvice.java:91)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at oracle.bpel.services.workflow.test.workflow.ExceptionTestCaseBuilder.invoke(ExceptionTestCaseBuilder.java:155)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at oracle.bpel.services.common.dms.MethodEventAspect.invoke(MethodEventAspect.java:70)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at oracle.bpel.services.common.dms.MethodPhaseEventAspect.invoke(MethodPhaseEventAspect.java:82)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at undefined.$Proxy269.updateTaskOutcome(Unknown Source)	at oracle.bpel.services.workflow.task.ejb.TaskServiceBean.updateTaskOutcome(TaskServiceBean.java:582)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)	at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at com.oracle.pitchfork.spi.MethodInvocationVisitorImpl.visit(MethodInvocationVisitorImpl.java:34)	at weblogic.ejb.container.injection.EnvironmentInterceptorCallbackImpl.callback(EnvironmentInterceptorCallbackImpl.java:54)	at com.oracle.pitchfork.spi.EnvironmentInterceptor.invoke(EnvironmentInterceptor.java:42)	at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)	at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)	at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)	at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at undefined.$Proxy330.updateTaskOutcome(Unknown Source)	at oracle.bpel.services.workflow.task.ejb.TaskServiceBean_399vcw_EOImpl.__WL_invoke(Unknown Source)	at weblogic.ejb.container.internal.SessionRemoteMethodInvoker.invoke(SessionRemoteMethodInvoker.java:40)	at oracle.bpel.services.workflow.task.ejb.TaskServiceBean_399vcw_EOImpl.updateTaskOutcome(Unknown Source)	at oracle.bpel.services.workflow.task.ejb.TaskServiceBean_399vcw_EOImpl_WLSkel.invoke(Unknown Source)	at weblogic.rmi.internal.ServerRequest.sendReceive(ServerRequest.java:174)	at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:345)	at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:259)	at oracle.bpel.services.workflow.task.ejb.TaskServiceBean_399vcw_EOImpl_1036_WLStub.updateTaskOutcome(Unknown Source)	at oracle.bpel.services.workflow.task.client.TaskServiceRemoteClient.updateTaskOutcome(TaskServiceRemoteClient.java:2213)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at oracle.bpel.services.workflow.client.WFClientRetryInvocationHandler.invokeTarget(WFClientRetryInvocationHandler.java:133)	at oracle.bpel.services.workflow.client.WFClientRetryInvocationHandler.invoke(WFClientRetryInvocationHandler.java:72)	at undefined.$Proxy557.updateTaskOutcome(Unknown Source)	at oracle.bpel.worklistapp.tasklist.beans.model.SignTaskModel.signTask(SignTaskModel.java:110)	at oracle.bpel.worklistapp.tasklist.beans.controller.TaskController.signTask(TaskController.java:1314)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.sun.el.parser.AstValue.invoke(AstValue.java:187)	at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)	at org.apache.myfaces.trinidadinternal.taglib.util.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:53)	at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodBinding(UIXComponentBase.java:1256)	at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:183)	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)	at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._invokeApplication(LifecycleImpl.java:890)	at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:379)	at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:194)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)	at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)	at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)	at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.help.web.rich.OHWFilter.doFilter(Unknown Source)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)	at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:447)	at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)	at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:447)	at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)	at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)	at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)	at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)	at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)	at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)	at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)	at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)	at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)	at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)	at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)	at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)	at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)	at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)	at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)	at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)	at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)	at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57)	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)	at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)	at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)	at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)	at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)