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java.io.OptionalDataException: 	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)	at com.thortech.xl.crypto.tcSignatureMessage.readObject(tcSignatureMessage.java:97)	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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:969)	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)	at com.thortech.xl.crypto.tcCryptoUtil.getSignedMessage(tcCryptoUtil.java:231)	at oracle.iam.platform.auth.impl.Authenticator.correctSignature(Authenticator.java:253)	at oracle.iam.platform.auth.impl.Authenticator.authenticateWithSignature(Authenticator.java:232)	at oracle.iam.platform.auth.impl.Authenticator.authenticate(Authenticator.java:132)	at oracle.iam.platform.auth.providers.wls.OIMAuthLoginModule.login(OIMAuthLoginModule.java:46)	at com.bea.common.security.internal.service.LoginModuleWrapper$1.run(LoginModuleWrapper.java:110)	at java.security.AccessController.doPrivileged(Native Method)	at com.bea.common.security.internal.service.LoginModuleWrapper.login(LoginModuleWrapper.java:106)	at sun.reflect.GeneratedMethodAccessor1056.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at javax.security.auth.login.LoginContext.invoke(LoginContext.java:769)	at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)	at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)	at javax.security.auth.login.LoginContext.login(LoginContext.java:579)	at com.bea.common.security.internal.service.JAASLoginServiceImpl.login(JAASLoginServiceImpl.java:113)	at sun.reflect.GeneratedMethodAccessor1076.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.bea.common.security.internal.utils.Delegator$ProxyInvocationHandler.invoke(Delegator.java:57)	at $Proxy16.login(Unknown Source)	at weblogic.security.service.internal.WLSJAASLoginServiceImpl$ServiceImpl.login(WLSJAASLoginServiceImpl.java:89)	at com.bea.common.security.internal.service.JAASAuthenticationServiceImpl.authenticate(JAASAuthenticationServiceImpl.java:82)	at sun.reflect.GeneratedMethodAccessor1545.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.bea.common.security.internal.utils.Delegator$ProxyInvocationHandler.invoke(Delegator.java:57)	at $Proxy34.authenticate(Unknown Source)	at weblogic.security.service.WLSJAASAuthenticationServiceWrapper.authenticate(WLSJAASAuthenticationServiceWrapper.java:40)	at weblogic.security.service.PrincipalAuthenticator.authenticate(PrincipalAuthenticator.java:338)	at weblogic.common.internal.RMIBootServiceImpl.authenticate(RMIBootServiceImpl.java:109)	at weblogic.common.internal.RMIBootServiceImpl_WLSkel.invoke(Unknown Source)	at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667)	at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)	at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518)	at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)	at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)