[Freeipa-users] Authentication Failure from Java - LoginException PREAUTH_FAILED - Partly Solved

[Darran Lofthouse]

Just sending a quick update as I am able to move on from this issue now.

I have now moved over to Fedora 17 with the version of FreeIPA currently 
packaged for Fedora 17 and after getting over the installation hang I 
can confirm that my Java client is authenticating without issue against 
the newly installed server.

At this point I don't know what is causing the failure on the previous 
version but I am suspecting some incompatibility with the messages 
generated with Java.

Regards,
Darran Lofthouse.


On 05/31/2012 10:28 AM, Darran Lofthouse wrote:
> My apologies if this has already been discussed somewhere, I have tried
> a number of searches to see if this is either a known issue or common
> error on the client side but so far only found references to Java issues
> that should have been resolved a long time ago.
>
> I have a Red Hat server running in Amazon EC2 with IPA
> ipa-server-2.1.3-9.el6.x86_64 installed - I have an admin user and a
> test_user defined.
>
>  From my local machine using kinit works without error.
>
> I have developed a test Java client to make use of the Krb5LoginModule,
> I am currently debugging further but thought I would mail this in
> parallel in case I am missing something obvious but I keep getting the
> failure that is at the bottom of this message.
>
> This failure is reported when using java-1.7.0-openjdk-1.7.0.3.x86_64 -
> however I have also tried using various Oracle JDKs, both 6 and 7.
>
> I know the password is correct as verified using kinit, also if I use
> jdk1.6.0_30 AND set the system property for Kerberos debugging to true
> on the client it works.
>
> The only difference I currently see between the failure scenario and
> success scenario is that for success rc4-hmac is selected for the
> PA-ENC-TIMESTAMP for the failure scenario here aes256-cts-hmac-sha1-96
> is selected instead.
>
> For the work I am currently using IPA for I could just force the use of
> rc4-hmac but would really like to get to the bottom of the cause of this.
>
> Looking forward to any ideas.
>
> Regards,
> Darran Lofthouse.
>
>
> Exception in thread "main" javax.security.auth.login.LoginException:
> Integrity check on decrypted field failed (31) - PREAUTH_FAILED
>      at
> com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:759)
>
>      at
> com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:580)
>
>      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>      at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>
>      at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>
>      at java.lang.reflect.Method.invoke(Method.java:601)
>      at
> javax.security.auth.login.LoginContext.invoke(LoginContext.java:784)
>      at
> javax.security.auth.login.LoginContext.access$000(LoginContext.java:203)
>      at javax.security.auth.login.LoginContext$5.run(LoginContext.java:721)
>      at javax.security.auth.login.LoginContext$5.run(LoginContext.java:719)
>      at java.security.AccessController.doPrivileged(Native Method)
>      at
> javax.security.auth.login.LoginContext.invokeCreatorPriv(LoginContext.java:718)
>
>      at javax.security.auth.login.LoginContext.login(LoginContext.java:590)
>      at
> com.darranl.as.sasl.gssapi.KerberosLoginUtil.login(KerberosLoginUtil.java:50)
>
>      at
> com.darranl.as.sasl.gssapi.KerberosLoginUtil.main(KerberosLoginUtil.java:136)
>
> Caused by: KrbException: Integrity check on decrypted field failed (31)
> - PREAUTH_FAILED
>      at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:82)
>      at sun.security.krb5.KrbAsReqBuilder.send(KrbAsReqBuilder.java:316)
>      at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:361)
>      at
> com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:721)
>
>      ... 14 more
> Caused by: KrbException: Identifier doesn't match expected value (906)
>      at sun.security.krb5.internal.KDCRep.init(KDCRep.java:143)
>      at sun.security.krb5.internal.ASRep.init(ASRep.java:65)
>      at sun.security.krb5.internal.ASRep.<init>(ASRep.java:60)
>      at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:60)
>      ... 17 more