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What would happen under the Kerberos v4 protocol if an attacker has compromised TGS and identified the Ktgs key?

What would be the outcomes of such an attack?

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closed as not a real question by Adi, Xander, TildalWave, Scott Pack, Rory Alsop Jun 24 '13 at 19:54

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

KTF - it appears that you are just asking homework questions. We do expect a certain level of effort:-) – Rory Alsop Jun 24 '13 at 19:56

Then there would be no more secrecy. If you manage to get to the Ticket Granting System Kerberos cannot offer any security anymore as you will be able to view the session keys used by clients.

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