NESSETT@CCC.MFECC.LLNL.GOV (05/18/89)
Dave, To solve the secure time synchronization problem, you will need more than an authenticated time service. It must not be possible to replay synchronization messages thereby setting a local clock back by an arbitrary amount. Perhaps the protocol you use prevents this. We found that designing a secure time synchronization protocol to be equivalent to designing a secure connection protocol. Dan