encrypted tapes (was Re: Papers about "Algorithm hiding" ?)

[Dan Kaminsky]

>2) The cost in question is so small as to be unmeasurable.
>
>  
>
Yes, because key management is easy or free.

Also, reliability of encrypted backups is problematic:  CBC modes render
a single fault destructive to the entire dataset.  Counter mode is
sufficiently new that it's not supported by existing code.

--Dan


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