Do youmean key rotation or rekeying? I'd check Lukx Paterson
        https://www.isg.rhul.ac.uk/~kp/TLS-AEbounds.pdf
Limits on Authenticated Encryption Use in TLS

All the best
        Tanja

On Thu, Jun 24, 2021 at 05:31:58PM +0000, Salz, Rich wrote:
> I’m blanking on a term and web searches turn up too much useless info.
> 
>  
> 
> What is it called when we have to start using a new symmetric key because 
> we’ve
> encrypted too much data with the old one?  Key exhaustion fits, but probably
> isn’t it.
> 
>  
> 
>  
> 

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