[cryptography] 100 Gbps line rate encryption

William Allen Simpson william.allen.simpson at gmail.com
Thu Jul 18 07:59:31 EDT 2013

On 7/18/13 4:36 AM, Tor Erling Bjørstad wrote:
> What makes HC-* interesting to me is that it's pretty much as fast as one
> gets it, for a strong pure software cipher encrypting long streams of data.
> If one has a limited number of data streams that are pushing a huge number
> of bits over the wire, HC-* seems pretty appealing. If the use-case instead
> involves a zillion independent short packets that all need to be encrypted
> with a unique key/IV combo, then HC's performance will indeed suck.
It's the perennial problem that cryptographers design for theoretical
scenarios.  That's why it's better not to let them design net protocols.

The average packet used to be 41 bytes.  I think I read its now ~43 bytes,
but even the average HTTP GET is ~600 bytes.

Did they define operating for an actual traditional longer-term key
with a per packet IV?  If not, I'll just use my usual one.

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