4096 bit SSL keys

[John]

Speaking within the context of https SSL certs, is there any real value to a key/cert above 2048 bits?

The reason I asked: updating a few certs at office recently I nuked an older F5 LTM device by installing a 4096 bit key/cert pair - the load on the appliance (Linux based) shot up from less than 1 to about 30 and became so excruciatingly slow it was nearly impossible to back the change out (web GUI and ssh were both nearly non-responsive)..

On modern hardware, including modern F5s, this problem doesn't exist... but from what reading I've done it seems 4096 buys you very little anyway ?

With a theoretical quantum computer attacking is there any significant gain with the bigger key size?

Curious what others think....



John
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/html
Size: 874 bytes
Desc: not available
URL: <http://lists.cpunks.org/pipermail/cypherpunks/attachments/20160903/922213b4/attachment.txt>