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.