Where do 4096 bit RSA keys for SSL certs currently stand in terms of things like CA support, browser support, etc? In the overall scheme of things is the increased security worth the risk of 4096 bit keys not having the widespread support and compatibility as 2048 bit keys do, not to mention the increased CPU load required to process the key exchange? Are things slowly turning in favour of 4096?
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Log in to answerBest Answer · By JanBask Cyber Security Expert
Answered on Feb 9, 2022
I always generate 4096 bits encryption keys since the downside is minimal (slightly lower performance) and security is slightly higher (although not as high as one would like). Larger keys like 8192 bit or even larger take forever to generate and require specially patched sw to use so are impractical. Luckily there are other algorithms slowly replacing rsa…
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