![]() There's an increase in CPU usage during handshakes.īut you may not be sure of the extent of each of these these effects.The SSL handshake at the start of each connection will be slower.There's an increase in encryption strength.You're probably already aware that with a 4096 bit key: But SSL Labs requires a 4096 bit key to get a 100% score for Key Exchange.GnuPG thinks 4096 bit keys are unnecessary.Most software development websites - GitHub, Stripe, npm, and Mozilla - use 2048 bit EV certificates at present.Since CertSimple only do EV certificates, we use a 2048 bit key in the bash & powershell we generate during our application process.īut why not go further? What experts have to say about 4096 bit keys varies greatly: If you want to show the verified company name in the green bar in a browser, you'll need an EV certificate, which requires a 2048 bit RSA key at minimum.Windows certreq makes you explicitly specify a key size and uses 2048 bit examples in its documentation.OpenSSL now use a 2048 bit key by default. ![]() So you're about to make an RSA key for an SSL certificate.
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