Connection Analyzer

Silly check for fixed RSA cipher types

When the server certificate's private key is of RSA type, all is fine:

$ openssl s_client -no_tls1_3 -connect mail.grommunio.com:443
 0 s:CN = mail.grommunio.com
   i:C = US, O = Let's Encrypt, CN = R3
   a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
   v:NotBefore: Aug 27 21:02:07 2024 GMT; NotAfter: Nov 25 21:02:06 2024 GMT
    ...
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES256-GCM-SHA384

Let's Encrypt (certbot) produces ECDSA signatures, which means the ciphers will be ECDHE-ECDSA instead, and Connection Analyzer behaves completely stupid.

$ openssl s_client -no_tls1_3 -connect a4.inai.de:443
 0 s:CN = a4.inai.de
   i:C = US, O = Let's Encrypt, CN = R3
   a:PKEY: id-ecPublicKey, 256 (bit); sigalg: RSA-SHA256
   v:NotBefore: Sep 23 22:10:43 2024 GMT; NotAfter: Dec 22 22:10:42 2024 GMT
    ...
    Protocol  : TLSv1.2
    Cipher    : ECDHE-ECDSA-AES256-GCM-SHA384