Sopenssl View сертификат
openssl x509 -in certificate.crt -text -noout
Vivacious Vulture
openssl x509 -in certificate.crt -text -noout$ echo | openssl s_client -connect redhat.com:443 -brief
CONNECTION ESTABLISHED
Protocol version: TLSv1.2
Ciphersuite: ECDHE-RSA-AES128-GCM-SHA256
Peer certificate: C = US, ST = North Carolina, L = Raleigh, O = "Red Hat, Inc.", OU = Information Technology, CN = *.redhat.com
Hash used: SHA256
Signature type: RSA
Verification: OK
Supported Elliptic Curve Point Formats: uncompressed
Server Temp Key: ECDH, P-256, 256 bits
DONE