Mapping OpenSSL Cipher Suite Names to Official Names and RFCs OpenSSL, and a lot of software that uses it (httpd, nginx etc) have their own cipher suite names. To map from the OpenSSL cipher suite name, such as: ECDHE-ECDSA-AES256-SHA384 1) Look up the ID Use the OpenSSL ciphers(1) tool to look up the cryptographic suite selector code (2 hex values used to represent that cipher suite on the wire)