The HTTPS Info add-on is accessed via the context menu within the Sites Tree or History table. It displays tabs in a status panel, in which various summary information is displayed regarding the target server's HTTPS certificate, and the offered SSL/TLS cipher suites.
This add-on leverages another OWASP project: Deep Violet to perform it's certificate and cipher suite information gathering.
The top portion of a tab is devoted to general details of the SSL/TLS certificate presented by the server. Such as:
The bottom portion of a tab is devoted to enumeration/listing of the specific Cipher Suites the target server offers, grouped by handshake protocol (SSLv2, SSLv3, TLSv1, TLSv1.1, etc.).