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This is an accepted version of this page This is the latest accepted revision, reviewed on 15 February 2025. Extension of the HTTP communications protocol to support TLS encryption Internet protocol suite Application layer BGP DHCP (v6) DNS FTP HTTP (HTTP/3) HTTPS IMAP IRC LDAP MGCP MQTT NNTP NTP OSPF POP PTP ONC/RPC RTP RTSP RIP SIP SMTP SNMP SSH Telnet TLS/SSL XMPP more... Transport layer ...
The central frame and background were designed by Thomas F. Morris. [15] The vignette was engraved by G.F.C. Smillie [14] and the border was engraved by Charles Schlecht. [14] The back was designed by Thomas F. Morris. [15] The Robert Fulton and Samuel F. B. Morse vignettes were engraved by Lorenzo Hatch.
In cryptography, X.509 is an International Telecommunication Union (ITU) standard defining the format of public key certificates. [1] X.509 certificates are used in many Internet protocols, including TLS/SSL, which is the basis for HTTPS, [2] the secure protocol for browsing the web.