An extension to the HTTP protocol
to support sending data securely over the World Wide Web
. Not all Web browsers
support S-HTTP. Another technology for transmitting secure communications over the World Wide Web — Secure Sockets Layer (SSL)
— is more prevalent. However, SSL and S-HTTP have very different designs and goals so it is possible to use the two protocols together. Whereas SSL is designed to establish a secure connection between two computers, S-HTTP is designed to send individual messages securely. Both protocols have been submitted to the Internet Engineering Task Force (IETF)
for approval as a standard
S-HTTP was developed by Enterprise Integration Technologies (EIT), which was acquired by Verifone, Inc. in 1995.