Secure hypertext transfer protocol (S-HTTP) is an alternative mechanism to the
https URI scheme for
encrypting web communications carried over
HTTP. S-HTTP is defined in RFC 2660.
Web browsers typically use HTTP to communicate with
web servers, sending and receiving information without encrypting it. For sensitive transactions, such as Internet
e-commerce or online access to financial accounts, the browser and server must encrypt this information. The https: URI scheme and S-HTTP were both defined in the mid 1990s to address this need.
Netscape and
Microsoft supported
HTTPS rather than S-HTTP, leading to HTTPS becoming the
de facto standard mechanism for securing web communications. S-HTTP is an alternative mechanism that is not widely used.
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SECURE HYPERTEXT TRANSFER PROTOCOL. S-HTTP
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