home *** CD-ROM | disk | FTP | other *** search
- Tony Sanders writes (Sun, 23 May 1993)
-
- > What are you browser writers thinking about supporting wrt HTTP/1.0 request
- > headers (e.g., see the kerberos proposal below)? We need to think about
- > how to implement the ChargeTo: and Authorization: headers in a generic
- > way so the browser can easily support different styles. I would
- > like to see From:, User-Agent:, and Referer: being used (currently
- > I've only seen "Accept: text/plain" and "Authorization: user xxx").
-
- I am successfully using the Authorization field within Hewlett Packard
- for providing restricted access to Web documents:
-
- Two formats:
-
- a) Authorization: user fred:secret
- b) Authorization: user fred
-
- When the browser gets error code 401 (unauthorized) it asks the user
- for a username and password. This is then included as (a) in all subsequent
- queries to the same server (same protocol, port and host name). By default
- the browser always sends the user name as (b) which it obtains from the
- environment variable "USER". This avoid the need for users to type
- anything if they are known to the server via the .rhosts or /etc/hosts.equiv
- mechanism.
-
- This approach matches our needs well, and corresponds to the standard level of
- security offered with FTP, rlogin and telnet. Its really great to see someone
- extending this to support Kerberos!
-
- I have also been studying the privacy enhanced mail proposals and the general
- field of authentication and encryption based on public key techniques. These
- techniques require the setup of registration authorities that permit you to
- look up the public key for any person on the system.
-
- Such an approach would allow servers to use the registered public key of a
- client to check that a request indeed originated from that client.
- Furthermore it would allow clients to be certain that a document obtained
- from a server is indeed by whom it claims to be and hasn't been altered in
- anyway whatsoever.
-
- To do this we will need to define authentication formats for both HTRQ
- and MIME headers. This needs to be done in concert with other groups in
- the Internet. Is anyone interested in picking this up?
-
- Regards,
-
- Dave Raggett
-
-