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An Encoding Parameter for HTTP Basic Authentication

Document type: Replaced Internet-Draft (httpauth WG)
Document stream: IETF
Last updated: 2013-06-10 (latest revision 2013-05-08)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

IETF State: Adopted by a WG
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-httpauth-basicauth-enc, draft-ietf-httpauth-basicauth-update
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


The "Basic" authentication scheme defined in RFC 2617 does not properly define how to treat non-ASCII characters. This has lead to a situation where user agent implementations disagree, and servers make different assumptions based on the locales they are running in. There is little interoperability for the non-ASCII characters in the ISO-8859-1 character set, and even less interoperability for any characters beyond that. This document defines a backwards-compatible extension to "Basic", specifying the server's character encoding expectation, using a new authentication scheme parameter.


Julian Reschke <>

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)