* 構文

[FIG[
[FIGCAPTION[
[2] [[RFC 1945]] における [CODE(ABNF)[[[credentials]]]] の構文
]FIGCAPTION]

[PRE(ABNF code)[
       credentials    = basic-credentials
                      | ( auth-scheme #auth-param )
]PRE]
]FIG]

[3] [CODE(ABNF)@en[[[auth-scheme]]]] は[[誰何]]でも使われています。

* 歴史

** RFC

[REFS[
- [1] [CITE@en[RFC 1945 - Hypertext Transfer Protocol -- HTTP/1.0]] ([TIME[2012-02-18 23:25:56 +09:00]] 版) <http://tools.ietf.org/html/rfc1945#section-11>
]REFS]