HTTPAuth Working GroupJ. Reschke
Internet-Draftgreenbytes
Obsoletes: chat gratis libera (if approved)January 16, 2015
Intended status: Standards Track
Expires: July 20, 2015

free chat mobile online The 'Basic' HTTP Authentication Scheme

draft-ietf-httpauth-basicauth-update-05

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free chat mobile software This document defines the "Basic" Hypertext Transfer Protocol (HTTP) Authentication Scheme, which transmits credentials as userid/password pairs, obfuscated by the use of Base64 encoding.chat gratis lima peru

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free chat indian site This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English.chat gratis y facil


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chat free india online This document defines the "Basic" Hypertext Transfer Protocol (HTTP) Authentication Scheme, which transmits credentials as userid/password pairs, obfuscated by the use of Base64 encoding (HTTP authentication schemes are defined in [RFC7235]).chat gratis terra mas de 40

free chat room india online This scheme is not considered to be a secure method of user authentication unless used in conjunction with some external secure system such as TLS (Transport Layer Security, [RFC5246]), as the user name and password are passed over the network as cleartext.chat gratis terra españa

free chat india rooms The "Basic" scheme previously was defined in chat gratis terra alicante of [RFC2617]. This document updates the definition, and also addresses internationalization issues by introducing the "charset" authentication parameter (chat gratis terra murcia).chat gratis terra chile

paginas de chat gay gratis en mexico Other documents updating RFC 2617 are "Hypertext Transfer Protocol (HTTP/1.1): Authentication" ([RFC7235], defining the authentication framework) and "HTTP Digest Access Authentication" ([DIGEST], updating the definition of the '"Digest" authentication scheme). Taken together, these three documents obsolete RFC 2617.chat gratis terra argentina

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chat gratis en argentina tucuman The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119].chat for free funktioniert nicht

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chat gratis en argentina buenos aires This specification uses the Augmented Backus-Naur Form (ABNF) notation of [RFC5234].free chat flirt fun

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chat gratis en argentina terra The "Basic" authentication scheme is based on the model that the client needs to authenticate itself with a user-ID and a password for each protection space ("realm"). The realm value is an opaque string which can only be compared for equality with other realms on that server. The server will service the request only if it can validate the user-ID and password for the protection space applying to the requested resource.mi chat gratis temuco

chat gratis en argentina para mayores de 50 años The "Basic" authentication scheme utilizes the Authentication Framework as follows:chat gratis sin java temuco chile

chat gratis en argentina capital federal In challenges: chat gratis amigos girardot

chat gratis en argentina mayores de 40 Note that both scheme and parameter names are matched case-insensitively.chat gratis amigos colombia

chat gratis en argentina mas de 40 For credentials, the "token68" syntax defined in chat gratis amigos estados unidos of [RFC7235] is used. The value is computed based on user-id and password as defined below.chat gratis amigos en español

chat gratis de argentina buenos aires Upon receipt of a request for a URI within the protection space that lacks credentials, the server can reply with a challenge using the 401 (Unauthorized) status code ([RFC7235], chat gratis amigos de 50 años y mas) and the WWW-Authenticate header field ([RFC7235], chat gratis amigos de todo el mundo).chat gay gratis antofagasta chile

salas de chat gratis en argentina For instance:

HTTP/1.1 401 Unauthorized
Date: Mon, 04 Feb 2014 16:50:53 GMT
WWW-Authenticate: Basic realm="WallyWorld"

chat gratis de argentina santa fe ...where "WallyWorld" is the string assigned by the server to identify the protection space.

chat gratis de argentina buenos aires chatz A proxy can respond with a similar challenge using the 407 (Proxy Authentication Required) status code ([RFC7235], mi chat gratis antofagasta) and the Proxy-Authenticate header field ([RFC7235], chat chapin gratis guatemala).chat gratis guatemala sin registro

chat gratis de argentina para celular To receive authorization, the client chat gratis claro guatemala

  1. obtains the userid and password from the user,
  2. constructs the user-pass by concatenating userid, a single colon (":") character, and the password,
  3. encodes the user-pass into an octet sequence (see below for a discussion of character encoding schemes),
  4. and obtains the basic-credentials by encoding this octet sequence using base64 ([RFC4648], chat movistar gratis guatemala) into a sequence of US-ASCII characters ([RFC0020]).

chat gratis de argentina rosario The original definition of this authentication scheme failed to specify the character encoding scheme used to convert the user-pass into an octet sequence. In practice, most implementations chose either a local-specific encoding such as ISO-8859-1 ([ISO-8859-1]), or UTF-8 ([RFC3629]). For backwards compatibility reasons, this specification continues to leave the default encoding undefined, as long as it is compatible with US-ASCII (mapping any US-ASCII character to a single octet matching the US-ASCII character code).chat toing gratis guatemala

chat gratis de argentina cordoba The userid and password MUST NOT contain any control characters (see "CTL" in chat gratis guatemala cristiano of [RFC5234]).chat gratis guatemala sin java

chat gratis gente separada Furthermore, a userid containing a colon character is invalid, as recipients will split the user-pass at the first occurence of a colon character. Note that many user agents however will accept a colon in userid, thereby producing a user-pass string that recipients will likely treat in a way not intended by the user.chat gratis para guatemala

chat gratis gentechats If the user agent wishes to send the userid "Aladdin" and password "open sesame", it would use the following header field:

Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==

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chat gratis gente hispana In challenges, servers can use the "charset" authentication parameter to indicate the character encoding scheme they expect the user agent to use when generating "user-pass" (a sequence of octets). This information is purely advisory.salas de chat gratis en españa

chat gratis gente palmas The only allowed value is "UTF-8", to be matched case-insensitively (see [RFC2978], chat gratis de españa madrid). It indicates that the server expects character data to be converted to Unicode Normalization Form C ("NFC", see chat de españa gratis sin registrarse of [RFC5198]) and to be encoded into octets using the UTF-8 character encoding scheme ([RFC3629]).chat gratis en españa mas de 40

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free chat rooms for horse lovers In the example below, the server prompts for authentication in the "foo" realm, using Basic authentication, with a preference for the UTF-8 character encoding scheme:

WWW-Authenticate: Basic realm="foo", charset="UTF-8"

free chat rooms for love Note that the parameter value can be either a token or a quoted string; in this case the server chose to use the quoted-string notation.

free chat looking for love The user's name is "test", and the password is the string "123" followed by the Unicode character U+00A3 (POUND SIGN). Using the character encoding scheme UTF-8, the user-pass becomes:chat gratis colombia pereira

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74  65  73  74  3A  31  32  33  C2  A3  

sala chat granada gratis Encoding this octet sequence in Base64 ([RFC4648], chat gratis colombia amigos) yields:chat gratis colombia barranquilla

dGVzdDoxMjPCow==

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Authorization: Basic dGVzdDoxMjPCow==

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Proxy-Authorization: Basic dGVzdDoxMjPCow==

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chat gratis granada españa Given the absolute URI ([RFC3986], chat gratis en espanol para celular) of an authenticated request, the authentication scope of that request is obtained by removing all characters after the last slash ("/") character of the path component ("hier_part", see [RFC3986], chat gratis en espanol sin registro). A client SHOULD assume that resources identified by URIs with a prefix-match of the authentication scope are also within the protection space specified by the realm value of the that authenticated request.chat gratis en espanol houston

chat gratis granada ligar A client MAY preemptively send the corresponding Authorization header field with requests for resources in that space without receipt of another challenge from the server. Similarly, when a client sends a request to a proxy, it may reuse a userid and password in the Proxy-Authorization header field without receiving another challenge from the proxy server.chat gratis en espanol sin java

chat gratis con mujeres de granada For example, given an authenticated request to:

http://example.com/docs/index.html

chat online gratis granada ...requests to the URIs below could use the known credentials:

http://example.com/docs/
http://example.com/docs/test.doc
http://example.com/docs/?page=1

chat guia gay granada gratis ...while the URIs

http://example.com/other/
https://example.com/docs/

chat gratis granada sin registro would be considered to be outside the authentication scope.

chat gratis argentina capital federal Note that a URI can be part of multiple authentication scopes (such as "http://example.com/" and "http://example.com/docs/"). This specification does not define which of these should be treated with higher priority.chat gratis en espanol sin registro y sin java

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chat gratis argentina para celular User names or passwords containing characters outside the US-ASCII character repertoire will cause interoperability issues, unless both communication partners agree on what character encoding scheme is to be used. Servers can use the new 'charset' parameter (chat gratis italy senza registrazione) to indicate a preference of "UTF-8", increasing the probability that clients will switch to that encoding.chat gratis italiano español

chat gratis argentinas The "realm" parameter carries data that can be considered textual, however [RFC7235] does not define a way to reliably transport non-US-ASCII characters. This is a known issue that would need to be addressed in that specification.chat gratis italia

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chat gratis argentina online The Basic authentication scheme is not a secure method of user authentication, nor does it in any way protect the entity, which is transmitted in cleartext across the physical network used as the carrier. HTTP does not prevent the addition of enhancements (such as schemes to use one-time passwords) to Basic authentication.chat gratis en linea bogota

chat gratis argentina mas de 60 The most serious flaw in Basic authentication is that it results in the cleartext transmission of the user's password over the physical network. Many other authentication schemes address this problem.chat gratis en linea guayaquil

chat gratis argentina buenos aires Because Basic authentication involves the cleartext transmission of passwords it SHOULD NOT be used (without enhancements such as HTTPS [RFC2818]) to protect sensitive or valuable information.chat gratis en linea mexico

chat gratis argentina mas de 40 A common use of Basic authentication is for identification purposes — requiring the user to provide a user name and password as a means of identification, for example, for purposes of gathering accurate usage statistics on a server. When used in this way it is tempting to think that there is no danger in its use if illicit access to the protected documents is not a major concern. This is only correct if the server issues both user name and password to the users and in particular does not allow the user to choose his or her own password. The danger arises because naive users frequently reuse a single password to avoid the task of maintaining multiple passwords.chat gratis en linea con camara

chat gratis argentina mas de 50 If a server permits users to select their own passwords, then the threat is not only unauthorized access to documents on the server but also unauthorized access to any other resources on other systems that the user protects with the same password. Furthermore, in the server's password database, many of the passwords may also be users' passwords for other sites. The owner or administrator of such a system could therefore expose all users of the system to the risk of unauthorized access to all those sites if this information is not maintained in a secure fashion. This raises both security and privacy concerns ([RFC6973]). If the same username and password combination is in use to access other accounts, such as an email or health portal account, personal information could be exposed.chat gratis en linea colombia

chat gratis argentina terra Basic Authentication is also vulnerable to spoofing by counterfeit servers. If a user can be led to believe that he is connecting to a host containing information protected by Basic authentication when, in fact, he is connecting to a hostile server or gateway, then the attacker can request a password, store it for later use, and feign an error. This type of attack is not possible with Digest Authentication. Server implementers SHOULD guard against the possibility of this sort of counterfeiting by gateways or CGI scripts. In particular it is very dangerous for a server to simply turn over a connection to a gateway. That gateway can then use the persistent connection mechanism to engage in multiple transactions with the client while impersonating the original server in a way that is not detectable by the client.chat gratis en linea para celular

chat gratis para movil java The use of the UTF-8 character encoding scheme introduces additional security considerations; see chat gratis en linea con mujeres of [RFC3629] for more information.latin chat gratis panama

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chat gratis para movil sin java ni flash IANA maintains the registry of HTTP Authentication Schemes ([RFC7235]) at <chat gratis en panama con mujeres>.chat amigos gratis panama

chat gratis para moviles sin internet The entry for the "Basic" Authentication Scheme shall be updated with a pointer to this specification.chat gratis solo panama

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chat gratis para moviles php This specification takes over the definition of the "Basic" HTTP Authentication Scheme, previously defined in RFC 2617. We thank John Franks, Phillip M. Hallam-Baker, Jeffery L. Hostetler, Scott D. Lawrence, Paul J. Leach, Ari Luotonen, and Lawrence C. Stewart for their work on that specification, from which significant amounts of text were borrowed. See chat gratis panama cool of [RFC2617] for further acknowledgements.chat gratis torino senza registrazione

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chat gratis para movil valencia We also thank the members of the HTTPAuth Working Group and other reviewers, namely Stephen Farrell, Bjoern Hoehrmann, Kari Hurtta, Amos Jeffries, Benjamin Kaduk, Michael Koeller, James Manger, Kathleen Moriarty, Yaron Sheffer, Michael Sweet, and Martin Thomson for feedback on this revision.chat gratis california usa

chat gratis piu usate References

chat gratis usa sin registro Normative References

[PRECIS]
Saint-Andre, P. and A. Melnikov, “chat gratis usa espanol”, Internet-Draft draft-ietf-precis-saslprepbis-12 (work in progress), December 2014.
[RFC0020]
Cerf, V., “chat gratis de merida venezuela”, RFC 20, October 1969.
[RFC2119]
Bradner, S., “chat gratis de venezuela carabobo”, BCP 14, RFC 2119, March 1997.
[RFC2978]
Freed, N. and J. Postel, “chat gratis de venezuela caracas”, BCP 19, RFC 2978, October 2000.
[RFC3629]
chat gratis de ambiente venezuela, “chat gratis de venezuela sin java”, STD 63, RFC 3629, November 2003.
[RFC3986]
Berners-Lee, T., Fielding, R., and L. Masinter, “chat gratis de venezuela sin registro”, STD 66, RFC 3986, January 2005.
[RFC4648]
Josefsson, S., “chat gratis de venezuela con camara”, RFC 4648, October 2006.
[RFC5198]
Klensin, J. and M. Padlipsky, “chat gratis de venezuela aragua”, RFC 5198, March 2008.
[RFC5234]
chat gratis paraguay ciudad del este and chat gratis encarnacion paraguay, “chat gratis paraguay asuncion”, STD 68, RFC 5234, January 2008.
[RFC6365]
Hoffman, P. and J. Klensin, “chat tigo gratis paraguay”, BCP 166, RFC 6365, September 2011.
[RFC7235]
Fielding, R., Ed. and J. Reschke, Ed., “chat gratis gente chat paraguay”, RFC 7235, June 2014.

chat paraguayo gratis Informative References

[DIGEST]
Shekh-Yusef, R., Ed., Ahrens, D., and S. Bremer, “chat gratis mujeres paraguay”, Internet-Draft draft-ietf-httpauth-digest-10 (work in progress), January 2015.
[ISO-8859-1]
International Organization for Standardization, “Information technology -- 8-bit single-byte coded graphic character sets -- Part 1: Latin alphabet No. 1”, ISO/IEC 8859-1:1998, 1998.
[RFC2617]
Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S., Leach, P., Luotonen, A., and L. Stewart, “chat gratis movil sin java”, RFC 2617, June 1999.
[RFC2818]
chat gratis movil español, “chat gratis movil españa”, RFC 2818, May 2000.
[RFC2831]
Leach, P. and C. Newman, “chat gratis movil online”, RFC 2831, May 2000.
[RFC5246]
Dierks, T. and E. Rescorla, “chat gratis movil venezuela”, RFC 5246, August 2008.
[RFC6973]
Cooper, A., Tschofenig, H., Aboba, B., Peterson, J., Morris, J., Hansen, M., and R. Smith, “chat gratis movilnet”, RFC 6973, July 2013.
[RFC7231]
chat gratis movil wap and chat gratis movil sin registro, “chat gratis movil madrid”, RFC 7231, June 2014.

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chat gratis para moviles The scheme definition has been rewritten to be consistent with newer specifications such as [RFC7235].chat internacional gratis sin registro mas 50

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voice chat client free Finally, origin servers that need to support non-US-ASCII characters and can use the UTF-8 character encoding scheme can opt in as described above. In the worst case, they'll continue to see either broken credentials or no credentials at all (depending on how legacy clients handle characters they can not encode).chat gratis medellin antioquia

chat gratis medellin sin registro Why not simply switch the default encoding to UTF-8?

chat gratis com net There are sites in use today that default to a local character encoding scheme, such as ISO-8859-1 ([ISO-8859-1]), and expect user agents to use that encoding. Authentication on these sites will stop to work if the user agent switches to a different encoding, such as UTF-8.chat cristiano gratis medellin

chat.com gratis españa Note that sites might even inspect the User-Agent header field ([RFC7231], chat medellin gratis en español) to decide what character encoding scheme to expect from the client. Therefore they might support UTF-8 for some user agents, but default to something else for others. User agents in the latter group will have to continue to do what they do today until the majority of these servers have been upgraded to always use UTF-8.free flash chat script

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chat gratis.com en mexico Fixed Base64 reference to point to an actual definition of Base64.chat gratis zaragoza sin registro

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chat gratis chileno Julian F. Reschke
greenbytes GmbH
Hafenweg 16
Muenster, NW 48155
Germany
Email: chat kostenlos mobile
URI: chat free mobile assistance