HTTP Authentication: Dialback Access Authentication

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Last updated 2013-03-11 (latest revision 2012-09-06)
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This specification defines the Dialback Access Authentication Scheme. It provides a way for HTTP clients to identify an Internet host or account responsible for an HTTP request, and for HTTP servers to verify that identity by sending a token to a declared dialback endpoint. The specification defines a new HTTP authentication scheme, "Dialback". It also defines a new link relation, "dialback", to specify the endpoint for the dialback verification. Finally, it defines the interface for the dialback endpoint.


Evan Prodromou (

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