Method for authenticate a user associated to a user agent implemented over SIP protocol

摘要

Present invention refers to a method for authenticating a user associated to a user agent/client implemented over SIP protocol, using OAuth tokens obtained from a OAuth security token service (STS) in which the user is recognized. The method is characterized by including a OAuth token in a SIP REGISTER message; sending the SIP REGISTER message to a SIP proxy; extracting the OAuth token from the SIP REGISTER message; sending a OAuth request including the OAuth token to an OAuth server of the STS to be validated; answering a HTTP response code to the SIP proxy with an extended OAuth information including an identification of the user; the SIP proxy verifying the identification received; and finally registering the user if the verifying and the HTTP response code received from STS is successful.