Patent ID: 7480935

Claim:
A computerized method for protecting an identifier of a subscriber, during data transfer between a service provider and a content provider, when said subscriber sends a request to said service provider to obtain data belonging to said content provider, said computerized method comprising: executing on at least one computer the steps including: upon reception of said subscriber request by said service provider for each new subscriber session: dynamically generating for each new session an encrypted token using said identifier of said subscriber, wherein a lifetime of the encrypted token is a user session lifetime, the generating using one of a symmetric and asymmetric encryption algorithm comprising: determining a separator (S); determining a time varying value (T); concatenating the subscriber identifier with T in a string such that the subscriber identifier and T are separated with S; encrypting the string with one of a symmetric and asymmetric encryption algorithm; and, transmitting said subscriber request and said encrypted token to said content provider; upon reception by said service provider of a Simple Object Access Protocol (SOAP) certification request comprising an encrypted token, sent by said content provider: extracting said encrypted token from said SOAP certification request, wherein the encrypted token is in one of the SOAP body and a predefined SOAP header; decrypting said extracted encrypted token using a decryption algorithm corresponding to the encryption algorithm; retrieving the subscriber identifier using the separator; checking said determined subscriber identifier; and, transmitting a success or failure indication to said content provider in a SOAP response to said certification request; upon reception of said data belonging to said content provider by said service provider, transmitting said data belonging to said content provider to said subscriber; memorizing said encrypted token so that it can be reused during the user session lifetime without having to be recomputed; and formatting said data belonging to said content provider in a format suitable and usable by the subscriber.