Abstract: The present invention is a circuit for performing a computation of a plurality of coefficients of an error locator polynomial and a plurality of coefficients of an error evaluator polynomial in a system for correcting errors in a Reed-Solomon encoded datastream, comprising a syndrome generator outputting syndromes of the datastream. The circuit of the present invention is coupled to the syndrome generator and receives the syndromes.

Abstract: A method and system for communications between a client system and a server communicatively coupled to the client system. User information about a user is stored on the client system. The user information comprises a plurality of attributes. Each attribute comprises information relating to the user and a willingness level indicator, indicating a level of willingness of the user to reveal the information of that attribute. A user information request is received from the server. The user information request comprises a plurality of attribute requests. Each attribute request comprises an indication of whether the attribute is required in order for the server to transmit information stored on the server to the client system. At the client system, the received attribute requests are compared with the stored attributes to determine whether each requested attribute is present on the client system.