The present invention relates to methods, processes, apparatus, algorithms, etc., for secure identification of secret answers that satisfy secret questions. The methods, etc., can be used for the negotiated exchange of information, goods, or services when the Seeker and the Provider conceal their negotiating...http://www.google.com/patents/US7685073?utm_source=gb-gplus-sharePatent US7685073 - Methods for negotiating agreement over concealed terms through a blind agent
