Opposing to spy behavior, it decides the converse modulo value

摘要

Converse modulo value b of the value a which designates n as law because of cryptography application, opposing to spy behavior, auxiliary value and auxiliary modulo , value a, law n and depending on one occulted parameter r at least at least in the manner in order to calculate with the feature conservation, to be decided, be decided, as converse modulo value of the auxiliary value which designates auxiliary converse modulo value 'ga auxiliary modulo as law converse modulo value b, auxiliary converse modulo value ', at least one occulted parameter r and auxiliary value and/or at least in auxiliary modulo dependenceDoing, it is decided. The computer program product and portable die data storage have the feature which corresponds. Invention for example seems like cryptography calculation on portable die data storage, it is suited for the application whose security is important, opposing to spy behavior, it was preserved, manner for converse modulo calculation is offered.