Host instrument, package to be inserted into same, external storage medium to be used therefor, and method for authenticating package to be inserted into host instrument

摘要

A method for authenticating a package to be insertable into and removed from a host instrument wherein an external storage medium for storing key information inherent to the package is inserted into the package or the host instrument, the key information is collated with key verification information which is stored in the package or the host instrument, and transmission of information is permitted only when the external storage medium is allowable.