Smart dongle

摘要

The method controls access to and use of a program stored in a computer which has at least one locked part. A device associated with a licensee is provided for connection to the computer. This device is adapted to unlock the locked part of the program. At least one licence message relating to the program, and at least one digital key for unlocking the locked part of the program are transmitted from the licensor to the device where they are stored in memory. When the program is started the stored message and key are tested to determine whether the locked part is to be unlocked. If so, the locked part of the program is unlocked with the digital key. Independent claims also cover an apparatus for carrying out the method.