Device and method of administration of license management license

摘要

Abstract the license administration device manages grant or denial of each optional function in the plurality of Licensee devices. The licensee device stores key information encrypted with the cipher key so as to issue the license change request activating or restricting the predetermined optional function.Upon receiving the license change request restricting the predetermined optional function, the license administration device overwrites the key information of the licensee device with the default key.Subsequently, upon receiving the license change request activating the predetermined optional function, the license administration device applies an upgrade key to the key information of the licensee device. The default key or the upgrade key can be decrypted using the cipher key unique to the licensee device.The license administration device manages the licensed maximum for the predetermined optional function and reflects an increment or decrement to the licensing maximum by applying the default key or the upgrade key. Translation of the summary summary: "invention patent license administration device and method of administration of license".Device for administration of license that manages the granting or denial of each optional function in a plurality of devices of the Licensee. The device of licensed stores information encrypted key with a decryption key so as to issue a request for change of license that activates or restricts the optional function set.With the receipt of a request for change of license that restricts the optional function set, the dosing device to permit overrides the key information of a device with a key pattern.Subsequently, on receipt of a request for change of license which activates predetermined optional function, the device license administration applies a key to update the information of key device of the Licensee. The key pattern or the key updating can be unencrypted using an encryption key unique to the device of the Licensee.The dosing device to permit manages the maximum degree to the optional function and reflects a predetermined increment or decrement to the maximum of licensing with the application of the standard key or the key updating.