| CPC H04L 9/0819 (2013.01) | 7 Claims |

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1. A management system comprising:
a management device;
a device being incapable of directly communicating with the management device;
a storage device configured to communicate with the management device and the device; and
a server configured to communicate with the management device and the device,
wherein the management device is configured to, in a case where the management device receives data identification information for identifying execution data from the server, upload the data identification information to the storage device, the execution data being used in a device execution process executed by the device, and
wherein the device is configured to execute:
a transmission process of, in a case where the device receives the data identification information from the storage device, transmitting the data identification information and an encryption key having an expiration date to the server;
a decryption process of, in a case where the device receives the execution data encrypted with the encryption key from the server, decrypting the received execution data with the encryption key; and
a data usage process of executing the device execution process by using the execution data decrypted in the decryption process.
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