Method and system for transferring information to a device

摘要

Methods and systems for transferring information to a device include assigning a unique identifier to a device and generating a unique key for the device. The device is located at a first site, and the unique identifier is sent from the device to a second site. The unique key is obtained at the second site, and it is used for encrypting information at the second site. The encrypted information is sent from the second site to the device, where it can then be decrypted.

主权项

1. A method for controlling a device, comprising:
locating a device at a production site:
assigning a unique identifier to the device and storing the unique identifier in the device at the production site;generating a unique key for the device and storing the unique key in the device at the production site;locating the device at a first site, wherein the first site is not the production site and is an untrusted site;sending the unique identifier from the device to a second site, wherein the second site is not the production site and is a trusted site;obtaining the unique key at the second site;sending a master key from the production site to the second site, and wherein obtaining the unique key includes reconstructing the unique key using the unique identifier and the master key at the second site;encrypting information using the unique key at the second site; andsending the encrypted information from the second site to the device.