| 摘要 |
According to a first aspect of the present invention there is provided a method of at least partly delegating processing of data in a machine-to-machine system to reduce computational load on a broker entity 11 while maintaining security of the data to be processed, the broker entity 11 serving as a link between a node 13 of a sensor network providing the data and an application node 12 requesting the data. In the method, at the broker entity 11, following receipt of a request for processed data from the application node 12, determining the node to provide the data to be processed, generating a data key for the data-providing node 13, generating a data-processing algorithm for processing the data in dependence upon the request, sending the data key to the data-providing node 13, and sending the data key and data-processing algorithm to a remote data-processing entity 15. At the data-providing node 13, encrypting the data using the data key and sending the encrypted data to the data-processing entity 15. At the data-processing entity 15, decrypting the data using the data key, processing the data using the data-processing algorithm, and sending the processed data to the application node 12.
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