SCALABLE AND SECURE MESSAGE BROKERING APPROACH IN A COMMUNICATION SYSTEM

摘要

A method includes a first computing entity receiving a request for first data from an affiliated source device by a user device. When a re-encryption key of the user device is not based on a key pair of the first computing entity the method further includes decrypting the first encrypted data using a private key of the first computing entity and encrypting the recovered first data with a public key of a second computing entity to produce second encrypted data. The method further includes encrypting the second encrypted data with the re-encryption key of the user device to produce double encrypted data. The method further includes sending the double encrypted data to the user device, where the user device is capable of decrypting the double encrypted data to recover the first data using a private key of the user device based on a key pair of the second computing entity.