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1. (WO2018078314) FEDERATING DATA INSIDE OF A TRUSTED EXECUTION ENVIRONMENT

Pub. No.:    WO/2018/078314    International Application No.:    PCT/GB2017/052872
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Sep 27 01:59:59 CEST 2017
IPC: G06F 21/74
G06F 21/85
Applicants: ARM IP LIMITED
Inventors: RANJAN, Karthik
RAMAMURTHI, Shiv
Title: FEDERATING DATA INSIDE OF A TRUSTED EXECUTION ENVIRONMENT
Abstract:
There is described a method and data processing gateway comprising: data processing circuitry for performing data processing operations in response to program code; a first execution environment (FEE) and a second execution environment (SEE) for storing data and program code, wherein data and program code stored in the FEE when accessible to the data processing circuitry configured to operate in the FEE is inaccessible to the data processing circuitry when configured to operate in the SEE, the FEE comprising: a data ingestion store for receiving a device decryption mechanism into the FEE to decrypt encrypted device data, the data ingestion store further for receiving encrypted device data into the FEE and for decrypting the encrypted device data using the device decryption mechanism; and a subscriber client manager for receiving a first subscriber encryption mechanism in to the FEE, and further for encrypting device data using the first subscriber encryption mechanism and further for transmitting encrypted device to a first subscriber externally of the data processing gateway whereby the device data is secure outside of the FEE.