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1. (WO2017167549) UNTRUSTED CODE DISTRIBUTION

Pub. No.:    WO/2017/167549    International Application No.:    PCT/EP2017/055094
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Sat Mar 04 00:59:59 CET 2017
IPC: H04L 29/06
H04L 29/08
H04L 9/32
H04W 4/00
Applicants: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
Inventors: DANIEL, Joshua
DUCATEL, Gery
ZOUALFAGHARI, Mohammad
Title: UNTRUSTED CODE DISTRIBUTION
Abstract:
A computer implemented method for code distribution by a base station to a target device via a network, the distribution being made via one or more distribution servers arranged between the base station and the target device on the network, the method comprising: the base station maintaining a blockchain data structure storing one or more blocks and having a state determined by a most recently committed block in the blockchain; the base station generating a new transaction for storage in the blockchain corresponding to code for distribution by the base station to a defined list of network connected devices including the target device, the new transaction including a hash value for the code and the list of network connected devices, wherein the new transaction is stored and committed as a new block in the blockchain such that the blockchain has a new current state, the new block having associated a hash value based on the contents of the new transaction and a hash value evaluated for a block corresponding to a preceding state in the blockchain; sending the code, the defined list of devices and the hash value for the code and the defined list of devices to the target device via the one or more distribution servers; and broadcasting the current state of the blockchain for receipt by target device such that the target device is able to verify the code and the suitability of the code for the target device.