British Telecommunications Public Limited Company

Fabio Giubilo

Fadi El-Moussa

Mark A Shackleton

Mark Shackleton

Systems and methods of protecting data in a message for communication from a sender to a receiver, the sender and receiver sharing a secret including splitting the message into a number of ordered message blocks, the order being a proper order such that an aggregation of the blocks in the proper order constitutes the message; generating an encoded indication of a position of the block in the proper order of blocks, the encoding being reversible and based on at least a hash value for the block, a secret shared between the sender and the receiver, and a position of the block in the proper order; communicating the blocks and the encoded indications to the receiver, the blocks being communicated in an order different to the proper order so as to obfuscate the message, such that the blocks can be reassembled by the receiver in the proper order on the basis of the shared secret.

Variable data protection

A computer implemented method of protecting data in a message for communication from a sender to a receiver, the sender and receiver sharing a secret, the method including splitting the message into a plurality of ordered message blocks, the order being a proper order such that an aggregation of the blocks in the proper order constitutes the message; generating a hash value for each message block, each hash value being generated on the basis of at least a content of the block and the secret; generating, for each block, an encoded indication of a position of the block in the proper order of blocks, the encoding being reversible and based on at least the hash value for the block and a position of the block in the proper order; communicating the blocks to the receiver in an order different to the proper order so as to obfuscate the message; and communicating the encoded indications to the receiver such that the blocks can be reassembled by the receiver in the proper order on the basis of the shared secret.

Impeding data access

A computer implemented method of sharing a data message containing multiple data fields between a provider computer system and a consumer computer system, wherein the provider and consumer computer systems have mutual mistrust, is disclosed.

Growing community of inventors

London, United Kingdom

Fabio Giubilo