Vocalink Limited

Ipco 2012 Limited

Julian Robert Mark Barnes

Clifford Norman Russell

Erick Lopes Da Silva

An apparatus is described that comprises: communication circuitry configured to receive from a submitter, over a network, a data item being of a first data type and processing circuitry configured to: transform the first data type to a second, different, data type; remove non-significant content from the data item in the second data type; generate a hash of the data item having non-significant content removed to be signed; and provide the hash for signing.

Apparatus, computer program and method for use in transforming data types

An apparatus is described. The apparatus comprises: communication circuitry configured to receive from a submitter, over a network, a data item of a first data type, wherein the data item comprises a plurality of components and the apparatus further comprises: processing circuitry configured to: sequentially receive the plurality of components of the data item and for each component in succession in the sequence, the processing circuitry is configured to: remove non-significant content from the component of the data item; generate a data item of a second data type from the sequentially received plurality of components; generate a hash of the generated data item; and provide the hash for signing.

Apparatus, computer program and method

A method for verifying integrity of electronic messages, comprising the steps of: obtaining an input message digest for a source electronic message; adding the input message digest to an input accumulator that accumulates the input message digests over a predetermined period of time; obtaining an output message digest for a destination electronic message; adding the output message digest to an output accumulator that accumulates the output message digests over the predetermined period of time; comparing the value of the input accumulator with the value of the output accumulator at the expiration of the predetermined period of time; and verifying integrity in the source and destination electronic messages over the predetermined period of time when the value of the input accumulator is equivalent to the value of the output accumulator.

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Hertfordshire, United Kingdom

Julian Robert Mark Barnes