Visa Europe Limited

Andrew Warren Rounds

Boris Taratine

Matthew Johnson

Simon Peter Rust

A system for verifying a request for access to data is provided, the system comprising a first moduleand a second module. The first moduleis arranged to generate a password, and the second moduleis arranged to receive a password associated with a request for data, validate the received password, and enable access to the requested data. The system is such that the first and second modulesshare a secret that has been uniquely assigned thereto, the shared secret being for use in generation and validation of a said password. Furthermore, the first moduleis communicatively disconnected from the second module

Method and system for verifying an access request

Systems and methods for use in verifying a request for access to data in a system comprising a first module having access to a first trusted indicator of time, a second module having access to an untrusted indicator of time and a computing device having access to a second trusted indicator of time. The first module generates a password using at least the first trusted indicator of time. The second module receives a password associated with the request for access to data and validates the received password using at least the untrusted indicator of time. The second module then causes a message to be transmitted to the computing device, the message comprising data indicative at least of the untrusted indicator of time used to validate the received password. The computing device then generates data indicative of a comparison between the untrusted indicator of time and the second trusted indicator of time, and uses the generated data to provide said access to data.

A system for verifying a request for access to data is provided, the system comprising a first module and a second module. The first module is arranged to generate a password, and the second module is arranged to receive a password associated with a request for data (received at step), validate the received password, and enable access to the requested data. The system is such that the first and second modules share a secret that has been uniquely assigned thereto, the shared secret being for use in generation and validation of a said password. Furthermore, the first module is communicatively disconnected from the second module.

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Gloucestershire, United Kingdom

Andrew Warren Rounds