Quantum Information Group, Quantum Key Server
Toshiba's Quantum Key Server delivers digital keys for cryptographic applications on fibre optic based computer networks. Based on quantum cryptography it provides a failsafe method of distributing verifiably secret digital keys, with significant cost and key management advantages.
The system provides world-leading performance. In particular, it allows key distribution over standard telecom fibre links exceeding 100km in length and bit rates sufficient to generate up to 100 256-bit keys per second.
Toshiba's system uses a simple architecture, in which the photons travel from sender to receiver. This is the only design that has been rigorously proven as secure from all types of eavesdropping attack. This ensures that the Toshiba design will be secure not only today, but also in the future.
Toshiba has pioneered active stabilisation technology that allows the system to distribute key material continuously, in even the most challenging operating conditions, without any user intervention. This avoids the need for recalibration of the system due to temperature-induced changes in the fibre lengths. Initiation of the system is also managed automatically, allowing simple turn-key operation.
The system can be used for a wide range of cryptographic applications, eg encryption or authentication of sensitive documents, messages or transactions. A programming interface gives the user access to the key material.
Toshiba are seeking potential users and partners wishing to develop this technology. We welcome enquiries from interested companies or organisations.
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