Institucio Catalana De Recerca I Estudis Avancats

Fundacio Institut De Ciencies Fotoniques

Universidade De Vigo

Universidad De Vigo

Marcos Curty Alonso

Valerio Pruneri

Marc Jofre Cruanyes

Lo Hoi-Kwong

Mitchel Morgan

Traditional key generation methods in a noisy network often assume trusted devices and are thus vulnerable to many attacks including covert channels. The present invention differs from previous key generation schemes in that it presents a mechanism which allows secure key generation with untrusted devices in a noisy network with a prescribed access structure.

Secure key agreement with untrusted parties

The invention is based on a process and system for producing random numbers by means of a quantum random number generator where the method comprises the steps of operating a laser in single mode and high modulation bandwidth by means of an electrical pulse driver, transforming the phase randomized optical pulses produced before in optical pulses with random amplitude and detecting the resulting random amplitude signals by means of a fast photodiode. The numbers thus produced are truly random.

Ultrafast quantum random number generation process and system therefore

Growing community of inventors

Pontevedra, Spain

Marcos Curty Alonso