Random bit sequence generation from speckle patterns produced with multimode waveguides


With the rapid development of digital ecosystems, such as mobile applications towards goods/monetary transactions, a new paradigm of data transfer arises, which requires fast and reliable algorithms to generate random numbers. The statistical nature of speckle-based imaging creates an opportunity for these generators to arise as random number generators given the unpredictability and irreproducibility of such patterns. Hence, it is shown that the establishment of an experimental system is able to produce unique speckle patterns for remote cryptographic key storage and distribution, with a potential key rate generation of Gbs.



subject category

Engineering; Optics; Telecommunications


Dias, LMS; Silverio, TFS; Ferreira, RAS; Andre, PSB

our authors


Fundacao para a Ciencia e a Tecnologia, Grant/Award Numbers: CENTRO-01-0145-FEDER-030186, UIDB/50008/2020-UIDP/50008/2020, UIDB/50011/2020&UIDP/50011/2020

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