2005/10/03 by Barbosa, Geraldo A.
#FOS: Physical sciences #Quantum Physics (quant-ph)
paper · doi:10.48550/arxiv.quant-ph/0510011
This work shows how a secure Internet can be implemented through a fast key distribution system that uses physical noise to protect the transmitted information. Starting from a shared random sequence K0 between two (or more) users, longsequences R of random bits can be shared. The signals sent over the Internet are deterministic but have a built-in Nature-made uncertainty that protects the shared sequences. After privacy amplification the shared R random bits --encrypted by noise-- are subsequently utilized in one-time-pad data ciphering.