Original Article

Foundations of Physics Letters

, Volume 19, Issue 3, pp 293-296

First online:

A Three-Stage Quantum Cryptography Protocol

  • Subhash KakAffiliated withDepartment of Electrical & Computer Engineering, Louisiana State University Email author 

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We present a three-stage quantum cryptographic protocol based on public key cryptography in which each party uses its own secret key. Unlike the BB84 protocol, where the qubits are transmitted in only one direction and classical information exchanged thereafter, the communication in the proposed protocol remains quantum in each stage. A related system of key distribution is also described.

Key words:

quantum information science quantum cryptography secure communication protocol