Simple quantum password checking

Abstract

We present a quantum password checking protocol where secrecy is protected by the laws of quantum mechanics. The passwords are encoded in quantum systems that can be compared but have a dimension too small to allow reading the encoded bits. We study the protocol under different replay attacks and show it is robust even for poorly chosen passwords.

5 pages. Comments welcome

References in corpus (4)

• The SWAP test and the Hong-Ou-Mandel effect are equivalent
• Applications of single-qubit rotations in quantum public-key cryptography
• Deterministic quantum-public-key encryption: forward search attack and randomization
• Experimental demonstration of a time-domain multidimensional quantum channel

Cited by in corpus (1)

• Quantum Locker Using a Novel Verification Algorithm and Its Experimental Realization in IBM Quantum Computer