Simple quantum password checking
classification
🪐 quant-ph
keywords
quantumcheckingencodedpasswordpasswordsprotocolallowattacks
read the original 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.
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