Paper 2019/875 Original: eprint.iacr.org/2019/875 ↗
Quantum Alice and Silent Bob: Qubit-based Quantum Key Recycling with almost no classical communication
Abstract
We introduce a Quantum Key Recycling (QKR) protocol that needs no classical communication from Alice to Bob. Alice sends only a cipherstate, which consists of qubits that are individually measured by Bob. Bob merely has to respond with an authenticated one-bit accept/reject classical message. Compared to Quantum Key Distribution (QKD), QKR has reduced round complexity. Compared to other qubit-wise QKR protocols, our scheme has far less classical communication. We provide a security proof in the universal composability framework and find that the communication rate is asymptotically the same as for QKD with one-way postprocessing.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2019-09-25: last updated
- 2019-08-01: published
- Short URL
- https://ia.cr/2019/875
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2019/875,
author = {Daan Leermakers and Boris Skoric},
title = {Quantum Alice and Silent Bob: Qubit-based Quantum Key Recycling with almost no classical communication},
howpublished = {Cryptology {ePrint} Archive, Paper 2019/875},
year = {2019},
url = {https://eprint.iacr.org/2019/875}
}