• Corpus ID: 227162351

Composably secure device-independent encryption with certified deletion.

@article{Kundu2020ComposablySD,
  title={Composably secure device-independent encryption with certified deletion.},
  author={Srijita Kundu and Ernest Y.-Z. Tan},
  journal={arXiv: Quantum Physics},
  year={2020}
}
  • Srijita Kundu, E. Tan
  • Published 25 November 2020
  • Computer Science, Mathematics
  • arXiv: Quantum Physics
We study the task of encryption with certified deletion (ECD) introduced by Broadbent and Islam (2019), but in a device-independent setting: we show that it is possible to achieve this task even when the honest parties do not trust their quantum devices. Moreover, we define security for the ECD task in a composable manner and show that our ECD protocol satisfies conditions that lead to composable security. Our protocol is based on device-independent quantum key distribution (DIQKD), and in… 
5 Citations

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References

SHOWING 1-10 OF 31 REFERENCES

Quantum encryption with certified deletion

TLDR
It is shown that it is possible to encrypt classical data into a quantum ciphertext such that the recipient of the ciphertext can produce a classical string which proves to the originator that the recipients has relinquished any chance of recovering the plaintext should the decryption key be revealed.

Device-independent bit commitment based on the CHSH inequality

TLDR
This work presents a device-independent bit commitment protocol based on CHSH testing, which achieves the same security as the optimal GHZ-based protocol, albeit at the price of fixing the time at which Alice reveals her commitment.

The Universal Composable Security of Quantum Key Distribution

TLDR
A universal composability theorem for the quantum setting is derived that shows that keys generated by repeated runs of QKD degrade slowly and can indeed be safely used, a property ofQKD that is hitherto unproven.

Composable security in relativistic quantum cryptography

TLDR
A framework for performing such a modular security analysis of classical and quantum cryptographic schemes in Minkowski space is introduced and implies in particular the non-composability of existing relativistic bit commitment and coin flipping protocols.

Device-independent quantum key distribution secure against collective attacks

TLDR
This proof exploits the full structure of quantum theory, but only holds against collective attacks, where the eavesdropper is assumed to act on the quantum systems of the honest parties independently and identically in each round of the protocol.

Parallel Device-Independent Quantum Key Distribution

TLDR
This work proves the security of a protocol where all games are executed in parallel, the first parallel security proof for a fully device-independent QKD protocol that tolerates a constant level of device imprecision and achieves a linear key rate.

Fully distrustful quantum bit commitment and coin flipping.

TLDR
It is shown that for bit commitment, one of the most basic primitives within the model-the answer is positive, and the aim of the device-independent approach to cryptography is to do away with the latter assumption, and significantly increase security.

Revocable Quantum Timed-Release Encryption

TLDR
It is shown that revocable timed-release encryption without trusted parties is possible using quantum cryptography (while trivially impossible classically) and two proof techniques in the quantum random oracle model are developed.

Practical device-independent quantum cryptography via entropy accumulation

TLDR
A property of entropy, termed “entropy accumulation”, is presented, which asserts that the total amount of entropy of a large system is the sum of its parts, which is used to prove the security of cryptographic protocols, including device-independent quantum key distribution, while achieving essentially optimal parameters.

A largely self-contained and complete security proof for quantum key distribution

In this work we present a security analysis for quantum key distribution, establishing a rigorous tradeoff between various protocol and security parameters for a class of entanglement-based and