# Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication

@article{Hiroka2021QuantumEW, title={Quantum Encryption with Certified Deletion, Revisited: Public Key, Attribute-Based, and Classical Communication}, author={Taiga Hiroka and Tomoyuki Morimae and Ryo Nishimaki and Takashi Yamakawa}, journal={IACR Cryptol. ePrint Arch.}, year={2021}, volume={2021}, pages={617} }

Broadbent and Islam (TCC ’20) proposed a quantum cryptographic primitive called quantum encryption with certified deletion. In this primitive, a receiver in possession of a quantum ciphertext can generate a classical certificate that the encrypted message is deleted. Although their construction is information-theoretically secure, it is limited to the setting of one-time symmetric key encryption (SKE), where a sender and receiver have to share a common key in advance and the key can be used…

## 7 Citations

Certified Everlasting Functional Encryption

- Computer Science, Mathematics
- 2022

For the construction of certified everlasting FE, this paper introduces and construct certified everlasting versions of secret- key encryption, public-key encryption, receiver non-committing encryption, and a garbling scheme, which are of independent interest.

Quantum Proofs of Deletion for Learning with Errors

- Computer Science, MathematicsIACR Cryptol. ePrint Arch.
- 2022

This work augments the proof-of-deletion paradigm with fully homomorphic encryption (FHE) and introduces an encoding based on Gaussian coset states which is highly generic and suggests that essentially any LWE-based cryptographic primitive admits a classically-verifiable quantum proof of deletion.

Cryptography with Certified Deletion

- Computer Science, MathematicsArXiv
- 2022

A new, unifying framework that yields an array of cryptographic primitives that enable a party in possession of a quantum ciphertext to generate a classical certiﬁcate that the encrypted plaintext has been information-theoretically deleted, and cannot be recovered even given unbounded computational resources is proposed.

Unclonable Encryption, Revisited

- Computer Science, MathematicsTCC
- 2021

It is shown that unClonable encryption, satisfying a stronger property, called unclonable-indistinguishability (defined by Broadbent and Lord), implies copy-protection for a simple class of unlearnable functions.

Uncloneable Encryption, Revisited

- Computer Science, MathematicsIACR Cryptol. ePrint Arch.
- 2021

This work studies uncloneable encryption schemes, where the encryption key can be reused to encrypt multiple messages, and presents two constructions from minimal cryptographic assumptions: a private-key un cloneable encryption scheme assuming post-quantum oneway functions and a public-key Uncloneable Encryption Scheme assuming a post-Quantum public- key encryption scheme.

Certified Everlasting Zero-Knowledge Proof for QMA

- Computer Science, MathematicsIACR Cryptol. ePrint Arch.
- 2021

This work introduces a novel compromise, which is a computational zero-knowledge proof for QMA, but the verifier issues a classical certificate that shows that the verifiers has deleted its quantum information.

Depth-efficient proofs of quantumness

- Computer Science
- 2021

All existing proofs of quantumness can be modified so that the prover need only perform constant-depth quantum circuits (and measurements) together with logdepth classical computation, and thus obtain depth-efficient proofs ofquantumness whose soundness cannot be based on the same assumptions as existing schemes.

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