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Paper 2021/394

Quantum Encryption with Certified Deletion: Public Key and Attribute-Based

Ryo Nishimaki and Takashi Yamakawa

Abstract

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. Though they proved that their construction is information theoretically secure, a drawback is that the construction 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 only once. In this paper, we construct a (reusable-key) public key encryption (PKE) and attribute-based encryption (ABE) with certified deletion. Our PKE with certified deletion is constructed assuming the existence of IND-CPA secure PKE, and our ABE with certified deletion is constructed assuming the existence of indistinguishability obfuscation and one-way function.

Note: (May. 17 2021) This paper was subsumed by https://eprint.iacr.org/2021/617.

Metadata
Available format(s)
PDF
Category
Foundations
Publication info
Preprint. MINOR revision.
Keywords
certified deletionpublic key encryptionattribute-based encryption
Contact author(s)
ryo nishimaki zk @ hco ntt co jp,takashi yamakawa ga @ hco ntt co jp,ryo nishimaki @ gmail com
History
2021-05-17: revised
2021-03-27: received
See all versions
Short URL
https://ia.cr/2021/394
License
Creative Commons Attribution
CC BY
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