Paper 2021/394 Original: eprint.iacr.org/2021/394 ↗
Quantum Encryption with Certified Deletion: Public Key and Attribute-Based
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.
Metadata
- Available format(s)
PDF- Category
- Foundations
- Publication info
- Preprint.
- History
- 2021-05-17: last updated
- 2021-03-27: published
- Short URL
- https://ia.cr/2021/394
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2021/394,
author = {Ryo Nishimaki and Takashi Yamakawa},
title = {Quantum Encryption with Certified Deletion: Public Key and Attribute-Based},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/394},
year = {2021},
url = {https://eprint.iacr.org/2021/394}
}