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Fine-Grained Proxy Re-Encryption: Definitions & Constructions from LWE
Sept. 8, 2023, 11 a.m. |
IACR News www.iacr.org
ePrint Report: Fine-Grained Proxy Re-Encryption: Definitions & Constructions from LWE
Yunxiao Zhou, Shengli Liu, Shuai Han, Haibin Zhang
Proxy re-encryption (PRE) allows a proxy with a re-encryption key to translate a ciphertext intended for Alice (delegator) to another ciphertext intended for Bob (delegatee) without revealing the underlying message. However, with PRE, Bob can obtain the whole message from the re-encrypted ciphertext, and Alice cannot take flexible control of the extent of the message transmitted to Bob.
In this paper, we …
alice amp ciphertext definitions encryption eprint report key message proxy report translate
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