The direction of updatable encryption does matter

R Nishimaki - IACR International Conference on Public-Key …, 2022 - Springer
We introduce a new definition for key updates, called backward-leak uni-directional key
updates, in updatable encryption (UE). This notion is a variant of uni-directional key updates …

Public trace-and-revoke proxy re-encryption for secure data sharing in clouds

F Luo, H Wang, W Susilo, X Yan… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Proxy re-encryption (PRE), as a promising cryptographic primitive for secure data sharing in
clouds, has been widely studied for decades. PRE allows the proxies to use the re …

Generalized autonomous path proxy re-encryption scheme to support branch functionality

Z Lin, J Zhou, Z Cao, X Dong… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Proxy Re-Encryption (PRE), a special cryptographic primitive, can efficiently perform
ciphertext conversion on the cloud. To enable the data owner (ie delegator) to authorize a …

Accountable proxy re-encryption for secure data sharing

H Guo, Z Zhang, J Xu, N An… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Proxy re-encryption (PRE) provides a promising solution for encrypted data sharing in public
cloud. When data owner Alice is going to share her encrypted data with data consumer Bob …

[PDF][PDF] Research Online

VNT Le, B Apopei, K Alameh - Sciences, 2018 - academia.edu
Abstract© The Institution of Engineering and Technology 2019. The modulus switching
technique has been used in some cryptographic applications as well as in cryptanalysis. For …

What about bob? The inadequacy of CPA security for proxy reencryption

A Cohen - IACR International Workshop on Public Key …, 2019 - Springer
In the simplest setting of proxy reencryption, there are three parties: Alice, Bob, and Polly
(the proxy). Alice keeps some encrypted data that she can decrypt with a secret key known …

Revisiting proxy re-encryption: forward secrecy, improved security, and applications

D Derler, S Krenn, T Lorünser, S Ramacher… - … workshop on public key …, 2018 - Springer
We revisit the notion of proxy re-encryption (PRE PRE), an enhanced public-key encryption
primitive envisioned by Blaze et al.(E urocrypt'98) and formalized by Ateniese et …

Fine-grained proxy re-encryption: Definitions and constructions from LWE

Y Zhou, S Liu, S Han, H Zhang - … Conference on the Theory and Application …, 2023 - Springer
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 …

Collusion-resistant identity-based proxy re-encryption: lattice-based constructions in standard model

P Dutta, W Susilo, DH Duong, PS Roy - Theoretical Computer Science, 2021 - Elsevier
The concept of proxy re-encryption (PRE) dates back to the work of Blaze, Bleumer, and
Strauss in 1998. PRE offers delegation of decryption rights, ie, it securely enables the re …

Chosen-ciphertext secure homomorphic proxy re-encryption

F Luo, S Al-Kuwari, W Susilo… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Homomorphic Proxy Re-Encryption (HPRE) is an extension of Proxy Re-Encryption (PRE)
which combines the advantages of both Homomorphic Encryption (HE) and PRE. A HPRE …