Year: 2023
Type: conference-paper
Abstract: Proxy re-encryption is an encryption scheme used to authorize the decryption authority. For the proxy re-encryption algorithm using a single proxy node, there are security problems of collusion attack and single point failure of the proxy. This paper proposes a conditional proxy pool re-encryption scheme, which uses the security model definition of the encryption scheme of the security identity, and designs a unidirectional, single-hop conditional proxy pool re-encryption scheme using the randomly selected proxy method. Using multiple proxy nodes to form a group of proxies (proxy pool) that do not trust each other, a collusion attack becomes difficult. By pooling proxy nodes to construct a proxy pool, plus a strong signature function, random filling, and one-way, collision-resistant hash function, the threat of proxies being attacked by collusion attack is reduced. Theoretically, the scheme satisfies the security of selected ciphertext attacks under the standard model and the security under the application scenario. Compared with other proxy re-encryption schemes, this scheme solves the problem of proxy single-point failure, improves the operation time and efficiency, greatly reduces the computational cost, and only increases the proxy selection time. It can be combined with distributed systems to solve the problem of multi-node deployment.
Institution: Guangxi Minzu University
Language: English
Subfield: Computer Networks and Communications
Field: Computer Science
Domain: Physical Sciences
Open Access status: bronze
Awards: G2214687703, 智能算法的差分隐私保护技术及应用研究
OpenAlex ID: W4385059244