Topic
Proxy re-encryption
About: Proxy re-encryption is a research topic. Over the lifetime, 708 publications have been published within this topic receiving 33624 citations.
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TL;DR: This paper proposes PRECISE, an identity-based private data sharing scheme in OSNs with big data, in which the data owner could broadcast private data to a group of users at one time in a convenient and secure way.
28 citations
TL;DR: This paper presents a new and efficient construction of ICPRE-FG scheme with CCA-security under the well-studied assumption in the random oracle model.
28 citations
TL;DR: Through performance evaluation, the effectiveness of ESSPR is demonstrated in terms of delivery ratio, average delay, average fairness, and detection ratio under malicious peers proportions in VP2PSN.
Abstract: In this paper, we propose an Efficient Secure routing Scheme based on searchable encryption with vehicle Proxy Re-encryption, called ESSPR, for achieving privacy preservation of message in vehicular peer-to-peer social network (VP2PSN). Specifically, the proposed ESSPR scheme consists of six phases: system initializations phase, peer registration phase, document generation phase, document forwarding phase, vehicle proxy re-encryption phase, and document receiving phase. Based on rationale of QoS-based clustering strategy, public key encryption with keyword search, identity based aggregate signature, and proxy re-encryption, ESSPR provides privacy for keyword, privacy for resources, and authentication and data integrity of the demand’s source. In addition, ESSPR is robust against eavesdropping attack, wormhole attack, packet analysis attack, packet tracing attack, and replay attack. Through performance evaluation, we demonstrate the effectiveness of ESSPR in terms of delivery ratio, average delay, average fairness, and detection ratio under malicious peers proportions in VP2PSN.
28 citations
Patent•
01 Jun 2017
TL;DR: In this article, a proxy re-encryption (PRE) scheme is proposed, in which a first user is assigned first encryption and decryption keys, and a second user receives second encryption keys.
Abstract: A device, system and method for fast and secure Proxy Re-Encryption (PRE) using key switching. A first user is assigned first encryption and decryption keys and a second user is assigned second encryption and decryption keys. First encrypted data encrypted with the first encryption key may be re-encrypted using a proxy re-encryption key to simultaneously switch encryption keys by adding the second encryption key and cancelling the first encryption key by the first decryption key to transform the first encrypted data encrypted by the first encryption key to second encrypted data encrypted by the second encryption key, without decrypting the underlying data. The second user may be the sole system device that possesses the (e.g., private) second decryption key to decrypt the second encrypted data.
27 citations
TL;DR: A ciphertext-policy attribute-based encryption scheme delegating attribute revocation processes to Cloud Server by proxy re-encryption that supports any Linear Secret Sharing Schemes (LSSS) access structure and is secure against attack by unauthorized users and Cloud Server.
Abstract: Ciphertext-Policy Attribute-Based Encryption (CP-ABE) is suitable for data access control on a cloud storage system. In CP-ABE, the data owner encrypts data under the access structure over attributes and a set of attributes assigned to users is embedded in user’s secret key. A user is able to decrypt if his attributes satisfy the ciphertext’s access structure. In CP-ABE, processes of user’s attribute revocation and grant are concentrated on the authority and the data owner. In this paper, we propose a ciphertext-policy attribute-based encryption scheme delegating attribute revocation processes to Cloud Server by proxy re-encryption. The proposed scheme does not require generations of new secret key when granting attributes to a user and supports any Linear Secret Sharing Schemes (LSSS) access structure. We prove that the proposed scheme is secure against attack by unauthorized users and Cloud Server.
27 citations