Dual-Server Public-Key Authenticated Encryption with Keyword Search

Project Code :TCMAPY1024

Objective

The objective is to address the vulnerability of traditional PEKS schemes to the inside keyword guessing attack (IKGA) in cloud storage. We introduce Dual-server Public-key Authenticated Encryption with Keyword Search (DPAEKS) that leverages two non-cooperative servers, offering both protection against IKGA and authentication, while ensuring efficiency and strong security.

Abstract

In cloud storage, efficiently and securely searching sensitive data is challenging. Searchable encryption ensures secure storage without compromising data confidentiality and usability. Public-key encryption with keyword search (PEKS) is widely studied but often vulnerable to inside keyword guessing attacks. Mitigating this has been historically inefficient. To address this, we propose Dual-server Public-key Authenticated Encryption with Keyword Search (DPAEKS), defending against inside keyword guessing by utilizing two non-cooperating servers with authentication. Our scheme, without bilinear pairings, is highly efficient and secure, demonstrated by real-world dataset experiments. This makes it suitable for practical applications, providing a robust solution to the challenges in cloud storage security.

Keywords—Cloud storage, public-key encryption with keyword search, dual-server, authorization, inside keyword guessing attacks.

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