ML-CLSCKS: Module lattice based certificateless signcryption with keyword search in cloud storage
Year: 2026
Type: article
Abstract: Public Key Authenticated Encryption with Keyword Search (PAEKS) allows keyword searches over encrypted data in the cloud without revealing actual data and the receiver can verify the sender’s authenticity or detect tampering. However, the existing PAEKS schemes are based on classical hard problems that are vulnerable to quantum attacks. To overcome these issues, lattice-based PAEKS schemes have been proposed, which provide post quantum security but incur high computational overhead and suffer from inherent issues such as the Certificate Management Problem (CMP) or Key Escrow Problem (KEP). To address the above problems, in this paper, we introduce a Module Lattice-based Certificateless Signcryption with Keyword Search (ML-CLSCKS), which relies on Module Learning with Errors (MLWE) and Module Short Integer Solution (MSIS). The security analysis proves that ML-CLSCKS achieves both confidentiality and unforgeability against Type I and Type II adversaries in the Random Oracle Model (ROM). The performance analysis shows that ML-CLSCKS outperforms than existing lattice-based PAEKS schemes and makes the practical quantum-resistant scheme suitable for searchable encryption in cloud environments.
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,130
OpenAlex ID: W7127930149