Application of Partial Homomorphic Encryption for Enhance Security using Dynamic Key Management: Review and Proposed Solution

Abstract: Today’s interconnected world has transformed the operational way of individuals, organizations, and governments by rapid digitization. Starting from online banking and e-commerce to cloud computing and smart devices, digital platforms have become an integral part of daily life. While this transformation offers incredible convenience, efficiency, and accessibility, a wide range of security challenges has also been initiated. There is a high requirement of effective security measures. This study proposed a novel approach to enhance data security using a combination of dynamic key management (DKM) and partial homomorphic encryption (PHE). Achieving optimal security, efficiency, and flexibility in traditional encryption methods is a critical issue. The proposed method supports secure and efficient key updates without decrypting current data, making use of an additive PHE scheme in addition to a dynamic key distribution protocol. Forward and backward secrecy is provided in applications where users join and leave most of the time, e.g., cloud storage and Internet of Things (IoT). More secure environments may be created with the need for operational continuity, such as those of cloud computing and IoT applications. Leak of sensitive data may be avoided along with safeguarding the information against many new, dynamically emerging threats of digital ecosystems. Keywords — Security, DKM, PHE, IoT, Encryption, Decryption, ECC.