Design and Implementation of an enhanced Cryptography model using the combination of Blowfish and RSA for the Security of Computer-based Integrated School Information Management System

¹Chinenye P. Ikeagwu; ²Virginia E. Ejiofor; ³Orji Everistus Eze and ⁴Godspower Akawuku

^1,2,4Department of Computer Science, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria

³Department of Computer Science Federal Polytechnic Ohodo, Enugu, State, Nigeria

ABSTRACT

Data transmission threats have become a critical concern for organizations and individuals globally. Information’s most valuable assets, alongside human resources, and the compromise of organizational data can lead to significant damage or even destruction. Consequently, organizations invest substantial resources to ensure the security of their data. The primary focus of the research is the development of a secure cryptographic model for a computer-based integrated school information management system (SIMS). The study addresses the critical need for secure data transmission between users and employs advanced cryptographic techniques to protect against intruders. To achieve this, the research integrates two cryptographic algorithms: RSA, an asymmetric encryption model, and Blowfish, a 64-bit symmetric system encryption model. This hybrid cryptographic framework referred to as Paschaline, is designed to enhance overall message security while improving system performance. The developed system incorporates biometric, and digital monitoring tools to ensure accurate supervision and inspection of school activities. Features include a surveillance camera for classroom monitoring biometric systems for teacher presence verification and teacher image capture for easy identification. The study utilized object-oriented Analysis and Design Methodology (OOADM) for system development and deployed technologies such as python, Django, PHP, and MYSQL for implementation, testing in selected schools in one of the zones in Ebonyi state demonstrated the efficiency of the online monitoring system and the reliability of the hybrid cryptographic model. The results confirm that the system ensures the availability, reliability and authenticity of secured data, thereby addressing the challenges of data transmission threats in educational institution.

Keywords: Cryptography, Blowfish, RSA, Information Management System.

CITE AS: Chinenye P. Ikeagwu; Virginia E. Ejiofor; Orji Everistus Eze and Godspower Akawuku (2025). Design and Implementation of an enhanced Cryptography model using the combination of Blowfish and RSA for the Security of Computer-based Integrated School Information Management System. RESEARCH INVENTION JOURNAL OF ENGINEERING AND PHYSICAL SCIENCES 4(1):90-98 https://doi.org/10.59298/RIJEP/2025/419098