SIGNIN: The Digital Signature and File Verification Management Application Using Secure Rapid Application Development Approach

In the current digital era, the security of official documents and digital signatures is becoming increasingly important to prevent the spread of false information or manipulated documents. This research aims to design, develop, and implement a web-based application that we call SIGNIN that addresses the issues of official document validity and digital signature security. The research methodology adopts a Secure RAD (Rapid Application Development) approach involving planning, system design, development, and implementation stages. In the system design stage, the STRIDE concept is used to identify and mitigate security threats in the application. This research shows that the SIGNIN application can provide an effective solution for managing digital signatures, verifying official documents, and enhancing the validity and integrity of records in a digital environment.