Development of a Secure Electronic Document Management System

Development of a Secure Electronic Document Management System
Abstract
Electronic Document Management Systems (EDMS) have become essential infrastructure for organizations seeking to digitize document workflows while maintaining security and compliance. However, traditional EDMS implementations suffer from inherent vulnerabilities including single points of failure, insufficient access controls, and inadequate audit mechanisms. This project presents the design and development of a secure electronic document management system that addresses these limitations through a multi-layered security architecture. The system implements AES-256-GCM encryption for document storage, RSA-based digital signatures for authenticity verification, and role-based access control with comprehensive audit logging. A hybrid storage model separates document content from metadata, while SHA-256 hashing enables integrity verification throughout the document lifecycle. The system supports document upload, versioning, approval workflows, and secure retrieval with granular permission management. Experimental evaluation demonstrates that the system provides robust protection against unauthorized access, data tampering, and document loss while maintaining usability for non-technical users. The implementation adheres to ISO 27001 documented information control requirements and provides audit-ready evidence trails.
Keywords: Electronic Document Management; AES-256 Encryption; Digital Signatures; Access Control; ISO 27001 Compliance; Audit Trail
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Chapter 1: Introduction
1.1 Background
Organizations across all sectors generate and manage vast quantities of documents—contracts, invoices, HR records, compliance documentation, and operational procedures. Manual document management systems relying on physical storage and shared drives create significant operational inefficiencies and security vulnerabilities. According to industry analysis, businesses can reduce document-handling costs by between 40% and 70% through digital transformation of document workflows .
The global COVID-19 pandemic accelerated the adoption of remote work arrangements, exposing the limitations of paper-based and locally-stored document systems. Organizations require solutions that provide secure access from distributed locations while maintaining compliance with regulatory requirements and protecting sensitive information from unauthorized disclosure.
1.2 Problem Statement
Traditional document management approaches face several critical challenges:
Security Vulnerabilities: Scattered documents across email attachments, shared drives, and cloud folders create multiple attack surfaces. Sensitive information lacks consistent encryption, and access controls are often inconsistent or absent.
Compliance Risks: Regulatory frameworks including ISO 27001, GDPR, and industry-specific standards mandate documented information controls that manual systems cannot reliably satisfy. Audit trails are incomplete, version control is inconsistent, and retention policies are rarely enforced.
Operational Inefficiencies: Document retrieval that should take seconds requires hours of searching. Approval workflows stall in email inboxes, and version confusion leads to errors and rework .
Data Integrity Concerns: Without cryptographic verification, organizations cannot demonstrate that documents have not been altered since creation or approval. This limitation undermines the evidentiary value of records and complicates legal proceedings .
1.3 Objectives
This project aims to design and implement a secure electronic document management system that:
1. Implements strong encryption for document storage using AES-256-GCM with unique keys per document.
2. Provides digital signature capabilities using RSA-PSS to verify document authenticity and detect tampering.
3. Enforces role-based access control with granular permissions and comprehensive audit logging.
4. Supports document lifecycle management including upload, review, approval, versioning, and secure deletion.
5. Delivers a user-friendly web interface accessible to non-technical users.
1.4 Scope and Limitations
The system focuses on organizational document management with support for common file formats including PDF, DOCX, TXT, and Markdown. The system does not implement OCR for scanned documents or integrate with external enterprise systems. Dynamic document collaboration and real-time editing are beyond the current scope.
1.5 Thesis Structure
Chapter 2 reviews related work in document management systems and security technologies. Chapter 3 presents the system architecture and design. Chapter 4 describes implementation details and evaluation results. Chapter 5 concludes with limitations and future work.
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Chapter 2: Literature Review
2.1 Evolution of Document Management Systems
Document management systems have evolved from simple file repositories to sophisticated platforms integrating workflow automation, compliance controls, and advanced security features. Early systems focused on digitization and centralized storage, while contemporary solutions emphasize lifecycle management, collaboration, and regulatory compliance.
Modern commercial platforms such as Metrofile's docuForce demonstrate the integration of paper and electronic workflows with legally compliant e-signatures, secure cloud storage, and audit-ready compliance controls . These systems address the complete document lifecycle from capture through disposal, providing organizations with centralized visibility and control.