Secure Distributed Banking System
A high-performance C++/Qt banking platform engineered for secure, real-time financial operations across a multi-threaded client-server architecture.
Encrypted Request Pipeline
To prevent packet sniffing and data tampering, I developed a custom communication protocol using QTcpSocket with XOR-based encryption. Every request—from balance checks to wire transfers—is packaged into a structured JSON object, encrypted on the client side, and decrypted server-side before execution.
Bitwise XOR Security
Custom low-level encryption ensures secure data exchange without the overhead of heavy external libraries.
RBAC Implementation
Granular Role-Based Access Control separates standard user features from administrative database management.
Concurrent Request Handling
The server is designed for high availability, utilizing multi-threading to handle simultaneous client requests without blocking operations. A Singleton-patterned JSON database provides centralized, persistent storage for accounts, transaction histories, and repayment schedules.
JSON Persistent Storage
Implemented a robust mapping system that translates nested JSON structures into in-memory objects for rapid access and update cycles.
Role-Based Dashboard Orchestration
I engineered custom Qt Widgets to deliver a tailored experience for different user tiers, ensuring that sensitive administrative tools are strictly decoupled from standard user interfaces.
Standard User Interface
- Secure Session Management: Integrated encrypted login protocols to establish authorized client-server sessions.
- Real-Time Financial Oversight: Instant access to account balances and transaction history formatted into high-readability tables.
- Transactional Integrity: Facilitated secure fund transfers and wire operations with automated server-side verification.
Administrative Control Panel
- Full User Lifecycle (CRUD): Authorized tools to create, update, and delete user accounts directly within the persistent database.
- Global Database Visibility: Advanced access to view and audit the entire JSON-based bank registry for system consistency.
- Audit Logging & Monitoring: Real-time logging of all incoming client requests for debugging and security auditing.