🛡️ Digital Evidence Chain-of-Custody System

A secure, full-stack web application designed to track, log, and maintain the forensic integrity of digital evidence. This system ensures data immutability and complete accountability matching standard corporate security workflows.

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🚀 Key Security Features

• SHA-256 Hashing Engine: Automatically calculates and binds a unique cryptographic signature to every uploaded evidence asset upon ingestion.
• Live Integrity Verification: One-click automated comparison mechanism that flags any unauthorized file modifications or data corruption with clear visual state badges.
• PostgreSQL Immutability Triggers: Hardened database layer equipped with strict backend rules that actively block and intercept any DELETE or UPDATE tampering attempts, even from administrative database accounts.
• Secure Forensic Access Portal: Authenticated tracking environment featuring masked password fields and protected application route parameters.

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🛠️ Tech Stack & Architecture

• Backend Framework: Python (Flask)
• Database Management: PostgreSQL + pgAdmin 4
• Cryptographic Layer: SHA-256 (Python hashlib)
• Frontend Design: Glassmorphic UI (HTML5, Modern CSS3 Core)

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🎯 Project Presentation Roadmap

1. Authentication: Sign in via the secure portal interface.
2. Evidence Ingestion: Upload an operational file tracking asset to generate its permanent cryptographic signature.
3. Integrity Validation: Demonstrate the system verifying that the data remains untampered.
4. Tampering Defiance Demo: Execute a rogue DELETE query directly inside pgAdmin 4 to showcase the active database trigger blocking the attack vector.