File Integrity Checker

Project Type: Security Utility / Integrity Monitoring Tool

The File Integrity Checker is a lightweight security application that verifies whether sensitive files have been modified, tampered with, or corrupted. Utilizing SHA-256 hashing, the tool creates a unique fingerprint for any file and compares new scans against previous signatures to instantly flag unauthorized changes.

Built as a Windows executable, the tool requires no installation or Python environment, making it accessible for small businesses, students, and everyday computer users who need straightforward verification of file authenticity.

Key Features

• SHA-256 Hash Generation: Produces secure cryptographic hashes to uniquely identify files.
• Change Detection: Compares previous and new hash values to detect tampering, corruption, or accidental overwrites.
• Clear Integrity Reports: Presents results in a simple, readable format suitable for both technical and non-technical users.
• One-Click Operation: Designed with intuitive prompts to simplify file selection and verification.
• Fully Offline: No external dependencies, ensuring privacy and full local processing.
• Standalone Executable: Packaged as a Windows .exe for seamless deployment and frictionless use.

Tools & Technologies

• Python 3
• hashlib for cryptographic hashing
• File I/O and structured reporting
• PyInstaller for Windows executable packaging

Impact

The File Integrity Checker improves document security for SMEs, researchers, and students by providing a quick way to confirm whether files have been changed. This is crucial for environments where data authenticity — such as contracts, submissions, reports, and configuration files — must be preserved.

The tool serves as a practical introduction to integrity monitoring and demonstrates the value of file-based security controls in preventing unnoticed tampering or corruption.