SHA-256 File Verifier

A desktop SHA-256 verification toolkit with two implementations:

• Python + Tkinter version
• C++ Win32 + Windows CNG (BCrypt) version

Verify file integrity by comparing a calculated SHA-256 hash with a trusted hash.

Features

• Browse and select a local file
• Calculate SHA-256 for the selected file
• Compare calculated hash against an expected hash
• Show clear match or mismatch result
• Dedicated Read Hash flow in the C++ app
• Input normalization and basic path hardening in the C++ app

Tech Stack

Variant	UI	Hashing	Build/Runtime
Python version	Tkinter	hashlib.sha256	Python 3
C version	Win32 API	Windows CNG (bcrypt)	CMake + C++17

Project Structure

SHA-256_File_Verifier/
|-- python version/
|   `-- main.py               # Python Tkinter verifier
|-- C version/
|   |-- main.cpp              # C++ Win32 verifier
|   |-- CMakeLists.txt        # CMake build config
|   `-- build.ps1             # PowerShell build helper
`-- README.md                 # Project documentation

GitHub Shortcuts

• Python folder: python version
• C++ folder: C version
• Python app file: python version/main.py
• C++ app file: C version/main.cpp
• Build script: C version/build.ps1
• CMake config: C version/CMakeLists.txt

Clone and Open

git clone https://github.com/BnHany/SHA-256_File_Verifier
cd SHA-256_File_Verifier

Getting Started

Python Version

Prerequisites

• Python 3.10 or newer

Run

cd "python version"
python main.py

C Version

Prerequisites

• CMake 3.16+
• A C++17-compatible Windows compiler (MSVC or MinGW)
• PowerShell

Build

cd "C version"
.\build.ps1 -Config Release

Optional clean rebuild:

.\build.ps1 -Config Release -Clean

Run

After build, run one of:

.\build\hash_verifier_gui.exe
.\build\Release\hash_verifier_gui.exe

How to Use

1. Select a file.
2. Enter the trusted SHA-256 hash (64 hex characters).
3. Click verify:

• Python app: Verify
• C++ app: Verify Hash Match

4. Read the result dialog for match/mismatch.

Notes

• SHA-256 hashes are displayed in lowercase hex.
• The C++ app performs extra path and file-type validation before hashing.

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Learn More / Documentation

If you want to understand the internal implementation, security considerations, and design decisions behind the SHA-256 File Verifier (both Python and C++ versions), refer to the detailed documentation below:

This documentation is helpful for learners, security students, and developers who want to explore how SHA-256 verification is implemented across different stacks.

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Author

BnHany

Built with ❤️ to simplify file integrity verification for everyday users. Contributions, issues, and feature requests are welcome.

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📄 License

This project is licensed under the MIT License.
Feel free to use, modify, and distribute. Please give proper credit and use responsibly.