EGEKEY FIDO2 is an open-source hardware security key designed to provide robust authentication and data protection. Built on the power of the STM32L432KC microcontroller, this project aims to bridge the gap between high-end commercial security tokens and DIY hardware flexibility.

While most DIY security keys focus only on FIDO2, EGEKEY goes further by integrating a dedicated AES-256 encryption engine accessible via a custom C# SDK. This allows the device to act not only as a login token but also as a physical "vault key" for custom software applications.

Key Features
MCU: STM32L432KC (Ultra-low-power ARM Cortex-M4 with hardware crypto acceleration).

Protocol: Full USB HID implementation (no drivers required).

Security: FIDO2/CTAP2 compliance for passwordless login.

Custom Encryption: On-board AES-256 bit encryption/decryption for third-party software protection.

SDK Support: Comes with DongleSDK, a dedicated C# library for seamless integration into desktop applicatio