Secure Transport Protocol designed for embedded systems, Linux environments, IoT infrastructure and industrial communication systems.
Uses ECDH key exchange and AES-256-GCM authenticated encryption for secure communication.
Designed for embedded devices, industrial systems, LTE-M products and IoT deployments.
Supports both Linux userspace and Linux kernel development environments.
Native integration with MQTT transport layers and message broker infrastructures.
Designed to minimize connection overhead and maximize communication efficiency.
Open development model with source code available through GitHub.
STCP v2 has been benchmarked against a comparable TLS implementation using the same application workload: 5 concurrent clients and 500 MB of application data transferred through an echo-style test.
Higher is better
Application traffic counted in both directions
Lower is better
Benchmark results represent the current STCP v2 development version and the current TLS comparison runner. Results may change as both implementations evolve.
Secure framing, encrypted payload handling and key exchange model.
Low-level BSD socket based STCP v2 implementation for Linux userspace.
Verified MQTT-over-STCP communication with Zephyr RTOS and LTE-M hardware.
Multi-client throughput testing and STCP versus TLS benchmark comparisons.
Next development phase focuses on Linux kernel integration research and reusable commercial SDK packaging.
STCP has been successfully integrated with MQTT and tested over LTE-M networks using Nordic Semiconductor hardware and Zephyr RTOS.
Secure communication between controllers, gateways and backend services.
Secure telemetry and device management across distributed infrastructures.
Lightweight encrypted transport for large-scale IoT deployments.
Secure transport for custom Linux devices and edge computing solutions.
STCP (Secure Transport Protocol) is a lightweight encrypted transport protocol developed for modern embedded systems, Linux platforms, industrial communication and IoT infrastructure.
The project is developed by Paxsudos IT, a Finnish technology company focused on software engineering, embedded systems, secure communication technologies and infrastructure solutions.
Source code: