emSSL & emSSH

SEGGER emSSL delivers TLS 1.3 and TLS 1.2 security for embedded systems that must communicate over encrypted channels without the memory overhead and attack surface of OpenSSL or mbedTLS ports. Supporting both client and server modes, emSSL enables microcontrollers to establish secure HTTPS connections to cloud platforms, accept encrypted MQTT sessions from field devices, and serve configuration interfaces over TLS, covering the full spectrum of secure communication patterns found in IoT gateways, industrial edge nodes, and connected medical equipment deployed across Indian healthcare and manufacturing sectors.

TLS Version Support

Supported Cipher Suites

emSSH: Secure Shell

emSSH complements emSSL by providing SSH-2 secure shell access to embedded devices, with an SCP add-on for encrypted file transfer and port forwarding for tunneling other traffic securely. See emSSH for the full protocol, cipher, and licensing details.

emCrypt Foundation and Hardware Acceleration

Both stacks are built on emCrypt, SEGGER’s own cryptographic library implementing AES, RSA, ECC, and SHA algorithms with support for hardware crypto acceleration on silicon that provides it. Hardware offload reduces CPU load and power consumption for sustained encrypted communication, and the modular build system allows teams to include only the cipher suites their application requires, keeping ROM footprint to a minimum. Royalty-free licensing ensures that adding production-grade security to every unit shipped carries no incremental per-device cost.