tiny-ECDH-c
A minimal, portable C implementation of Elliptic-Curve Diffie-Hellman for secure key exchange.
What is tiny-ECDH-c?
Tiny-ECDH-c is a minimal, portable C implementation of the Elliptic-Curve Diffie-Hellman key agreement algorithm. It allows two parties to establish a shared cryptographic secret over insecure channels using elliptic-curve cryptography, with a focus on small code size and no external dependencies.
Embedded systems developers, IoT engineers, and anyone needing lightweight cryptographic key exchange in resource-constrained C environments.
It offers the smallest known ECC implementation in C, is public domain, supports multiple standard curves, and requires zero internal memory allocation—making it ideal for systems where code size and portability are critical.
Overview
Small portable Elliptic-Curve Diffie-Hellman in C
Use Cases
Best For
- Adding ECDH key exchange to embedded firmware
- Implementing secure communication in IoT devices with limited resources
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