Open-source implementation of a substantial portion of the API of Apple CryptoKit suitable for use on Linux platforms.

wolfSSL SM cipher implementations

VESvault End-to-End Encryption API: Encrypt Everything Without Fear of Losing the Key

Elliptic Curve Cryptography (ECC) Framework, ECC, ECDH(E), ECDSA, EC ElGamal, ECIES, HMAC

Library for elliptic curves cryptography

Microchip AVR based smartcard/token with ECC and RSA cryptography

Elliptic Curve Diffie-Hellman in C

OpenPGP ECC API based upon libecc

Library for elliptic curves cryptography

A full rewrite of Red Petya ransomware from 2016 with full MBR and GPT support

Small portable Elliptic-Curve Diffie-Hellman in C

C Crypto library supporting DES, AES128, SHA256, CCM-AES128, ECDSA, ECDH, PKCS#1 v1.5

Key Agreement using OpenSSL and ECDH

openssl ECDH_compute_key example

Example code demonstrating ecdh key agreement using openssl evp library.