ecdh

PHP Secure Communications Library

Practical Cryptography for Developers: Hashes, MAC, Key Derivation, DHKE, Symmetric and Asymmetric Ciphers, Public Key Cryptosystems, RSA, Elliptic Curves, ECC, secp256k1, ECDH, ECIES, Digital Signatures, ECDSA, EdDSA

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

pure-python ECDSA signature/verification and ECDH key agreement

SM2/SM3/SM4/ECDH crypto library based on OpenSSL.

go 常用加密解密库/go encrypt or decrypt pkg（RSA/SM2/ECDSA/EC-GDSA/Gost/ElGamal/AES/DES/TripleDes/SM4/Tea/Twofish）

Small portable Elliptic-Curve Diffie-Hellman in C

Library for elliptic curves cryptography

Kotlin Multiplatform Crypto/PKI/ASN.1 Library with Attestation and Hardware-Backed Crypto Support on Mobile

Secure Wireless Data-Transfer over BLE and USB for Passwords, Pentesting and Media Control.

Safest and fastest Python library for secp256k1 elliptic curve operations

FxSsh is a lightweight SSH server side library. As an early codebase for Microsoft's Dev Tunnels SSH library. https://github.com/microsoft/dev-tunnels-ssh/tree/main/src/cs/Ssh#acknowledgements

Swift cryptography library for Bitcoin and Nostr. ECDSA, Schnorr, ECDH, and zero-knowledge proofs on secp256k1. Apple platforms and Linux.

A fast, lightweight, and full duplex secure end-to-end encryption protocol based on ECDHE

Tests support and behavior of elliptic curve cryptography implementations on JavaCards (TYPE_EC_FP and TYPE_EC_F2M) and in selected software libraries.

Ed25519 signing, verification and encryption, decryption for arbitary files; like OpenBSD signifiy but with more functionality and written in Golang - only easier and simpler

Elliptic Curve Cryptography playground/toolkit written in pure Python

A modern, cross-platform Web Push Notification library with full VAPID support. Handles payload encryption, authentication, and delivery across Node.js, Browsers, Deno, Bun, and Cloudflare Workers. Zero dependencies, TypeScript-first, and built for modern web applications.

Library for elliptic curves cryptography

A lightweight, encrypted, WAN oriented, software defined network device.