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 Linux platforms.

pure-python ECDSA signature/verification and ECDH key agreement

Modern cross-platform open-source GUI for OpenPGP encryption, combining beginner-friendly simplicity, expert-level power, and full portability.

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

Safest and fastest Python library for secp256k1 elliptic curve operations

FxSsh is a lightweight SSH server side library.

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

Elliptic Curve, Schnorr, and ZKP for Bitcoin. Supports iOS macOS tvOS watchOS visionOS + Linux.

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

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

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

Elliptic Curve Cryptography playground/toolkit written in pure Python

A generic ECDH implementation

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

a native library implementing secp256k1 purely for the crystal language.