ecdsa

PHP Secure Communications Library

The 'jsrsasign' (RSA-Sign JavaScript Library) is an opensource free cryptography library supporting RSA/RSAPSS/ECDSA/DSA signing/validation, ASN.1, PKCS#1/5/8 private/public key, X.509 certificate, CRL, OCSP, CMS SignedData, TimeStamp, CAdES and JSON Web Signature/Token in pure JavaScript.

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

📡 An AX.25 packet radio chat protocol with support for digital signatures and binary compression. Like IRC over radio waves.

Rust implementation of {t,n}-threshold ECDSA (elliptic curve digital signature algorithm).

Automatically create and renew website certificates for free using the Let's Encrypt certificate authority.

Fastest JS implementation of secp256k1. Independently audited, high-security, 0-dependency ECDSA & Schnorr signatures.

Collection of pure Rust elliptic curve implementations: NIST P-256, P-384, secp256k1

Crypt::LE - Let's Encrypt / Buypass / ACME client and library in Perl for obtaining free SSL certificates (inc. generating RSA/ECC keys and CSRs). HTTP/DNS verification is supported out of the box, easily extended with plugins, easily dockerized.

A simple library to recover the private key of ECDSA and DSA signatures sharing the same nonce k and therefore having identical signature parameter r

Windows Secure Shell Client With Support For Smart Cards, Certificates, & FIDO Keys

JSON Web Token library

Cryptographic signature algorithms: DSA, ECDSA, Ed25519

Compiler-free Python crypto library backed by the OS, supporting CPython and PyPy

Library for elliptic curves cryptography

Python library for fast elliptic curve crypto

PHP library to generate BTC addresses and signatures from private keys.

Jwt Manager. Set of components to deal with Jwt Stuff. Automate your key rotating, add support for jwks_uri. Store your cryptography keys in a secure place.