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.

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

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

pure-python ECDSA signature/verification and ECDH key agreement

Fastest 4KB JS implementation of secp256k1 signatures and ECDH

Audited & minimal JS implementation of elliptic curve cryptography.

Collection of pure Rust elliptic curve implementations: NIST P-224, P-256, P-384, P-521, secp256k1, SM2

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

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

Cryptographic signature algorithms: DSA, ECDSA, Ed25519

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

Kotlin Multiplatform cryptography / crypto library

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

Crypt::LE - Let's Encrypt / Buypass / ZeroSSL and other ACME-servers 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, EAB (External Account Binding) supported, easily extended with plugins, easily dockerized.

JSON Web Token library

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

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）

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.