ecdsa

kjur/jsrsasign

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.

apple/swift-crypto

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

ZenGo-X/multi-party-ecdsa

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

tlsfuzzer/python-ecdsa

pure-python ECDSA signature/verification and ECDH key agreement

JonasAlfredsson/docker-nginx-certbot

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

brannondorsey/chattervox

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

paulmillr/noble-secp256k1

Fastest 4KB JS implementation of secp256k1 signatures and ECDH

RustCrypto/elliptic-curves

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

paulmillr/noble-curves

Audited & minimal JS implementation of elliptic curve cryptography.

NoMoreFood/putty-cac

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

RustCrypto/signatures

Cryptographic signature algorithms: DSA, ECDSA, Ed25519

saturneric/GpgFrontend

A free, open-source, robust yet user-friendly, compact and cross-platform tool for OpenPGP encryption. It stands out as an exceptional GUI frontend for the modern GnuPG (gpg).

tintinweb/ecdsa-private-key-recovery

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

do-know/Crypt-LE

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.

pascaldekloe/jwt

JSON Web Token library

wbond/oscrypto

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

AntonKueltz/fastecdsa

Python library for fast elliptic curve crypto

ANSSI-FR/libecc

Library for elliptic curves cryptography

NetDevPack/Security.Jwt

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.

whyoleg/cryptography-kotlin

Kotlin Multiplatform cryptography / crypto library

deatil/go-cryptobin

go 常用加密解密库/go encrypt or decrypt pkg（RSA/SM2/EIGamal/Gost/AES/DES/TripleDes/SM4/Tea/Twofish）

tlsfuzzer/tlslite-ng

TLS implementation in pure python, focused on interoperability testing

BitcoinPHP/BitcoinECDSA.php

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

Xor-el/CryptoLib4Pascal

Crypto for Modern Object Pascal

mcdallas/cryptotools

ing-bank/threshold-signatures

Threshold Signature Scheme for ECDSA

cloudflare/zkp-ecdsa

Proves knowledge of an ECDSA-P256 signature under one of many public keys that are stored in a list.

ZenGo-X/gotham-city

Gotham city is a fully functional project to demonstrate real-life example of minimalist Bitcoin decentralized HD wallet using 2 party ECDSA

bitcoinjs/bip32

A BIP32 compatible library.

wqweto/VbAsyncSocket

Sockets with pure VB6 impl of TLS encryption

tendermint/signatory

Multi-provider digital signature library for Rust

demining/CryptoDeepTools

Crypto Deep Tools a set of scripts for detailed cryptanalysis of the Blockchain network in cryptocurrency Bitcoin

LatticeX-Foundation/opentss

An ECDSA threshold signature algorithm implemented in Rust.

plume-sig/zk-nullifier-sig

Implementation of PLUME: nullifier friendly signature scheme on ECDSA

rdubois-crypto/FreshCryptoLib

Cryptographic Primitives for Blockchain Systems (solidity, cairo, C and rust)