kamalx06 / TornadoC2

Pull-based C2 framework with ten native transports, concurrent multi-profile handlers, and end-to-end ECDSA-signed tasking. Single Go binary agent with every property baked in at build time. Multi-operator team server with RBAC, audit chain, and a Qt/CLI console. Linux + Windows, amd64 + arm64.

apple / swift-crypto

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

phpseclib / phpseclib

PHP Secure Communications Library

kmackay / micro-ecc

ECDH and ECDSA for 8-bit, 32-bit, and 64-bit processors.

JonasAlfredsson / docker-nginx-certbot

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

bnb-chain / tss-lib

Threshold Signature Scheme, for ECDSA and EDDSA

RustCrypto / elliptic-curves

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

pion / dtls

DTLS 1.2 / 1.3 implementation for Go

whyoleg / cryptography-kotlin

A cryptography/crypto library for Kotlin Multiplatform

RustCrypto / signatures

Cryptographic signature algorithms: DSA, ECDSA, Ed25519

Nonco-Organization / python-ecdsa

pure-python ECDSA signature/verification

tooladda-online / ssh-key-generator

SSH Key Generator — Generate real Ed25519, RSA, or ECDSA SSH key pairs using your browser's native Web Crypto API — get OpenSSH-format public/private keys, fingerprints, and randomart instantly. Your private key is generated locally and never transmitted anywhere. Free on ToolAdda.online.