440 Open source projects that are alternatives of or similar to Constantine

gurvy implements Elliptic Curve Cryptography (+Pairing) for BLS12-381, BLS12-377, BW6-761, and BN256. Originally developed (and used) by gnark

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

Rust language general purpose elliptic curve cryptography.

Public key cryptography library for Ruby providing the X25519 Diffie-Hellman function

Nayuki's implementation of cryptographic primitives used in Bitcoin.

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

A place for useful crypto-related resources plus some of my fav stuff

Bulletproofs are short non-interactive zero-knowledge proofs that require no trusted setup

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Python library for fast elliptic curve crypto

Generator and supporting evidence for security of the Tweedledum/Tweedledee pair of elliptic curves suitable for Halo

An implementation of the Wickr Secure Messaging Protocol in C

A pure-Rust implementation of group operations on Ristretto and Curve25519

Scripts that illustrate basic cryptography concepts based on Coursera Standford Cryptography I course and more.

Filecoin Signing Library

Library consisting of explanation and implementation of all the existing attacks on various Encryption Systems, Digital Signatures, Key Exchange, Authentication methods along with example challenges from CTFs

Cryptographic primitives for MirageOS

InterPlanetary File System for Business (IPFSfB) is an enterprise blockchain storage network based on InterPlanetary File System.

MSc Module

A curated list of cryptography papers, articles, tutorials and howtos.

Easy-to-use high-level library for PKI-enabled applications

Tracking the Progress of OMEMO Integration in various clients

Java implementation of K-Sortable Globally Unique IDs

Online client-side manager for secure storage and secrets sharing.

A CONIKS implementation in Java

Qtum Core Wallet

🎵 Algorithms written in different programming languages - https://zoranpandovski.github.io/al-go-rithms/

UFONet - Denial of Service Toolkit

CogniCrypt is an Eclipse plugin that supports Java developers in using Java Cryptographic APIs.

Python implementation of anonymous linkage using cryptographic linkage keys

Elastic sidechains

A tool to analyze multi-byte xor cipher

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

Node.js bindings to rust_sodium.

A dead simple tool to sign files and verify digital signatures.

Uncomplicated cryptography frameworks base on CommonCrypto

CogniCrypt_SAST: CrySL-to-Static Analysis Compiler

Cryptography for Flutter developers: encryption, digital signatures, key agreement, etc.

Cryptography Android application code samples / cipher collection for app users

An extensible open-source framework for creating private/permissioned blockchain applications

Nim wrapper for the libsodium library

Bramble is a hacking Open source suite.

Elliptic Curve Cryptography playground/toolkit written in pure Python

An implementation of TLS and related specifications in Common Lisp

An independent implementation of the Powers of Tau MPC ceremony.

Datasafe - flexible and secure data storage and document sharing using cryptographic message syntax for data encryption

LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining modes, pseudo-random number generators, public key cryptography and a plethora of other routines.

Mundane is a Rust cryptography library backed by BoringSSL that is difficult to misuse, ergonomic, and performant (in that order).

A core and experimental implementation of ClaimChain

Easily create authenticated data structures

📚 VoidHack CTF write-ups

Lethean Virtual Private Network (VPN)

CryptoTrojan in Python (For educational purpose ONLY)

wolfSSL (formerly CyaSSL) is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3!

Tools for creating Merkle trees, generating merkle proofs, and verification of merkle proofs.

Go implementation of OPAQUE (hidden password user registration and auth)

A secure and PGP enabled webmail module for Phosphorus Five

Ruby FFI binding to the Networking and Cryptography (NaCl) library (a.k.a. libsodium)

Cross-platform cryptographic functions in swift

An implementation of Heilman et al.'s differential attack on IOTA's Curl hashing function.