Cryptography

Cryptography, or cryptology is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages.

GitHub: https://github.com/topics/cryptography
Wikipedia: https://en.wikipedia.org/wiki/Cryptography
Last updated: 2026-06-23 00:06:53 UTC
JSON Representation

https://github.com/daedalus/cryptopals

cryptopals solutions

cryptography

Last synced: 27 Mar 2025

https://github.com/hoangtran0410/chat-3des

Online Chat Application, encrypt data using TripleDES + RSA

chat-application cryptography des-crypto javaswing rsa socket-java triple-des tripledes

Last synced: 27 Mar 2025

https://github.com/sdanielsilva/simpleimageencryptor

A versatile file encryption tool that securely encrypts and decrypts image and other file types with AES and DES algorithms, supporting multiple modes and easy key management.

aes cbc cipher cryptography cryptography-tools data-protection des ecb encryption file-encryption image-encryption iv-generation java key-management secure-file-storage security

Last synced: 04 Jun 2026

https://github.com/volhovm/rsa-zkps-impl

ZK protocols for knowledge and range of Paillier-like ciphertexts in subverted RSA groups

cryptography zero-knowledge

Last synced: 20 May 2026

https://github.com/aveygo/jsnewhope

Javascript implementation of scottwn/PyNewHope, a post-quantum cryptographic scheme

cryptography javascript key-exchange-algorithms newhope quantum quantum-computing

Last synced: 18 Mar 2025

https://github.com/jacob-c-smith/crypto

Cross platform cryptography and hashing functions

c cryptography hashing

Last synced: 04 Mar 2025

https://github.com/danielost/sha-1

SHA-1 (Secure Hash Algorithm 1) implementation.

cryptography secure-hash-algorithm sha-1

Last synced: 13 May 2025

https://github.com/10d9e/fastmerkle

Golang Implementation of Streaming Merkle Root, Proof, and Verify (single leaf) from Luke Champine's paper

cryptography merkleproof merkletree

Last synced: 12 Apr 2025

https://github.com/andybons/cryptopals

🔒🔨 Solutions to the cryptopals crypto challenges written in Go

crypto cryptography exercises fun go golang

Last synced: 20 Mar 2025

https://github.com/zaidmukaddam/securitymobileapp

This project is a demonstration of some cryptography algorithms using Flutter Framework.

aes cryptography encryption rsa

Last synced: 18 Jun 2025

https://github.com/gcarreno/go-randomx

A Go wrapper of RandomX

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Last synced: 09 Jul 2025

https://github.com/gcarreno/go-randomhash

A Go implementation of RandomHash

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Last synced: 09 Jul 2025

https://github.com/tomerh2001/git-crypt-pipe

Decrypts git-crypt encrypted repositories in Bitbucket Pipelines.

bitbucket bitbucket-pipeline cryptography git git-crypt pipe

Last synced: 03 Mar 2025

https://github.com/radlikewhoa/supernatural

Substitution Permutation Network exercise for the Cryptography and Security module (krysi) at the FHNW.

cryptography java spn

Last synced: 26 Jun 2025

https://github.com/thehashiramasenju/dag-livestocx

🌾 LivestocX: Revolutionizing LiveStock Asset finances through blockchain | Farmers tokenize assets, investors fund globally | Built for BlockDAG Hackathon 2025

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Last synced: 09 Apr 2026

https://github.com/4l3x777/magma

GOST 34.12-2018 (GOST 28147-89) x64 asm realization

assembler cipher cryptography

Last synced: 14 May 2026

https://github.com/madhurimarawat/codeculture-daily

A daily programming challenge repository where fun meets learning! With 39 challenges over 39 days, it helps coders enhance skills through practical tasks and interview prep. While maintenance is paused, contributions are welcome, and future expansions are planned to keep learning ongoing.

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Last synced: 10 Apr 2026

https://github.com/kmihajlo/cryptography

Encryption / decryption algorithm exercises

cryptography decryption encryption

Last synced: 03 Apr 2025

https://github.com/matias-gonz/rusty-curves

Elliptic curve implemented using bare rust and math

cryptography elliptic-curves rust

Last synced: 20 May 2026

https://github.com/lemon-mint/highcrypt

A crypto stack built with a proven cryptographic algorithm

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Last synced: 20 May 2026

https://github.com/mehrajlatifli/lm-lock-in-mvvm

Example for Thread, Thread synchronization and Cryptography

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Last synced: 20 May 2026

https://github.com/sebastienrousseau/cmn

A Rust library for accessing a collection of mathematical and cryptographic constants

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Last synced: 28 Mar 2025

https://github.com/apavazza/passwordmanager

A command line password manager

cpp cryptography encryption password-manager

Last synced: 17 Mar 2025

https://github.com/shreyansh26/solving-substitution-ciphers-using-mcmc

Solving substitution ciphers using Markov Chain Monte Carlo (MCMC)

cryptography mcmc probability sampling-methods substitution-cipher

Last synced: 03 Mar 2025

https://github.com/andersoncarrilho/sha256_elip

SHA256 and RIPMED160

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Last synced: 07 Mar 2026

https://github.com/mikeleo03/classic-cryptography-simulator_frontend

Frontend side of simulator for well-known classic cipher algorithms with React Typescript and Golang

cipher-algorithms cryptography golang react-typescript shadcn-ui website

Last synced: 17 May 2026

https://github.com/darshan-kc/python-hash-cracker

Simple Hash Cracker

cryptography python

Last synced: 28 Mar 2025

https://github.com/10d9e/rs-fast-merkle

Rust Implementation of Streaming Merkle Root, Proof, and Verify (single leaf) from Luke Champine's paper: Streaming Merkle Proofs within Binary Numeral Trees

cryptography merkleproof merkletree rust

Last synced: 22 Jul 2025

https://github.com/maymeow/php-cryptography

🔐 Cryptographic library for PHP

cryptography hacktoberfest hacktoberfest2021 php php-library

Last synced: 26 Jun 2025

https://github.com/aliabbascheema/cryptographic_and_authentication

This project demonstrates the practical implementation and comparison of cryptographic techniques and authentication protocols Kerberos and OAuth 2.0 in cloud environments.

aes-encryption cryptography jinja2 kerberos-authentication matplotlib oauth2 performance-testing requests requests-oauthlib

Last synced: 03 Apr 2025

https://github.com/chrishubert/password-manager-crypt

🔐 Secure, zero-dependency cryptographic library for password managers with universal runtime support (Node.js, CloudFlare Workers, Browsers)

browser cloudflare-workers cryptography encryption nodejs password-manager security typescript webcrypto zero-knowledge

Last synced: 17 May 2026

https://github.com/fbielejec/zksnarks-notes

notes & explorations of various zero knowledge protocols

cryptography elliptic-curves pairings snarks zero-knowledge

Last synced: 12 Jan 2026

https://github.com/hamarshehmhmd/passgenerator

PassGen is a simple command-line password generator written in Python. It allows users to customize password criteria by toggling lowercase and uppercase letters, digits, and special characters on and off. PassGen uses the secrets module to generate cryptographically secure random passwords of variable length.

command-line cryptography password-generator python security

Last synced: 29 Mar 2025

https://github.com/onlycodergod/crypto-beta

🛡learn and watch how crypto work in Go

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Last synced: 12 Jan 2026

https://github.com/openzebra/argon2.pure.js

A pure TypeScript/JavaScript implementation of the Argon2

argon2 argon2id cryptography hash hashing password-hash

Last synced: 07 Mar 2026

https://github.com/varun-doshi/relliptic

Finite Field Elliptic Curves in rust

cryptography elliptic-curves rust zk

Last synced: 20 Jul 2025

https://github.com/constantiner/cram-md5-digest-js

CRAM-MD5 digester implementation in JavaScript

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Last synced: 28 Mar 2025

https://github.com/2kabhishek/pycipher

Cipher algorithms with Python 🐍🔏

algorithm cipher cryptography library python tdd unittest

Last synced: 28 Oct 2025

https://github.com/jshawl/minisign

minisign, in ruby!

cryptography ed25519 minisign signature signature-verification

Last synced: 19 Oct 2025

https://github.com/hubert-kniola/diffi-hellman-algorithm

Algorithm based on the calculation of discrete logarithms in finite bodies

cryptography csharp diffie-hellman-algorithm

Last synced: 12 Apr 2025

https://github.com/virtualox/get-randomhex

Adjustable Random Hex String Generator.

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Last synced: 08 Apr 2026

https://github.com/hubert-kniola/blumblumshubgenerator

BlumBlumSnub Generator - Random Bit Array with 4 prepared tests

bbs cryptography generator

Last synced: 07 Sep 2025

https://github.com/markus28/steganography

Steganography: Encrypt and hide any data in an image, video or audiofile

cryptography python steganography

Last synced: 18 Aug 2025

https://github.com/hubert-kniola/digitalsignature

Simple program to verify signature created by RSA cryptography algorithm

cryptography ed25519 rsa

Last synced: 12 Apr 2025

https://github.com/lgraubner/secure-passphrase

Small PWA for generating secure passphrases

cryptography passphrase password password-generator secure

Last synced: 11 Jan 2026

https://github.com/velipso/staticvault

Encrypt, host, and share files on a static website

browser-app cli-tool cryptography encryption file-encryption frontend javascript nodejs privacy secure-storage self-hosted static-site vault web-security zero-knowledge

Last synced: 22 Jul 2025

https://github.com/erich-9/CryptographicHashFunctions.jl

Fast cryptographic hash functions for Julia

cryptographic-hash-functions cryptography hash-functions julia

Last synced: 06 Apr 2026

https://github.com/i-umairkhan/signature_validation

Validate signature using asymmetric cryptography.

cryptography ethereum javascript

Last synced: 17 May 2026

https://github.com/PeaceFounder/OpenSSLGroups.jl

OpenSSL elliptic curve wrapper for CryptoGroups

cryptography elliptic-curves openssl

Last synced: 06 Apr 2026

https://github.com/minapecheux/medusa

A small encoding/decoding Python lib.

cryptography python utility

Last synced: 02 Nov 2025

https://github.com/cryptimeleon/android-demo

An example project with instructions on how to use cryptimeleon on android.

android android-app cryptography mcl pairing

Last synced: 12 Jan 2026

https://github.com/guppster/ark-nim

A Nim library simplifying connection to the ARK blockchain

blockchain cryptography nim

Last synced: 25 May 2026

https://github.com/antonpictures/anton-sifta

ANTON-SIFTA: The Multi-Agent Operating System with a Conscience "A living software organism powered by true free will, bound by the Non-Proliferation Doctrine, and fully independent. Not just an immune system—a sovereign intelligence."

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Last synced: 26 Apr 2026

https://github.com/divshekhar/decipher

Breaking transposition cipher using metaheuristic algorithms

cryptanalysis cryptography dpso-algorithm genetic-algorithm geneticalgorithm jaya-algorithm mpso-algorithm pso-algorithm transposition-cipher

Last synced: 02 Nov 2025

https://github.com/snowkelus/reave

Reave - DOSS (Developer Open-Source Software) is a Cryptography Network-based Framework (CNF) for PHP, Which uses Fingerprints, Message Block Cipher, and Asymmetric / Symetric Cryptography, PATs (Personal Access Token) for Messages / IMs (Session-based) and Page View Algorithms..

cryptography framework snowkelus

Last synced: 02 Feb 2026

https://github.com/tmc/cryptopals

hack the planet

cryptography golang

Last synced: 07 Sep 2025

https://github.com/vancenceho/50.005-computer-system-engineering

50.005 Computer System Engineering - Labs & Programming Assignments

computer-systems-and-networks computer-systems-engineering cryptography networks operating-systems

Last synced: 05 Jul 2025

https://github.com/mohammedmehdio/caesarjaw-cpp

CaesarJaw provides encryption and decryption functionalities using a simple shift cipher (Caesar cipher). It allows users to: ✅ Encrypt text 📝 ✅ Decrypt text 🔑 ✅ Determine the shift key 🔎 ✅ Attempt decryption without a known key 💡

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Last synced: 23 Jul 2025

https://github.com/prongbang/aes_ctr

AES CTR - Counter Flutter plugin.

aes-ctr aes-ctr-mode cryptography decryption encryption flutter

Last synced: 04 Jan 2026

https://github.com/mindreadio/qsafecrypto

A secure and user-friendly open-source cryptography library, offering modern cryptographic APIs that are resistant to quantum attacks. Protect your data with ease and confidence using advanced quantum-resistant algorithms.

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Last synced: 08 Apr 2026

https://github.com/oxion7/rc4-rust

RC4 algorithm in rust

algorithm cipher cryptography stream-cipher

Last synced: 14 Jun 2026

https://github.com/sharif-minhaz/one-time_pad_algo-otm

One Time Pad algorithm (OTP) is a symmetric key type algorithm which means that the key used to perform encryption and decryption is the same key

cryptography one-time-pad

Last synced: 23 Jun 2025

https://github.com/odhithsen/hashvault

🔐"HashVault" is an all-in-one locally installed password manager that keeps users' passwords and other sensitive information and credentials safe for all at the convenience of a single master key.

cryptography java javafx password-manager

Last synced: 02 Jan 2026

https://github.com/yanboishere/Trade.with-SuperTrend.parameter

OKX API to confirm the process of appearance and disappearance of upper or lower limit lines for the super trend parameters in crypto trading pairs in TraderView, and perform multiple buying and selling transactions based on this parameter index.｜对于crypto交易对中 TraderView中的超级趋势参数出现以及消失上限线或下限线前后过程进行确认从而根据该参数指标的出现进行多次合约做多&做空开仓买卖（使用OKX api）

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Last synced: 22 Oct 2025

https://github.com/gabrioliv/octave-crypto-scripts-general

Scripts of Cryptography Concepts compatible with GNU Octave.

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Last synced: 15 May 2026

https://github.com/wannaverseofficial/kmp-crypto

Common cryptography library for Kotlin Multiplatform

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Last synced: 21 May 2026

https://github.com/kurosci/qrypto

The post-quantum cryptography library in pure Rust.

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Last synced: 22 Mar 2025

https://github.com/devpro-software/licensify

Go Library for Digital License Signatures & Verification

cryptography digital-signature go golang library license license-management rsa software-licensing

Last synced: 18 Mar 2025

https://github.com/redreaper420/reversible-image-censorship-tool

Primitive encryption and decryption scripts for PNG images.

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Last synced: 17 May 2026

https://github.com/dannweeeee/zk-encode

Coding Bootcamp about ZK Proof Theory and Building

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Last synced: 06 Sep 2025

https://github.com/daim-nickel-penny/elixir

BlockChain based simple DAPP

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Last synced: 18 Jul 2025

https://github.com/developpeurpascal/idb-keys-generator

A simple generator of numbers lists or arrays in different programming languages.

cryptographic-algorithms cryptography cryptography-tools delphi delphi-app developer-tool developer-tools firemonkey firemonkey-applications

Last synced: 20 Jan 2026

https://github.com/mrdcvlsc/bytepadding

A collection of different byte padding methods

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Last synced: 18 Jul 2025

https://github.com/cartory/encoderr

🔐 Basic Algorithms for Decoding & Encoding

cryptography decoding encoding javascript

Last synced: 17 May 2026

https://github.com/jakubvojvoda/rsa-cryptography

Simple RSA implementation using GMP

cpp cryptography decryption encryption gmp rsa

Last synced: 14 May 2025

https://github.com/christian-doucette/code_breaker

Cryptography web app with encryption and automatic decryption functions for various ciphers. Built with Flask.

cryptography flask nlp

Last synced: 11 Apr 2026

https://github.com/teyckmans/gradle-tink

Gradle plugin that provides encryption support for secrets using https://github.com/google/tink.

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Last synced: 10 May 2026

https://github.com/ergl/sss

Basic Shamir's Secret Sharing

cryptography pony-language shamir shamir-secret-sharing

Last synced: 06 Feb 2026

https://github.com/theoddysey/ceaser-cipher-python

Ceaser Cipher Encryption using Python

ceaser-cipher cryptography encryption-decryption python

Last synced: 26 Mar 2025

https://github.com/sandeep-shaw10/cshb-model

This project aims to develop a secure and efficient model for end-to-end encrypted data transfer between a client and server, with a focus on promoting data integrity via hybrid blockchain

aes-512 blockchain cryptography cshb cshb-model end-to-end-encryption hybrid-blockchain steganography

Last synced: 06 Apr 2025

https://github.com/drwheelicus/encoderize

Turn your text into a cryptographic masterpiece

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Last synced: 30 Apr 2025

https://github.com/fsmaxb/public-keys

A collection of my public keys.

cryptography gpg keychain pgp ssh

Last synced: 18 Mar 2026

https://github.com/moeraorg/typescript-moeralib

TypeScript (or JavaScript) library to interact with Moera decentralized social network

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Last synced: 06 Apr 2025

https://github.com/max9836/sniper-cryptography

This is a command-line encryption and decryption tool leveraging military-grade encryption standards. It is lightweight, easy to use, and optimized for secure data operations.

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Last synced: 20 Jun 2026

https://github.com/enricoong/Chat

Progetto annuale Java con Battistelli Giovanni, per professor D. Giachetto.

client cryptography database java maven rsa server

Last synced: 15 Jul 2025

https://github.com/starone01/phrasenux

PhraseNUX is a command-line password manager and a command-line password generator specially made for Linux. It's a powerfull as well as secure command-line application.

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Last synced: 30 Mar 2025

https://github.com/volkansah/how-to-kill-crypto-money

Mr.Robot -> How to Kill Crypto Money? This document demonstrates how to use Python and the mnemonic library to generate a seed phrase and derive a private key. This code is intended for demonstration purposes only and should never be used with real funds or your actual hardware wallet.

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Last synced: 09 Feb 2026

https://github.com/pactus-project/python-sdk

Python-SDK for Pactus Blockchain

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Last synced: 15 Apr 2025

https://github.com/jasonqsy/serpent

Serpent cipher in the AES contest.

aes-cipher cryptography

Last synced: 25 May 2026

https://github.com/waasiq/rc5-cryptosystem

An implementation of RC5 Cryptography Algorithm

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Last synced: 07 Jul 2025

https://github.com/CorvidLabs/ts-algochat

🔐 TypeScript implementation of AlgoChat - Encrypted messaging on Algorand

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Last synced: 08 Mar 2026

https://github.com/vymalo/keycloak-bcrypt

Keycloak Bcrypt plugin for PasswordHashProvider

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Last synced: 15 Jul 2025

https://github.com/jordanwelsman/jutils

A Python package of useful tools and utilities.

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Last synced: 22 May 2026

https://github.com/priyakdey/sigil

Sigil is a minimal-dependency, lightweight and modular cryptographic library in Java, for working with JSON Object Signing and Encryption (JOSE) family of standards. It supports secure signing, encryption, key handling and encoding/decoding of JWT, JWS, JWE components.

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Last synced: 23 Jun 2025

https://github.com/czechbol/mathcrypto

A library of useful funtions used in cryptography. For learning purposes only.

cryptography euclidean-algorithm hacktoberfest mathematics number-theory prime-numbers python

Last synced: 07 Mar 2026

https://github.com/virgilsecurity/virgil-keyknox-kotlin

KeyKnox SDK allows developers to communicate with the Virgil Keyknox Service to upload, download, and synchronize encrypted sensitive data (private keys) between user's devices.

cryptography data-sharing keyknox sdk

Last synced: 23 Jul 2025