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: 2026-07-06 00:07:00 UTC
JSON Representation

https://github.com/nuwax-io/nuwault-core

Generate consistent, secure passwords from keywords. TypeScript-based, with smart entropy controls.

client-side-encryption cryptography deterministic encryption hash password password-generator privacy-first security-tools web-crypto-api

Last synced: 03 Jun 2026

https://github.com/nuwax-io/nuwault-web

Advanced keyword-based password generator with client-side security, privacy focus and PWA support

client-side cryptography deterministic hashing offline password-generator password-strength privacy-first pwa security web-crypto

Last synced: 03 Jun 2026

https://github.com/mimi-netizen/python-scripts

This repository provides a versatile collection of Python scripts to streamline system administration tasks. It includes tools for browser automation, web scraping, and cryptographic operations, with detailed documentation and planned enhancements to expand functionality

cryptography selenium-webdriver webscraping

Last synced: 17 Apr 2026

https://github.com/akagi1/online-bcrypt-generator

Yet another online bcrypt generator.

bcrypt cryptography encryption generator javascript webpack

Last synced: 17 Apr 2026

https://github.com/lihongjie0209/sm-js-bc

SM2/SM3 cryptography TypeScript implementation based on Bouncy Castle Java - Zero dependencies, fully compatible, browser & Node.js support

bouncy-castle chinese-cryptography cryptography elliptic-curve gm-algorithm sm2 sm3 typescript

Last synced: 04 Apr 2026

https://github.com/hugoxox3/bitkeygen

BitKeyGen: A Python tool to generate Bitcoin private keys, WIFs, and addresses. Perfect for developers and crypto enthusiasts! Save keys to wallet.json securely. 🚀🔑 #Bitcoin #Crypto

bitcoin bitcoin-hacks bitcoin-key-generation bitcoin-wallet cryptocurrency cryptography cryptography-and-security

Last synced: 17 Apr 2026

https://github.com/vasilievsv/hw.pki-on-box

Educational PKI server on Radxa Zero (Linux) + STM32H750 TRNG via USB HID. SELinux + eBPF isolation. Python daemon. ISO 26262 ASIL A (educational).

buildroot cryptography ebpf embedded-linux iso26262 pki radxa selinux-policy-lang stm32 trng

Last synced: 12 Apr 2026

https://github.com/forgesworn/shamir-core

GF(256) Shamir's Secret Sharing — split and reconstruct secrets with threshold schemes

cryptography gf256 key-splitting secret-sharing shamir threshold typescript

Last synced: 04 Apr 2026

https://github.com/albovo/ctf-writeups

Here you can find some of the writeups of the ctfs I've played so far.

cryptography ctf-writeups network-security pwn python reverse-engineering scripting web-security

Last synced: 17 Apr 2026

https://github.com/aleksbelic/kryptonite-core

TypeScript cryptography library.

caesar-cipher cryptography cryptography-library typescript typescript-library

Last synced: 04 Apr 2026

https://github.com/sovereignbase/cryptosuite

JS/TS runtime-agnostic, quantum-safe, and agile cryptography toolkit with a declarative API for cipher messaging, message authentication, digital signatures, key agreement, and identifiers.

browser bun bytecodec crypto cryptography decryption deno encryption hmac jwk node opaque-identifiers signing sovereignbase typescript verification webcrypto

Last synced: 17 Apr 2026

https://github.com/akshdzn/encore

Encore is a web based tool for obfuscating or scrambling text using a variety of methods. Useful for scavenger hunts, easter eggs, or just fun.

cipher cryptography css html svelte tools vite

Last synced: 18 Apr 2026

https://github.com/roryeckel/decrypto

The automatic cryptography challenge solver & basic framework. Created August 2017.

cipher-crack cryptography ctf-tools solver

Last synced: 04 Apr 2026

https://github.com/abdulrahmans0414/securepass-generator

SecurePass Generator is a modern, user-friendly password generator built with React. Create strong, randomized passwords with customizable options like length, numbers, and special characters.

clipboard-copy cryptography frontend password-generator react securepasswords security tailwindcss user-friendly web-application

Last synced: 18 Apr 2026

https://github.com/ocdbytes/secp256k1_bitcoin

This is the cryptography algorithm used in bitcoin to generate public and private keys. Bitcoin uses SECP256k1 C-language library to use this encryption in the Bitcoin operating system.

bitcoin cryptography rsa-cryptography secp256k1

Last synced: 18 Apr 2026

https://github.com/alessiofrittoli/crypto-key

Lightweight TypeScript library for Node.js Cryptographic keys

cipher cripto-keys cryptography hash hmac scrypt

Last synced: 05 Apr 2026

https://github.com/thomasarmel/binary_polynomial_mod_algebra

Basic algebra on univariate binary polynomial (over GF(2))

algebr binary cryptography polynomial univariate

Last synced: 05 Apr 2026

https://github.com/kristinjeanna/crypto

Provides a variety of additional crypto packages for Go.

crypto cryptography go golang salted-hash ssha

Last synced: 05 Apr 2026

https://github.com/kimmy665/cores

🚀 Build modern admin panels easily with CoreS, a responsive template using React, TypeScript, and Tailwind CSS. Perfect for streamlined web applications.

ahb-lite asic-design asp-net-core audio axi4 bitcoin carthage cocoapods coredata cryptocurrency cryptography open-isa open-source-hardware riscv rtl sram usb western-digital

Last synced: 18 Apr 2026

https://github.com/rcmilan/ex-cryptographyapp

Implementando Criptografia em Runtime

cryptography dotnet intermediate-code-generation runtime typeconverter

Last synced: 19 Apr 2026

https://github.com/thearchitector/givemeaprivatekey-com

Hassle-free key pairs NOW

browser crypto cryptography free javascript private-key public-key tools website

Last synced: 04 Jun 2026

https://github.com/jaredliw/sunctf

SunCTF 2024 infrastructure.

competition cryptography ctf forensics hacking information-security osint penetration-testing reverse-engineering security steganography vulnerability

Last synced: 04 Jun 2026

https://github.com/theaswanson/hash-tool

A Windows Forms application that computes various hashes of a given file or string, including MD4, MD5, SHA1, SHA256, SHA512, and Whirlpool.

cryptography dotnet hashing

Last synced: 04 Jun 2026

https://github.com/nir3x/cryptorand.cpp

CryptoRand.cpp - Random Key Generation using Cryptographic Techniques

algorithm algorithms c-plus-plus cpp cryptography encryption entropy random random-number-generation security

Last synced: 04 Jun 2026

https://github.com/randika00/aes-encryption-decryption

Encryption and Decryption using AES (Advanced Encryption Standards)

aes aes-encryption cryptography decryption encryption

Last synced: 20 Apr 2026

https://github.com/karthik558/rust-crypt

A lightweight yet powerful file encryption utility implemented in Rust. Securely protect your sensitive files with AES-256-GCM encryption and Argon2 password-based key derivation.

cli-tool cross-platform cryptography encryption-decryption password-protection rust

Last synced: 05 Jun 2026

https://github.com/starlingvibes/rsa-factoring-challenge

We have sniffed an unsecured network and found numbers that are used to encrypt very important documents. It seems that those numbers are not always generated using large enough prime numbers. Your mission should you choose to accept it, is to factorize these numbers as fast as possible before the target fixes this bug on their server - so that we can decode the encrypted documents.

cryptography prime-numbers rsa

Last synced: 21 Apr 2026

https://github.com/virgilsecurity/demo-e2ee-android

A simple Android application that demonstrates how the end-to-end encryption (E2EE) works.

android cryptography demo demo-app encryption end-to-end-encryption key-management public-key-cryptography

Last synced: 21 Apr 2026

https://github.com/nuraj250/lockbox-secure-password-manager

LockBox is a lightweight yet powerful password manager built with Python. It encrypts and securely stores your passwords, providing an intuitive CLI and optional GUI for easy access. Say goodbye to forgotten passwords and hello to secure automation! 🔒🚀

authentication automation cryptography cybersecurity encryption lockbox password-manager pyqt5 python secure-storage sqlite

Last synced: 21 Apr 2026

https://github.com/bch-team-pro/bch-wallet

Bitcoin Cash (BCH) – securely send, receive, and store BCH with full control over your private keys. Works on Windows, Linux, and macOS, with support for hardware wallets, QR codes, and transaction tracking. No registration required—ideal for desktop-focused users.

bch bch-coin bch-electrum-wallet bch-wallet bitcoin-cash bitcoin-wallet crypto crypto-wallet cryptography electrum electrum-bitcoin-cash electrum-cash electum-bch non-custodial web3

Last synced: 21 Apr 2026

https://github.com/ppad-tech/poly1305

The Poly1305 message authentication code

cryptography haskell mac poly1305

Last synced: 21 Apr 2026

https://github.com/sohnryang/crypto-contest-2020

상받은 2020년 암호경진대회 솔루션

block-cipher crypto-contest cryptography hill-cipher loop-unrolling

Last synced: 21 Apr 2026

https://github.com/markuszoppelt/aes_argon2_trezor

Short demo on how to use AES with Argon2id KDF and Trezor

aes argon2 cryptography kdf trezor

Last synced: 21 Apr 2026

https://github.com/umstek/classiccryptolib

Classical Cryptography in Modern Code

cipher cryptography encryption

Last synced: 22 Apr 2026

https://github.com/nouemankhal/multitictactoe

Mutlplayer Tic Tac Toe Game in JAVA

cryptography java multithreading mysql socket-programming swing

Last synced: 22 Apr 2026

https://github.com/aarontsang/secure-auth-threat-detection

Backend service to maintain security.

bcrypt cryptography docker jwt-authentication postgresql postman reactjs redis salting

Last synced: 22 Apr 2026

https://github.com/paulshpilsher/ethereum-cryptography

Ethereum Cryptography

blockchain cryptography ethereum web3

Last synced: 23 Apr 2026

https://github.com/quantumcoinproject/circl

Hybrid Post Quantum Cryptography Library in GO

blockchain cryptography hybrid-pqc pqc quantumcoin

Last synced: 05 Jun 2026

https://github.com/ashu11-a/ashcrypt

Files protected with encryption

aes aes-256 aes-cipher aes-encryption aes-gcm asynchronous-crypto buffer crypto crypto-library crypto-tools cryptography encryption gcm node-aes node-crypto nodejs pbkdf2 stream-encryption typescript

Last synced: 24 Apr 2026

https://github.com/redx94/quantumblockchainautomation

A revolutionary initiative combining Quantum Computing and Blockchain Technology to establish a secure, decentralized system for quantum-powered data integrity. This project pioneers the fusion of advanced quantum randomness with blockchain's immutability, ensuring unmatched reliability and security for distributed data processes

blockchain blockchain-immutability cryptography data-integrity decentralization distributed-systems ethereum flask-dashboard ganache ibm-quantum-experience qiskit quantum quantum-blockchain-fusion quantum-randomness quantum-security quatum-cryptography smart-contracts zeromq

Last synced: 24 Apr 2026

https://github.com/en1gm4-exe/tryhackme

Write-ups and Walkthroughs for TryHackMe challenges and labs — covering enumeration, exploitation, privilege escalation, and more.

blue-teaming cryptography forensics hands-on-lab penetration-testing reverse-engineering shell

Last synced: 24 Apr 2026

https://github.com/swamikannan/revisiting-python

Building projects based on libraries such as Turtle and tkinter to brush up on non-ML skills

coffee-machine cryptography customtkinter etch-a-sketch password password-manager-app password-manager-ui python3 tkinter-gui tkinter-python turtle

Last synced: 06 Jun 2026

https://github.com/jurshsmith/vaultstream

High-Performance Distributed Digital Signature System

cryptography ecdsa-key-pair golang jetstream nats-streaming postgresql

Last synced: 25 Apr 2026

https://github.com/ntdls/nasccl

NetworkDLS Algorithmic Symmetric Cipher Cryptography Library

cryptography encryption library

Last synced: 25 Apr 2026

https://github.com/hopex-development/cipher

Provides encryption and decryption (not for everyone, see the documentation) of strings using MD5, SHA1, SHA256, Base 16, Base64, DES, AES algorithms.

aes cryptography dotnetframework encryption

Last synced: 25 Apr 2026

https://github.com/islam-hady9/image-encryption-and-steganography-with-des_and_lsb

An image encryption and steganography project implementing DES encryption and LSB techniques for secure image embedding and transmission.

cryptography decryption des encryption image-processing jupyter-notebook lsb python steganography

Last synced: 25 Apr 2026

https://github.com/samarjit98/security-lab

Some popular cryptographic algorithms.

c cpp cryptography des-encryption encryption-decryption gmp number-theory

Last synced: 25 Apr 2026

https://github.com/imnotannamaria/python-flask-auth

Flask User Authentication and CRUD API

cryptography flask pymysql python

Last synced: 25 Apr 2026

https://github.com/toxic-whitelgnd/matrice_cryptography

A simple math Project based on Matrices-Cryptography by using python-numpy

cryptography math-problem matrices numpy python3

Last synced: 25 Apr 2026

https://github.com/tykoth/cryptopsy

Encryption/Decryption tests.

command-line cryptography cryptojs testing

Last synced: 26 Apr 2026

https://github.com/aartintelligent/hosanna-rs-secret

Safe in-memory secret types for Rust - SecretString and SecretBytes with redacted Debug/Display, zeroisation on drop, constant-time equality, and deserialise-only serde. Rust counterpart to Pydantic's SecretStr / SecretBytes.

constant-time credentials cryptography no-unsafe redacted rust rust-crate secrets security zeroize

Last synced: 07 Jun 2026

https://github.com/jchambers/java-noise

A Java implementation of the Noise Protocol Framework

cryptography java noise noise-protocol noise-protocol-framework security

Last synced: 26 Apr 2026

https://github.com/0xm4rk1h/human-collapse

A Minecraft modpack focused on technology and automation, with the goal of uncovering the truth. Obtaining the “Tome of Knowledge” grants you a book containing clues to discover that truth, and you will need to use cryptography and steganography to achieve it.

cryptography minecraft modpack steganography

Last synced: 07 Jun 2026

https://github.com/yunomiwell/nullwire

Encrypting messages is solved. Hiding that you sent one isn't — yet. NullWire: Loopix mixnet + X3DH/Double Ratchet E2E + Solana control plane. Pre-alpha. Whitepaper v0.3.

anonymous-communication blockchain cryptography double-ratchet loopix mixnet p2p post-quantum privacy rust solana sphinx x3dh zero-knowledge

Last synced: 27 Apr 2026

https://github.com/moosesue/extended-gcd

Extended GCD algorithm in Python and Rust

cryptography cryptography-algorithms extended-gcd gcd number-theory python rust rust-lang

Last synced: 27 Apr 2026

https://github.com/santiellena/cryptopals

My solutions to Cryptopals challenges (http://cryptopals.com/) written in Rust

cryptography rust-lang security

Last synced: 07 Jun 2026

https://github.com/161chihuahuas/equihash

⛏️ native equihash solver and verifier

client-puzzle cryptocurrency cryptography equihash khovratovich nodejs proof-of-work zcash

Last synced: 27 Apr 2026

https://github.com/sundeeep/sundeeep-blockchain

Building blockchain from scratch using GoLang.

bitcoin blockchain cryptography golang network security sha256-hash web3

Last synced: 27 Apr 2026

https://github.com/l0g0rhythm/cryptoolsec

Secure Python CLI & GUI tool for efficient file/stream encryption & decryption (AES-256-GCM, streaming I/O). Supports passwords (Argon2id+Salt) or key files. Built for security and automation

aes aes-256 aes-gcm argon2 argon2id authenticated-encryption cli cross-platform cryptography decryption encryption file-encryption gui kdf pyside6 python python3 qt6 security streaming

Last synced: 27 Apr 2026

https://github.com/cluena/password-manager

cryptography password-manager python

Last synced: 07 Jun 2026

https://github.com/glinford/oqs.js

Node.js Bindings for liboqs

cryptography nodejs postquantum

Last synced: 28 Apr 2026

https://github.com/anupamakib/login-registration-cryptojs-aes-md5-react.js-node.js

aes-encryption cryptography javascript md5

Last synced: 12 Jun 2026

https://github.com/thenareshofficial/file-encryptions

File encryption and decryption Tool in python

algorithm cmd command-line-tool cryptography cybersecurity-tool decryption docker docker-image encryption file-encryption-python github hashing pip python python-decrypt python-docker python-encryption python3 requirements tool

Last synced: 28 Apr 2026

https://github.com/a-luna/dotnetcore-crypto

.NET Core 2.0 class library containing an implementation of SHA-3 hashing functions and file encryption methods which employ both AES and RSA algorithms to maximize data security and computational efficiency.

cryptography csharp dotnet-core dotnet-core2 dotnetcore encryption encryption-algorithms hashing sha3 sha3-224 sha3-256 sha3-384 sha3-512

Last synced: 28 Apr 2026

https://github.com/below/cgjprofilelib

The cgjprofile Library

cryptography provisioning-profiles swift swift-package-manager

Last synced: 28 Apr 2026

https://github.com/gbennnn/stegcrypt

StegCrypt is a lightweight steganography tool for securely embedding and extracting hidden messages within digital images.

cryptography decryption encription flask image-encryption python secret steganography

Last synced: 28 Apr 2026

https://github.com/dang12345512/sol-check

sol-check is a powerful Solana network tool that provides comprehensive validation and verification of smart contracts to ensure secure and efficient performance. It offers advanced analysis and debugging capabilities to help developers identify and resolve potential issues in their Solana-based applications.

audit checkio cryptography iphone memecoin objective-c security sol sol-check solana-token solana-token-bot solidity token trump-coin

Last synced: 28 Apr 2026

https://github.com/jayagra/turbid

aes-256 cryptography encryption macos swift

Last synced: 28 Apr 2026

https://github.com/lukechilds/og-zkp

Prove your Bitcoin OG status in zero-knowledge

bitcoin cryptography risc-zero risc0 risc0-zkvm zero-knowledge zkp

Last synced: 08 Jun 2026

https://github.com/jacob-ian/deno_rsa

Generate/decode RSA Public and Private Keys and create signatures with SHA256withRSA (RS256) in Deno.

cryptography deno denoland rsa typescript

Last synced: 29 Apr 2026

https://github.com/joaoiacillo/vault-guard

A script utility for encrypting and decrypting Obsidian vaults.

cryptography gpg obsidian pgp security

Last synced: 29 Apr 2026

https://github.com/dkxce/dixu

dkxce simple opensource free symmetric crypt algorythm (UTF8, ASCII, Win-1251)

512 cryptography dkxce encoder-decoder security text windows

Last synced: 29 Apr 2026

https://github.com/ranareebaal/minting-nfts

Minting NFTs in different quantities without Gas Fee!

blockchain-technology cryptography etherscan minting-nfts nextjs nfts typescript vercel-serverless-functions

Last synced: 29 Apr 2026

https://github.com/ismaelvr1999/encrydb

This project is a database management system created from scratch, with a focus on security and encryption.

cryptography database nacl pynacl python

Last synced: 29 Apr 2026

https://github.com/cloudflareresearch/anonymous-credentials-agent-demo

Demo for Anonymous Credentials Token for Rate-Limiting Agents

agents cryptography mcp token

Last synced: 29 Apr 2026

https://github.com/avivijay19/hash-generator

Hash generator is a crypto based android application which works on different hashing algorithms.

android cryptography kotlin kotlin-android

Last synced: 29 Apr 2026

https://github.com/tarranprior/postbox

📫 Postbox is a lightweight encryption tool which allows users to generate key pairs, exchange public keys, encrypt and decrypt messages, and communicate securely over SMTP using RSA. Built with C#.

console cryptography csharp dotnet encryption smtp

Last synced: 30 Apr 2026

https://github.com/pavan-m060/capstone_project

🔐 Encryption & Decryption Web App A simple Flask-based web application that implements Caesar and Transposition ciphers for secure text encryption and decryption. Includes file handling support and a user-friendly local HTML interface for seamless interaction.

ceaser-cipher cryptography decryption encryption filehandling flask python transposition-cipher webapplication

Last synced: 30 Apr 2026

https://github.com/hptrk/uni-rabin-encryption-python

(UNIVERSITY) Implementation of the Rabin cryptosystem and digital signatures using modular arithmetic and prime number theory. Includes encryption, decryption, and signature verification with a detailed PDF report.

cryptography python rabin-cryptosystem sagemath university-project

Last synced: 30 Apr 2026

https://github.com/mdsaddam7860/password_generator_using_react_vite_and_tailwindcss

A simple yet powerful password generator built with React and Vite for fast development, styled with Tailwind CSS for a clean, responsive design.

cryptography developer-tools frontend javascript open-source password-generator-javascript react-hooks reactjs security-tool tailwind tailwind-ui vite vitejs webapp

Last synced: 30 Apr 2026

https://github.com/adippel/cms-encryption-go

Go example for performing CMS encryption with OpenSSL using CGO. Companion code for the blog post “CMS Encryption in Go”.

cryptography go golang libcrypto openssl

Last synced: 08 Jun 2026

https://github.com/maximilianfeldthusen/basic-secure-kernel-module

The code is a basic kernel module that demonstrates how to initialize a secure driver, though integrating TPM or HSM functionality would require additional kernel-space libraries, such as tpm_tis or tpm_dev for TPM devices.

aes c cryptography hsm kernel linux-kernel request tpm-plugin

Last synced: 01 May 2026

https://github.com/mutkuensert/androidsignatureexample

An example Android app for generating key pairs in trusted execution environment to sign data requiring biometric authentication using Android keystore.

android androidkeystore biometric-authentication cryptography digital-signature digital-signature-algorithm dsa-algorithm ecdsa elliptic-curve keypair keystore secure-enclave security tee trusted-execution-environment

Last synced: 01 May 2026

https://github.com/fabienheureux/cryptopals

(ˆ(oo)ˆ)

cryptography cryptopals go

Last synced: 01 May 2026

https://github.com/unkaktus/padding

random padding

cryptography padding

Last synced: 08 Jun 2026

https://github.com/ioexcept10n/filekeeper

A project of a file encryption Android app made with .NET MAUI

android cryptography csharp cybersecurity dotnet maui

Last synced: 01 May 2026

https://github.com/theoddysey/blockchain-go

A Bitcoin-like blockchain implementation in Go, demonstrating cryptographic principles, PoW consensus, UTXO transactions, wallet management, and P2P networking.

bitcoin blockchain boltdb consensus-algorithm cryptocurrency cryptography decentralized distributed-systems ecdsa golang p2p-network proof-of-work utwork wallet

Last synced: 02 May 2026

https://github.com/alle-bartoli/enigmatik

Secure password generator

cryptography enigma localhost password password-generator rust rustlang terminal terminal-app terminal-based

Last synced: 02 May 2026

https://github.com/baha2rm98/crypto_note

Developed by : Baha2rM98 and AshkanAbd

android-app cryptography java

Last synced: 02 May 2026

https://github.com/nakedmcse/tscryptopals

TS Implementation of Cryptopals challenges

cryptography typescript

Last synced: 02 May 2026

https://github.com/tolstoyj/go-voting-blockchain

🗳️ Production-ready blockchain-based voting system built with Go. Features secure cryptographic operations, real-time results, and seamless deployment capabilities.

api blockchain cryptography docker go golang postgresql redis rest security voting

Last synced: 02 May 2026

https://github.com/kenatsf/solidity-signature

cryptography ethereum nextjs security smart-contracts solidity

Last synced: 03 May 2026

https://github.com/cmangun/agentic-receipts

Standard receipts and trace semantics for verifiable agent execution

agentic-systems ai-governance cryptography provenance regulated-ai verifiable-ai

Last synced: 03 May 2026

https://github.com/simonbetton/easydoge-km

Production-ready Dogecoin key-management SDK for Rust, Swift, Kotlin, Expo, and CLI/TUI.

cryptography dogecoin expo kotlin react-native rust swift wallet

Last synced: 09 Jun 2026

https://github.com/kwas123/blockchain-file-verification

🔒 Verify file integrity and authenticity with this decentralized system on Ethereum, ensuring secure, tamper-proof document validation through blockchain technology.

axios bitcoin blockchain blockchain-technology copyleft cryptography dapp fir modular move openpgp p2p pinata-ipfs python react sha256 timestamp trusted-timestamping

Last synced: 04 May 2026

https://github.com/vikas2171/my-portfolio

An original, responsive terminal portfolio designed in Figma and built with vanilla HTML/CSS/JS. Features a live CLI, client-side ciphers, and serverless functions.

cli cryptography css figma html javascript netlify portfolio-website responsive-design serverless terminal