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: 2026-06-30 00:07:03 UTC
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https://github.com/nanda-gopal-sb/password_manager

A Password Manager in mordern C++.

bitwise cli cpp cryptography file filesystem password

Last synced: 03 Apr 2025

https://github.com/sayalisachin/medicrypt

This is a Hospital Communication System Using DNA Encryption and Image Steganography This project enables secure communication between two hospitals, Hospital A and Hospital B, by encrypting and hiding sensitive patient data within images using DNA encryption and Least Significant Bit (LSB) steganography techniques, powered by Socket.IO

cryptography dna dna-sequencing information informationsecurity lsb lsb-steganography manipal-institute-of-technology matplotlib pandas pillow security socket-io steganography streamlit websocket

Last synced: 13 Apr 2026

https://github.com/lmaotrigine/klip

Copy/paste anything over the internet

clipboard cryptography network rust security security-protocol staging-server transit

Last synced: 05 Sep 2025

https://github.com/sip-protocol/sip-protocol

Shielded Intents Protocol - The Privacy Standard for Web3

blockchain cross-chain cryptography defi intents near-protocol nextjs privacy privacy-preserving sdk stealth-addresses typescript web3 zcash zero-knowledge-proofs

Last synced: 16 Jun 2026

https://github.com/sedarius-1/kryptografia

University Project to create encrypting/decrypting app in Java with JavaFx GUI

cryptography encryption java university-assignment

Last synced: 25 Apr 2025

https://github.com/konfigyr/konfigyr-crypto

Spring Boot Crypto library

crypto cryptography java key-management spring-boot tink

Last synced: 30 May 2026

https://github.com/taoq-ai/qkd-playground

Interactive web-based Quantum Key Distribution simulator and learning platform. Step through BB84, E91, and B92 protocols, visualize qubit states, and simulate eavesdropping attacks.

bb84 cryptography cybersecurity education interactive qkd quantum-computing quantum-key-distribution quantum-simulation react

Last synced: 13 Apr 2026

https://github.com/axthauvin/cacher-du-texte-dans-du-texte

Python module and its web equivalent, to hide text within text by manipulating bits

cryptography javascript python text

Last synced: 09 Jun 2026

https://github.com/gers2017/cerberus

Cerberus, guardian of the underworld. A Python CLI tool to cipher your data

cesar-cypher cli cryptography cypher developer-tools python

Last synced: 11 Mar 2025

https://github.com/tychosoft/moderncli

C++17 header only library for common uses.

cpp cross-platform cryptography header-only lock-free logging-library multithreading serial socket-programming ssl string-manipulation sync

Last synced: 06 Jul 2025

https://github.com/tom-auger/xchacha-dotnet

A .NET wrapper for the XChaCha APIs in the libsodium crypto library

crypto crypto-library cryptography libsodium xchacha xchacha-dotnet xchacha20-poly1305

Last synced: 14 Jan 2026

https://github.com/yawning/edwards25519-extra

Go ed25519 extras (mirror)

crypto cryptography ed25519 h2c vrf

Last synced: 24 Jun 2026

https://github.com/yashkarthik/steno_hide_text

Hide text in an image with steganography.

cryptography image-manipulation python steganography

Last synced: 11 Mar 2026

https://github.com/ocdbytes/ecdsa-node-blockchain

This project is an example of using a client and server to facilitate transfers between different addresses. Since there is just a single server on the back-end handling transfers, this is clearly very centralized. We won't worry about distributed consensus for this project.

cryptography ethereum-cryptography javascript publickey-cryptosystem vitejs

Last synced: 13 Apr 2026

https://github.com/farial-mahmod/symmetric-encryption

This repository shows an example of two-way encryption and decryption process using Python.

cryptography encryption python

Last synced: 09 Apr 2025

https://github.com/kevincharm/sparse-merkle-tree

Optimised SMT implementation in Solidity & accompanying JS lib

cryptography ethereum evm merkle-tree solidity sparse-merkle-tree

Last synced: 16 Mar 2026

https://github.com/awais922609/cyber-security-interview-question-answers

Welcome to the Cybersecurity Questions and Answers Repository! This project aims to create a comprehensive collection of questions and answers related to various cybersecurity topics. Whether you’re a beginner looking to learn or a seasoned professional wanting to share your knowledge, this repo is the perfect place for you.

cryptography cybersecurity grc network-engineer networking penetration-testing security-engineering security-operations-center

Last synced: 08 Jan 2026

https://github.com/exploide/ulpcrypt

Implementation of the U-LP Cryptosystem

cryptography cryptography-library

Last synced: 06 Sep 2025

https://github.com/damaged-organic/ravelcast

RavelCast allows to share text messages of any content, completely anonymous, without registration and any clues about users identity.

cryptography css3 html5 javascript php symfony2

Last synced: 17 Mar 2026

https://github.com/web3pack/base58-check

A modern base58-check encoding library implemented in TypeScript with minimal dependencies for use in browser and Node.js.

base58 base58-check base58check bitcoin checksum crypto cryptography decode decoding encode encoding javascript nodejs typescript web3

Last synced: 13 Apr 2026

https://github.com/octocorvus/broccoli_salsa

Salsa20 stream cipher implementation in Rust.

ciphers cryptography rust

Last synced: 16 Mar 2025

https://github.com/timjp87/elixir_bls

Wrapper around the Herumi BLS 12-381 Elliptic Curve construction and signature aggregation scheme.

cryptography ecdsa-cryptography ecdsa-signature elixir elixir-lang signatures

Last synced: 30 May 2026

https://github.com/mayank-02/simplified-des

Implementation of a simplified version of the DES algorithm

cryptography data-encryption-standard educational python simplified-data-encryption-standard simplified-des

Last synced: 16 Mar 2025

https://github.com/recidvst/python-cryptography

Playing around with various python hashing and encoding methods as a learning exercise.

cryptography hash image python python3

Last synced: 16 Mar 2025

https://github.com/sudhanplayz/ecdsa-node

Secure, centralized transfers with Elliptic Curve Signatures.

crypto cryptography ecdsa elliptic-curve-cryptography elliptic-curves security

Last synced: 29 Oct 2025

https://github.com/mohamed/pysss

A Python implementation of Shamir's secret sharing algorithm

computer-security cryptography

Last synced: 14 Jan 2026

https://github.com/slayernominee/one-time-pad-encryption

cryptography rust

Last synced: 12 Jul 2025

https://github.com/mdamt/erpiko

Mirror of H. Erpiko

c-plus-plus certificate cryptography digital-signature pkcs pki smime

Last synced: 04 Apr 2025

https://github.com/dag0310/otp-crypto

Pseudo one-time pad crypto library for plaintext data exchange.

crypto cryptography encryption key library one-time-pad otp perfect-secrecy random xor

Last synced: 18 Jan 2026

https://github.com/forentfraps/acpkm-kuznechik-rust

Acpkm kuznechik implementation in RUST

acpkm cryptography kuznechik rust

Last synced: 05 Oct 2025

https://github.com/sean9999/go-oracle

A package that provides basic high-level cryptographic functions using Curve25519

awesome cli cryptography go

Last synced: 14 Jan 2026

https://github.com/elamani-drawing/huffmanrs

Huffmanrs est une bibliothèque Rust permettant d'encoder et de décoder du texte en utilisant le codage de Huffman.

compression crates-io cryptography encodage encoding huffman huffman-coding huffman-compression-algorithm rust rust-lang

Last synced: 07 Oct 2025

https://github.com/humanjavaenterprises/nostr-crypto-utils

The nostr-crypto-utils repository provides a suite of cryptographic tools tailored for the Nostr protocol, facilitating secure key management, event signing, and encryption functionalities for developers building Nostr applications.

cryptography data-encryption decentralized-protocols digital-signatures elliptic-curve-cryptography event-signing key-management nostr public-key-infrastructure secure-communication

Last synced: 21 Jan 2026

https://github.com/ericlagergren/ocb3

OCB3 - Offset Codebook Mode

cryptography ocb ocb3

Last synced: 14 Jan 2026

https://github.com/thefish/gogost

Cypherpunks.ru gogost mirror

cryptography encryption-algorithms gost russian

Last synced: 14 Jan 2026

https://github.com/lynkos/high-school-code

Archive containing my code for competitive programming problems during high school.

ap-computer-science ap-computer-science-a competitive-programming cryptography ctf ctf-solutions ctf-writeups eclipse gui java reverse-engineering

Last synced: 10 Oct 2025

https://github.com/minhngt62/cryptography-vigenere

A simulation for vigenere cipher and its attacking methods

cryptanalysis cryptography kasiski-examination python vigenere-cipher

Last synced: 10 Oct 2025

https://github.com/projects-developer/fake-news-detection-using-machine-learning-project

Live Fake news detection refers to the process of identifying and flagging false or misleading informion presented as news. Live Fake news detection using machine learning. Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

blockchain btech-project computer-science-projects computerscienceprojects cryptography fakenewsdetection final-year-projects finalyearproject finalyearprojects iee-projects machinelearning major-project minor-project mtech-project webdevelopment

Last synced: 17 Feb 2026

https://github.com/ajnouri/network-automation

Development container for network automation.

ansible cryptography napalm net-tools netmiko openssh-client paramiko pexpect pycharm-ide pyntc python python-pip python3-setuptools python36 telnet

Last synced: 19 Jan 2026

https://github.com/blester125/kasiski_examination

Kasiski Examination written to break a Vigenere Cipher for CS 1653 includes a C Red-Black tree impelmenatation

cryptography kasiski-examination red-black-tree

Last synced: 21 Jan 2026

https://github.com/symphonyprotocol/p2p

Decentralized P2P networking framework

cryptography golang network p2p

Last synced: 14 Jan 2026

https://github.com/myndscript/qalx

Quantum Level Security

algorithms cryptography

Last synced: 14 Jan 2026

https://github.com/nobleknightt/gravityfalls

Implementation of Famous Ancient Ciphers and Encryption Techniques

ciphers cryptography morse-code python

Last synced: 14 Dec 2025

https://github.com/anubhav-narayan/pkns

Public Key Name System Framework for Key Exchange in Peer-To-Peer and centralised servers.

cryptography key-exchange peer-to-peer public-key-cryptography python-3 python3-framework web-service

Last synced: 19 Jan 2026

https://github.com/chainsafe/vdf-js

cryptography javascript verifiable-delay-functions

Last synced: 13 Oct 2025

https://github.com/chainsafe/pairings-js

Elliptic Curve Pairings in Pure Javascript

cryptography elliptic-curves javascript pairings

Last synced: 13 Oct 2025

https://github.com/th0rgal/cryptohack

What I use for cryptohack

cryptography maths

Last synced: 14 Oct 2025

https://github.com/crane-valley/kylix

A post-quantum cryptography library implementing NIST FIPS standards in pure Rust.

cryptography dilithium fips-203 fips-204 fips-205 kyber lattice-cryptography ml-dsa ml-kem no-std post-quantum pqc rust security slh-dsa

Last synced: 28 Jan 2026

https://github.com/talha-1010/des-algorithm

A symmetric-key algorithm for the encryption of digital data.

cpp cryptography datastructures des-algorithm encryption-decryption template-specialisations

Last synced: 18 Oct 2025

https://github.com/amr-yasser226/datagovernanceworkflow

Comprehensive data governance pipeline for SSH honeypot logs—covering data profiling, cleansing, quality assurance, encryption, classification, and GDPR/CCPA/HIPAA compliance. Built with Pandas, Pandera, YData Profiling, and cryptography, with simulated Caesar cipher attacks to demonstrate practical data-security techniques.

caesar-cipher ccpa cryptography cybersecurity data-cleaning data-encryption data-governance data-profiling data-quality data-validation data-visualization gdpr hipaa honeypot-analysis open-source pandas privacy-compliance python ssh-logs

Last synced: 05 Feb 2026

https://github.com/rohith-2/cryptographic_blockchain

Simulating Blockchain with mining and peer verification

blockchain cryptography mining sha-256

Last synced: 23 Jan 2026

https://github.com/projects-developer/steganography-project

Steganography is the practice of hiding secret information within a non-secret message, image, or other medium. Steganography Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

btechprojects computerscienceprojects cryptography cybersecurity dataencryption datahiding digitalforensics informationsecurity mtechprojects secretcommunication steganalysis steganography steganography-project

Last synced: 06 Feb 2026

https://github.com/enjeck/cryptoalgovisualizer

Visualizations of various cryptography algorithms

algorithms cryptography visualization

Last synced: 24 Oct 2025

https://github.com/outspace/vigdec

vigdec aka heartbreaker – tool that breaks Vigenère cipher without knowing the key.

breaker cryptography decryption decryptor substitution-cipher vigenere vigenere-cipher vigenere-cipher-algorithm vigenere-decoder

Last synced: 25 Oct 2025

https://github.com/kestra-io/plugin-crypto

cryptography kestra pgp plugin

Last synced: 25 Oct 2025

https://github.com/iboudhaine/rsa-encryption-and-in-practice

Implementation and exploration of RSA encryption, including its security properties, practical applications, and real-world use cases. A class project to learn and experiment with cryptographic principles

cryptographic-algorithms cryptography cryptography-project encryption python rsa secure-communication security

Last synced: 25 Oct 2025

https://github.com/karasz/securelog

Forward-secure Go library for tamper-evident audit logs, implementing Ma–Tsudik’s dual-MAC private-verifiable scheme.

audit-logging compliance cryptography forward-security golang log-integrity secure-logging tamper-detection

Last synced: 26 Oct 2025

https://github.com/ul-mds/pprl

Collection of software packages for performing privacy-preserving record linkage based on Bloom filters

cryptography privacy python record-linkage

Last synced: 28 Jan 2026

https://github.com/harsh-ps-2003/haikyu

A Bitcoin miner simulation

bitcoin cryptography sqlite

Last synced: 25 Feb 2026

https://github.com/crane-valley/kylix-cli

A command-line interface for Kylix, a post-quantum cryptography library implementing NIST FIPS standards in Rust.

cli command-line cryptography digital-signatures fips-203 fips-204 fips-205 key-generation ml-dsa ml-kem post-quantum pqc rust slh-dsa

Last synced: 28 Jan 2026

https://github.com/hassan-shahbazi/vismasign

Swift library for Linux and macOS

cryptography linux macos security swift swift-4 swift-package-manager swift5

Last synced: 16 Mar 2026

https://github.com/umstek/enigma

A generalized software model of the Enigma electro-mechanical rotor cipher machines used by Germans in WWII.

cryptography enigma visual-basic world-war2

Last synced: 30 Jan 2026

https://github.com/rohankalbag/cryptography-signal-protocol

Cryptography and Network Security - Spring Semester 2024 - Indian Institute of Technology Bombay

cryptography end-to-end-encryption signal-protocol

Last synced: 31 Jan 2026

https://github.com/projects-developer/cyber-security-final-year-projects-github

Cyber threat detection using machine learning is a proactive approach to cybersecurity that involves training machine learning algorithms. Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

b-techprojects bcaprojects computer comupterscienceproject cryptography cyber-security final-project final-year-project m-techprojects machine-learning mcaprojects

Last synced: 07 Feb 2026

https://github.com/parassalunke/stega-shield

Stega-Shield is a modern web application that lets you hide secret messages within images using steganography and encryption. Built with React and TailwindCSS, it provides a secure and user-friendly way to encode and decode hidden messages.

cryptography cybersecurity javascript react steganography tailwindcss vite

Last synced: 25 Feb 2026

https://github.com/oritwoen/vusi

ECDSA signature vulnerability analysis library and CLI

bitcoin cryptography ecdsa nonce-reuse private-key-recovery rust security vulnerability-detection

Last synced: 01 Feb 2026

https://github.com/inferadb/ledger

InferaDB Ledger — distributed database purpose-built for authorization.

access-control audit-log authorization blockchain cryptography database distributed-systems fine-grained-access-control grpc immutable-ledger inferadb permissions rebac rust storage zanzibar

Last synced: 29 Jun 2026

https://github.com/ideal-lab5/etf.js

Encryption to the Future Javascript SDK

cryptography encryption etf timelock-encryption

Last synced: 17 Mar 2026

https://github.com/systemslibrarian/postquantum.fileformat

Draft specification for a hybrid post-quantum file encryption format. X25519+ML-KEM-1024 + Ed25519+ML-DSA-87. EXPERIMENTAL — seeking review.

cryptography dotnet draft-spec file-format hybrid-encryption post-quantum specification

Last synced: 01 Jun 2026

https://github.com/demining/japanese-version-of-bitcoin-blockchain-cryptanalysis

ビットコイン暗号解析ツール

attack bitcoin bitcoin-wallet btc cryptoanalysis cryptography privatekey secp256k1 vulnerability

Last synced: 09 Feb 2026

https://github.com/kolosovpetro/rsaencryptionexplained

Simple explanation on the symmetric encryption problematics and main idea behind the Rivest-Shamir-Adleman (RSA) encryption.

assymetric-encryption assymetric-key-cryptography cryptography rsa-cryptography rsa-encryption rsa-key-encryption

Last synced: 09 Feb 2026

https://github.com/andreispurim/aradi

Implementation of the NSA cryptography algorithm ARADI and LLAMA

algorithm aradi cryptography decryption encryption llama nsa

Last synced: 09 Feb 2026

https://github.com/contisimone99/simple-hw-asimmetric-encryption

Simple Asymmetric Encryption (SAE) system implemented in SystemVerilog and Python. Demonstrates basic key generation, encryption, and decryption operations using modular arithmetic with communication between two parties through public key exchange.

cryptography cybersecurity encryption hardware-design systemverilog verilog

Last synced: 10 Feb 2026

https://github.com/talyx/amib

Реализация криптографических алгоритмов/протоколов/схем

cryptography

Last synced: 19 Apr 2026

https://github.com/ggsmith842/crypto-hacks

CTF challenges from the Cryptohack Cryptography course.

cryptography ocaml

Last synced: 10 Feb 2026

https://github.com/arunanshub/webbin

WebBin: The Based Pastebin

compression cryptography flask pastebin security sqlalchemy

Last synced: 11 Feb 2026

https://github.com/tuokri/unrealscript-fcrypto

Pure UnrealScript SSL/TLS implementation and cryptography utilities based on BearSSL. Work in progress.

bearssl block-cipher cryptography decryption ecdh ecdhe encryption hkdf hmac https-client sha-1 udk ue3 unreal-engine-3 unrealscript xxtea

Last synced: 19 Mar 2026

https://github.com/tranvansang/crypto-report

Cryptography lecture report in M1 at the university of Tokyo

checksum cryptography damm hash-functions isbn quasigroup

Last synced: 27 Feb 2026

https://github.com/sanderhelleso/caesarcipher

First used by Julius Caesar, the Caesar Cipher is one of the more well-known older historical encryption methods. While you certainly wouldnt want to use it in todays modern world, a long time ago it might have done the trick. Play Around with different text below. Simply enter some text and press either "Decrypt" to decrypt a encrypted message or "Encrypt" to encrypt a message. Have Fun!

ceasar-cipher cryptography javascript react

Last synced: 16 Apr 2026

https://github.com/machu-gwu/windtalker-project

Encrypt and decrypt text, binaries, files, and directories with a variety of cipher options.

cryptography encryption python tool

Last synced: 13 Feb 2026

https://github.com/interkosmos/lucifer

Lucifer block cipher in FORTRAN 77

cipher cryptography des encryption fortran fortran-77 lucifer

Last synced: 13 Feb 2026

https://github.com/astropilot/bigeye

A web security challenges website, a school project for my software security course

challenge cryptography ctf-platform security web

Last synced: 19 Mar 2026

https://github.com/dipanshkhandelwal/manytimepad

A solution to many time pad attack https://manytimepad.js.org/

cryptography encryption manytimepad onetimepad

Last synced: 15 Feb 2026

https://github.com/nanoframework/system.security.cryptography

📦 .NET nanoFramework System.Security.Cryptography

cryptography csharp dotnet embedded-systems hacktoberfest nanoframework

Last synced: 02 Mar 2026

https://github.com/artdelpi/seguranca-computacional-vigenere

Este projeto implementa a cifra de Vigenère e ataque por análise de frequência.

cibersecurity cryptography flask vigenere vigenere-cipher

Last synced: 02 Jun 2026

https://github.com/benwoo1110/cryptographyapp

Advanced converter for modern cryptography algorithms

cryptography csharp

Last synced: 31 Mar 2026

https://github.com/womb0comb0/hack-knight-25

blockchain cryptography ehr full-stack fullstack hackathon healthcare nextjs python typescript

Last synced: 16 Apr 2026

https://github.com/grittygrease/safe-encryption-skill

SAFE encryption skill for AI coding assistants

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Last synced: 04 Mar 2026

https://github.com/0800tim/tournamental

Tournamental — verified tournament prediction game + 3D match renderer (tournamental.com)

betting cryptography prediction prediction-model sports sports-analytics sports-betting sweepstakes

Last synced: 03 Jun 2026

https://github.com/nandanr06/full-stack-cryptocurrency

Cryptocurrency Tracker is a real-time app for monitoring cryptocurrency prices, market trends, and historical data. Powered by the CoinGecko API, Node.js, Express, and React, it allows users to view live market updates, explore trending coins, and analyze price histories with interactive charts—all in a responsive, user-friendly interface.

bitcoin cryptocurrency cryptography marketplace

Last synced: 17 Apr 2026