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/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/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/akshatamohanty/practical-blockchain
Website for practicalblockchain.org. Practical Blockchain is a meetup group in Singapore, started in 2021. We focus on talks and workshops by speakers building blockchain applications in production, learning from their research and insights.
blockchain cryptography dapps ethereum security smartcontracts solidity zkproof
Last synced: 09 May 2026
https://github.com/pccr10001/cryptoauthlib
Microchip CryptoAuthentication Library
arduino arduino-library atca atecc508a cryptoauthlib cryptography esp32
Last synced: 10 May 2026
https://github.com/doublegate/cado-nfs-modern
CADO-NFS (modern): an enhanced modernization + performance fork of CADO-NFS (Number Field Sieve — integer factorization & discrete log) on current toolchains. Adds GPU linear algebra + full vector residency, a GPU ECM pre-factoring front-end, SDE-validated AVX-512 VPCLMULQDQ/IFMA kernels, and Rust orchestration. LGPL-2.1.
cado-nfs cpp cryptography discrete-logarithm factorization hpc integer-factorization modernization-fork nfs number-field-sieve number-theory python
Last synced: 16 Jun 2026
https://github.com/sh1kxrv/xaf-vault
Cross-platform `VAULT`
cli cryptography monorepo pet-project turborepo typescript ui
Last synced: 10 May 2026
https://github.com/mohammedmehdio/rsa
Python tool to work with RSA encryption
cryptography cybersecurity python python3 rsa rsa-cryptography rsa-encryption security tools
Last synced: 22 Apr 2026
https://github.com/octocorvus/broccoli_salsa
Salsa20 stream cipher implementation in Rust.
Last synced: 16 Mar 2025
https://github.com/sourish-kanna/side-projects
These are my other side projects which are not that big for a dedicated repository
ascii cesar-cipher cesar-cypher cryptography encryption java python side-project
Last synced: 11 May 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/ryleeharrison/iv-crypto
More of an example, not recommended for production use
Last synced: 26 Mar 2025
https://github.com/talyx/amib
Реализация криптографических алгоритмов/протоколов/схем
Last synced: 19 Apr 2026
https://github.com/bogwi/r-math
A Rust crate for rare, high-performance mathematical algorithms not commonly found in mainstream libraries.
algorithms cryptography linear-algebra math matrix rust
Last synced: 17 Mar 2026
https://github.com/abdulsmapara/constant-size-group-signatures
Implementation of the research paper - http://crypto.stanford.edu/~xb/pkc07/fullgrpsigs.pdf
constant-size-group-signatures cryptography number-theory
Last synced: 11 Jun 2026
https://github.com/north9-labs/seam
Post-quantum encrypted transport protocol — UDP, multi-stream, built-in FEC, Noise_XX + ML-KEM-768
cryptography forward-error-correction ml-kem networking post-quantum protocol rust udp
Last synced: 11 Jun 2026
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/ggsmith842/crypto-hacks
CTF challenges from the Cryptohack Cryptography course.
Last synced: 10 Feb 2026
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/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/arunanshub/webbin
WebBin: The Based Pastebin
compression cryptography flask pastebin security sqlalchemy
Last synced: 11 Feb 2026
https://github.com/henryhale/enigma
🔐 A basic simulation of the Enigma machine
cipher cryptography decryption encryption enigma enigma-machine enigma-simulator henryhale ts turing
Last synced: 19 Jul 2025
https://github.com/floatpane/go-openpgp-card-hl
High-level YubiKey OpenPGP signer/decryptor
code-signing cryptography digital-signature ed25519 encryption git-signing gnupg go go-library golang gpg hardware-token nitrokey openpgp openpgp-card pcsc pgp rsa smartcard yubikey
Last synced: 22 Jun 2026
https://github.com/arachsys/ssh-x25519
Map ssh-ed25519 keys into x25519 keys
crypto cryptography ed25519 golang ssh x25519
Last synced: 14 Jan 2026
https://github.com/exploide/ulpcrypt
Implementation of the U-LP Cryptosystem
cryptography cryptography-library
Last synced: 06 Sep 2025
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/fullscreen-triangle/mzekezeke
Zero-cost multi-dimensional environmental cryptography framework that transforms communication security from computational complexity to physics-based guarantees
cryptography encryption-algorithms encryption-decryption
Last synced: 12 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/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/ellipticsecure/signer-example
This example demonstrates how to use a MIRkey or eHSM Hardware Security Module to sign a PDF file.
cryptography hsm java javafx pdf signing
Last synced: 27 Apr 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/bwesterb/go-exptable
Speed up modular exponentiation of Go's big.Int's using precomputed tables
cryptography go golang modular-exponentiation precomputed-table
Last synced: 17 Oct 2025
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/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/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/onlyf0ur/pq-msg
Pure Rust abstractions for higher-level implementations of post-quantum cryptography in secure messaging protocols.
cryptography encryption key-exchange messaging nist-pqc post-quantum-cryptography
Last synced: 23 Feb 2026
https://github.com/symphonyprotocol/p2p
Decentralized P2P networking framework
cryptography golang network p2p
Last synced: 14 Jan 2026
https://github.com/james-honeybadger/zayfer_vault
Full-featured encryption/decryption suite — AES-256-GCM, ChaCha20-Poly1305, RSA, Ed25519, X25519, OpenPGP | Rust core + Python bindings | CLI, GUI (PySide6), Web (FastAPI)
aes-256-gcm chacha20-poly1305 cli cryptography decryption ed25519 encryption fastapi keystore openpgp pyo3 pyside6 python rsa rust
Last synced: 28 Apr 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/filiprokita/tosha256
This is a Python script that prompts the user to enter a string of text and then calculates its SHA-256 hash using the hashlib library. The resulting hash is then printed to the console.
cryptography data-integrity hash hashing python security sha256 tosha
Last synced: 24 Mar 2025
https://github.com/yawning/edwards25519-extra
Go ed25519 extras (mirror)
crypto cryptography ed25519 h2c vrf
Last synced: 11 Mar 2025
https://github.com/abuzaidk1234/hybridtextfileencryptor
A lightweight and secure Python-based hybrid encryption tool using AES for content encryption and RSA for key protection — ideal for safely storing and transmitting sensitive text files.
aes cryptography cybersecurity encryption encryption-decryption python rsa text-encryption
Last synced: 09 Apr 2025
https://github.com/lakshagg/insane-encrypt
A simple 256 byte encryption algorithm. feedback needed
c cryptography encryption encryption-algorithms encryption-decryption symmetric-encryption symmetric-key-cryptography
Last synced: 19 Jun 2026
https://github.com/heyIsaac/TaskManager
😎🔎 A complete CRUD API for task management, an advanced level challenge proposed by DIO.me in its bootcamp with Avanade, currently has authentication with JWT token and much more (✿◕‿◕✿)
authentication-backend bootcamp-project consuming-api cryptography csharp dotnet entity-framework-core git jwt-authentication microsoft-identity minimal-api refit
Last synced: 24 Feb 2026
https://github.com/AravindanAppu/Notcoin-crypto-bot
airdrop-notcoin bitcoin btc crypto cryptocurrencies cryptocurrency cryptography ethereum getgems nft notcoin notcoin-airdrop notcoin-bot notcoin-bot-2024 notcoin-guide notcoin-strategy notcoin-telegram notcoin-token ton toncoin
Last synced: 11 Mar 2025
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/waridrox/password-manager
Encrypted password manager to store website passwords.
cryptography password-manager reactjs
Last synced: 17 Apr 2026
https://github.com/suprim-corp/kit-backend-base-java
Reusable Java backend toolkit — UUID, JSON, crypto, exception, web & gRPC (dev.suprim)
backend cryptography exception-handling grpc java java-library json maven spring-boot utilities
Last synced: 24 Jun 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/berkbavas/cryptostuff
Cryptographic algorithms and attacks in Java 8
cbc-mode close-primes cryptanalysis cryptography fermat-factorization four-square miller-rabin-test monoalphabetic-cipher pkcs1 playfair-cipher rsa rsa-pkcs1-padding vigenere-cipher
Last synced: 21 Jun 2026
https://github.com/scarlet-oni/ransomware
A simple ransomware program that encrypts just one file
cryptography cyber-security cybersecurity openssl python python3 ransomware
Last synced: 15 Jun 2025
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/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/rstacks/downunderctf2024-writeup
Writeups for the challenges I attempted at DownUnderCTF 2024.
cryptography ctf ctf-writeups forensics osint reverse-engineering web-exploitation
Last synced: 13 Apr 2026
https://github.com/saiteja-talluri/cryptosuite-application
A small cryptosuite application written in C++
cryptography miller-rabin rsa-encryption
Last synced: 19 Apr 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.
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/daimdn/cryptography-messageencryption
Brief tutorial of Cryptography. Based on previous solutions. Can be used along for sending messages
Last synced: 06 Sep 2025
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/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/prasunchakra/EncipherX
A simple Django-based Caesar Cipher application demonstrating basic text encryption and decryption. Currently for learning fundamental cryptographic concepts, experimenting with shift-based ciphers, and later on building upon for more advanced encryption methods.
cipher cryptography django python
Last synced: 16 Sep 2025
https://github.com/telkomdev/c-crypsi
A Header only Custom crypto utility for C/C++ based on Openssl Crypto Library to make life easier
aes c cryptography digest header-only openssl
Last synced: 05 Jun 2026
https://github.com/teawithsand/crypka
Crypka makes writting apps that use cryptography easier
crypto cryptography encryption encryption-decryption-library
Last synced: 23 Apr 2026
https://github.com/soenneker/soenneker.cryptography.ed25519
A lightweight C# library providing utilities for verifying Ed25519 digital signatures using public keys
cryptography csharp dotnet ed25519 ed25519util signing util verification verify
Last synced: 24 Apr 2026
https://github.com/darkzarich/local-encrypt-tool
Node.js utility for encrypting and decrypting sensitive data locally. Uses AES-256-GCM encryption with a key derived from your provided password using PBKDF2.
Last synced: 12 Apr 2026
https://github.com/tuokri/rs2-misc-tools-notes
Various RS2 modding related notes and code snippets.
cryptography reverse-engineering rising-storm-2-vietnam
Last synced: 18 Jan 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/edycutjong/synod
🏛️ Atomic multi-agent transactional orchestration engine running inside Intel TDX TEE boundary with 100% cryptographic rollback guarantees, powered by Terminal 3 ADK.
cryptography governance hackathon intel-tdx multi-agent nextjs react secp256k1 tee terminal3 wasm
Last synced: 21 Jun 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/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/edycutjong/epoch
⏳ Verifiable, privacy-blind inheritance and continuity orchestration inside hardware-isolated enclaves.
cryptography dead-mans-switch intel-tdx nextjs rust tee webassembly
Last synced: 21 Jun 2026
https://github.com/fstrahij/cryptography
Project on Faculty of Organization and Informatics in Varaždin on course Operationg systems 2.
aes cryptography python sha256
Last synced: 06 Jun 2026
https://github.com/tykoth/cryptopsy
Encryption/Decryption tests.
command-line cryptography cryptojs testing
Last synced: 26 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/glinford/oqs.js
Node.js Bindings for liboqs
cryptography nodejs postquantum
Last synced: 28 Apr 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/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/egorgvo/sberbank_callback_async_cryptography
Python implementation of Sberbank signature verification using async cryptography
cryptography sberbank signature-verification
Last synced: 11 Mar 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/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/samuelgodoy/arca
ARCA - Cofre de Segredos ou Credenciais
cosmocc cryptography encryption password secret vault ziglang
Last synced: 29 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/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/baha2rm98/crypto_note
Developed by : Baha2rM98 and AshkanAbd
Last synced: 02 May 2026
https://github.com/k2/stylometrics
Stylometric Stenography LLM Generation Attribution DRM/DLP
content-attribution content-security content-verification cryptography data-embedding data-loss-prevention digital-rights-management digital-watermarking fingerprinting information-security linguistic-steganography metadata plausible-deniability steganography structural-encoding stylometry text-analysis typescript zero-width-characters
Last synced: 09 Apr 2025
https://github.com/ilovenooodles/classic-crypto
Web based Classic cryptography
Last synced: 02 May 2026
https://github.com/bwesterb/germain
Counts safe primes
cryptography estimate germain safe-prime
Last synced: 31 Mar 2025
https://github.com/jay4codes/skyjack-djss4ds
A Data Science Treasure Hunt
cryptography data-science firebase reactjs
Last synced: 04 May 2026
https://github.com/kaalpanikh/file-integrity-checker
A Python-based file integrity checker using SHA-256 to detect unauthorized modifications and ensure data security
cli-tool cryptography cybersecurity file-integrity file-monitoring hash-verification python security sha256 yaml
Last synced: 04 May 2026
https://github.com/fredrikaugust/wasm-bsgs
Baby-Step Giant-Step Discrete Logarithm Problem Solver in WebAssembly (Written in Rust)
cryptography discrete-logarithm rust wasm wasm-bindgen
Last synced: 04 May 2026
https://github.com/systemslibrarian/crypto-lab-webauthn
rowser-based WebAuthn/Passkeys demo — real ECDSA P-256 credential keys, challenge-response assertions signing origin+challenge+counter, phishing/replay/clone attacks all blocked. The private key never leaves the authenticator
authentication challenge-response crypto-lab cryptography ctap ecdsa fido2 p256 passkeys passwordless phishing-resistant webauthn
Last synced: 09 Jun 2026
