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/dpetrosy/encryptor-decryptor
My small project encryptor / decryptor written in Python.
algorithm console-application cryptography decoder encoder encoder-decoder encryption-decryption python python3
Last synced: 06 Oct 2025
https://github.com/hrichharms/rc4
RC4 implemented in C
cryptography rc4 rc4-algorithm rc4-cipher rc4-encryption
Last synced: 08 Apr 2025
https://github.com/shaina-gh/dss
Java implementation of the Digital Signature Standard (DSS) for message integrity and authenticity verification.
cryptography cryptography-algorithms digital-signature-algorithm digital-signature-authentication dss java signature-verification
Last synced: 22 Apr 2025
https://github.com/jcbritobr/gocrypto-study
This study is based on Golang Cryptography for Depeloper book and its examples.
Last synced: 06 Oct 2025
https://github.com/ilyakotsar/imagecrypt
Image encryption with a password using rail fence cipher
cryptography encryption image-encryption rail-fence-cipher
Last synced: 09 Aug 2025
https://github.com/marenkeneshov/marintxtcrypt
Приложение позволяет шифровать введённый текст. Не используйте это приложение в незаконных целях! The application allows you to encrypt the entered text. Do not use this app for illegal purposes! Бұл қосымша енгізілген мәтінді шифрлауға мүмкіндік береді. Бұл қосымшаны заңсыз мақсаттарда пайдаланбаңыз!
cryptography cybersecurity cybersecurity-tools cypher
Last synced: 18 Jan 2026
https://github.com/simplito/privmx-bridge-docker
Docker Compose for PrivMX Bridge.
chat communication cryptography data-transfer decryption e2ee end-to-end-encryption files messages messaging privacy privacy-protection private privmx secure security simplito storage thread zero-knowledge
Last synced: 06 Oct 2025
https://github.com/danielost/ecpoint-wrappers
Convenient wrappers for operations on elliptic curves in Golang.
cryptography ecc elliptic-curves
Last synced: 06 Oct 2025
https://github.com/ujangbedog/dpq-chat
A simple, secure peer-to-peer chat app built with Rust. Runs directly in the terminal with end-to-end encryption, post-quantum security (Kyber & Dilithium), and no central server.
chat cli cryptography p2p p2p-chat rust secure terminal terminal-app terminal-chat
Last synced: 06 Oct 2025
https://github.com/robertmcatee/saigo
a simple encryption toolkit written in Go
Last synced: 14 Jan 2026
https://github.com/fzed51/spicy-mash
Classe de cryptage et décryptage simplifiée se basant sur OpenSSL
cryptography openssl php simple
Last synced: 14 Jan 2026
https://github.com/gauravg-20/elliptics
cryptography encryption-algorithms encryption-decryption
Last synced: 14 Aug 2025
https://github.com/endurio/ndrd
Endurio Daemon
blockchain cryptocurrency cryptography currency decentralized distributed payment stablecoin
Last synced: 14 Jan 2026
https://github.com/velascort/cryptography-practice
Practice in Python using cryptography
Last synced: 07 Oct 2025
https://github.com/simplito/privmx-endpoint-swift-extra
Extension wrapper for PrivMX Endpoint Swift.
communication cryptography data-transfer decryption e2ee end-to-end-encryption files messages messaging privacy privacy-protection private privmx secure simplito storage swift thread zero-knowledge
Last synced: 29 May 2026
https://github.com/vobst/ctf-nsa_backdoor
Solution of picoCTF 2022 NSA backdoor challenge.
backdoor cryptography ctf-writeups nsa picoctf
Last synced: 07 Oct 2025
https://github.com/andezion/retromessenger
ciphers cpp cryptography messenger retro wxwidgets
Last synced: 16 Jan 2026
https://github.com/defeo/hhs-keyex
Research paper on improving the Hard Homogeneous Spaces key exchange protocol (by Couveignes and Rostovtsev-Stolbunov)
asymmetric-cryptography cryptography elliptic-curves isogenies key-exchange-protocol research-paper
Last synced: 11 Mar 2026
https://github.com/t-bast/echalotte
Research on various onion encryption schemes.
cryptography onion onion-routing
Last synced: 12 May 2026
https://github.com/fboulnois/ring-pkae-example
An example of public key authenticated encryption in Rust
aead crypto cryptography ecdh elliptic-curve-cryptography public-key-cryptography public-key-encryption rust
Last synced: 01 Jul 2025
https://github.com/filiprokita/goodpassword
GOOODPASSWORD is a password generator that uses algorithms to create strong, random passwords. With customizable length and complexity options, it helps users generate secure passwords that meet even the most stringent security requirements.
cryptography password password-generator python python3 randomness security simple
Last synced: 24 Mar 2025
https://github.com/soyart/gfc
stable branch of gfc, a small go file encryption utility using AES 256 and PBKDF2
aes crypto cryptography encryption rsa
Last synced: 14 Jan 2026
https://github.com/samhaque/hashgame
Fun little hash game to test players information theory skills
bcrypt cryptography flask mongodb python
Last synced: 10 May 2026
https://github.com/ndpar/spring-crypto-demo
Examples of crypto operations in Kotlin and Spring
bouncycastle cryptography openssl spring
Last synced: 12 Mar 2026
https://github.com/ben854719/autonomous-health-monitoring-emergency-response
This app uses Bluetooth to link a worker’s smartphone with a supervisor’s laptop for live health monitoring. PySyft handles secure biometric authentication, while machine learning detects injuries and visualizes them on a dashboard. Agentic AI responds to critical events by triggering emergency protocols and contacting 911 with location data.
agentic-ai bluetooth cryptography cybersecurity error-handling gemini langgraph machine-learning-algorithms matplotlib mcpserver nltk numpy pysyft python pytorch socket tcp tenseal
Last synced: 28 Apr 2026
https://github.com/incertia/crypto-primer
intro to crypto given to my coworkers at AIS
algebra algebraic-structures cryptography dh diffie-hellman ecc ecdh rsa
Last synced: 18 Jan 2026
https://github.com/kzorin52/nistp256
Rust dylib wrapper to RustCrypto/elliptic-curves [only keypair]
crypto cryptography elliptic-curves keypairs nistp256 perfomance secp256r1
Last synced: 08 Oct 2025
https://github.com/mahfuzurrahman98/telechipher
This is a system developed as an assignment of a cyber-security course capable of transferring files through a secure communication channel with the support of encrypting data on the sender end and decryption on the receiver end.
aes-encryption chipher cryptography cybersecurity encryption-decryption pysftp rot13 sftp tkinter-gui
Last synced: 08 Oct 2025
https://github.com/pillardevelopment/go_chain
blockchain-network cpp cryptography golang google secp256k1 tendermint-consensus
Last synced: 14 Jan 2026
https://github.com/uofsc-fall-2022-math-587-001/homework8
A bit about distribution of primes and Pollard's p-1 test
cryptography go latex math pollard-p-1 prime-numbers
Last synced: 29 Apr 2026
https://github.com/jonath-z/go-vigenere-cipher
Vigenere Cipher algorithm written in go
cipher-algorithms cryptography go golang vigenere-cipher-algorithm
Last synced: 01 Apr 2025
https://github.com/yashkarthik/hash_crakking
Hash texts entered.
cryptography hashing python python-3
Last synced: 10 Mar 2026
https://github.com/joe-degs/digcoin
How i think bitcoin works in a way... I don't really know what I'm doing. But it feels good.
cryptocurrency cryptography distributed-systems golang
Last synced: 11 Jun 2025
https://github.com/fabiocolacio/crypt
Easily encrypt and decrypt files from cli or scripts
Last synced: 09 Oct 2025
https://github.com/natharyan/secret-sharing-arithmetic-operations
Shamir's secret sharing to generate shares for arithmetic operations over two secrets.
cryptography cryptography-project secret-sharing shamir-secret-sharing
Last synced: 09 Oct 2025
https://github.com/toniomacaronio/keccak-rust
Keccak implementation in Rust
crypto cryptography keccak rust sha3
Last synced: 24 Mar 2025
https://github.com/codyverse/basex64
A simple cryptographic tool for storing data in distributed version control systems like Git.
ascii-encryption ascii-encryption-python base64 base64-encryption cipher cryptography cypher encryption encryption-decryption python python-3 python-cypher python-encryption python-script python3
Last synced: 04 Feb 2026
https://github.com/thesupercd/rainbow_table_builder
A high performance CUDA-based GPU accelerated Rainbow-Table maker, written in C++ without any external libraries or dependencies needed.
cpp cryptography cuda hash-table hashing parallel-processing rainbow-table sha3 sha3-512 uuid
Last synced: 12 May 2026
https://github.com/cythral/identity-certificates
Signing Certificate Rotation Service for Brighid Identity.
Last synced: 14 Apr 2026
https://github.com/anonputraid/zetcipher
Lightweight and secure text encryption tool built for developers and security enthusiasts.
cryptography data-encryption encryption security
Last synced: 13 Jan 2026
https://github.com/winstxnhdw/tisc-2021
Python code for The InfoSecurity Challenge 2021.
cryptography cybersecurity tisc2021
Last synced: 30 Mar 2025
https://github.com/oklein1/cryptography-clojure
Clojure implementation of ciphers
cipher-algorithms clojure cryptography
Last synced: 10 Oct 2025
https://github.com/skygenesisenterprise/crux-256
CRUX-256: Experimental symmetric block cipher combining SPN and ARX architectures
aes-256 api-service cryptography database dns linux macos mail rust windows
Last synced: 14 Apr 2026
https://github.com/tigeryant/cryptopals-challenges
Solutions to the cryptopals cryptography challenges
coding-challenges cplusplus cryptography cryptopals
Last synced: 16 Jun 2026
https://github.com/pranjalco/caesar-cipher-simple
A Python program that implements the Caesar Cipher for encoding and decoding messages. Users can input text, choose shift numbers, and decide whether to encode or decode. Includes a user-friendly loop for multiple operations in one run.
algorithms cipher console-application cryptography python-programming security
Last synced: 30 Mar 2025
https://github.com/shubhamv108/crypto-utils
A simple crypto util in Java.
aes crypto-utils cryptography cryptography-utilities hashing hotp otp rsa totp
Last synced: 24 Mar 2025
https://github.com/losthopes/secured-accounts-lab
Lab for Security of programs and Data course
Last synced: 14 Mar 2025
https://github.com/phenomsg/password-manager
It is a Python password manager using Fernet encryption. It securely stores and manages passwords, ensuring confidentiality and convenience for users.
cryptography decryption encryption fernet python
Last synced: 28 Dec 2025
https://github.com/yashkarthik/zipfile_passw_cracker
Crack the password of a zip file from a wordlist.
cryptography password-cracker python zipfile
Last synced: 10 Oct 2025
https://github.com/midnight-wonderer/embedded-xoodyak
Lightweight, zero-allocation Xoodyak cryptographic scheme in C for microcontrollers.
c-library cortex-m cryptography embedded esp8266 microcontroller xoodoo xoodyak
Last synced: 28 May 2026
https://github.com/anonymouse64/crypto_test_golang
Crypto testing utility for Golang implementations
Last synced: 14 Jan 2026
https://github.com/midnight-wonderer/xoodyak-rb
A blazing fast Ruby wrapper for the Xoodyak cryptographic scheme. Supports hashing and AEAD encryption.
aead cipher cryptography digest gem hash lightweight-cryptography ruby sponge-construction xoodyak
Last synced: 28 May 2026
https://github.com/tigeryant/merkle-tree
Produces a merkle root from a set of user defined strings
binary-hash-tree cryptography merkle-tree
Last synced: 11 Oct 2025
https://github.com/frankiefab100/caesar-cipher-cryptography
Caesar cipher - Task by Web3Bridge
caesar-cipher cipher cryptography decode decryption encode encryption
Last synced: 21 Jul 2025
https://github.com/rudradcruze/cryptography-algorithm-java
Some algorithm of network cryptography
algorithms cryptography java network network-security substitution
Last synced: 30 Jul 2025
https://github.com/lihongjie0209/sm-py-bc
SM2/SM3/SM4 implementation in Python based on Bouncy Castle - Pure Python cryptography library
bouncy-castle chinese-crypto cryptography gm-crypto pure-python python sm2 sm3 sm4 zero-dependencies
Last synced: 13 Jan 2026
https://github.com/nicolocarcagni/swallet
A modern, non-custodial desktop wallet for the SOLE cryptocurrency, built with Python, GTK4, and libadwaita.
cryptography gtk4 gtk4-python3 unisalento wallet
Last synced: 10 Mar 2026
https://github.com/quintessence-sec/pgp-mfa
proof-of-concept to use pgp as a MFA method
2fa benchmark cryptography golang gpg gpg-encryption mfa
Last synced: 03 Sep 2025
https://github.com/achnouri/ctf-challenges-write-ups
This repository is a collection of detailed write-ups for CTF challenges/machines/... that i have solved across different cybersecurity training platforms
capture-the-flag cryptography ctf ctf-challenges ctf-writeups cybersecurity hacking hacking-tools hackthebox offensive-security osint pentesting red-team reversing scanning security testing tryhackme vulnerabilities web
Last synced: 18 Feb 2026
https://github.com/lasse-tom-lang/python-cryptographie
Program for en- and decrypt messages
cryptography pysimplegui python steganography
Last synced: 31 Mar 2025
https://github.com/raadhshenshahhaseeb/keyless
[WIP] Encode - Explore Expander Bootcamp - Keyless Hackathon
Last synced: 11 Oct 2025
https://github.com/sahedulislamrony/anonymous
A secure and user-friendly platform for sending anonymous messages with real-time database integration, powered by Firebase and built using ReactJS, Sass, and Vite.
cryptography css3 firebase firebase-auth firebase-realtime-database javascript netlify react-router-dom reactjs sass vite
Last synced: 14 Apr 2026
https://github.com/im-a-kookie/cryptographic-aes-server
Simple manual implementation of multithreaded HTTP server via HTTPListenerContext, implementing custom AES virtual streams to provide large files securely.
aes-encryption cryptography http-server multithreaded-server stream-processing
Last synced: 11 Oct 2025
https://github.com/robertoaleman/ra-ultimate-cipher-analyzer
RA Ultimate Cipher Analyzer is a web-based tool designed to analyze encrypted files and suggest the encryption algorithm used based on statistical properties and known patterns.
aes aes-128 aes-256 aes-encryption algorithms code-analysis cryptography cypher rsa rsa-cryptography rsa-decryption rsa-encryption
Last synced: 18 Feb 2026
https://github.com/rub-nds/ssh-strict-kex-violations-state-learning-artifacts
Artifacts for the paper "Finding SSH Strict Key Exchange Violations by State Learning", accepted at the ACM Conference on Computer and Communications Security (CCS) 2025.
artifacts attack cryptography cve-2025-32433 ssh statelearning strict-kex vulnerability
Last synced: 03 Sep 2025
https://github.com/fordcois/cryptography
This repository is a documentation of my exploration of cryptography, focusing on creating and cracking ciphers
Last synced: 02 Jul 2025
https://github.com/bastipnt/passmgr
Zero-knowledge password manager — cross-platform web + mobile, TypeScript monorepo. Early prototype.
bun cryptography drizzle-orm e2ee end-to-end-encryption expo fastify monorepo opaque pake password-manager react react-native self-hosted tailwindcss trpc turborepo typescript zero-knowledge
Last synced: 24 Jun 2026
https://github.com/xorbkpt/encryption-aes-r-pi-pico
TuM Institute for Advanced Study, Advanced Computation, Cryptography: Post Doc Bucket: 1
beginner computer-science cryptography encryption rasberry-pi-pico
Last synced: 24 Mar 2025
https://github.com/bmoneill/enigma
Enigma machine simulator and Bombe
cipher cli cryptography enigma enigma-machine history
Last synced: 12 Oct 2025
https://github.com/newyaroslav/siphash-cpp
SipHash Headers Only C ++ Library
c-plus-plus cpp11 cpp17 cryptographic-hash-functions cryptography hash library pseudorandom-functions siphash
Last synced: 12 Oct 2025
https://github.com/dan149/noice
OTP (one-time pad) encryption CLI tool.
blazingly-fast cipher cli cryptography encryption encryption-decryption one-time-pad open-source otp zig ziglang
Last synced: 24 Mar 2025
https://github.com/abdulbasit110/key-logger
An educational Python keylogger that captures keystrokes and securely encrypts logs using `pynput` and `cryptography`. For educational use only.
cryptography cybersecurity encryption keylogger pynput
Last synced: 13 Oct 2025
https://github.com/orlowskilp/des-example
DES implementation in Rust
cryptography rust rust-lang symmetric-cryptography
Last synced: 06 Jul 2025
https://github.com/oglinuk/sbh
A stateless password manager.
cryptography go hash password password-manager security
Last synced: 13 Oct 2025
https://github.com/parisaalizadeh2003/cryptography-tool
A Python-based tool for file encryption and decryption using a custom cipher and wxPython for GUI.
cryptography encription python security-tools wxpython
Last synced: 12 Apr 2025
https://github.com/vladistan/codebreaker-2018-explore
Notebooks to poke around the blockchain for codebreaker 2018 challenge walkthrough
blockchain codebreaker-challenge cryptocurrency cryptography ctf-challenges ctf-writeups cybersecurity reverse-engineering security walkthrough
Last synced: 13 Oct 2025
https://github.com/irfan-manitechnest/sodium-crypto
Modern PHP 8.3+ encryption library using libsodium – secure symmetric & asymmetric (Fidelius-style) encryption, signing, and password hashing.
cryptography fidelius libsodium php
Last synced: 13 Jan 2026
https://github.com/sucho6996/shadowsend-a-secure-communication-platform
This is a Java Spring boot and JS React project where sender will send a message which will be encrypted and embedded in an Image provided by the sender and the receiver will be able to see those images with sender's number in his/her inbox . Once the receiver will read the message it'll be deleted automatically for a traceless conversation.
cryptography eureka-discovery-client eureka-server feign-client git github java jpa jwt-authentication jwt-token messaging microservices open-feign platform security spring-boot spring-security steganography
Last synced: 01 Mar 2026
https://github.com/johanns/ref-secure-share
SecureShare is a tutorial and reference implementation of a one-time-use message sharing web-app, developed using Next.JS 14, TypeScript, Prisma, and styled with Tailwind CSS
cryptography next tailwindcss tutorial typescript webcrypto
Last synced: 05 Feb 2026
https://github.com/argenox/noxtls-rs
NoxTLS Rust is a lightweight, high-performance embedded TLS library written in Rust and designed for secure communication in resource-constrained systems. Built for efficiency, portability, and modern security standards.
cipher-algorithms cipher-suit cryptography cryptography-api dtls openssl-alternative rust rust-library tls tls12 tls13
Last synced: 28 May 2026
https://github.com/giatraskon/overthewire-wargames-solutions
Solutions for OverTheWire wargames, each wargame has its own directory containing Bash scripts for each level's commands.
bash-scripting binary-exploitation capture-the-flag cryptography cybersecurity ethical-hacking overthewire overthewire-bandit overthewire-behemoth overthewire-krypton overthewire-leviathan overthewire-maze overthewire-narnia overthewire-natas overthewire-solution overthewire-utumno penetration-testing security-challenges wargames web-security
Last synced: 31 Mar 2025
https://github.com/oxarbitrage/sinsemilla
Sinsemilla hash function haskell implementation
crypto cryptography hash-function sinsemilla
Last synced: 05 Feb 2026
https://github.com/t-bast/macaroons
Macaroons are tastier cookies (and french!)
Last synced: 14 May 2026
https://github.com/acmo0/lfsr-fibo
Efficient pure Rust implementation of LFSR in Fibonacci representation
cryptography lfsr lightweight-cryptography random-generation
Last synced: 14 Oct 2025
https://github.com/sajad-net/handybar
Base64 encoder and decoder extension
base64 base64-decoding base64-encoding chrome-extension cryptography css html javascript javascript-base64 javascript-cryptography json webbrowser-extension
Last synced: 11 Apr 2026
https://github.com/denatajp/caesar-chiper
Implementation of Caesar Chiper in encrypts and decrypts text by shifting letters by a user-defined value. It takes input text and a shift value, applies the shift to encrypt, and reverses the shift to decrypt. The program demonstrates basic encryption and decryption using this simple technique.
caesar-cipher chiper cryptography
Last synced: 26 Aug 2025
https://github.com/dubniczky/trustless-authentication
Secure authentication protocol without sending or storing the password
authentication cryptography password protocol
Last synced: 31 Mar 2025
https://github.com/a3h1nt/python-meets-cryptography
Python code snippets for modern encryption algorithms.
Last synced: 03 Sep 2025
https://github.com/athanclark/purescript-sjcl
Bindings to the Stanford JavaScript Crypto Library
browser cryptography purescript sjcl
Last synced: 24 Jan 2026
https://github.com/magical/spritz
Spritz cryptographic sponge(-like) function, hash, and stream cipher in Go
Last synced: 14 Oct 2025
https://github.com/levongh/md5
The MD5 algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities. It can still be used as a checksum to verify data integrity, but only against unintentional corruption.
Last synced: 03 Apr 2025
https://github.com/ahmatfauzy/pengaduan-app
cryptography dekstop-app dotenv-java generic gson i18n java jbcrypt mongodb serialization thread
Last synced: 14 May 2026
