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: 2026-07-01 00:06:48 UTC
JSON Representation

https://github.com/valohai/openssh-key

Tools to deal with OpenSSH2 (RFC4716) keys in Python

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Last synced: 02 Aug 2025

https://github.com/remiblancher/post-quantum-pki

Quantum-Safe X.509 PKI with PQC & Hybrid Certificates in Go

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Last synced: 27 Jan 2026

https://github.com/unknnownnn/ctf-swiss-army-knife

An All in One program for solving CTF challenges

cryptography ctf ctf-tools cyber-forensics cybersecurity-tools hexdump-viewer pyqt6 python steganography windows

Last synced: 31 Jul 2025

https://github.com/hsbc/encryption-helper-python

A Python CLI application for generating RSA public and private key pairs.

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Last synced: 14 Jul 2025

https://github.com/vatshayan/hiring

Hiring for Data Science, Cryptography, Machine Learning and Artificial Intelligence.

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Last synced: 09 Mar 2026

https://github.com/elliotwutingfeng/bitwarden_backup_decryptor

🔓 CLI tool to decrypt backup files exported from Bitwarden. This application is not affiliated with Bitwarden, Inc.

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Last synced: 09 Apr 2026

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

Simple program to verify signature created by RSA cryptography algorithm

cryptography ed25519 rsa

Last synced: 12 Apr 2025

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

BlumBlumSnub Generator - Random Bit Array with 4 prepared tests

bbs cryptography generator

Last synced: 07 Sep 2025

https://github.com/slayernominee/cryptographic-algorithms

just some cryptographic algorithms to learn it

cryptography python

Last synced: 06 Jul 2025

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

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

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Last synced: 09 Apr 2026

https://github.com/thyeem/longshot

Fast Brute-force search using parallelism

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Last synced: 06 May 2025

https://github.com/rohitanwar/cryptography

An exploration of various cryptographic functions (and related stuuf)

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Last synced: 21 Aug 2025

https://github.com/jamestaylr/aes

Implementation of AES and associated cryptographic helper functions in Crystal

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Last synced: 24 May 2026

https://github.com/arihantbansal/cybersec-python

Cybersec/CTF practice problems solved in Python

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Last synced: 02 Aug 2025

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

Fast cryptographic hash functions for Julia

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Last synced: 06 Apr 2026

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

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

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Last synced: 10 Apr 2026

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

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

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Last synced: 09 Feb 2026

https://github.com/chakshugupta13/local-collision-differential-attack-on-reduced-sha-256-upto-24-rounds

This repository contains C and/or C++ implementations for finding Local Collision Conforming Message Pairs through Differential Attack on Reduced-Round SHA-256 up to 24 Rounds. Also, this repository contains the C++ implementations of SHA-256, SHA-512 and SHA-384.

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Last synced: 11 Apr 2025

https://github.com/nhussein11/merkle-tree

Rust implementation and explanation of the Merkle Tree structure

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Last synced: 29 Oct 2025

https://github.com/zaidmukaddam/securitymobileapp

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

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Last synced: 18 Jun 2025

https://github.com/drwheelicus/encoderize

Turn your text into a cryptographic masterpiece

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Last synced: 30 Apr 2025

https://github.com/rajput-hemant/cryptography

A handy Crypto CLI for exploring cryptographic algorithms learned in university. Dive into the world of cryptography with ease! 🔐✨

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Last synced: 19 May 2026

https://github.com/supermarcel10/cryptographicanalysisofsha2

Comparative benchmark of SMT solver effectiveness in cryptographic hash collision discovery for SHA-2 algorithms.

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Last synced: 30 Jul 2025

https://github.com/embetrix/meta-satobox

Satobox is an open-source, Yocto-based, privacy-focused and secure bitcoin full node solution designed for embedded linux devices.

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Last synced: 01 Nov 2025

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

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

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Last synced: 23 Jul 2025

https://github.com/circa10a/l33tcrypto

Cryptography for the most l33t haxx0rs

cryptography encoder-decoder hacktoberfest

Last synced: 02 Oct 2025

https://github.com/h5law/vinegar

A Golang library for creating and using Vigenere Ciphers

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Last synced: 17 Mar 2025

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

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

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Last synced: 06 Apr 2025

https://github.com/ishanoshada/lockix

A secure file encryption and decryption tool

cryptography encryption files security

Last synced: 07 Mar 2026

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

OpenSSL elliptic curve wrapper for CryptoGroups

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Last synced: 06 Apr 2026

https://github.com/humanjavaenterprises/nostr-nsec-seedphrase

The nostr-nsec-seedphrase repository offers a TypeScript library that converts Nostr nsec keys into mnemonic seed phrases, enhancing the readability and management of keys within Nostr applications. This approach mirrors Bitcoin's use of seed phrases, emphasizing the importance of secure storage and careful handling of these keys.

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Last synced: 31 Aug 2025

https://github.com/crownedgrouse/preach

[WIP] Phi base Random Encoder Aimed for Cryptography Hardening

cryptography obfuscation rust

Last synced: 06 Apr 2025

https://github.com/justscott/listcrypt

Symmetric cryptographic algorithm built with python3

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Last synced: 21 Jun 2026

https://github.com/mttbernardini/mbencrypter

:closed_lock_with_key: This program will help you encrypting or decrypting some data or a file using MB's algorithm. NB: this project has been supeseded by https://github.com/mttbernardini/mbc

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Last synced: 26 Mar 2025

https://github.com/BotsUniverse/cryptrooper

Cryptrooper is a module that can encode and decode your text with a given key.

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Last synced: 19 Aug 2025

https://github.com/alekseibalan/usfs

USFS - unsigned short file system

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Last synced: 15 May 2026

https://github.com/ecies/py-demo

A simple fastapi eciespy web backend demo

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Last synced: 12 Apr 2025

https://github.com/cartory/encoderr-web

🔐 Crypto Final Project - Encoderr

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Last synced: 11 May 2026

https://github.com/denselance/hight-python

HIGHT block cipher implementation in Python3 based on original paper by Hong et al. Includes the encryption and decryption functions for HIGHT.

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Last synced: 31 Dec 2025

https://github.com/dbstratta/naive-crypto

Very naive implementations of various cryptosystems written in Haskell

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Last synced: 02 Aug 2025

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

Solving substitution ciphers using Markov Chain Monte Carlo (MCMC)

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Last synced: 03 Mar 2025

https://github.com/daflh/deriving

Derives address and private key from mnemonic phrase for Bitcoin and other altcoins

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Last synced: 19 May 2026

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

ISCC Signing & Verification

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Last synced: 09 Apr 2026

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

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

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Last synced: 17 May 2026

https://github.com/cuhsat/epiphyte

(Ab)using TinyURL.com as a key/value storage for hidden and encrypted message threads.

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Last synced: 12 Aug 2025

https://github.com/jscarle/cryptoextensions.net

Useful Cryptography Extensions

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Last synced: 16 Aug 2025

https://github.com/churro/avr-aes128-groestl256

Efficient AES-128 & Grøstl-256 Implementations for the AVR 8-bit Microcontroller Architecture

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Last synced: 10 Apr 2025

https://github.com/cuhsat/fx

A strictly experimental stream cipher in ANSI C.

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Last synced: 29 Mar 2025

https://github.com/ergl/sss

Basic Shamir's Secret Sharing

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Last synced: 06 Feb 2026

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

Simple RSA implementation using GMP

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Last synced: 14 May 2025

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

Simple Hash Cracker

cryptography python

Last synced: 28 Mar 2025

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

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

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Last synced: 17 May 2026

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

All about Cryptography tools & techniques. Python implementation.

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Last synced: 16 Jun 2025

https://github.com/starone01/phrasenux

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

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Last synced: 30 Mar 2025

https://github.com/musooo/frequency-analysis

cryptography

Last synced: 04 Apr 2025

https://github.com/mindreadio/qsafecrypto

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

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Last synced: 08 Apr 2026

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

RC4 algorithm in rust

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Last synced: 14 Jun 2026

https://github.com/marcode24/criptografia

🔐 This is a cryptography project testing, using base64 and AES criptography

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Last synced: 06 Apr 2026

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

Finite Field Elliptic Curves in rust

cryptography elliptic-curves rust zk

Last synced: 20 Jul 2025

https://github.com/samdney/research-sites

List of useful websites for math, algebra, number theory, cryptography, online security and privacy research.

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Last synced: 22 May 2026

https://github.com/nezutero/crypty

abstraction on built in crypto modules

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Last synced: 17 Mar 2025

https://github.com/gdibble/udacityrocks

Udacity Coursework

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Last synced: 08 Apr 2026

https://github.com/alphaolomi/cryptography-algorithms

A collection of curated cryptography algorithms

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Last synced: 18 Jun 2025

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

CRAM-MD5 digester implementation in JavaScript

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Last synced: 28 Mar 2025

https://github.com/christoffercarlsson/stedy

An easy-to-use cryptography library for JavaScript

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Last synced: 13 Sep 2025

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

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

cryptography data-sharing keyknox sdk

Last synced: 23 Jul 2025

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!

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Last synced: 16 Apr 2026

https://github.com/gat786/cryptography

Python scripts for the basic crytography techniques that are taught in our college

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Last synced: 17 Mar 2025

https://github.com/simplito/privmx-webendpoint

JavaScript library designed to work in browser environment, used by PrivMX communication channels.

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Last synced: 09 Apr 2026

https://github.com/serviejs/keycrypt

Data encryption and decryption for rotating credentials and algorithms

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Last synced: 09 Nov 2025

https://github.com/tywil04/passwordmanager

Simple PasswordManager written using Go and Svelte. Its simple and insecure and it was created as part of a college assignment.

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Last synced: 18 Jan 2026

https://github.com/koraa/decryption-despite-errors

Achieving security against fuzzing and improving bandwidth efficiency by combining FEC and symmetric encryption.

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Last synced: 05 Jan 2026

https://github.com/bytedev/bytedev.crypto

Provides simple cryptographic related classes for hashing/verifying data, encrypting/decrypting data and creating random data in .NET.

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Last synced: 01 Jul 2025

https://github.com/ninja-yubaraj/picoctf-writeups

Solutions and Writeups for picoCTF Challenges.

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Last synced: 01 Jul 2025

https://github.com/robcyberlab/pixel-crypt-engine

🖼️Pixel Crypt Engine🛡️

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Last synced: 31 Mar 2025

https://github.com/statevdev/encry-cli

No-storage deterministic password generator

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Last synced: 02 Jul 2025

https://github.com/magical/skein

The Skein hash function and Threefish block cipher

cryptography

Last synced: 24 Mar 2025

https://github.com/wookey-project/driver-stm32f4xx-hash

STM32F4xx HASH userspace driver

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Last synced: 03 Sep 2025

https://github.com/blahberi/cryptox

Now with CryptoX, even your nan can encrypt like a pro

cryptography

Last synced: 18 Mar 2025

https://github.com/yogsec/secure-communication-tool

A Bash-based encryption & decryption tool using AES-256-CBC, allowing secure message exchange with a single password. Easy-to-use CLI for bug bounty hunters, security researchers, and privacy enthusiasts.

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Last synced: 14 Oct 2025

https://github.com/randombit/botan-ocaml

OCaml binding for botan crypto library

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Last synced: 25 Mar 2025

https://github.com/tdjsnelling/garbled-circuits

Yao’s Garbled Circuits in TypeScript

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Last synced: 12 Apr 2026

https://github.com/atilmohamine/dna_vigenere_cipher

DNA-Based Data Encryption Using Vigenere Cipher Implemented in JAVA

cryptography dna dna-based-cryptography java

Last synced: 09 Apr 2025

https://github.com/daisvke/ft_otp

This program allows you to securely store an initial password in an encrypted file and generate a new TOTP (Time-based One-Time Password) every time it is requested. It provides both a CLI and a GUI version.

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Last synced: 28 Feb 2025

https://github.com/arindal1/morsecode-translator

A Morse-Code Generating web-app based on JavaScript.

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Last synced: 09 Apr 2025

https://github.com/abdulahshoaib/passcrypt

Open source password manager

cryptography go golang security-tools

Last synced: 29 May 2026

https://github.com/emperororokusaki/shai

A cryptography library focused on simplicity, performance, and rock-solid security

cryptography

Last synced: 12 Jun 2025

https://github.com/rasmus-kirk/halo-accumulation

A rust implementation of the Halo2 accumulation scheme from the paper "Proof-Carrying Data from Accumulation Schemes"

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Last synced: 01 Apr 2025

https://github.com/ryleeharrison/iv-crypto

More of an example, not recommended for production use

cryptography cypher

Last synced: 26 Mar 2025

https://github.com/lemniscate-world/noun

Build my own blockchain based on TOR protocol

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Last synced: 25 Mar 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

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Last synced: 13 Apr 2026

https://github.com/hussamsh/nova-cpp

C++ implementation of Nova

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Last synced: 25 Apr 2025

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

Spring Boot Crypto library

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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.

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Last synced: 13 Apr 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.

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