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: 2026-07-15 00:06:57 UTC
JSON Representation

https://github.com/vcsjones/xaes-256-gcm-ruby

XAES-256-GCM for Ruby

cryptography ruby xaes-256-gcm

Last synced: 12 Dec 2025

https://github.com/chubek/mathcord

Discord Math Bot using Custom-Made Shunting Yard (WIP), Custom-Made SHA-512, Custom-Made ED25519

cryptography cryptography-algorithms discord discord-bot ed25519 edwards-curve edwards25519 go golang golang-bot golang-discord sha-512

Last synced: 15 May 2026

https://github.com/mgoyal98/e2ee-adapter

A plug-and-play TypeScript package providing End-to-End Encryption (E2EE) middleware for Express.js and NestJS applications using hybrid encryption (AES-CBC + RSA).

aes-cbc cryptography e2ee encryption end-to-end-encryption express hybrid-encryption key-exchange middleware nestjs no-code-e2ee plug-and-play rsa secure-communication security typescript zero-config

Last synced: 16 Aug 2025

https://github.com/koh-gt/multiply

A powershell script to multiply large numbers, showing all digits.

128-bit 256-bit 512-bit 64-bit base2 bignum cryptography ecdsa multiply octal powershell quaternary seximal ternary

Last synced: 18 Mar 2025

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

Useful Cryptography Extensions

crypto cryptography csharp dotnet

Last synced: 16 Aug 2025

https://github.com/chronosgit/javary

Javary is a secure, Java-based personal diary application built with a client-server architecture. It enables users to create, store, and retrieve encrypted diary entries over a network, ensuring privacy and data persistence.

backend client cryptography diary frontend java jdbc junit mockito networking secure server slf4j testing

Last synced: 16 Aug 2025

https://github.com/alanruno/mxd

MXD — Post-Quantum Blockchain with one-way bridge to BNB Smart Chain. Hybrid Ed25519 + Dilithium5 (FIPS 204 ML-DSA-87) at the address, transaction, and consensus layers.

agpl-3 blockchain bnb-bridge bnb-chain consensus cryptography dilithium5 fips-204 ml-dsa-87 post-quantum

Last synced: 24 May 2026

https://github.com/nthnn/xbin25

Go package designed for secure data serialization, combining state-of-the-art encryption, digital signatures, and multi-layer compression ensuring confidentiality, integrity, and authenticity.

cryptography cryptography-algorithms encryption encryption-decryption golang golang-library golang-package

Last synced: 17 Aug 2025

https://github.com/lancern/enigma

Enigma machine emulator and its crack procedure on modern computers

cryptography enigma enigma-machine rust

Last synced: 02 Jul 2026

https://github.com/kaushalag29/cryptography

Basic Cipher Codes With Python.Deals With Encryption and Decryption.

books cryptography python-script python2-7

Last synced: 08 Jul 2026

https://github.com/olucascruz/securechat_frontend

Frontend de aplicação web de chat com criptografia

chat cryptography react reactjs vite

Last synced: 16 May 2026

https://github.com/p-sira/hycrypt

Stateless-overwrite hybrid cryptosystem for Python

cryptography hybrid-cryptosystem python

Last synced: 06 Mar 2026

https://github.com/BotsUniverse/cryptrooper

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

crypt cryptography decode encode python python3

Last synced: 19 Aug 2025

https://github.com/justscott/listcrypt

Symmetric cryptographic algorithm built with python3

cryptography encryption python38 symmetric-cryptography symmetric-key-cryptography

Last synced: 21 Jun 2026

https://github.com/jamestaylr/aes

Implementation of AES and associated cryptographic helper functions in Crystal

aes course-work cryptography crystal

Last synced: 24 May 2026

https://github.com/deadblackclover/wots-rs

Implementation of the Winternitz One-time Signature Scheme made using Rust

crypto cryptography one-time-signatures rust wots

Last synced: 15 Jan 2026

https://github.com/marlonbarcarol/enigma-engine

An encryption algorithm with the implementation of the enigma machine

cipher cryptography encryption enigma enigma-machine javascript substitution-cipher typescript

Last synced: 15 May 2025

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

A simple program to encrypt and decrypt graphic files

aes crypto cryptography decryption encryption

Last synced: 12 Apr 2025

https://github.com/psychedelicshayna/obsidian.cpp

An abstraction layer that sits on top of OpenSSL which provides a more modern way of interacting with it in C++

abstract cpp-library cryptography decryption encryption moderncpp openssl-bindings wrapper-library

Last synced: 22 Aug 2025

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

A collection of curated cryptography algorithms

algorithms algorithms-and-data-structures cryptography cryptography-algorithms hacktoberfest python rsa-cryptography wiener-attack

Last synced: 18 Jun 2025

https://github.com/moss-piglet/metamorphic-crypto

Zero-knowledge, post-quantum client-side encryption. #![forbid(unsafe_code)]. WASM + UniFFI targets.

argon2id cryptography encryption ml-kem open-source post-quantum privacy rust wasm webassembly x25519 zero-knowledge

Last synced: 01 Jul 2026

https://github.com/niewidzialny84/cryptography-and-cryptoanalysis-lab

Studies laboratories about cryptography and cryptanalysis

cryptography python sha3 studies

Last synced: 24 Aug 2025

https://github.com/wilmerm/cryptshield

Secure Encryption and Deletion Application

bash-script borrado-seguro cifrado command-line cryptography decrypt decryption descifrado encrypt encryption encryption-decryption fernet linux python3 secure-delete securedelete shred

Last synced: 24 Aug 2025

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

algorithm cryptography raw-data rawinput symmetric-keys text

Last synced: 26 Mar 2025

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

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

aes-128 atmega128 avr cryptography groestl-256

Last synced: 10 Apr 2025

https://github.com/4l3x777/ecdsa

Elliptic Curve Digital Sign Algorithm [PrimeField]

big-numbers cryptography diffie-hellman digital-signature elliptic-curve-cryptography nist prime-fields

Last synced: 29 Jun 2026

https://github.com/petrknap/php-crypto-sodium

The library that packages functional `sodium_crypt_*` into objects.

aead aes asymmetric-cryptography block-cipher chacha20 cryptography curve25519 decryption encryption php php-library poly1305 public-key-cryptography secret-key-cryptography security sodium stream-cipher symmetric-cryptography x25519 xchacha20

Last synced: 10 Jul 2025

https://github.com/ledger-things/kadena-rust-lib

A comprehensive Rust library for interacting with Pact smart contracts and the Kadena blockchain.

blockchain cryptography kadena pact rust-lang rust-library

Last synced: 27 Aug 2025

https://github.com/pkx8326/digital_caesar_cipher_with_python

The Digital Caesar Cipher with Python

caesar-cipher caesar-cipher-algorithm caesar-shift cryptography encryption-decryption python

Last synced: 28 Aug 2025

https://github.com/epogrebnyak/vault

Encode and decode a local text file with password.

cryptography nim python

Last synced: 18 Apr 2026

https://github.com/exenon/cryptopals

Solutions to the Cryptopals Crypto Challenges

cryptography cryptopals

Last synced: 03 Oct 2025

https://github.com/gitgab19/blockchain-address-list-generation

The focus of this repo is to retrieve the full list of addresses ever appeared into any transactions for some of the most famous blockchains using the secp256k1 curve. These Python scripts have been used for an academic research at Politecnico di Torino. If you want to know more about our paper, you can find it at https://arxiv.org/abs/2206.14107.

bitcoin blockchain cryptocurrency cryptography research research-paper secp256k1

Last synced: 09 May 2026

https://github.com/yuukiofuyu/campus

Simple Feedback Web to Connect Students with Lecturers Based on Python FLASK

cryptography daisyui decryption encryption flask flask-application flask-sqlalchemy flask-web flask-webapp python-app python-flask python-web python-webapp python3 simple-app simple-project simple-website tailwind web webapp

Last synced: 14 Apr 2025

https://github.com/presidentbeef/ruby_crypto_examples

Examples of cryptography operations using Ruby's standard library.

cryptography elliptic-curve-cryptography openssl public-key-cryptography public-key-encryption rsa-cryptography ruby

Last synced: 11 Jul 2025

https://github.com/radlikewhoa/rainbow-road

Rainbow table exercise for the Cryptography and Security module (krysi) at the FHNW.

cryptography hashing java rainbow-table

Last synced: 11 Nov 2025

https://github.com/wchresta/cotary

Cotary allows you to prove that you have a document without releasing it.

cli cryptography proof simple twitter utils

Last synced: 26 Mar 2025

https://github.com/smadgulkar/enigma

A simple python script to encrypt/decrypt files and folders.

cryptography encryption-decryption python3

Last synced: 24 May 2026

https://github.com/mirtia/ctflearn-cryptography

Writeups for Cryptography Challenges

cryptography ctf-learn

Last synced: 28 Jun 2025

https://github.com/ahmedemad242/secure-shared-file-storage

Project aims to create a secure platform for file sharing using File Transfer Protocol (FTP) and hybrid cryptography. The project involves building an FTP server and client application in Python, as well as implementing multiple cipher encryption to protect the transferred files

cryptography encryption ftp python

Last synced: 04 Apr 2025

https://github.com/iprs-dev/drand-rs

Drand client in Rust

cryptography drand random-number-generators

Last synced: 26 Mar 2025

https://github.com/moul/otp

One-Time Pad utility

conference cryptography one-time-pad otp xor

Last synced: 07 May 2025

https://github.com/matt-raffel-kiva/didgen

Simple tool for generating DID and VERKEY pairs

aries-agents aries-framework cryptography encryption-algorithms hyperledger hyperledger-aries hyperledger-indy indy-node indy-sdk rust rust-lang

Last synced: 24 May 2026

https://github.com/sammyne/sm4

A Go implementation of SM4 block cipher algorithm as specified by GM/T 0002-2012

block-cipher cryptography sm4

Last synced: 18 Mar 2025

https://github.com/isakruas/ecdp

The Elliptic Curve Data Protocol (ECDP) is a P2P communication protocol for decentralized networks, utilizing elliptic curve cryptography (ECC) for encryption, ECDSA for message authentication, and Diffie-Hellman key exchange for secure sessions. It operates over TCP and UDP.

cryptography data-security decentralized-networks diffie-hellman-key-exchange ecdsa elliptic-curve-cryptography encryption message-authentication peer-to-peer protocol secure-communication session-initialization tcp udp

Last synced: 06 May 2025

https://github.com/pur3miish/antelope-ecc

A universal JavaScript ECC digital signature and key utility package for Antelope based blockchains

antelope antelopeio-blockchain blockchain-technology crypto cryptography javascript sign-transactions signature signature-generation signature-verification

Last synced: 10 Apr 2025

https://github.com/reddinton95/custom-plugin-backend

🚀 Master backend development with a structured, self-paced learning platform featuring 7 specialized agents and over 1000 code examples.

a1111-stable-diffusion-webui ai app async backend builder ckeditor5 claude cryptography enigma fastapi italia-design-system krita-plugin montreal-hug stable-diffusion wordpress wordpress-categories wordpress-widget

Last synced: 08 May 2026

https://github.com/anseki/grunt-gnirts

Obfuscate string literals in JavaScript code.

cryptography gnirts grunt-gnirts grunt-plugins gruntplugin javascript literal mangle obfuscate obfuscated obfuscation obfuscator password secret security string

Last synced: 08 Mar 2026

https://github.com/jitendragangwar123/cryptography

This Repository have some basic Cryptographic Algorithms and other basic concepts which is used in Blockchain Technology.

cryptography javascript

Last synced: 07 May 2026

https://github.com/spectre7651/crypta

Reasonably Good Encryption and Decryption Software (Python 3)

cryptography cybersecurity encryption python3

Last synced: 05 Jun 2026

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

A simple fastapi eciespy web backend demo

cryptography ecies fastapi python3 secp256k1 webdemo

Last synced: 12 Apr 2025

https://github.com/yaronkoresh/shual

Shual is a fibonacci based cryptography toolset.

cryptography encryption-decryption hash javascript padding

Last synced: 07 May 2025

https://github.com/guppster/ark-nim

A Nim library simplifying connection to the ARK blockchain

blockchain cryptography nim

Last synced: 25 May 2026

https://github.com/prongbang/aes_ctr

AES CTR - Counter Flutter plugin.

aes-ctr aes-ctr-mode cryptography decryption encryption flutter

Last synced: 04 Jan 2026

https://github.com/lane-romuald/hyperledger-fabric-for-iot-smart-irrigation-system

This repository hosts a Blockchain network built on Hyperledger Fabric to ensure the secure exchange of data in automated irrigation systems. It features three organizations, RAFT consensus, Fabric CA for certification, and Hyperledger Explorer for network visualization.

blockchain certificate-authority chaincode channel consensus-algorithm cryptography css docker docker-compose go html hyperledger-explorer hyperledger-fabric irrigation javascript raft tls web yaml

Last synced: 09 Apr 2026

https://github.com/simplito/privmx-endpoint-swift

Swift wrapper for the native C++ library used by PrivMX to handle end-to-end encryption.

chat communication cryptography data-transfer decryption e2ee end-to-end-encryption files messaging privacy privacy-protection private privmx secure simplito storage swift thread zero-knowledge

Last synced: 18 Jun 2026

https://github.com/shubhattin/hash_cryptography_tool

A Simple Online Cryptography Tool

cryptography encrypt-decrypt hash picocss utf-8

Last synced: 17 Jan 2026

https://github.com/definetlynotai/cryptoxide

Special Rust mini library to define your own cryptography hashes

cryptography custom customizable library mini rust side-project

Last synced: 21 Jul 2025

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

🔐 Crypto Final Project - Encoderr

cryptography decoding encoding javascript uagrm webpack

Last synced: 11 May 2026

https://github.com/erhant/enigma-machine

An Enigma Machine in TypeScript.

cryptography enigma-machine typescript

Last synced: 04 Jun 2026

https://github.com/noahie-valk/basic-password-manager

Project for Project Shark to understand and apply cryptography concepts

cryptography python

Last synced: 05 Apr 2025

https://github.com/vexcited/iut-r3.09

Module de cryptographie de BUT2 à l'IUT du Limousin.

cryptanalysis cryptography iut-du-limousin rust

Last synced: 08 Sep 2025

https://github.com/mingikang31/sift-v1.0

Cryptography Project

cryptography encryption-decryption python3

Last synced: 16 Jun 2025

https://github.com/mveytsman/cryptopals

Doing cryptopals in Elixir LiveBook

cryptography cryptopals-crypto-challenges elixir livebook

Last synced: 18 May 2026

https://github.com/jimouris/draft-mouris-cfrg-mastic

Specification of the Mastic Verifiable Distributed Aggregation Function (VDAF)

cfrg cryptography ietf irtf mpc plasma secure-multiparty-computation

Last synced: 17 Feb 2026

https://github.com/lukinalexeyg/phpcrypt

Stand-alone version of php_sha256_crypt without any PHP dependencies

c cryptography php

Last synced: 21 Apr 2026

https://github.com/liblor/applied_cryptography_ethz

Applied Cryptography Lab @ ETHZ

applied-cryptography cryptography ethz lab

Last synced: 12 Jun 2025

https://github.com/mrshankly/erlang-paillier

NIF bindings for the libpaillier cryptographic library

cryptography erlang homomorphic-encryption paillier

Last synced: 18 May 2026

https://github.com/shgysk8zer0/jscrypt

Cryptographic modules implemented in JavaScript (I.E. SubtleCrypto API)

aes aes256 crypto cryptography ecmascript2015 es6 es6-modules javascript jscrypt jwk nodejs npm phpcrypt rsa spki subtlecrypto subtlecrypto-api webcryptoapi

Last synced: 08 May 2026

https://github.com/desgeeko/kryptos

A practical introduction to Kryptos K1-K3 brute-force decryption

brute-force cryptography decryption jupyter kryptos python transposition vigenere

Last synced: 29 Jun 2026

https://github.com/pmuens/ecc-ts

Elliptic Curve Cryptography implementation of ECDH and ECDSA on curve secp256k1

cryptography cryptography-algorithms cryptography-library ecdh ecdsa elliptic-curve elliptic-curve-cryptography elliptic-curve-diffie-hellman elliptic-curve-digital-signature-algorithm secp256k1

Last synced: 15 May 2025

https://github.com/amculin/php-vigenere-cipher

Simple implementation of Vigenere Cipher algorithm in PHP, also implement modification to support alpha-numeric characters

classical-cryptography cryptography php php82 php83 vigenere-cipher

Last synced: 07 Jun 2026

https://github.com/gat786/cryptography

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

ciphers cryptography python3

Last synced: 17 Mar 2025

https://github.com/go-compile/rome

The Elliptic and Edward Curve cryptography library built for multi-curve use. Unified crypto interface for ECDSA, EdDSA, ECIES and ECDH. NIST Curves, Brainpool, Ed25519, Ed448.

crypto cryptography ecdh ecdsa ecies ed25519 edwards-curve elliptic-curves encrypt multi-curve p521

Last synced: 15 Apr 2025

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

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

communication cryptography end-to-end-encryption privacy web zero-knowledge

Last synced: 09 Apr 2026

https://github.com/moeraorg/python-moeralib

Python library to interact with Moera decentralized social network

cryptography decentralized library moera python python-library python3 social-network

Last synced: 05 Jan 2026

https://github.com/csnp/qramm-tls-analyzer

TLS/SSL security analyzer for quantum readiness assessment and CNSA 2.0 compliance

cbom cnsa cryptography golang post-quantum-cryptography pqc quantum-computing security security-scanner ssl tls

Last synced: 13 Jan 2026

https://github.com/ayoub-aberbach/complex_it

Complex it - Complex Passwords Generator

cryptography css javascript reactjs

Last synced: 23 Mar 2025

https://github.com/ph4r05/codesign-analysis

android-analysis codesign codesigning cryptography research

Last synced: 15 Mar 2025

https://github.com/irby/secrets-sharing-tool

A C#/.NET Core API and Angular client application designed to help users securely distribute short-session one-time secrets.

cryptography security

Last synced: 21 Apr 2026

https://github.com/cebem1nt/keeper

Keeper is a python password manager with git synchronization between multiple devices.

argparse cryptography encryption fernet-cryptography password-generator password-manager password-store python3 terminal-based terminal-tool termux

Last synced: 03 Feb 2026

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

No-storage deterministic password generator

cli cryptography encry encryption password password-generator password-manager ruby

Last synced: 02 Jul 2025

https://github.com/magical/go-ascon

Go implementation of Ascon-128, Ascon-Hash, Ascon-Xof, Ascon-128a and Ascon-Hasha

cryptography

Last synced: 24 Mar 2025

https://github.com/snksensei/dotcoin-auto-clicker

bitcoin crypto cryptocurrencies cryptocurrency cryptography dotcoin dotcoin-auto-farm dotcoin-bot dotcoin-bot-profit dotcoin-clicker dotcoin-telegram-bot litecoin telegram telegram-bot

Last synced: 15 Mar 2025

https://github.com/alexmasi/block-cipher-ctr-ecb

An AES implementation of a CTR block cipher using a CBC-MAC along with an ECB implementation for comparison

aes bmp c cryptography ctr ecb-mode

Last synced: 24 Mar 2025

https://github.com/umitkrkmz/chaotic_audio_steganography

Official Python implementation of "Secure Audio Steganography using Vectorized LSB and Chaos-Based Encryption" (DOI: 10.64470/elene.2025.12).

audio-processing chaos-theory chaotic-maps cryptography image-encryption lsb-steganography pyside6 python research-paper steganography

Last synced: 13 Jan 2026

https://github.com/miraclx/xstrip-auth

Cryptographically strong pseudorandom key generator based on the `XStrip Algorithm`

cipher cryptography encrypt pbkdf2withhmacsha512 pseudorandom

Last synced: 28 May 2026

https://github.com/opendream/vanityssh-rust

VanitySSH-Rust is a Rust-based project designed to generate SSH keys with customizable prefixes or patterns. It emphasizes performance and security, leveraging Rust's strengths for efficient cryptographic operations and minimal resource usage.

cryptography key-generation rust ssh vanity-key

Last synced: 16 Jan 2026

https://github.com/emrekybs/samurai

Samurai is a lightening fast CPU friendly Hash Cracker

cryptography hash hashcrack hashcracker hashcracking md5 md5-hash

Last synced: 04 Jul 2025

https://github.com/mostafa-wael/number-theory-and-cryptography-rsa

The RSA assignment from Coursera course "Number Theory and Cryptography"

coursera cryptography rsa

Last synced: 16 Mar 2025

https://github.com/dsprenkels/sss-hs

Haskell bindings for my Shamir secret sharing library

cryptography shamir-secret-sharing

Last synced: 16 Mar 2025

https://github.com/dhanya-abhirami/cryptography-algorithms

Implementation of Traditional Ciphers

caesar-cipher cryptography hill-cipher playfair-cipher vigenere-cipher

Last synced: 31 Mar 2025

https://github.com/klestovalexej/emerald.examples

Примеры работы с API облачного транспорта

cms cmssigner cryptography https pkcs restsharp signer wattle3 x509certificates

Last synced: 11 Jun 2025

https://github.com/cmason3/portfwd

TCP/UDP Port Forwarder

chacha20-poly1305 cryptography golang post-quantum tcp udp

Last synced: 24 Mar 2025

https://github.com/chihsiao/eva4j

JNI Wrapper for EVA: JVM & Android Support with Kotlin DSL

cryptography homomorphic-encryption

Last synced: 24 Mar 2025

https://github.com/vechain/thor-devkit.java

Java (8+) library to assist a smoother development process on VeChainThor for all developers and hobbyists. Includes wallets creation, transaction assembling, signature, ABI encoding, and bloom filter.

bloom-filter crypto cryptocurrency cryptography hd-wallet java keystore mnemonic-wallets sdk thor-devkit vechain

Last synced: 27 Nov 2025

https://github.com/BKLockly/ShadowMeld

🕶️ 隐蔽Shellcode嵌入与反检测加载器生成框架 / Stealthy Payload Delivery Framework with Anti-EDR Capabilities

bypass-antivirus bypass-av cipher cryptography hacking hide-files image-steganography lsb-steganography security shellcode shellcode-loader

Last synced: 01 Apr 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.

communication communication-tool cryptography cybersecurity-tool hackers hacking hacking-tool secure-communication