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
JSON Representation

https://github.com/shreyansh26/secure-voting-application

Secure Voting Protocols using RSA

cryptography rsa secure-voting voting-system

Last synced: 22 Jun 2026

https://github.com/01alekseev/petoron-core-adc

An open source blockchain written from scratch in Python. :))

blockchain consensus cryptocurrency cryptography decentralized minimal open-source p2p petoron proof-of-work python

Last synced: 27 Jun 2026

https://github.com/unikraft/lib-libhogweed

Port of libhogweed to Unikraft

cryptography library unikraft

Last synced: 20 Jun 2026

https://github.com/amirhosein2004/secure-token

package secure-token

cryptography pypi-packages python secure-token

Last synced: 13 Apr 2026

https://github.com/saeed0x1/black-hat-ctf

This CTF event was organised by Data Science analytics and Cyber Security club at the annual Tech Fest Prajyukttam 🎆, Assam Don Bosco University 🎓

binary-exploitation capture-the-flag cryptography ctf ctf-challenges ctf-tools digital-forensics web-exploitation website

Last synced: 04 Mar 2026

https://github.com/mohitrajain/rootctf

CTF ( Capture the flag a cyber security event ) .

cryptography ctf forensics pwning reverse-engineering steganography system-administration web-exploitation

Last synced: 13 Oct 2025

https://github.com/thomasthaddeus/algorithmselector

Explore our extensive Algorithms Repository, featuring a diverse range of algorithms from computational methods to data structures, cryptographic techniques, and AI. Ideal for education, research, and practical application, each algorithm is well-documented, tested, and optimized for performance and readability.

ai algorithms computational-algorithms computer-science cryptography data-compression data-structures educational-resource game-theory graph-theory machine-learning network-flow open-source optimization python

Last synced: 01 Mar 2026

https://github.com/abdellatif-temsamani/cryptjs

`cryptjs` is a JavaScript/TypeScript library that brings cryptographic functionality from Dart to the web

crypt-lib cryptography hash javascript password-hashing security sha-256 sha-512 sha512 typescript

Last synced: 22 Jan 2026

https://github.com/vishalshenoy2002/file-encrypter

Keep your files safe by encrypting it 🙂

cryptography encrpytion file-encryption file-encryption-python file-encryptor safe security

Last synced: 18 Jun 2026

https://github.com/timthedev07/cipher.py

Python ciphers

cipher cryptography python

Last synced: 18 Jun 2026

https://github.com/insektdotbin/doxbox

📦 DoxBox will help you learn to make tools for cybersecurity purposes using Python 3.

cpp cryptography cybersecurity cybersecurity-education hacking hacking-tool information-gathering javascript python

Last synced: 28 Feb 2026

https://github.com/tankerhq/sdk-rust

Tanker client-side encryption SDK for Rust

cryptography encryption end-to-end privacy rust sdk security tanker

Last synced: 09 Apr 2025

https://github.com/azlibdar/caesar-cipher

Caesar Cipher using JavaScript

caesar-cipher cipher-algorithms cryptography

Last synced: 31 Mar 2025

https://github.com/tommasoazz/cryptography-notes

Notes for studying, preparing homeworks and exams of the course "Cryptography" of University of Bologna, Master Degree in Computer Science (LM Informatica), A.Y. 2021/2022.

computer-science cryptography notes

Last synced: 11 Feb 2026

https://github.com/mobilecoinfoundation/rand

A platform abstraction layer providing a cryptographic RNG

cryptography no-std random rng

Last synced: 26 Jul 2025

https://github.com/christoffercarlsson/autograph

The Autograph Protocol

authentication chacha20-poly1305 cryptography decentralization diffie-hellman ed25519 elliptic-curves freedom hkdf identity ownership privacy security verification x25519

Last synced: 18 Oct 2025

https://github.com/tom-weatherhead/helix

An RSA encryption and uuencoding/uudecoding application from 2002.

cpp cryptography encryption rsa-encryption uudecode uuencode

Last synced: 09 Oct 2025

https://github.com/hirannor/xml-digital-signature-java

An example project how to create digitally signed xml in java (detached signature)

certificate cryptography detached-signatures digital-signature digital-signature-algorithm digital-signature-library dsig java java-11 keystore maven pkcs12 signature signature-generation signature-verification xml xml-digital-signature xml-security xmldsig xmldsig-signature

Last synced: 08 May 2026

https://github.com/pastesafe/pastesafe.github.io

instant web cryptography. encrypt in realtime as you type. share and decrypt ciphertext.

cryptography web-app

Last synced: 10 Mar 2026

https://github.com/scorpi-on/richelieu-feistel-cipher

Web app that implements the Richelieu cipher and the Feistel network for encrypting text data. A project for studying frontend using a ready-made component kit. Lab work on Program and Data Security (Oct 2024, 7th semester of university).

cryptography daisyui feistel-network frontend lab-work richelieu-cipher tailwindcss university-project

Last synced: 28 Apr 2026

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/mrdecryptdecipher/pow-based-blockchain

A SIMPLE PROOF OF WORK BASED BLOCKCHAIN WHICH USES HASHING FEATURE TO HASH INPUT, IT ALSO HAS A GENESIS BLOCK AND OTHER NECESSARY FILES TO CREATE POW ALGORITHM

bitcoin blockchain blockchain-technology consensus-algorithm cryptography decentralized dlt proof-of-work

Last synced: 12 Mar 2026

https://github.com/edeckers/lib1password-unofficial

Educational TypeScript implementation of 1Password's security model with interactive explainer. Covers Secret Key generation, PBKDF2 key derivation, and AES-256-GCM vault encryption

1password aes-256 cryptography educational encryption interactive-demo password-manager pbkdf2 pet-project security srp typescript web-crypto

Last synced: 28 Feb 2026

https://github.com/thefish/gogost

Cypherpunks.ru gogost mirror

cryptography encryption-algorithms gost russian

Last synced: 14 Jan 2026

https://github.com/kn0sys/qfe

qualitative frame entanglement - an experimental protocol for quantum-secure communication

ai cryptography pqc quantum-cryptography

Last synced: 23 Feb 2026

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/keeplist-io/keeplist-tpif

A thesis proposing a Tiered Privacy Framework to combat disinformation and enhance trust on the modern internet

amplification blockchain cryptography decentralized disinformation identity privacy social-media transparency verification

Last synced: 23 Feb 2026

https://github.com/z1ph1us/milksad-mnemonic-generator

This tool generates BIP-39 mnemonic phrases derived from Unix timestamps, exploring the 'Milk Sad' vulnerability's implications (CVE-2023-39910)

bip39 bitcoin bitcoin-wallet blockchain bx cryptocurrency cryptography cve-2023-39910 entropy exploit milk-sad mnemonic-generator multi-language security-tool seed-phrase unix-timestamp vulnerability wallet-security

Last synced: 12 Mar 2026

https://github.com/exploide/ulpcrypt

Implementation of the U-LP Cryptosystem

cryptography cryptography-library

Last synced: 06 Sep 2025

https://github.com/aead/sio

Go implementation of the Data At Rest Encryption (DARE) format.

cli cryptography encryption

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/tsmx/string-crypto

Easy encryption and decryption for strings in NodeJS.

aes cipheriv crypto cryptography encryption string

Last synced: 22 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/Lemniscate-world/Noun

Build my own blockchain based on TOR protocol

anonimity blockchain cryptography proof-of-stake security tor

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/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/taiizor/uuid

A modern, high-performance UUID library for .NET ecosystem. Features time-ordered identifiers, cryptographic security, multiple encoding formats (Base32/Base64), and seamless Guid compatibility. Thread-safe, cross-platform, and perfect for distributed systems. 🚀

base32 base64 cross-platform cryptography csharp distributed-systems dotnet guid identifier netcore netstandard performance thread-safe time-ordered uuid

Last synced: 19 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/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/pushpendra-1697/wedsurf

This React onboarding project includes pages for login, signup, home, and profile functionalities, catering to user authentication and navigation, facilitating a seamless design experience. The user will be blocked for the next 24 hours after putting 5 times wrong password at the time of token-based login.

axios bcrypt chakra-ui cryptography expressjs jsonwebtoken jwt-decode mongodb mongoose nodejs otp-authentication react-components react-hooks react-icons react-router-dom react-slideshow-image reactjs responsive-design token-based-authentication twilio

Last synced: 02 Apr 2026

https://github.com/cicciog/cryptographyexample

Cryptography Primitives examples

asymmetric-encryption cryptography java java-cryptography java-security message-authentication-code modern-ciphers private-key-encryption public-key-encryption symmetric-encryption

Last synced: 24 Sep 2025

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/rohith-2/cryptographic_blockchain

Simulating Blockchain with mining and peer verification

blockchain cryptography mining sha-256

Last synced: 23 Jan 2026

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

cryptography kestra pgp plugin

Last synced: 25 Oct 2025

https://github.com/blakeziegler/ozone-blockchain

IPFS compatiable blockchain using Akka actors and Akka clusters.

akka akka-actors blockchain cmake cpp crypto cryptocurrency cryptography encryption ipfs ipfs-api ipfs-blockchain openssl sbt scala sha256

Last synced: 23 Jan 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/lgraubner/strong-pwgen-cli

🔒Generate cryptographically strong passwords.

cli crypto cryptography password password-generator

Last synced: 27 Oct 2025

https://github.com/confy-security/confy-addons

Implementation of symmetric and asymmetric encryption with AES and RSA algorithms for client applications of the Confy communication system

aes base64 confy cryptography decryption encryption privacy rsa security

Last synced: 28 Jan 2026

https://github.com/virtualox/get-randomhex.ps1

Adjustable Random Hex String Generator.

cryptography function hex hexadecimal powershell powershell-scripting powershell-scripts random-key-generator rngcryptoserviceprovider

Last synced: 25 Jun 2026

https://github.com/prthd/secure-file-system

A secure multi-user file system with end-to-end encryption, HMAC-based integrity verification, and Unix-style permission control. Features bcrypt-authenticated logins, group-based collaboration, and a command-line interface for secure file operations on untrusted storage.

access-control bcrypt cli cryptography encryption fernet-encryption filesystem hmac-sha256 integrity python secure-storage security unix-permissions

Last synced: 25 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/hubtou/certwatch

Watch the certificates expiration dates for a list of hostname:hostport

certificate certificates command-line-tool cryptography domain expiration expiry pnu-project python security security-automation security-scan security-tools servier tls tls-certificate utility x509 x509-parser x509certificates

Last synced: 25 Feb 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/crypto-compare

Interactive cryptographic algorithm reference — 17 categories, 97 algorithms, 16+ countries. Comparison tool with beginner/advanced modes, PQ-safe filtering, and justification report export.

aes cryptographic-algorithms cryptography digital-signatures education homomorphic-encryption nist post-quantum pqc reference typescript vite zero-knowledge

Last synced: 01 Jun 2026

https://github.com/cpscript/qrcryptography

Experimental post-quantum cryptographic framework implementing hybrid lattice-based encryption with hash based signatures. Combining Ring-LWE, standard LWE, and Merkle trees for defense against classical and quantum attacks.

cryptographic-research cryptography experimental hash-based-signatures python quantum-resistant ring-lwe

Last synced: 04 Sep 2025

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/dracoon/dracoon-swift-crypto-sdk

Official DRACOON Crypto SDK for Swift

crypto cryptography dracoon sdk swift

Last synced: 09 Feb 2026

https://github.com/talyx/amib

Реализация криптографических алгоритмов/протоколов/схем

cryptography

Last synced: 19 Apr 2026

https://github.com/juliangrtz/mightyxor

.NET cryptography suite supporting one-time pads, Shamir secret sharing and plausible deniability

crypto cryptography cryptosuite decryption encryption one-time-pad otp plausible-deniability quantum-computing security shamir-secret-sharing shamirs-secret-sharing xor

Last synced: 02 Jun 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/blackbossx/bosscrypto

my cryptography method

crypto cryptography cryptography-algorithms cryptography-project cryptography-tools

Last synced: 15 Feb 2026

https://github.com/notstatilko/uiscrypt

Make strength passwords with uiScrypt!

cryptography password-generator password-manager scrypt scrypt-algorithm urlsafe-base64

Last synced: 15 Feb 2026

https://github.com/nemanjapetrovic/cryptography-course-elfak

Cryptography course @ Faculty of Electronic Engineering, University of Niš, Serbia

cipher cryptography knapsack multithreading rc4 simple-substitution tea threading xtea

Last synced: 16 Apr 2026

https://github.com/mukaschultze/diffie-chat

AES-CBC encrypted chat with elliptic-curve Diffie-Hellman key exchange, running on Angular

aes-cbc aes-encryption angular cryptography diffie-hellman elliptic-curves key-exchange-algorithms

Last synced: 21 Jan 2026

https://github.com/marichu-kt/chacha20-poly1305-x25519

Esto es una app cliente-servidor en C++ que cifra mensajes con ChaCha20-Poly1305 y usa X25519 para el intercambio seguro de claves. Soporta comunicación bidireccional por TCP y configuración vía XML.

asymmetric-encryption c-plus-plus chacha20-poly1305 client-server cpp cryptography curve25519 end-to-end-encryption multi-threading network-security openssl secure-chat secure-communication secure-messaging tcp-sockets x25519 xml-configuration

Last synced: 23 Apr 2025

https://github.com/azuchi/frostrb

Ruby implementations of Two-Round Threshold Schnorr Signatures with FROST.

bitcoin cryptography elliptic-curve frost schnorr schnorr-signatures taproot threshold-signature

Last synced: 02 Mar 2026

https://github.com/shgysk8zer0/phpcrypt

Provides a variety of cryptographic traits and classes to PHP

aes aes256 cryptography jscrypt php php-7 phpcrypt rsa spl-autoload traits

Last synced: 01 Apr 2026

https://github.com/01alekseev/psc

Petoron Seal Contracts (PSC) is a minimalistic cryptographic contract format. It doesn't execute. It verifies. Then it ends :))

binary crypto-contracts cryptography digital-signature minimal petoron psc security ttl

Last synced: 27 Jun 2026

https://github.com/breezy-codes/cryptography-projects

A fun little collection of different cryptographic algorithms I've learned about. This is developed purely for fun, please don't use them for actual encryption.

crypto cryptographic-algorithms cryptography cryptography-algorithms

Last synced: 25 Mar 2025

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

SAFE encryption skill for AI coding assistants

agent-skills claude-code copilot cryptography cursor encryption safe skill windsurf

Last synced: 04 Mar 2026

https://github.com/samuel-lucas6/ascon.net

A .NET implementation of the Ascon cipher suite.

aead ascon ascon-128 ascon-128a ascon-80pq ascon-hash ascon-hasha ascon-mac ascon-prf ascon-prfs ascon-xof ascon-xofa crypto cryptography hash message-authentication-code nist nist-lwc prf xof

Last synced: 27 Mar 2025

https://github.com/samuel-lucas6/covertpadding

An implementation of the Covert Encryption randomised padding scheme.

crypto cryptography encryption padding purb

Last synced: 27 Mar 2025

https://github.com/ntdls/ntdls.permafrost

The NetworkDLS original symmetric cipher algorithm ported to C#.

cryptography library nuget showcase

Last synced: 06 Mar 2026

https://github.com/bok1c4/PGPKeyTypeDetector

This includes RSA and ECC cryptographic algorithms

cryptography go pgp

Last synced: 25 Mar 2025

https://github.com/jparr721/monkey

🐒 Non GMO password manager, safe for consumption

cryptography cryptography-tools nodejs password password-vault tool

Last synced: 20 Apr 2026

https://github.com/docxology/steganographer

cryptography media-verification open-source python security steganography watermarking

Last synced: 29 Jun 2026

https://github.com/disalad/caesar-cipher

📜 A tool to encrypt, decrypt & crack texts with a substitution cipher

caesar-cipher caesar-cipher-cli caesar-cipher-python cli cryptography substitution-cipher symetric-key

Last synced: 06 Apr 2025

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/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/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/koadt/encodr

A Chrome extension that provides a comprehensive suite of encoding, decoding, and hash analysis tools, all within your browser. Convert text between various formats with a clean, modern interface.

base64 bcrypt cryptography decoder encoder extension-chrome hashing javascript jwt

Last synced: 29 Apr 2026

https://github.com/arpitgo4/bitcoin-wallet

Browser based Bitcoin wallet implementation.

bitcoin-wallet cryptocurrency cryptography react-router reactjs

Last synced: 29 Apr 2026

https://github.com/fblupi/encryptator

A simple webapp to encrypt and decrypt messages

bootstrap cryptography webapp

Last synced: 30 Apr 2026

https://github.com/aburdulescu/pocryp

Command line utility for cryptographic primitives

cli cryptography go golang

Last synced: 08 Jun 2026

https://github.com/frankrichardhall/huddle01-testnet-airdrop-bot

A Node.js-based automation script that helps you join Huddle01 rooms with multiple wallet accounts at once to earn testnet participation points efficiently.

airdrop automation blockchain cryptography evm google-meet meet node testnet

Last synced: 29 Jun 2026

https://github.com/afraz496/fypafraz

This repository comprises of a Post Quantum Cryptography implementation. This is a repository that includes all of the software developed for the Final Year Project of Afraz Arif Khan (CID 00963429) at Imperial College London.

c cryptography key-exchanges postquantum python

Last synced: 01 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/modemobpsycho/itra-task-3

The third assignment from the internship.

ascii chalk cryptography hmac-sha256 typescript

Last synced: 08 Jun 2026

https://github.com/jacob-ian/deno_random_primes

Generate random prime numbers with Deno and the Miller-Rabin test.

cryptography deno typescript

Last synced: 02 May 2026

https://github.com/jacob-ian/deno_random_bigint

Generate a random BigInt by bit-length with Deno.

cryptography deno typescript

Last synced: 02 May 2026

https://github.com/obaskly/vas-y

aes base64 cipher cryptography encryption-decryption rsa

Last synced: 09 Jun 2026

https://github.com/skylinenando/php

Some functionality or tools to enhance using php

akaxmysqli array creating-txt-file cryptography date hash php random-code str-replace

Last synced: 02 May 2026

https://github.com/reklatsmasters/is-chacha20-poly1305-supported

Check whether a chacha20-poly1305 cipher is supported by NodeJS

aead chacha20 chacha20-poly1305 cipher crypto cryptography nodejs poly1305 rfc7539

Last synced: 03 May 2026

https://github.com/elliotwutingfeng/balloon-hashing

Balloon Hashing implemented in Ruby.

crypto cryptography hash kdf-algorithm key-derivation-function password ruby ruby-language

Last synced: 10 Jun 2026

https://github.com/ash-2k3/ooni-chainwatch

A python script to extract certificate chains from OONI web connectivity measurements and submit them to a Let's Encrypt Certificate Transparency (CT) log. This aids in monitoring and auditing the certificates used on the web, contributing to internet transparency efforts.

certificate-transparency cryptography python s3-buckets x509certificates

Last synced: 10 Jun 2026