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/siddhpant/junior-inctf-2017-writeup

Writeups for Junior InCTF 2017

android binary-exploitation cryptography ctf ctf-challenges ctf-solutions ctf-writeups forensics reverse-engineering trivia web-exploitation

Last synced: 29 Apr 2026

https://github.com/ideal-lab5/etf

"Encryption to the Future" consensus and node

blockchain cryptography substrate timelock-encryption

Last synced: 17 Mar 2026

https://github.com/ktauchathuranga/inline-cryptography-toolkit

A Visual Studio Code extention for encrypt, decrypt, and hash text Inline.

cryptography encryption-decryption hashing vscode-extension

Last synced: 13 Feb 2026

https://github.com/ajay-dhangar/project_crypto

Live Previews

crypter crypter-defender crypto cryptocoins cryptocurrencies cryptocurrency cryptocurrency-exchanges cryptocurrency-prices cryptography cryptojs crystal crystal-lang crystal-language

Last synced: 12 Feb 2026

https://github.com/tynes/libsigner

manage watch only bitcoin wallets with bcoin

bcoin bitcoin cryptography ledger nodejs trezor

Last synced: 08 May 2026

https://github.com/micchickenburger/cryptotools

A versatile cryptographic tool for data hashing, encryption, decryption, digital signing, password security, and secure random number generation, entirely in the browser.

aes argon2 bcrypt crypto cryptography cryptography-tools cybersecurity digest encryption encryption-decryption hashing pake pki rsa security security-tools sha

Last synced: 13 Feb 2026

https://github.com/yodalightsabr/2password

2Password: A cryptography experiment

aes-256 cryptography experimental password-manager

Last synced: 10 Feb 2026

https://github.com/adamo08/encryption-decryption

This repository contains implementations of various encryption and decryption algorithms in Python. The goal is to provide simple and easy-to-understand code for educational and practical purposes.

affine-cipher algorithms caesar-cipher cryptography decryption des-cipher encryption hill-cipher python security vigenere-cipher

Last synced: 11 Feb 2026

https://github.com/arec1b0/crypto-comparison

A comprehensive project comparing classical and quantum cryptography. Includes detailed explanations, code examples, and tests for various cryptographic algorithms and protocols.

aes bb84 classical-cryptography cryptography ecc grovers-algorithm qkd quantum-computing quantum-cryptography quantum-teleportation rsa

Last synced: 27 Feb 2026

https://github.com/lumarans30/astralsafeclient

.NET MAUI app that encrypts and decrypts an exe file.

aes-128 anti-piracy client-side cryptography http-requests maui-app

Last synced: 18 Jun 2026

https://github.com/21-dot-dev/swift-bitcoinkernel

Swift package for running a Bitcoin node

bitcoin bitcoin-core bitcoin-node bitcoind blockchain c-plus-plus consensus consensus-validation cryptocurrency cryptography full-node json-rpc libbitcoinkernel p2p regtest spm swift swift-library swift-package-manager swift6

Last synced: 23 Jun 2026

https://github.com/youben11/psi

Playing with different Private Set Intersection protocols

cryptography privacy-preserving psi

Last synced: 25 Apr 2026

https://github.com/prajwalg12121998/avalanche-effect-in-des-and-triple-des

This is a coding assignment as part of Computer Security subject. It does analysis of Avalanche Effect in DES and Triple DES

avalanche-effect blockcipher cryptography des des3

Last synced: 17 Jun 2026

https://github.com/tangle-network/masp-protocol

Multi-asset shielded pool extending protocol-solidity contract system

cryptography privacy zero-knowledge

Last synced: 31 Jan 2026

https://github.com/xu-cheng/pbc-bindings

:electric_plug: Bindings for Pairing-Based Cryptography (libpbc)

bindings cplusplus cplusplus-14 cryptography pbc python ruby swig

Last synced: 18 Apr 2026

https://github.com/primefactor-io/xchacha20-poly1305

100% RFC compliant implementations of ChaCha20-Poly1305 and XChaCha20-Poly1305

chacha20 chacha20-poly1305 cryptography cryptography-algorithms poly1305

Last synced: 01 Mar 2026

https://github.com/thenaubit/crypto-password-generator

🦄 A cryptographically secure password generator!

cryptography emotionjs mantine-ui nextjs password-generator typescript

Last synced: 20 Apr 2026

https://gitlab.com/hackancuba/blake2signer

Using BLAKE in keyed hashing mode to sign and verify data.

blake2 blake3 cryptography hashlib hmac python

Last synced: 15 Feb 2026

https://github.com/vishesh-gupta/cryptology

Container for multiple Cryptography algorithms, ciphers and techniques

cryptography hashing-algorithm rsa-key-encryption secure-hash-algorithm

Last synced: 09 Feb 2026

https://github.com/karakun/encrypted-filechannel

Transparent encryption for java.nio.channels.FileChannel

crypto cryptography java nio security tink

Last synced: 05 Mar 2026

https://github.com/berkekaragoz/experimental-media-platform

My coding tryouts combined in a media platform concept. Next.js, GraphQL, FaunaDB, styled-components and more...

cryptography faunadb graphql nextjs styled-components

Last synced: 02 May 2026

https://github.com/sgiath/secp256k1

Elixir wrapper for Bitcoin Core secp256k1 library

bitcoin cryptography elixir secp256k1

Last synced: 01 Feb 2026

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

Virgil Security Ratchet SDK provides an implementation of the Double Ratchet algorithm, which is used by parties to exchange encrypted messages based on a shared secret key.

cryptography doubleratchet encryption perfect-forward-secrecy pfs ratchet

Last synced: 13 Feb 2026

https://github.com/hicsail/oracles

Useful zero-knowledge (ZK) problems constructed from real world scenarios.

cryptography zero-knowledge-proofs

Last synced: 03 Jun 2026

https://github.com/powershelllibrary/crypto.aes

PowerShell module for cryptography (RSA)

aes aes-encryption aes-gcm cryptography decryption encryption powershell powershell-module

Last synced: 04 Mar 2026

https://github.com/lyang/gpg-utils

Simple Wrapper for shelling out to gpg

cryptography gnupg gpg java processbuilder

Last synced: 01 Feb 2026

https://github.com/lucadibello/virtualsafe

🔒 Crypt your directories and make your files completely unreadable!

cryptography fernet privacy-tools python security security-tool

Last synced: 06 Jun 2026

https://github.com/virgilsecurity/virgil-messenger-x

A simple E2EE chat for iOS which uses Virgil Security services.

chat cryptography demo encryption end-to-end-encryption ios ios-app messenger

Last synced: 19 Jun 2026

https://github.com/sfuhrm/saphir-hash

Cryptographic message digest algorithms as a Java library with standard JCA adapters

crypto crypto-library cryptography cryptography-library cryptohash digest hash hashing hashing-algorithms java library md5 messagedigest ripemd160 sha1 sha2 sha256 tiger

Last synced: 05 Oct 2025

https://github.com/jpvitan/marsa

A Python library that lets you experiment with the mathematics of the Rivest–Shamir–Adleman (RSA) cryptosystem.

cryptography number-theory pypi python rsa

Last synced: 07 Apr 2026

https://github.com/sandeep-shaw10/py-aes

Implementation of Advance Encryption Standard (AES-128/192/256/512) using Python and Numpy

aes-128 aes-192 aes-256 aes-512 blockcipher cryptography numpy python symmetric-encryption

Last synced: 22 Aug 2025

https://github.com/fametrano/bbt

Bitcoin and Blockchain Technology Course Material

bitcoin blockchain blockchain-technology cryptocurrencies cryptography

Last synced: 22 Jun 2025

https://github.com/datumbox/vernamveil

VernamVeil: A Function-Based Stream Cypher

blake3 cryptography python

Last synced: 25 Jun 2025

https://github.com/firaskahlaoui/secury

Secury is a robust encryption and security application designed to ensure data privacy and access management. It features data encryption (Caesar Cipher, AES) and implements advanced Identity and Access Management (IAM) techniques, including Role-Based Access Control (RBAC) and Access Control Lists (ACL).

access-management acl aes-encryption caesar-cipher cryptography data-security encryption iam keyvault keyvault-secrets rbac siem

Last synced: 23 Jul 2025

https://github.com/sc0vu/js-keccak-tiny

Keccak tiny emscripten binding in javascript, including SHA-3/Keccak/Shake hash function.

cryptography hash keccak keccak-tiny sha3 shake wasm webassembly

Last synced: 13 Apr 2025

https://github.com/lvmalware/ztunnel

Secure End-To-End Encrypted tunnels using zig

cryptography e2ee hybrid-encryption kyber quantum-resistant-crypto tunnel x25519kyber768 zig zig-package

Last synced: 28 Jul 2025

https://github.com/ancientlore/hashsrv

A web service that performs hashing, encryption, encoding, and compression.

cryptography encoding golang hashing webservice

Last synced: 06 May 2025

https://github.com/horus-org/payjoin-react-native

React Native Library to Payjoin

bitcoin cryptography lightning-network payjoin privacy

Last synced: 13 Oct 2025

https://github.com/anmol-singh-jaggi/sha2_512

:lock_with_ink_pen: An implementation of SHA-2 hash function with a digest size of 512 bits

c-plus-plus cryptography digest hash

Last synced: 26 Mar 2025

https://github.com/danieldidiobalsamo/sha256_golang

Go SHA-256 from-scratch implementation

cryptography go hasing sha256

Last synced: 11 Apr 2025

https://github.com/lukateras/rust-zerotier-crypto

ZeroTier-compatible cryptography library for Rust

cryptography hashcash rust zerotier

Last synced: 15 Jul 2025

https://github.com/ocdbytes/keylogger-python

Keylogger made with python including mailing and encryption services to get the user info and keylogs in a formated way.

cryptography encryption executable keylogger python3

Last synced: 19 Mar 2025

https://github.com/virgilsecurity/demo-nexmo-chat-android

A simple Web application that demonstrates how the end-to-end encryption works in chat messaging use case. The application uses Nexmo as a messaging provider.

android chat cryptography e2ee encryption end-to-end-encryption messenger nexmo secured-by-virgil vonage web-app

Last synced: 09 May 2025

https://github.com/miraclx/libeaes-js

Enhanced simultaneous compression + encryption prototype with NodeJS

aes-ctr aes-encryption compression cryptography decrypt eaes encrypt gzip pipe stream

Last synced: 28 Oct 2025

https://github.com/juliacrypto/krypto.jl

A futuristic crypto library. In Julia. [OLD]

cryptography decryption deprecated-repo ecc encryption julia pqc rlwe rsa

Last synced: 13 May 2025

https://github.com/rtmigo/dmk_py

Experimental encryption app

cli cryptography deniable-encryption encrypted-store file-encryption information-security linux macos obfuscation package password-manager password-storage plausible-deniability posix python windows

Last synced: 10 Jul 2025

https://github.com/littleli/paillier4j

Simple Paillier cryptosystem library

cryptography homomorphic-encryption paillier property-based-testing

Last synced: 15 May 2026

https://github.com/knightchaser/cryptography

A programmatic resource for cryptography (Gachon CPS + Personal)

algorithm cryptography implementation resource snippet

Last synced: 03 Aug 2025

https://github.com/yangboz/bitcoin-puzzles

The place for Bitcoin related puzzles!

bitcoin cipher cipher-block-chaining cipher-crack ciphertext cryptography image-processing puzzle steganography

Last synced: 02 Apr 2025

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

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

cryptography data-sharing keyknox sdk

Last synced: 09 May 2025

https://github.com/pprattis/Advanced-Encryption-Standard-for-credit-card-number

A script in Python that encrypts and decrypts a credit card number with AES.

aes-encryption computer-science credit-card cryptography decryption encryption program python student

Last synced: 28 Sep 2025

https://github.com/substrate-system/keys

Create and store asymmetric keys with the webcrypto API in the browser

browser cryptography keypair keys

Last synced: 28 Sep 2025

https://github.com/cyrildever/crumbl-js

Secure data storage with trusted third-parties to use in Javascript environment

cryptography data-masking javascript-library signing-trusted storage-api typescript-library

Last synced: 26 Aug 2025

https://github.com/cyrildever/crumbl-hoster

Easy hosting server for the Crumbl platform

cryptography data-masking javascript-library signing-trusted storage-api typescript-library

Last synced: 10 Apr 2025

https://github.com/lnqs/subchain

Local Blockchain Module for JavaScript

blockchain cryptography incredible javascript local typescript

Last synced: 16 May 2026

https://github.com/sdrapkin/securitydriven.winter

Cloud-Scale Cryptography.

aead aes-gcm cryptography gcm streaming

Last synced: 13 Apr 2025

https://github.com/opensuse/wardstone

Assess compliance for cryptographic keys.

certificates cryptographic-keys cryptography google-summer-of-code gsoc open-suse opensuse rust security security-audit security-automation security-tools suse x509

Last synced: 17 Aug 2025

https://github.com/mohammadumar-dev/passkeys-cli

A secure, production-level command-line password manager with encryption, validation, and enhanced user experience.

aes-gcm argon2 cli command-line-tool cryptography developer-tools encryption password-manager postgresql production-ready python python-cli scrypt secure-by-design secure-storage security terminal-app validation

Last synced: 08 Mar 2026

https://github.com/battleoverflow/encrypt-it

🔐 Simple password generator offering various encryption methods.

cryptography encoding encryption python

Last synced: 15 Jun 2025

https://github.com/kosasih/quantum-mesh

A cutting-edge Git repository for developing advanced cryptographic protocols and blockchain integration for Pi Network, leveraging quantum computing principles for unparalleled security and efficiency.

cryptography protocol protocol-oriented-programming

Last synced: 08 Mar 2026

https://github.com/Signal-K/Prof

Prof, from the icelandic word for tests: automated unit tests for the Star Sailors ecosystem

blockchain blockchain-game buildspace cryptography dao dao-design-pattern ethersproject magic nft star-sailors thirdweb

Last synced: 11 May 2025

https://github.com/corvuscodex/multithread-polkadot-brute-force

Nodejs script that generates random private keys for the Polkadot blockchain and checks if the corresponding public address is in a list of addresses stored in a file named ‘data.txt’. If a match is found, the script logs the public address and saves the wallet and its private key (seed) to a file named ‘match.txt’.

bruteforce crack crypto cryptocurrency cryptography javascript nodejs polkadot polkadot-bruteforce polkadot-wallet seed seed-cracking wallet-bruteforce

Last synced: 13 Apr 2025

https://github.com/quyxishi/ethanium

XChaChaPoly1305-Argon2id cli, built on cryptopp & libsodium

argon2id cli cryptography windows xchacha20-poly1305

Last synced: 15 May 2026

https://github.com/erhant/arithmetic-circuits

Moda Palas Blackboard Cryptography II - Arithmetic Circuits & R1CS

circuits cryptography qap r1cs rust

Last synced: 18 Feb 2026

https://github.com/haizzz/lockbox

Double click to encrypt / decrypt a folder

cryptography encryption hacktoberfest python python3

Last synced: 06 Apr 2025

https://github.com/phayes/fdh-rs

Full Domain Hash library for rust

blind-signatures cryptography full-domain-hash hash

Last synced: 17 Mar 2026

https://github.com/cyrildever/feistel-py

Feistel cipher implementation in Python for format-preserving encryption

algorithm cryptography encryption feistel-cipher format-preserving-encryption fpe xor-operation

Last synced: 09 Oct 2025

https://github.com/darshan-kc/python-caesar-cipher

A substitution cipher that shifts letters by a fixed number of positions

cryptography python3

Last synced: 10 Apr 2025

https://github.com/lowleveldesign/powercrypto

PowerShell module with various commands to encode/encrypt/print byte arrays.

cryptography powershell

Last synced: 01 Aug 2025

https://github.com/haskell-cryptography/one-time-password

Haskell implementation of One-Time Passwords algorithms

cryptography haskell hotp totp

Last synced: 12 Jun 2025

https://github.com/malisha4065/basic-cryptography

Basic Cryptography Concepts

cryptography hashing javascript nodejs

Last synced: 02 May 2026

https://github.com/dstein64/lc4

An implementation of ElsieFour (Alan Kaminsky 2017).

cryptography elsie-four lc4

Last synced: 20 Mar 2025

https://github.com/mbarkt3sto/mb-security-dll

A DLL library for (C#.NET ) helping you to Encrypt & Decrypt data

0x0b byte-array cryptography cryptography-library csharp csharp-library decrypt-data decryption-model dll-library dotnet dotnet-library encrypted-data encryption-operation information-security initialization-vector mb-security-dll

Last synced: 09 Jul 2025

https://github.com/manelli/ex_bcrypt

Elixir wrapper for the OpenBSD bcrypt password hashing algorithm

bcrypt cryptography elixir password security

Last synced: 20 Jun 2025

https://github.com/ashrockzzz2003/vault_007

One place to manage all your passwords!

aes blockchain cbc cipher cryptography flutter isar material-design offline-app password-generator password-manager security vault

Last synced: 08 Mar 2026

https://github.com/ntdls/blowfish

A BlowFish C++ implementation.

blowfish cryptography

Last synced: 15 Feb 2026

https://github.com/r3li4nt/aescrypter

Encrypt and Decrypt files with Advanced Encryption Standard.

aes aes-128 aes-192 aes-256 aes-encryption cryptography decrypt encrypt linux python security

Last synced: 09 Mar 2026

https://github.com/johndoe31415/padding-oracle-helper

PKCS#7 CBC padding oracle command line interface helper

cbc cryptography education oracle padding

Last synced: 08 Apr 2026

https://github.com/smirnovvad/shasum

shasum implemented in rust

clap cryptography hashing octavo rust rust-lang sha1 sha256 sha512 shasum

Last synced: 10 Apr 2025

https://github.com/actuallyachraf/algebra

A literate :pencil: implementation of algebraic primitives for cryptography and algebraic applications :alembic:

algebra bulletproofs cryptography elliptic-curve-arithmetic elliptic-curve-cryptography finite-fields learning-by-doing pairings polynomials primitives schnorr-signatures

Last synced: 02 Feb 2026

https://github.com/codiepp/elykseer-base

cryptographic data archive; written in F#; envisaged to stay another 10 years

archive cli cryptography data distributed-storage dotnet fsharp longterm-storage

Last synced: 19 May 2026

https://github.com/diptochakrabarty/voice-encryption

Use Sockets and Encryption Algorithms for cryptography project

cryptography encryption hashing-algorithm rsa rsa-cryptography

Last synced: 01 Aug 2025

https://github.com/michel-leonard/c-rho

The Pollard's Rho algorithm for 64/128 bits Integer Factorization in pure C.

128-bit algorithm c cryptography education example factorization linux math pollard-rho-algorithm simple tool windows

Last synced: 20 Sep 2025

https://github.com/gavincarr/go-slip39

A SLIP-0039 library for Go.

bitcoin cryptography go slip39

Last synced: 31 Jul 2025

https://github.com/notadminn/ethwallethunter

EthWalletHunter generates random Ethereum wallets, checks their transaction history and balance, and logs "interesting" wallets with activity or balance. It's optimized for performance with multithreading and system resource monitoring. Intended for educational and research purposes only.

address-checker brute-force cryptography ethereum ethereum-api ethereum-tools mnemonic mnemonic-cracker mnemonic-generator password-cracker private-key wallet-cracker wallet-generator

Last synced: 10 Jul 2025

https://github.com/ali2210/wizdwarf

(:tada:) WzDwarf is a decentralized molecular application interface

cloud containers cryptography decentralized docker docker-compose go linux protocol-buffers terraform

Last synced: 11 Sep 2025

https://github.com/darshan-kc/python-vigenere-cipher

Vigenere Ciphere using python

cryptography python3

Last synced: 14 Aug 2025

https://github.com/arad-afzali/aes-file-encryptor-decryptor

AES-File-Encryptor is a Python-based application that provides a user-friendly graphical interface for encrypting and decrypting files or texts using the Advanced Encryption Standard (AES). This tool is designed to help users secure their files or texts by generating encryption keys, and encrypting or decrypting them when needed.

aes aes-encryption cryptography decryption encryption-tool file-encryption file-security gui text-encryption

Last synced: 20 Jan 2026

https://github.com/lablnet/cryptographic_algorithms

My own implementation of the Cryptographic Algorithms in Python.

algorithms cryptography python

Last synced: 08 Sep 2025

https://github.com/nicknaso/cryptoppjs

Node.js native addons for cryptopp

cplusplus crypto cryptography javascript native-module nodejs

Last synced: 17 Feb 2026

https://github.com/mortendahl/pond

Experimental library for deep learning on encrypted data

cryptography deep-learning machine-learning secure-computation

Last synced: 15 Jan 2026

https://github.com/cedws/ki-keyring

Utility for ejecting/injecting sets of obfuscated public keys from/into WizardGraphicalClient binaries

cryptography go reverse-engineering

Last synced: 05 May 2025

https://github.com/cyrildever/feistel-jar

Feistel cipher implementation for the JVM providing format-preserving encryption

algorithm cryptography encryption feistel-cipher format-preserving-encryption fpe xor-operation

Last synced: 19 Feb 2026

https://github.com/varun-doshi/rs-merkletree

Rust Library to create Merkle Trees

cryptography data-structures ethereum hash merkle-proof merkle-tree rust tree

Last synced: 04 Oct 2025

https://github.com/ashubly25/cryptography

My Work consists of Diffie-Hellman-Fibonacci, Hashing and XOR Cipher

cryptography

Last synced: 26 Mar 2025

https://github.com/0xnu/qrme

qrme is a quantum-resistant encrypted machine learning system designed to protect sensitive data and models against potential threats from quantum computing.

cryptography large-language-model large-language-models llm llms post-quantum-cryptography