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/harshildarji/locationcrypto

Encryption and Decryption of data using live location of device.

cryptography decryption encryption location position

Last synced: 14 Jan 2026

https://github.com/hayr-hotoca/react-native-chacha20-poly1305

ChaCha20-Poly1305 encryption/decryption for React Native. Native implementations make sure it has the fastest performance.

256-bit aes android chacha20 chacha20-poly1305 chacha20poly1305 cipher cipher-algorithms cross-platform cryptography encryption encryption-algorithms ios javascript react react-native reactjs typescript

Last synced: 07 Oct 2025

https://github.com/cizr/hill-adn-cryptography-bridging-classical-ciphers-with-dna-based-encryption

The Hill-ADN Cryptography project combines Hill cipher methods with DNA encryption, offering a novel approach for improved data security. It includes binary to DNA conversion, amino acid translation, and Hill cipher encryption, with the decryption process addressing genetic code ambiguity challenges.

bioinformatics cryptography data-security dna encryption-decryption genetic-algorithms genetic-code hill-cipher

Last synced: 07 Oct 2025

https://github.com/darconeous/msecret-rust

Tool for deriving various types of keys from known symmetric secrets.

command-line-tool cryptography ecc-cryptography key-derivation passphrase rsa-cryptography rust secret-sharing

Last synced: 19 Jan 2026

https://github.com/hmasila/crypto-php

crypto cryptocurrencies cryptocurrency cryptocurrency-exchanges cryptography

Last synced: 13 Oct 2025

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/jcbritobr/libnacl

Rust wrapper API for libnacl - https://nacl.cr.yp.to/

api cryptography nacl wrapper-api

Last synced: 14 Oct 2025

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

A .NET implementation of PADMÉ padding.

crypto cryptography padding padme padme-padding

Last synced: 23 Jan 2026

https://github.com/spiretechnology/go-jwt

JSON Web Token library in Go

authentication cryptography jwt sessions verification

Last synced: 31 Jan 2026

https://github.com/eqoty-labs/kryptools

Kotlin multiplatorm crypto tools: AES-SIV, Axlsign, AES256-GCM, Bech32, Secp256k1

crypto cryptography kotlin kotlin-android kotlin-js kotlin-jvm kotlin-library kotlin-multiplatform kotlin-native

Last synced: 02 Feb 2026

https://github.com/clach04/jenc-py

Python package for jenc/Markor decryption/encryption

aes aes-256 aes-encryption aes-gcm-encryption aes256-gcm cryptography decryption encryption encryption-decryption gcm java jenc markor pbkdf2withhmacsha512 python

Last synced: 09 Feb 2026

https://github.com/developpeurpascal/xor-keys-generator

A simple generator of bytes lists or arrays in different programming languages.

cryptographic-algorithms cryptography cryptography-tools delphi delphi-app developer-tool developer-tools firemonkey firemonkey-applications

Last synced: 10 Feb 2026

https://github.com/lssandes/crypto-app

blockchain crypto cryptocurrency cryptography cryptorank rapidapi react

Last synced: 11 Feb 2026

https://github.com/venkat-kolasani/knight-s-tour-based-cryptographic-key-generation

The Knight's Tour Encryption System is a cryptographic application that leverages the Knight's Tour problem on a chessboard to generate a unique encryption key. This key is then used for XOR-based encryption and decryption of messages.

cpp17 cryptography design-and-analysisof-algorithm dsa-algorithm knights-tour

Last synced: 15 Feb 2026

https://github.com/protdos/zyphor

Zyphor: A quantum-safe, fully anonymous chat protocol ensuring complete security and metadata protection.

anonymity chat cryptography e2ee encryption messaging metadata perfect-forward-secrecy post-quantum-cryptography privacy protocol security zero-knowledge zero-trust

Last synced: 02 Mar 2026

https://github.com/jedisct1/gimli-constructions

Cryptographic constructions based on the Gimli permutation.

crypto cryptography gimli

Last synced: 05 Mar 2026

https://github.com/proafxin/lattices

This is the lecture series on Lattices given by Oded Regev.

cryptography lattice mathematics

Last synced: 06 Mar 2026

https://github.com/marekyggdrasil/minicurve

A simple library for elliptic curve visualization.

cryptography education visualisation visualization

Last synced: 17 Apr 2026

https://github.com/leo-aa88/bitcoin-cryptography-ecc

Study of bitcoin elliptic curve cryptography (ECC)

bitcoin cryptography ecc-cryptography elliptic-curve-cryptography

Last synced: 10 May 2026

https://github.com/mohammedmehdio/caesarjaw

CaesearJaw 🔐 is a Caesar Cipher Bash Script that allows you to encrypt, decrypt, find a shift key, and brute-force decrypt a given text using the Caesar Cipher.

bash bash-script caesar caesar-cipher caesar-cipher-algorithm communication cryptography cyber-security cybersecurity hacking hacking-tool key security tool tools

Last synced: 29 Apr 2026

https://github.com/tcfw/ocs

An Open Cryptography Standard

certificate certificates crypto cryptography go golang ipfs pki public-crypto security tls

Last synced: 29 Apr 2026

https://github.com/banyc/chatter

An End-to-End Intranet IM with Message Encryption. __Download link:

cryptography dotnet end-to-end-encryption instant-messaging intranet windows

Last synced: 30 Apr 2026

https://github.com/meyiapir/cryptograph

This is a simple console application for encrypting files using AES, written in Python.

aes aes-encryption cryptography file-encryption python python3

Last synced: 09 Jun 2026

https://github.com/hussamsh/nova

Image Cryptography application based on chaotic maps built with Typescript and ElectronJS :electron:

chaos chaotic-map cryptography dynamical-systems electron images maps react

Last synced: 04 May 2026

https://github.com/alierpm/cryptohub

This project is based on Coinranking API: The simplest API for Cryptocurrency Prices - Real-Time & Historical - Crypto Market Data - Coins - Exchanges and Bing News Search API:An AI service from Microsoft Azure that turns any app into a news search resource.

bitcoin blockchain crypto cryptocurrency cryptocurrency-exchanges cryptography ethereum newsapi

Last synced: 07 May 2026

https://github.com/susumuota/nostrain

Nostr client library with no strain.

client cryptography nodejs nostr protocol relay sns social-media social-network typescript vite

Last synced: 08 May 2026

https://github.com/jasondrawdy/autoarchiver

An advanced and flexible auto-archiving tool that allows the archiving of both individual files and entire directories using set intervals.

application archiving automation backup cryptography dotnet encoding security utilities windows

Last synced: 08 May 2026

https://github.com/emrecpp/nextcrypt

Python app with Qt interface for encryption/decryption (Caesar, Vigenere, Atbash, Vernam)

cipher cryptography fluent-design gui modern pyqt pyqt5 pyside pyside6 python qfluentwidgets qt ui

Last synced: 08 May 2026

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/jnm2/threshold

Paper backup requiring a chosen K of N pieces to decrypt. Useful for storing passwords, private keys for PGP or Bitcoin, recovery codes, secret instructions, and small files. Work in progress.

backup bitcoin cross-platform cryptography csharp digital dotnet-core encrypt paper password pgp print private-key redundancy secret-sharing security shamir threshold wallet

Last synced: 10 May 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/yashraj-n/legitly

A simple PDF Signing and verifying website. Made in Next.js

authentication cryptography pdf verification web3

Last synced: 23 Jun 2026

https://github.com/shurlinet/go-clatter

Post-quantum Noise protocol framework for Go. NQ, PQ (ML-KEM), Hybrid, DualLayer handshakes. ML-DSA-65 + SLH-DSA signing (FIPS 203/204/205). 90 patterns, 18 SLH-DSA param sets (SHA2/SHAKE/BLAKE3). Verified against Rust Clatter + NIST ACVP vectors.

blake3 cryptography digital-signatures fips-205 go golang kem key-exchange ml-dsa ml-dsa-65 ml-kem noise noise-protocol post-quantum pqc pqnoise quantum-resistant slh-dsa slhdsa x25519

Last synced: 29 Jun 2026

https://github.com/antonmeep/system_random

Minimal Ada library to retrieve random data from system sources

cryptography random security

Last synced: 23 Feb 2026

https://github.com/davidbuchanan314/roll13

an (unfinished) TLSv1.3 client in pure python, hand-rolled from first principles.

aes aes-gcm cryptography hmac hmac-sha256 python python3 secp256r1 sha256 tls tls13

Last synced: 22 Aug 2025

https://github.com/filiprokita/bcrack

BCrack is a basic tool designed to crack Bcrypt hashed passwords using brute-force methods. Written in C, it highlights the importance of strong passwords and the effectiveness of Bcrypt for password hashing. Ideal for educational purposes and ethical security testing with permission.

bcrypt bruteforce c cli command-line crypt cryptography cybersecurity decryption encryption file-handling hacking hash-comparison hash-cracking password-cracking security wordlist

Last synced: 11 Feb 2026

https://github.com/newyaroslav/crypto-json

C ++ library for JSON encryption with COMMENTS

cryptography json json-parser strip-json-comments

Last synced: 15 May 2026

https://github.com/unclerus/regnupg

Python GnuPG wrapper

cryptography gnupg gpg python

Last synced: 03 Apr 2025

https://github.com/pirate-emperor/cipherx

CipherX is a verification project for Advanced Encryption Standard (AES-128) using Universal Verification Methodology (UVM). It leverages Verilog, SystemVerilog, and Python to ensure robust encryption algorithm validation, integrating comprehensive UVM components and tests.

aes-128 cryptography cryptography-algorithms dataencryption dataencryptionstandards digitaldesign encrytption hardwareverification python security testing-framework uvm verification verilog

Last synced: 26 Jan 2026

https://github.com/pandh4cker/encode-decode-morse-code

Encode&Decode Morse Code

binary-search-tree binary-search-trees binary-tree binary-trees c cryptography morse morse-code morse-codes morsecode morsedecode recursion recursive recursive-algorithm sdl2 sdl2-image sdl2-library sdl2-ttf

Last synced: 25 May 2026

https://github.com/maxirmx/tip5

Tip5 hash algorithm implementation in C++

cryptography cxx hash tip5

Last synced: 29 Jun 2025

https://github.com/qtumproject/qtool

Qtool is a cli command, a JSON RPC api and a golang package that provides crypto functionalities specific for qtum blockchain

bitcoin cryptography ecdsa qtum

Last synced: 28 Apr 2025

https://github.com/tangle-network/anonima

A threshold signature oracle node.

cryptography

Last synced: 14 Sep 2025

https://github.com/icaropires/cryptography

aes cryptography data-encryption-standard digital-signature elliptic-curves golang pseudo-random-generator

Last synced: 26 May 2026

https://github.com/amaitou/sectools

Welcome to the SecTools repository, a curated collection of penetration testing tools designed exclusively for educational purposes. This repository aims to provide a responsible and ethical environment for learning penetration testing techniques within legal boundaries.

cryptography cybersecurity hashing malware-development penetration-testing-tools python3 reverse-shell

Last synced: 15 May 2025

https://github.com/pmuens/time-lock-puzzle

Time-Lock Puzzle schemes implemented in Go and compiled to WebAssembly

cryptography encryption homomorphic-encryption homomorphic-time-lock-puzzle time-lock time-lock-puzzle

Last synced: 15 May 2025

https://github.com/marcode24/criptografia-rsa

🔐 This is a cryptography project testing, using RSA criptography

cryptography css html html-css-javascript html5-css3 javascript multer nodejs rsa rsa-cryptography

Last synced: 11 Apr 2026

https://github.com/cupcakearmy/occulto

Isomorphic encryption library that works both in the browser and node.

aes crypto crypto-library cryptography easy-to-use hash high-level node node-crypto typescript

Last synced: 15 Apr 2025

https://github.com/mrdcvlsc/password-manager

A simple online password manager web application with demo deployed in render.com

aes better-sqlite3 cipher confidentiality cryptography css data-protection decryption encryption fastify full-stack html javascript nodejs online password-manager password-vault sqlite3 web-application

Last synced: 15 Apr 2025

https://github.com/gerhalt/cryptopals

Solutions to Cryptopals challenges in Python 3. Visit https://cryptopals.com/ for the complete list of challenges.

aes-encryption cbc-mode challenges crypto cryptography diffie-hellman dsa dsa-algorithm ecb-mode puzzles python python3 rsa rsa-algorithm solutions

Last synced: 13 May 2026

https://github.com/samuelschlesinger/blake3-lamport-signatures

An implementation of Lamport/Merkle signatures in Rust using the BLAKE3 hash function.

cli cryptography lamport-signature-scheme merkle-signature-scheme rust rust-lang signature

Last synced: 18 Mar 2025

https://github.com/glaukiol1/gagchain

Proof-Of-Work blockchain written in Go

algorithm bitcoin blockchain cryptocurrency cryptography database db elliptic elliptic-curve-cryptography keypairs secp256k1 tcp

Last synced: 05 Mar 2026

https://github.com/gotz1480/bitcoin-cryptography-ecc

Study of bitcoin elliptic curve cryptography (ECC)

bitcoin cryptography ecc-cryptography elliptic-curve-cryptography

Last synced: 07 Apr 2025

https://github.com/ph4r05/zipstream

ZIP archive tampering on the fly library

cryptography java man-in-the-middle research tampering zip-stream

Last synced: 15 Mar 2025

https://github.com/agu3rra/pykeys

Securely store and use your API keys

api coding cryptography key secure token

Last synced: 16 Jan 2026

https://github.com/ajlearner46/post-quantum-cryptography-signature-scheme

Implementation of Post-quantum cryptography signature protocol

cryptography cryptography-algorithms post-quantum-algorithms post-quantum-cryptography post-quantum-signature pqcrypto python signature-scheme

Last synced: 06 Jan 2026

https://github.com/piotrpsz/gost

GOST algorithm implemented in Go

cryptography go gost

Last synced: 17 May 2025

https://github.com/salvacorts/fr-chat-client

:rocket: P2P Chat with asymmetric encryption

asymmetric-cryptography cryptography p2p-chat python rest-api rsa sockets tkinter

Last synced: 15 Mar 2025

https://github.com/nulltea/contangle-zkcp

Universal Zero Knowledge Contingent Payments (on hold)

bitcoin cryptography ethereum payment zero-knowledge

Last synced: 19 Apr 2026

https://github.com/r1b/cryptography

Self-study in cryptosystems

block-ciphers cryptography key-exchange-algorithms rust stream-ciphers

Last synced: 08 Apr 2025

https://github.com/nexenio/rxkeystore

RxJava wrapper for the Android keystore and cryptography utilities

android android-library cryptography rxjava

Last synced: 19 May 2026

https://github.com/ironcorelabs/ironoxide-swift

IronCore Labs SDK for Swift Applications

cryptography proxy-re-encryption swift transform-encryption

Last synced: 02 Jul 2025

https://github.com/ironcorelabs/tenant-security-client-php

Client for the Tenant Security Proxy in PHP

application-layer-encryption byok cmk cryptography encryption php

Last synced: 02 Jul 2025

https://github.com/myusuf3/siapaperwallet

Create Sia Paper Wallets

cryptography paperwallet sia siacoin

Last synced: 05 Jan 2026

https://github.com/theduardomaciel/cryptosia-web

A platform for generating public and private keys that work in sync, ensuring simplified security of sensitive messages through RSA encryption.

c cryptography emscripten nextjs react rsa rsa-cryptography tailwindcss wasm webassembly

Last synced: 12 Apr 2026

https://github.com/seigtm/rsa

A simple C# code that allows you to encrypt and decrypt huge numbers using the RSA algorithm.

biginteger bigintegers cryptography csharp encryption rsa rsa-algorithm rsa-cryptography rsa-encryption rsa-key-encryption

Last synced: 20 Apr 2025

https://github.com/qnighy/crypt-impl-rust

cryptography hash-algorithm rust tls

Last synced: 31 Mar 2025

https://github.com/m3dzik/libcrypto

Cryptographic utilities for Java and JavaScript

aes aes-gcm argon2 crypto cryptography curve25519 encryption hashing security x25519

Last synced: 09 Apr 2025

https://github.com/transferwise/crypto

Crypto helper modules

crypto cryptography vault

Last synced: 09 Apr 2025

https://github.com/jasondrawdy/ecp

A lightweight, flexible, and extensible network communcations protocol created with security in mind and focuses on the productivity of both potential clients and servers.

communications cryptography encryption library networking protocol security tcp tcp-client tcp-server udp udp-client udp-server

Last synced: 05 Sep 2025

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

Swift bindings for my Shamir secret sharing library

cryptography shamir-secret-sharing

Last synced: 12 Jul 2025

https://github.com/davxy/cry

CRY crypto library

arithmetic bignumber cryptography mpi number-theory

Last synced: 09 Apr 2025

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/michaelsproul/swap-or-not-shuffle-isabelle

Formalisation of the swap-or-not shuffle used in Ethereum 2.0

cryptography eth2 ethereum formal-verification

Last synced: 15 Aug 2025

https://github.com/rafa-kozand/random_encryption

Code that generates every time you initialize a random key that will be used to encrypt and decrypt a string. Work related to the discipline of 'Cryptography and Security of Computer Systems'.

cryptography python

Last synced: 27 Feb 2025

https://github.com/aadityaa2606/cryptography-and-network-security

Contains multiple cryptographic encryption algorithms with TCP client server model

client-server cryptography encryption-algorithms encryption-decryption

Last synced: 29 Oct 2025

https://github.com/sudiptab2100/cryptographicalgorithms

Implementation of Cryptographic Algorithms of course Modern Cryptography(CSC049P1M) offered in IIT Jammu.

aes-encryption affine-cipher ceaser-cipher cryptoanalysis cryptoanalysis-algorithms cryptography des-encryption diffie-hellman-key grain-stream-cipher hill-cipher rc4-algorithm rc4-cipher rc4-encryption rsa-cryptography rsa-encryption substitution-cipher vigenere-cipher

Last synced: 07 Jul 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/daniel-boll/zealot

Be Hideous Before Zeal Cease Zealotry.

cryptography decryption encryption study study-group study-project

Last synced: 10 Oct 2025

https://github.com/obaskly/anonymouschat

Secure Anonymous Chat

chat cryptography end-to-end-encryption flask python rsa

Last synced: 19 Jan 2026

https://github.com/juri/fernet

Fernet cryptography format implementation in Swift

cryptography fernet swift

Last synced: 12 Oct 2025

https://github.com/ishanoshada/spiral-cipher

A spiral cipher implementation for text encryption and decryption

cipher crypto cryptography encryption pypi python security spiral spiral-cipher

Last synced: 18 Feb 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/architectv/information-security

🛸 BMSTU Information security course (2020) (semester 7)

bmstu cryptography des digital-signature enigma go golang ics7 information-security lzw lzw-compression rsa

Last synced: 16 Oct 2025

https://github.com/volhovm/ocd-tasks

Solutions for the "An Introduction to Mathematical Cryptography" textbook by Hoffstein, Pipher, Silverman

cryptography

Last synced: 16 Oct 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/erhant/polenta

A toy language to play around with polynomials over finite fields.

cryptography lambdaworks pest polynomials repl rust

Last synced: 06 Feb 2026

https://github.com/loneicewolf/compact-caesar-cipher

ciphers classical classical-ciphers crypto cryptography loneicewolf

Last synced: 23 Jan 2026

https://github.com/pluto/.github

The Pluto Organization

cryptography webproofs

Last synced: 23 Jan 2026

https://github.com/xornet-sl/gosss

Shamir split/combine files/strings. Tool and library

cryptography go shamir

Last synced: 23 Jan 2026

https://github.com/dineshssdn-867/cryptography

Although there are different methods to encrypt and decrypt messages, we'll focus on a linear algebra-based cipher, the Hill cipher, which uses a matrix as a cipher to encode a message or an image, and it's extremely difficult to break when a large matrix is used.

colab-notebook cryptography hill-cipher linear-algebra matrix-multiplication

Last synced: 26 Oct 2025