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: 2026-06-23 00:06:53 UTC
JSON Representation

https://github.com/zeyadetman/image-textsteganography

🖼 An image steganography by converting the image into text of pixels and use the LSB to hide the ciphered text that encrypted by The Caesar cipher Algorithm (Cryptography). The project decrypt the image by loading it, converting the pixels’ digits and break the LSB.

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Last synced: 27 Sep 2025

https://github.com/xannythepleb/pycrypt

A rudimentary encryption program written in Python. Plan to add a lot more functionality soon. Please note this is an unaudited hobby project! If security is vital, use Signal or PGP.

blake2b chacha20-poly1305 cryptography encryption-tool python-encryption python3

Last synced: 05 Jun 2026

https://github.com/chardoncs/libpgfe

Experimental cryptographic & OTP library

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Last synced: 12 Mar 2025

https://github.com/cflems/pk

Penguin's Kiss: Asynchronous Command and Control software + multi-client + encrypted + terminal emulation

c2 command-and-control cryptography penguins-kiss pk remote-shell

Last synced: 10 Jan 2026

https://github.com/geeklearningio/gl-ionic-secure-file-storage

A service using two encryption plugins to encrypt data on iOS and Android

cordova cryptography ionic security storage

Last synced: 28 Apr 2025

https://github.com/yds12/guarakapa

Password manager for the terminal.

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Last synced: 10 Apr 2025

https://github.com/nmrr/nitrokeyhsm-cheatsheet

A cheat sheet of PKCS11 command to use Nitrokey HSM 2 (or other PKCS11 HSM)

cryptography hardware-security-module hsm pkcs11 smartcard

Last synced: 03 Jan 2026

https://github.com/jsign/zig-eth-secp256k1

A Zig libsecp256k1 wrapper with bells and whistles for Ethereum

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Last synced: 18 Mar 2025

https://github.com/juanbono/criptografia

Criptografia - UTN FRBA 2017

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Last synced: 26 Mar 2025

https://github.com/antonio-hickey/veil

Multi purpose cryptography tool

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Last synced: 05 Oct 2025

https://github.com/ph4r05/bitarray

Efficient bit array operations library for Python implemented in C

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Last synced: 14 Jan 2026

https://github.com/shantanu66/cryptchat

A Desktop Application made using Tkinter framework in Python for Text Chatting between indivisuals or groups which is end to end encrypted using symmetric cyrptography algorithms.

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Last synced: 07 Oct 2025

https://github.com/ericksumargo/pin

Built over Jetpack's EncryptedSharedPreferences API with less verbose syntax, efficient read/write mechanism, complex object and null default value support with compile time safety

coroutines cryptography jetpack kotlin sharedpreferences

Last synced: 09 Oct 2025

https://github.com/rub-nds/terrapin-website

This repository hosts the public website for the paper "Terrapin Attack: Breaking SSH Channel Integrity By Sequence Number Manipulation" via GitHub Pages.

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Last synced: 18 Jan 2026

https://github.com/valerauko/csele

A library to handle ActivityPub-related crypto needs.

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Last synced: 09 Oct 2025

https://github.com/maxbubblegum47/pyfind

Applied cryptography project. Unimore computer science master degree. Apple find my devices implementation in python

aes-gcm apple cryptography ecdh kdf python unimore-informatica

Last synced: 10 Oct 2025

https://github.com/faisalahmedbijoy/image_cryptography_with_autoencoders

Deep learning in image Cryptography

cryptography deep-learning image image-processing security

Last synced: 10 Oct 2025

https://github.com/lukasz-zimnoch/ipfs-market

Example repository intended to demonstrate a simple digital goods trading system powered by Ethereum smart contracts, IPFS file system and some basic cryptographic algorithms.

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Last synced: 14 Apr 2026

https://github.com/tteeoo/sest

🔑 A local command-line based password manager using AES-256 encryption.

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Last synced: 17 Feb 2026

https://github.com/carlodepieri/vcrpy-encrypt

Encrypt vcrpy cassettes so they can be safely kept under version control.

cryptography python testing unit-testing vcrpy

Last synced: 13 Oct 2025

https://github.com/dmamakas2000/cryptanalysis-python

In this project, we experiment with the use of diverse cryptographic algorithms. First, we attempt to encrypt a plaintext message using the Vigenère Algorithm and a fixed-length encryption key. Afterward, we experiment with the decryption of the produced cipher using Kasiski's Method, as well as the Index of Coincidence statistical test.

cryptography index-of-coincidence jupyter-notebook kasiski-test python vigenere-cipher

Last synced: 18 Feb 2026

https://github.com/furritos/flask-simple-crypt

Flask extension based on simple-crypt that allows simple, secure encryption and decryption for Python.

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Last synced: 24 Oct 2025

https://github.com/biglup/cardano-c

A pure C library for interacting with the Cardano blockchain. Compliant with MISRA standards and binding-friendly architecture.

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Last synced: 23 Jan 2026

https://github.com/cs-joy/cryptography

about cryptography

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Last synced: 23 Jan 2026

https://github.com/lunes-platform/ed25519-axolotl

📦 Ed25519-like signatures with X25519 keys, Axolotl-style.

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Last synced: 27 Oct 2025

https://github.com/delagen/cadesplugin

CryptoPro EDS Browser plug-in typescript implementation

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Last synced: 16 Mar 2026

https://github.com/jpkusumi/greenfieldpqc

Side step quantum threats. Level up your encryption. Future proof your code. This cryptographic library for .NET development includes NIST standardized cryptographic primitives and Kusumi-512, a novel stream symmetric cipher with a 512 bit key size for enhanced quantum resistance.

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Last synced: 06 Feb 2026

https://github.com/harsh-ps-2003/rumi

A cryptography powered privacy-preserving discovery service design for mapping distinct identifiers to IDs without revealing any information to the server!

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Last synced: 01 Mar 2025

https://github.com/buhman/cryptio

file-like interface for authenticated encryption

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Last synced: 18 Aug 2025

https://github.com/chase-moskal/pastesafe

open encryption web app

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Last synced: 17 Aug 2025

https://github.com/rusq/gonss3

Subset of Mozilla NSS enough to decrypt firefox passwords

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Last synced: 31 Mar 2025

https://github.com/helcsnewsxd/cbmc-analysis-report

Technical report on CBMC (C Bounded Model Checker) - Software Engineering II course project - Computer Science @ FAMAF (UNC)

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Last synced: 02 Jul 2025

https://github.com/rzubek/easy-cryptography

Easy, simple C# API for common cryptography operations. Wraps built-in .NET crypto libraries, but with simplified API using safe defaults. Single C# file, no extra dependencies.

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Last synced: 14 May 2026

https://github.com/loneicewolf/ciphers-python

Cypher, Cipher, Cyphers, Ciphers, cryptography, encryption, obfuscation, enciphering, deciphering - in python3

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Last synced: 23 Apr 2025

https://github.com/mewmix/sm4-xts-openssl

openssl sm4-xts & aes-xts 256 implementations for testing

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Last synced: 07 Jun 2026

https://github.com/asc8384/simple-cryptography

Simple cryptographic implementation, including TinyJambu, Grain-128AEAD, Fridrich, etc.

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Last synced: 23 Aug 2025

https://github.com/furk4nbulut/julius-caesar-cryptography-algorithm

Java program implements the Julius Caesar's Cryptography Algorithm, also known as Caesar Cipher. The Caesar Cipher is a substitution cipher where each letter in the plaintext is shifted a fixed number of places down or up the alphabet.

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Last synced: 09 Jun 2026

https://github.com/chinnanj666/message-encryption-decryption

This Python-based application provides a graphical user interface (GUI) for encrypting and decrypting messages using AES encryption.

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Last synced: 17 Jun 2025

https://github.com/dylan-lang/hash-algorithms

Cryptographic hash functions for Dylan

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Last synced: 03 Feb 2026

https://github.com/shaharashe/cryptography_modules

This repository features Python implementations of various cryptographic algorithms, including RSA, ElGamal, and Vigenère cipher. It serves as a resource for learning and experimenting with cryptographic techniques. Contributions are welcome!

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Last synced: 02 Mar 2026

https://github.com/agu3rra/pykeys

Securely store and use your API keys

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Last synced: 16 Jan 2026

https://github.com/seigtm/rsa

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

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Last synced: 20 Apr 2025

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

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

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Last synced: 22 Jan 2026

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

Implementation of Post-quantum cryptography signature protocol

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Last synced: 06 Jan 2026

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

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

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Last synced: 14 Jun 2025

https://github.com/alvarogarciapiz/pycipherhub

Conjunto de cifradores desarrollados en Python

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Last synced: 15 Mar 2025

https://github.com/sorah/xaes_gcm

Ruby implementation of XAES-256-GCM, an extended-nonce AEAD built on AES-256-GCM

cryptography ruby xaes-256-gcm

Last synced: 28 May 2026

https://github.com/lmriccardo/needham-schroeder-verification

Project for the Formal Methods In Software Development course at the University of "La Sapienza" in Master in Computer Science A.A. 2021/2022

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Last synced: 23 Aug 2025

https://github.com/kingmob/cryptopals-crypto-challenges

The Cryptopals (formerly Matasano) crypto challenges

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Last synced: 27 Oct 2025

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

Encode&Decode Morse Code

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Last synced: 25 May 2026

https://github.com/maxirmx/tip5

Tip5 hash algorithm implementation in C++

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Last synced: 29 Jun 2025

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.

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Last synced: 12 Apr 2026

https://github.com/oliverbutler/steggy

Written in Rust, features a simple cli and a client-side webapp

cli cryptography rust steganography

Last synced: 12 Mar 2026

https://github.com/dinochiesa/apigee-custompolicy-rsacrypto

This is a custom Apigee policy, implemented in Java, that performs RSA Encryption and Decryption of data or message payloads, or RSA signing of data or message payloads, or verification of such signatures.

apigee cryptography rsa

Last synced: 10 Jun 2025

https://github.com/blagojeblagojevic/sha256

SHA256 as a header library

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Last synced: 14 Jun 2025

https://github.com/piotrpsz/gost

GOST algorithm implemented in Go

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Last synced: 17 May 2025

https://github.com/transferwise/crypto

Crypto helper modules

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Last synced: 09 Apr 2025

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

:rocket: P2P Chat with asymmetric encryption

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Last synced: 15 Mar 2025

https://github.com/mohitrajain/rootctf

CTF ( Capture the flag a cyber security event ) .

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Last synced: 13 Oct 2025

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

Universal Zero Knowledge Contingent Payments (on hold)

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Last synced: 19 Apr 2026

https://github.com/saeed0xf/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 🎓

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Last synced: 01 Mar 2025

https://github.com/gunh0/whitebox_cryptanalysis

🔒 Whitebox Cryptographic Code Example

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Last synced: 25 Mar 2025

https://github.com/ml3m/cryptography-algorithms-exploration

implementations of various cryptographic algorithms, including both symmetric and asymmetric encryption, hashing, and key exchange techniques

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Last synced: 18 Jun 2025

https://github.com/r1b/cryptography

Self-study in cryptosystems

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Last synced: 08 Apr 2025

https://github.com/nexenio/rxkeystore

RxJava wrapper for the Android keystore and cryptography utilities

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Last synced: 19 May 2026

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

Caesar Cipher using JavaScript

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Last synced: 31 Mar 2025

https://github.com/dorssel/dotnet-xmss

.NET 8 implementation of XMSS.

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Last synced: 09 Apr 2025

https://github.com/tacitusxi/leskodex

LeskoDEX is a DEX with a decentralized orderbook and a custom ERC-20 ESKO token. Each user can connect to the DEX via Metamask and trade the ETH/ESKO pair. A custom chart for technical analysis is available.

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Last synced: 26 Oct 2025

https://github.com/ntdls/secure-archive

Secure Archive is a file encryption utility that provides multiple encryption algorithms, variable compression levels, secure file delete, self-extracting archives and more.

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Last synced: 27 Mar 2026

https://github.com/jean0t/passmanager

Incredible password manager made in python

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Last synced: 10 Apr 2026

https://github.com/davxy/cry

CRY crypto library

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Last synced: 09 Apr 2025

https://github.com/mobilecoinfoundation/rand

A platform abstraction layer providing a cryptographic RNG

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Last synced: 26 Jul 2025

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

NodeJS client library for the IronCore Labs Tenant Security Proxy

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Last synced: 02 Jul 2025

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/b0oml/monoalphabetic-solver

Web interface for performing monoalphabetic substitution

cryptography substitution-cipher webapp

Last synced: 10 Feb 2026

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

Client for the Tenant Security Proxy in PHP

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Last synced: 02 Jul 2025

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

A spiral cipher implementation for text encryption and decryption

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Last synced: 18 Feb 2026

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

crypto cryptocurrencies cryptocurrency cryptocurrency-exchanges cryptography

Last synced: 13 Oct 2025

https://github.com/ausaf007/multi-party-computation

Create Ethereum wallet with multi-party validation and threshold cryptography.

cryptography java multi-party-computation shamir-s-secret-sharing-scheme shamir-secret-sharing threshold-cryptography

Last synced: 04 Oct 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/harryr/stegive

Steganographic encrypted archive

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Last synced: 27 Oct 2025

https://github.com/yashraj-n/legitly

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

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Last synced: 13 Nov 2025

https://github.com/smaranjitghose/pyconfidentiality

Adding secrecy to your emails with RSA

cryptography email-sender python rsa smtp

Last synced: 03 Sep 2025

https://github.com/luffy0xcyber/cryptographie_classique

Implémentation Python des chiffrements historiques (César, Hill, Vigenère) avec explications détaillées et simples | Projet éducatif de cryptographie

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Last synced: 13 Jun 2025

https://github.com/myusuf3/siapaperwallet

Create Sia Paper Wallets

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Last synced: 05 Jan 2026

https://github.com/just-do-halee/vep

Variable-length Expansion Pass function. ( i.e. short password to long hashed password )

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Last synced: 10 Jun 2025

https://github.com/antosser/base94-rs

Base94 Encoding Library: Convert binary data to a compact text-based format using Base94 encoding. Effortlessly encode and decode data for a wide range of use cases. 🔐🔍

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Last synced: 24 Oct 2025

https://github.com/j-m-li/aes

aes s-box and lookup tables generator

aes cryptography

Last synced: 19 Apr 2026

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

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Last synced: 23 Jan 2026

https://github.com/a-farahani/tokenmanager

TokenManager is a Python GUI tool for managing PKCS#11 tokens. It supports token detection, login, RSA key generation, CSR creation, certificate import, and object listing. Built with tkinter and python-pkcs11, it simplifies token management tasks.

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