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/jedisct1/as-crypto

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Last synced: 09 May 2026

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.

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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

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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.

aes-encryption cryptography desktop-application flask-api mongodb python tkinter

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/messsimo/crypto-search

App for Crypto House which show live crypto coin information

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Last synced: 25 Feb 2026

https://github.com/daniel-boll/zealot

Be Hideous Before Zeal Cease Zealotry.

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Last synced: 10 Oct 2025

https://github.com/christoffercarlsson/autograph

The Autograph Protocol

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Last synced: 18 Oct 2025

https://github.com/myusuf3/siapaperwallet

Create Sia Paper Wallets

cryptography paperwallet sia siacoin

Last synced: 05 Jan 2026

https://github.com/dev-sire/algopython

This repository serves as a comprehensive collection of Python code related to data structures, algorithms, and cryptography. It includes solutions to daily LeetCode problems and various cryptographic implementations

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Last synced: 10 Apr 2025

https://github.com/z1skgr/rsa-crypto

Cryptographic algorithm using openssl

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Last synced: 27 Jan 2026

https://github.com/sheroz/rsa

Samples of RSA (Rivest–Shamir–Adleman) asymmetric cipher implementations in Rust

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Last synced: 04 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/messagemedia/webhooks-demo

Set of scripts to demonstrate the use of MessageMedia's webhooks

cryptography messaging sms webhooks

Last synced: 02 Apr 2025

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

Tanker client-side encryption SDK for Rust

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Last synced: 09 Apr 2025

https://github.com/vaithak/birthday-paradox-simulation

A simulator of the birthday paradox problem

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Last synced: 19 Oct 2025

https://github.com/nning/vigenere_jorin

Quick POC of an idea for a Vigenere variant, my 6 year old son inspired

cryptography vigenere

Last synced: 22 Jul 2025

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

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

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Last synced: 15 Apr 2025

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

Cryptography projects and algorithms in Python

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Last synced: 25 Aug 2025

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

Caesar Cipher using JavaScript

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Last synced: 31 Mar 2025

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/saahen-sriyan-mishra/camouflage-shield

A full stack windows form application for sensitive image storing in encrypted format using symmetric key cryptography, and user data storing/securing using hash algorithms.

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Last synced: 07 May 2025

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.

cryptography doubleratchet encryption perfect-forward-secrecy pfs ratchet

Last synced: 14 Jun 2025

https://github.com/davidbuchanan314/roll13

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

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Last synced: 22 Aug 2025

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

package secure-token

cryptography pypi-packages python secure-token

Last synced: 13 Apr 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/ytisf/aasdfg

Create a truly random, en-masse, random seed using your webcam's noise. Locally.

cryptography entropy random-generation ssl-certificates

Last synced: 14 Jun 2025

https://github.com/danieltoader/php-crypttor

A simple php library to deal with encrypting and decrypting strings using OpenSSL or MCrypt

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Last synced: 01 Sep 2025

https://github.com/unclerus/regnupg

Python GnuPG wrapper

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Last synced: 03 Apr 2025

https://github.com/ph4r05/zipstream

ZIP archive tampering on the fly library

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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/antonmeep/system_random

Minimal Ada library to retrieve random data from system sources

cryptography random security

Last synced: 23 Feb 2026

https://github.com/lovasoa/sha_hashes

Collection of sha hashes of common passwords

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Last synced: 28 Jan 2026

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/kingmob/cryptopals-crypto-challenges

The Cryptopals (formerly Matasano) crypto challenges

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Last synced: 27 Oct 2025

https://github.com/defucc/hashkeys

Reactive Noble cryptography for p2p identity

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Last synced: 20 Jan 2026

https://github.com/skyf0l/discrete-logarithm

Fast discrete logarithm solver in Rust

cryptography discrete-logarithm number-theory

Last synced: 11 Oct 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

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Last synced: 28 Apr 2025

https://github.com/cupcakearmy/occulto

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

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Last synced: 15 Apr 2025

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/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 🎓

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

Last synced: 01 Mar 2025

https://github.com/copyleftdev/tls_info

cli tool to check TLS version , and cypher

cryptography golang security-tools tls-cipher

Last synced: 31 May 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/agu3rra/pykeys

Securely store and use your API keys

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Last synced: 16 Jan 2026

https://github.com/ngirimana/rsa

RSA algorithm is asymmetric cryptography algorithm. Asymmetric actually means that it works on two different keys i.e. Public Key and Private Key. As the name describes that the Public Key is given to everyone and Private key is kept private.

cryptography css3 html5 network-security rsa

Last synced: 07 May 2026

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

Study of bitcoin elliptic curve cryptography (ECC)

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Last synced: 07 Apr 2025

https://github.com/erhant/polenta

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

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Last synced: 06 Feb 2026

https://github.com/gotz1480/cryptography

Cryptography projects and algorithms in Python

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Last synced: 07 Apr 2025

https://github.com/namecoin/certinject

Inject certificates into Windows CryptoAPI trust store, with EKU and name constraints.

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Last synced: 27 Jan 2026

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

open encryption web app

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Last synced: 17 Aug 2025

https://github.com/i-umairkhan/ecdsa_node

Transactions via ECDSA cryptography algorithm.

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Last synced: 14 Apr 2026

https://github.com/icaropires/cryptography

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Last synced: 26 May 2026

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

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Last synced: 23 Jan 2026

https://github.com/raymondfx/uptechafrica

UpTechAfrica East Africa Blockchain Hackathon - Whistleblower Solution

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Last synced: 11 Mar 2025

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

Java library to interact with Moera decentralized social network

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Last synced: 23 Feb 2026

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

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Last synced: 13 Oct 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/mohitrajain/rootctf

CTF ( Capture the flag a cyber security event ) .

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Last synced: 13 Oct 2025

https://github.com/obaskly/anonymouschat

Secure Anonymous Chat

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Last synced: 19 Jan 2026

https://github.com/mrcarb0n/zipsignerust

High-performance, memory-safe cryptographic signing and verification for Android ZIP archives.

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Last synced: 24 May 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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Last synced: 04 Jan 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/buhman/cryptio

file-like interface for authenticated encryption

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Last synced: 18 Aug 2025

https://github.com/jhnwnstd/suxotin

Python script that distinguishes vowels from consonants using Suxotin's algorithm.

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Last synced: 31 May 2026

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

An RSA encryption and uuencoding/uudecoding application from 2002.

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Last synced: 09 Oct 2025

https://github.com/mashatan/go-cryptoconditions

Crypto-Conditions in Go

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Last synced: 14 Jan 2026

https://github.com/delthas/libsilence-java

Lightweight API for the Silence protocol

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Last synced: 06 Jun 2026

https://github.com/8hantanu/cryp2o

Watermark based image encryption

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Last synced: 11 Aug 2025

https://github.com/sudiptab2100/cryptographicalgorithms

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

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Last synced: 07 Jul 2025

https://github.com/gunh0/whitebox_cryptanalysis

🔒 Whitebox Cryptographic Code Example

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Last synced: 25 Mar 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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