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/hmxustin/pybchain

Реализация блокчейна, работающего по протоколу PoW

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Last synced: 26 Jan 2026

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

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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/kingmob/cryptopals-crypto-challenges

The Cryptopals (formerly Matasano) crypto challenges

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Last synced: 27 Oct 2025

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

Tanker client-side encryption SDK for Ruby

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Last synced: 09 Apr 2025

https://github.com/thomasdesr/minisign-action

Github action to sign and verify minisign/signify signatures

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Last synced: 05 Jan 2026

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

Crypto-Conditions in Go

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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.

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Last synced: 07 Oct 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/dsprenkels/sss-swift

Swift bindings for my Shamir secret sharing library

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Last synced: 12 Jul 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/piotrpsz/gost

GOST algorithm implemented in Go

cryptography go gost

Last synced: 17 May 2025

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

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

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Last synced: 18 Mar 2025

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

Lightweight API for the Silence protocol

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Last synced: 06 Jun 2026

https://github.com/uncomputable/tackling-bulletproofs

In-depth survey into what Bulletproofs are and how they work

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Last synced: 19 Mar 2026

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.

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Last synced: 07 Oct 2025

https://github.com/idriz4work/htb

Hack The Box (HTB) is an online platform for practicing ethical hacking and cybersecurity skills through real-world challenges and virtual labs.

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Last synced: 18 Feb 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/gerhalt/cryptopals

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

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Last synced: 13 May 2026

https://github.com/myusuf3/siapaperwallet

Create Sia Paper Wallets

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Last synced: 05 Jan 2026

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/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/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/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/smaranjitghose/pyconfidentiality

Adding secrecy to your emails with RSA

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Last synced: 03 Sep 2025

https://github.com/crnobog69/polychaos

PolyChaos 🔐 | систем шифровања - encryption system

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Last synced: 06 Feb 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/alvarogarciapiz/pycipherhub

Conjunto de cifradores desarrollados en Python

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Last synced: 15 Mar 2025

https://github.com/guillaumebouchetepitech/wasm-cryptopp-as-module

Basic WebAssembly port of the open source cryptography library libCrypto++

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Last synced: 11 Apr 2026

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

cryptography hash-algorithm rust tls

Last synced: 31 Mar 2025

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/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/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/marcode24/criptografia-rsa

🔐 This is a cryptography project testing, using RSA criptography

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Last synced: 11 Apr 2026

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/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/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/asc8384/simple-cryptography

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

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Last synced: 23 Aug 2025

https://github.com/channeladam/opaque.net

DON'T STORE PASSWORDS! This is a .NET 5 / Core implementation of the OPAQUE protocol - a 2021 successor to the Secure Remote Password (SRP) protocol. OPAQUE is an Asymmetric Password Authenticated Key Exchange (aPAKE) protocol that provides password authentication and mutually authenticated key exchange in a client-server setting without relying on PKI and without disclosing passwords to servers or other entities other than the client machine.

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Last synced: 10 Oct 2025

https://github.com/transferwise/crypto

Crypto helper modules

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Last synced: 09 Apr 2025

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

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

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Last synced: 15 May 2025

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

Be Hideous Before Zeal Cease Zealotry.

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Last synced: 10 Oct 2025

https://github.com/anvilco/node-encryption

RSA and AES Encryption helpers

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Last synced: 04 Jul 2025

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

open encryption web app

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Last synced: 17 Aug 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.

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Last synced: 15 May 2025

https://github.com/obaskly/anonymouschat

Secure Anonymous Chat

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Last synced: 19 Jan 2026

https://github.com/buhman/cryptio

file-like interface for authenticated encryption

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Last synced: 18 Aug 2025

https://github.com/icaropires/cryptography

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Last synced: 26 May 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/tangle-network/anonima

A threshold signature oracle node.

cryptography

Last synced: 14 Sep 2025

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

Caesar Cipher using JavaScript

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Last synced: 31 Mar 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/agu3rra/pykeys

Securely store and use your API keys

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Last synced: 16 Jan 2026

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

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

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Last synced: 19 Jan 2026

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/h-alice/python-ecc-keyexchange

A simple PoC for ECC key exchange in Python.

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Last synced: 12 Oct 2025

https://github.com/juri/fernet

Fernet cryptography format implementation in Swift

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Last synced: 12 Oct 2025

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

Cryptographic algorithm using openssl

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Last synced: 27 Jan 2026

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/ytisf/aasdfg

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

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Last synced: 14 Jun 2025

https://github.com/antonmeep/system_random

Minimal Ada library to retrieve random data from system sources

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Last synced: 23 Feb 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