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/john-lin/crypt

A simple CLI tool for Encrypt/Decrypt files.

aws-s3 cryptography

Last synced: 18 May 2026

https://github.com/remiblancher/post-quantum-pki

Quantum-Safe X.509 PKI with PQC & Hybrid Certificates in Go

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Last synced: 27 Jan 2026

https://github.com/rajput-hemant/cryptography

A handy Crypto CLI for exploring cryptographic algorithms learned in university. Dive into the world of cryptography with ease! 🔐✨

bun cli crypto cryptography

Last synced: 19 May 2026

https://github.com/embetrix/meta-satobox

Satobox is an open-source, Yocto-based, privacy-focused and secure bitcoin full node solution designed for embedded linux devices.

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Last synced: 01 Nov 2025

https://github.com/humanjavaenterprises/nostr-nsec-seedphrase

The nostr-nsec-seedphrase repository offers a TypeScript library that converts Nostr nsec keys into mnemonic seed phrases, enhancing the readability and management of keys within Nostr applications. This approach mirrors Bitcoin's use of seed phrases, emphasizing the importance of secure storage and careful handling of these keys.

bitcoin cryptography decentralized-protocols digital-signatures key-management mnemonic-seed-phrases nostr public-key-infrastructure security

Last synced: 31 Aug 2025

https://github.com/denselance/hight-python

HIGHT block cipher implementation in Python3 based on original paper by Hong et al. Includes the encryption and decryption functions for HIGHT.

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Last synced: 31 Dec 2025

https://github.com/daflh/deriving

Derives address and private key from mnemonic phrase for Bitcoin and other altcoins

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Last synced: 19 May 2026

https://github.com/musooo/frequency-analysis

cryptography

Last synced: 04 Apr 2025

https://github.com/christoffercarlsson/stedy

An easy-to-use cryptography library for JavaScript

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Last synced: 13 Sep 2025

https://github.com/mattlianje/enigma

CLI Tool ... A pure FP, M3 Enigma machine as used by the Germans from 1934-45.

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Last synced: 28 Mar 2025

https://github.com/franneck94/rsa

RSA Algorithm implemented in Python

cryptography python rsa

Last synced: 06 Apr 2025

https://github.com/aeondave/cryptonite-go

Minimal, dependency-free cryptography library in Go

cryptography cypher go purego tiny

Last synced: 16 Jan 2026

https://github.com/osiris-unnefer/rsa_utils

RSA private key with N & P and Q

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Last synced: 29 Mar 2025

https://github.com/dannywillems/ocaml-bls12-381

Fast BLS12-381 implementation in OCaml

bls-signature bls12-381 blst cryptography fft hash-to-curve ocaml pairing pairing-cryptography poseidon rescue signatures tezos zero-knowledge

Last synced: 31 Oct 2025

https://github.com/daedalus/cryptopals

cryptopals solutions

cryptography

Last synced: 27 Mar 2025

https://github.com/sdanielsilva/simpleimageencryptor

A versatile file encryption tool that securely encrypts and decrypts image and other file types with AES and DES algorithms, supporting multiple modes and easy key management.

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Last synced: 04 Jun 2026

https://github.com/aveygo/jsnewhope

Javascript implementation of scottwn/PyNewHope, a post-quantum cryptographic scheme

cryptography javascript key-exchange-algorithms newhope quantum quantum-computing

Last synced: 18 Mar 2025

https://github.com/jacob-c-smith/crypto

Cross platform cryptography and hashing functions

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Last synced: 04 Mar 2025

https://github.com/danielost/sha-1

SHA-1 (Secure Hash Algorithm 1) implementation.

cryptography secure-hash-algorithm sha-1

Last synced: 13 May 2025

https://github.com/10d9e/fastmerkle

Golang Implementation of Streaming Merkle Root, Proof, and Verify (single leaf) from Luke Champine's paper

cryptography merkleproof merkletree

Last synced: 12 Apr 2025

https://github.com/tomerh2001/git-crypt-pipe

Decrypts git-crypt encrypted repositories in Bitbucket Pipelines.

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Last synced: 03 Mar 2025

https://github.com/matias-gonz/rusty-curves

Elliptic curve implemented using bare rust and math

cryptography elliptic-curves rust

Last synced: 20 May 2026

https://github.com/lemon-mint/highcrypt

A crypto stack built with a proven cryptographic algorithm

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Last synced: 20 May 2026

https://github.com/mehrajlatifli/lm-lock-in-mvvm

Example for Thread, Thread synchronization and Cryptography

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Last synced: 20 May 2026

https://github.com/sebastienrousseau/cmn

A Rust library for accessing a collection of mathematical and cryptographic constants

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Last synced: 28 Mar 2025

https://github.com/andersoncarrilho/sha256_elip

SHA256 and RIPMED160

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Last synced: 07 Mar 2026

https://github.com/10d9e/rs-fast-merkle

Rust Implementation of Streaming Merkle Root, Proof, and Verify (single leaf) from Luke Champine's paper: Streaming Merkle Proofs within Binary Numeral Trees

cryptography merkleproof merkletree rust

Last synced: 22 Jul 2025

https://github.com/maymeow/php-cryptography

🔐 Cryptographic library for PHP

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Last synced: 26 Jun 2025

https://github.com/fbielejec/zksnarks-notes

notes & explorations of various zero knowledge protocols

cryptography elliptic-curves pairings snarks zero-knowledge

Last synced: 12 Jan 2026

https://github.com/hamarshehmhmd/passgenerator

PassGen is a simple command-line password generator written in Python. It allows users to customize password criteria by toggling lowercase and uppercase letters, digits, and special characters on and off. PassGen uses the secrets module to generate cryptographically secure random passwords of variable length.

command-line cryptography password-generator python security

Last synced: 29 Mar 2025

https://github.com/openzebra/argon2.pure.js

A pure TypeScript/JavaScript implementation of the Argon2

argon2 argon2id cryptography hash hashing password-hash

Last synced: 07 Mar 2026

https://github.com/virtualox/get-randomhex

Adjustable Random Hex String Generator.

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Last synced: 08 Apr 2026

https://github.com/velipso/staticvault

Encrypt, host, and share files on a static website

browser-app cli-tool cryptography encryption file-encryption frontend javascript nodejs privacy secure-storage self-hosted static-site vault web-security zero-knowledge

Last synced: 22 Jul 2025

https://github.com/minapecheux/medusa

A small encoding/decoding Python lib.

cryptography python utility

Last synced: 02 Nov 2025

https://github.com/cryptimeleon/android-demo

An example project with instructions on how to use cryptimeleon on android.

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Last synced: 12 Jan 2026

https://github.com/divshekhar/decipher

Breaking transposition cipher using metaheuristic algorithms

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Last synced: 02 Nov 2025

https://github.com/vancenceho/50.005-computer-system-engineering

50.005 Computer System Engineering - Labs & Programming Assignments

computer-systems-and-networks computer-systems-engineering cryptography networks operating-systems

Last synced: 05 Jul 2025

https://github.com/mohammedmehdio/caesarjaw-cpp

CaesarJaw provides encryption and decryption functionalities using a simple shift cipher (Caesar cipher). It allows users to: ✅ Encrypt text 📝 ✅ Decrypt text 🔑 ✅ Determine the shift key 🔎 ✅ Attempt decryption without a known key 💡

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Last synced: 23 Jul 2025

https://github.com/mindreadio/qsafecrypto

A secure and user-friendly open-source cryptography library, offering modern cryptographic APIs that are resistant to quantum attacks. Protect your data with ease and confidence using advanced quantum-resistant algorithms.

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Last synced: 08 Apr 2026

https://github.com/oxion7/rc4-rust

RC4 algorithm in rust

algorithm cipher cryptography stream-cipher

Last synced: 14 Jun 2026

https://github.com/odhithsen/hashvault

🔐"HashVault" is an all-in-one locally installed password manager that keeps users' passwords and other sensitive information and credentials safe for all at the convenience of a single master key.

cryptography java javafx password-manager

Last synced: 02 Jan 2026

https://github.com/wannaverseofficial/kmp-crypto

Common cryptography library for Kotlin Multiplatform

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Last synced: 21 May 2026

https://github.com/kurosci/qrypto

The post-quantum cryptography library in pure Rust.

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Last synced: 22 Mar 2025

https://github.com/dannweeeee/zk-encode

Coding Bootcamp about ZK Proof Theory and Building

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Last synced: 06 Sep 2025

https://github.com/crownedgrouse/preach

[WIP] Phi base Random Encoder Aimed for Cryptography Hardening

cryptography obfuscation rust

Last synced: 06 Apr 2025

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

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

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Last synced: 20 Jan 2026

https://github.com/slayernominee/cryptographic-algorithms

just some cryptographic algorithms to learn it

cryptography python

Last synced: 06 Jul 2025

https://github.com/jakubvojvoda/rsa-cryptography

Simple RSA implementation using GMP

cpp cryptography decryption encryption gmp rsa

Last synced: 14 May 2025

https://github.com/HK-Transfield/python-quantum-key-exchange-simulator

A simple program to simulate a Quantum Key Exchange (QKE) algorithm, written in Python3.

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Last synced: 12 Aug 2025

https://github.com/ergl/sss

Basic Shamir's Secret Sharing

cryptography pony-language shamir shamir-secret-sharing

Last synced: 06 Feb 2026

https://github.com/sandeep-shaw10/cshb-model

This project aims to develop a secure and efficient model for end-to-end encrypted data transfer between a client and server, with a focus on promoting data integrity via hybrid blockchain

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Last synced: 06 Apr 2025

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

TypeScript (or JavaScript) library to interact with Moera decentralized social network

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Last synced: 06 Apr 2025

https://github.com/max9836/sniper-cryptography

This is a command-line encryption and decryption tool leveraging military-grade encryption standards. It is lightweight, easy to use, and optimized for secure data operations.

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Last synced: 20 Jun 2026

https://github.com/gdibble/udacityrocks

Udacity Coursework

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Last synced: 08 Apr 2026

https://github.com/starone01/phrasenux

PhraseNUX is a command-line password manager and a command-line password generator specially made for Linux. It's a powerfull as well as secure command-line application.

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Last synced: 30 Mar 2025

https://github.com/volkansah/how-to-kill-crypto-money

Mr.Robot -> How to Kill Crypto Money? This document demonstrates how to use Python and the mnemonic library to generate a seed phrase and derive a private key. This code is intended for demonstration purposes only and should never be used with real funds or your actual hardware wallet.

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Last synced: 09 Feb 2026

https://github.com/varun-doshi/modc

Rust Library for Finite Field Arithmetic

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Last synced: 10 Jun 2026

https://github.com/dk14/mega-peers

A p2p fact sharing network

cryptography oracle p2p p2p-exchange p2p-network trading wolfram

Last synced: 22 May 2026

https://github.com/milan-sedivy/confidential_multi_vote_system

This project demonstrates principles of a protocol outlined in my master thesis. The protocol is a superset of the Practical Multi-Candidate Election System (Baudron et. al 2001). It focuses on allowing the user to vote for multiple choices and to have multiple votes (an example of a shareholder meeting is implemented here)

anonymity cryptography end-to-end-encryption homomorphic-encryption privacy voting-application

Last synced: 06 Dec 2025

https://github.com/CorvidLabs/ts-algochat

🔐 TypeScript implementation of AlgoChat - Encrypted messaging on Algorand

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Last synced: 08 Mar 2026

https://github.com/jordanwelsman/jutils

A Python package of useful tools and utilities.

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Last synced: 22 May 2026

https://github.com/arthursudbrackibarra/t2-seguranca-de-sistemas

Trabalho 2 de Segurança de Sistemas.

cryptography java rsa security

Last synced: 22 Mar 2025

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

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

cryptography data-sharing keyknox sdk

Last synced: 23 Jul 2025

https://github.com/samdney/research-sites

List of useful websites for math, algebra, number theory, cryptography, online security and privacy research.

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Last synced: 22 May 2026

https://github.com/ashutoshvarma/cryptopals

Challenges from https://cryptopals.com/

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Last synced: 23 Jul 2025

https://github.com/hanzopgp/steganography

Cryptography project.

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Last synced: 29 May 2026

https://github.com/simon-greatrix/sec-prng

Secure random number generation

cryptography java prng security

Last synced: 12 Jan 2026

https://github.com/z-40/microaes

aes cryptography python-3

Last synced: 03 Jan 2026

https://github.com/super-lou/hack_adobe-cc_2024-

new hack anti hack adobe crack 20024

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Last synced: 25 Jul 2025

https://github.com/badkeys/miscscripts

Misc helper and analysis scripts created during the development of badkeys

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Last synced: 18 Feb 2026

https://github.com/shehand/chain

Block-chain in one place

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Last synced: 25 Jul 2025

https://github.com/magical/go-acorn

Go implementation of the ACORN-128 authenticated encryption scheme

cryptography

Last synced: 25 Jul 2025

https://github.com/subatomicplanets/shieldmessenger

A simple end-to-end encrypted messenger

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Last synced: 10 May 2026

https://github.com/phma/wring-twistree

Whole-message cipher and tree hash

cipher-algorithm cryptography hashing-algorithm

Last synced: 18 Feb 2026

https://github.com/janbrohl/hashcrypto

Hash-Based Crypto Experiment

cryptography python

Last synced: 09 Sep 2025

https://github.com/frankodoom/crypto.net

:lock: :key: :policeman: Pasword Hashing based on System.Security.Cryptography and OBVIEX

cryptography csharp hashing-algorithm password-hash system-security

Last synced: 07 Nov 2025

https://github.com/elichai/chacha20

chacha20 chacha20-poly1305 cryptography rust

Last synced: 26 Jul 2025

https://github.com/i2rys/pssl

Powerful shuffle & unshuffle libary.

cryptography key powerful shuffle unshuffle

Last synced: 18 Sep 2025

https://github.com/webceyhan/vite-chain

ViteChain - Blockchain Demo

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Last synced: 09 Apr 2026

https://github.com/swaechter/pkcs11

A purely Java based PKCS11 library based on project Panama/FFI/FFM - no JNI

cryptography iaik java pkcs11

Last synced: 23 May 2026

https://github.com/h0llyw00dzz/fiber2fa

This is a custom 2FA (Two-Factor Authentication) middleware for the Fiber web framework. It provides a secure and easy-to-use solution for implementing 2FA in Fiber applications. The middleware supports TOTP (Time-based One-Time Password) authentication and offers customizable configuration options.

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Last synced: 19 Sep 2025

https://github.com/johnbasrai/rc5-cbc

RC5 Symmetric Block Cipher in Rust

cryptography

Last synced: 28 Jul 2025

https://github.com/nilsmt/periodic-encryption

Homemade package to encrypt text using the periodical table of elements and vigenere cipher

chemical-elements cryptography encryption-decryption periodic-table-of-elements python selfmade vigenere-cipher

Last synced: 19 Feb 2026

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

Secure communication utilizing a Proof of Identity signature and encrypted messages.

cryptography messaging

Last synced: 28 Jul 2025

https://github.com/heliomarpm/cryptoh

A clean and easy-to-use cryptography utility library for Node.js, built on top of the native crypto module.

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Last synced: 28 Jul 2025

https://github.com/iscc/iscc-crypto

ISCC Signing & Verification

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Last synced: 09 Apr 2026

https://github.com/supermarcel10/cryptographicanalysisofsha2

Comparative benchmark of SMT solver effectiveness in cryptographic hash collision discovery for SHA-2 algorithms.

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Last synced: 30 Jul 2025

https://github.com/unknnownnn/ctf-swiss-army-knife

An All in One program for solving CTF challenges

cryptography ctf ctf-tools cyber-forensics cybersecurity-tools hexdump-viewer pyqt6 python steganography windows

Last synced: 31 Jul 2025

https://github.com/virgilsecurity/demo-twilio-sms-net

A simple Net Console application that demonstrates how to send encrypted message via SMS.

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Last synced: 31 Jul 2025

https://github.com/aaron-akhtar/crypto

Learning crypto for future projects.

basic crypto cryptography encryption java

Last synced: 01 Aug 2025

https://github.com/texadactyl/cloaking.py

Pythonic password-based security of a single file or a single file system archive file.

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Last synced: 01 Aug 2025

https://github.com/azrod/cryptio

cryptio is a modern Go library for secure password-based encryption and decryption, featuring Argon2id key derivation and AES-GCM. Choose your desired security level—Standard, Medium, or High—for optimal protection and performance balance.

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