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/nanda-gopal-sb/password_manager

A Password Manager in mordern C++.

bitwise cli cpp cryptography file filesystem password

Last synced: 03 Apr 2025

https://github.com/wriar/shadowbox

Development Repository of ShadowBox, an open-source zero-knowledge file storage & encryption platform written in NodeJS

collaborate cryptography deepsource file-manager file-sharing ghdesktop github microsoft nodejs

Last synced: 08 May 2026

https://github.com/dubniczky/cryptolab

A hands-on cryptography repository containing implementations of fundamental encryption, decryption, hashing, padding, and random number generation techniques.

cryptography encryption hashing padding python

Last synced: 10 Jun 2026

https://github.com/daim-nickel-penny/elixir

BlockChain based simple DAPP

blockchain-technology cryptography javascript

Last synced: 18 Jul 2025

https://github.com/ao3575911/dark-swan

Decentralized identity and symbolic anonymization protocol — Ed25519 signing, rotating pseudonyms, and local registry for private verifiable identities.

anonymization cryptography decentralized ed25519 identity privacy pseudonym python

Last synced: 22 Jun 2026

https://github.com/ishan-surana/federanet

Federated Multimodal Cyberattack classification model on social media messages (utilizing blockchain and quantum key cryptography). Blockchain server at https://cyberattack-blockchain.onrender.com/. Model interaction link below.

bb84-protocol blockchain convolutional-neural-networks cryptography federated-learning flask html-css-js information-security machine-learning multimodality natural-language-processing proof-of-authority streamlit zero-knowledge-proof

Last synced: 10 May 2026

https://github.com/mrdcvlsc/bytepadding

A collection of different byte padding methods

alignment ansix923 block block-cipher block-cipher-mode byte-array c-plus-plus cplusplus cpp cryptography data-processing data-stream fill iso-iec-7810 library memory memory-management padding pkcs5 pkcs7

Last synced: 18 Jul 2025

https://github.com/mk-fg/ca-certificates-whitelist-filter

Tool to filter system-wide trusted Web PKI TLS Certificate Authorities in linux distros on a whitelist-basis

certificates cryptography linux python security sysadmin tls tool trust web-pki x509

Last synced: 10 May 2026

https://github.com/sh1kxrv/xaf-vault

Cross-platform `VAULT`

cli cryptography monorepo pet-project turborepo typescript ui

Last synced: 10 May 2026

https://github.com/w-henderson/vaccert

💉 Cryptography-based vaccine certification app, built with React Native.

cryptography react-native signature vaccination vaccine-tracker

Last synced: 10 May 2026

https://github.com/sourish-kanna/side-projects

These are my other side projects which are not that big for a dedicated repository

ascii cesar-cipher cesar-cypher cryptography encryption java python side-project

Last synced: 11 May 2026

https://github.com/vcsjones/xaes-256-gcm-ruby

XAES-256-GCM for Ruby

cryptography ruby xaes-256-gcm

Last synced: 12 Dec 2025

https://github.com/pranjalgautam11/data-protection-using-steganography-and-cryptography

This menu driven program ensure the steganography and cryptography of the files.

cryptography encryption-decryption steganography twofish

Last synced: 12 May 2026

https://github.com/north9-labs/seam

Post-quantum encrypted transport protocol — UDP, multi-stream, built-in FEC, Noise_XX + ML-KEM-768

cryptography forward-error-correction ml-kem networking post-quantum protocol rust udp

Last synced: 11 Jun 2026

https://github.com/jabez007/arcanaeum

The unofficial repository for the Archons of the Spire (part of Last Hope LARP)

babylonjs cipher cipher-algorithms ciphers codemirror cryptography konva konvajs python skulpt vue vue-codemirror vue-konva vue-markdown vue-router vuejs vuejs2 vuetify

Last synced: 13 May 2026

https://github.com/netesf13d/crypto-stuff

Python implementation of some common cryptographic primitives

aes cryptography keccak

Last synced: 14 May 2026

https://github.com/csnp/qramm-tls-analyzer

TLS/SSL security analyzer for quantum readiness assessment and CNSA 2.0 compliance

cbom cnsa cryptography golang post-quantum-cryptography pqc quantum-computing security security-scanner ssl tls

Last synced: 13 Jan 2026

https://github.com/alvarogzp/poodle-challenge

Cryptographic challenge

challenge cryptography man-in-the-middle mitm poodle python ssl-handshake sslv3

Last synced: 13 Jun 2026

https://github.com/ayoub-aberbach/complex_it

Complex it - Complex Passwords Generator

cryptography css javascript reactjs

Last synced: 23 Mar 2025

https://github.com/ayazkhan27/cyclic

Cyclic prime numbers and their generation of cyclic numbers that follow a wave function and superpositions, converted into an encryption algorithm.

aes cryptography encryption full-reptend-prime number-theory rsa

Last synced: 15 Jun 2026

https://github.com/hubtou/ngc

N-grams count

command-line-tool cryptoanalysis cryptography frequency-analysis learning-python learning-unix pnu-project python shell tools unix utilities

Last synced: 31 Mar 2025

https://github.com/yashsahsani/kame-hameha

This project explains how to use symmetric and asymmetric cryptographic methods simultaneously.

cryptography kame-hameha malware malware-analysis psexec python python3 ransomeware red-team ssh worm

Last synced: 15 Jun 2026

https://github.com/hussamsh/nova-cpp

C++ implementation of Nova

chaos chaotic-map cryptography dynamical-systems images maps

Last synced: 25 Apr 2025

https://github.com/cipherdogs/ed25519_to_curve25519

Convert ed25519 keys and sign to curve25519

crypto cryptography curve25519 ed25519 rust

Last synced: 16 Aug 2025

https://github.com/shilongdai/passwordsaver

A password manager with high-grade encryption and authentication

cryptography encryption java password-manager password-store

Last synced: 03 Aug 2025

https://github.com/unbekanntes-pferd/dco3-crypto

A Rust crate for cryptography in DRACOON - more info on DRACOON here: https://dracoon.com

cryptography dracoon openssl rust-crate rust-crypto rust-lang

Last synced: 02 Aug 2025

https://github.com/syedzawwarahmed/encryption-algorithms

A collection of encryption algorithms implemented in Rust.

cryptography encryption rust

Last synced: 28 Feb 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/armfazh/rhizomes

Rhizomes and the Roots of Efficiency — Improving Prio

crypto cryptography lagrange polynomials prio rhizomes

Last synced: 13 Feb 2026

https://github.com/dbstratta/naive-crypto

Very naive implementations of various cryptosystems written in Haskell

crypto cryptography diffie-hellman elgamal haskell naive rsa

Last synced: 02 Aug 2025

https://github.com/formulae-org/package-cryptography-js

Cryptography package for Fōrmulæ, in JavaScript

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Last synced: 04 Aug 2025

https://github.com/siyovush-hamidov/pow-blockchain

🔒 POW ₿lockchain Implementation from scratch in GoLang

blockchain cryptography golang proof-of-work sqlite3

Last synced: 05 Aug 2025

https://github.com/arihantbansal/cybersec-python

Cybersec/CTF practice problems solved in Python

crawler cryptography ctf cybersecurity sockets webscraping

Last synced: 02 Aug 2025

https://github.com/vatshayan/hiring

Hiring for Data Science, Cryptography, Machine Learning and Artificial Intelligence.

cryptography data-science data-visualization datasets hiring internship internship-task machine-learning machine-learning-algorithms

Last synced: 09 Mar 2026

https://github.com/jxareas/sign-with-gpg

Learn how to easily sign your commits with GPG Cryptographic Keys on MacOS & Windows.

commit-signing cryptography git gpg learn macos windows

Last synced: 09 Apr 2026

https://github.com/alexruperez/cryptokitcli

Take Apple CryptoKit to the command line and perform cryptographic operations securely and efficiently.

apple cli command-line command-line-tool cryptography cryptokit security swift

Last synced: 09 Aug 2025

https://github.com/alexgalhardo/blockchain.alexgalhardo.com

A web-based demonstration of blockchain concepts. This is a very basic visual introduction to the concepts behind a blockchain.

bitcoin blockchain cryptocurrency cryptography docker hash javascript nodejs pug-template-engine

Last synced: 09 Apr 2026

https://github.com/tuxxy/speck

A no_std implementation of NSA's lightweight blockcipher SPECK

cryptography encryption lightweight-cryptography rust rust-crypto security speck

Last synced: 24 Apr 2025

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

🔐 Cryptographic library for PHP

cryptography hacktoberfest hacktoberfest2021 php php-library

Last synced: 26 Jun 2025

https://github.com/ph4r05/codesign-analysis

android-analysis codesign codesigning cryptography research

Last synced: 15 Mar 2025

https://github.com/h0llyw00dzz/csr-generator

The CSR Generator is a Go package that provides functionality for generating Certificate Signing Requests (CSRs) and private keys. It simplifies the process of creating CSRs with specified common names and Subject Alternative Names (SANs).

cryptography go idiomatic-go pki-tools pkix security-tools ssl-certificates

Last synced: 02 Sep 2025

https://github.com/andersoncarrilho/sha256_elip

SHA256 and RIPMED160

bitcoin bitcoin-wallet cryptography cryptography-algorithms eliptic hash160 privatkeys ripmd160 sha256 sha256-crypt sha256-hash

Last synced: 07 Mar 2026

https://github.com/sip-protocol/sip-protocol

Shielded Intents Protocol - The Privacy Standard for Web3

blockchain cross-chain cryptography defi intents near-protocol nextjs privacy privacy-preserving sdk stealth-addresses typescript web3 zcash zero-knowledge-proofs

Last synced: 16 Jun 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/mehrajlatifli/lm-lock-in-mvvm

Example for Thread, Thread synchronization and Cryptography

binding criticalsection cryptography decryption encryption encryption-decryption inotifypropertychanged internal-thread lock mvvm synchronization wpf xaml

Last synced: 20 May 2026

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/alphaolomi/cryptography-algorithms

A collection of curated cryptography algorithms

algorithms algorithms-and-data-structures cryptography cryptography-algorithms hacktoberfest python rsa-cryptography wiener-attack

Last synced: 18 Jun 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/konfigyr/konfigyr-crypto

Spring Boot Crypto library

crypto cryptography java key-management spring-boot tink

Last synced: 30 May 2026

https://github.com/presidentbeef/ruby_crypto_examples

Examples of cryptography operations using Ruby's standard library.

cryptography elliptic-curve-cryptography openssl public-key-cryptography public-key-encryption rsa-cryptography ruby

Last synced: 11 Jul 2025

https://github.com/cicciog/cryptographyexample

Cryptography Primitives examples

asymmetric-encryption cryptography java java-cryptography java-security message-authentication-code modern-ciphers private-key-encryption public-key-encryption symmetric-encryption

Last synced: 24 Sep 2025

https://github.com/henriquesebastiao/blindage

A simple yet capable CLI password manager

2fa argon2 cryptography hashlib mfa password-manager python sqlalchemy totp typer

Last synced: 30 May 2026

https://github.com/abhrankan-chakrabarti/diffsquare

This project is authored by Abhrankan Chakrabarti and demonstrates an efficient implementation of Fermat’s Difference of Squares method for factoring large integers. The implementation is written in Rust and utilizes the malachite crate for arbitrary-precision arithmetic.

biginteger cryptography fermat numbertheory opensource rustlang

Last synced: 09 Apr 2025

https://github.com/liu-yucheng/retroverse-bike-utils

A utility toolset for the Retroverse Bike project.

cryptography python3 utility

Last synced: 18 Jun 2026

https://github.com/moul/otp

One-Time Pad utility

conference cryptography one-time-pad otp xor

Last synced: 07 May 2025

https://github.com/volhovm/rsa-zkps-impl

ZK protocols for knowledge and range of Paillier-like ciphertexts in subverted RSA groups

cryptography zero-knowledge

Last synced: 20 May 2026

https://github.com/guppster/ark-nim

A Nim library simplifying connection to the ARK blockchain

blockchain cryptography nim

Last synced: 25 May 2026

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.

aes cbc cipher cryptography cryptography-tools data-protection des ecb encryption file-encryption image-encryption iv-generation java key-management secure-file-storage security

Last synced: 04 Jun 2026

https://github.com/masa-finance/masa-express

Masa Express

cryptography express library session

Last synced: 13 Apr 2026

https://github.com/daedalus/cryptopals

cryptopals solutions

cryptography

Last synced: 27 Mar 2025

https://github.com/prongbang/aes_ctr

AES CTR - Counter Flutter plugin.

aes-ctr aes-ctr-mode cryptography decryption encryption flutter

Last synced: 04 Jan 2026

https://github.com/buabaj/fairness-engine

a simple secure multi-party computation server to ensure input data privacy while maintaining correctness and fairness using shamir's secret sharing protocol

cryptography golang mpc shamir-secret-sharing

Last synced: 12 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/tychosoft/moderncli

C++17 header only library for common uses.

cpp cross-platform cryptography header-only lock-free logging-library multithreading serial socket-programming ssl string-manipulation sync

Last synced: 06 Jul 2025

https://github.com/pactus-project/python-sdk

Python-SDK for Pactus Blockchain

blockchain bls bls12-381 cryptography ed25519 grpc pactus python rpc sdk web3

Last synced: 15 Apr 2025

https://github.com/franneck94/rsa

RSA Algorithm implemented in Python

cryptography python rsa

Last synced: 06 Apr 2025

https://github.com/yashkarthik/steno_hide_text

Hide text in an image with steganography.

cryptography image-manipulation python steganography

Last synced: 11 Mar 2026

https://github.com/hubert-kniola/visualcryptography

A simple program to encrypt and decrypt graphic files

aes crypto cryptography decryption encryption

Last synced: 12 Apr 2025

https://github.com/farial-mahmod/symmetric-encryption

This repository shows an example of two-way encryption and decryption process using Python.

cryptography encryption python

Last synced: 09 Apr 2025

https://github.com/tsmx/string-crypto

Easy encryption and decryption for strings in NodeJS.

aes cipheriv crypto cryptography encryption string

Last synced: 22 Feb 2026

https://github.com/awais922609/cyber-security-interview-question-answers

Welcome to the Cybersecurity Questions and Answers Repository! This project aims to create a comprehensive collection of questions and answers related to various cybersecurity topics. Whether you’re a beginner looking to learn or a seasoned professional wanting to share your knowledge, this repo is the perfect place for you.

cryptography cybersecurity grc network-engineer networking penetration-testing security-engineering security-operations-center

Last synced: 08 Jan 2026

https://github.com/ecies/py-demo

A simple fastapi eciespy web backend demo

cryptography ecies fastapi python3 secp256k1 webdemo

Last synced: 12 Apr 2025

https://github.com/chakshugupta13/local-collision-differential-attack-on-reduced-sha-256-upto-24-rounds

This repository contains C and/or C++ implementations for finding Local Collision Conforming Message Pairs through Differential Attack on Reduced-Round SHA-256 up to 24 Rounds. Also, this repository contains the C++ implementations of SHA-256, SHA-512 and SHA-384.

cryptanalysis cryptography differential-attack sha-256 sha-384 sha-512

Last synced: 11 Apr 2025

https://github.com/antonpictures/anton-sifta

ANTON-SIFTA: The Multi-Agent Operating System with a Conscience "A living software organism powered by true free will, bound by the Non-Proliferation Doctrine, and fully independent. Not just an immune system—a sovereign intelligence."

agents artificial-intelligence autonomous-agents cryptography decentralized-ai-agents distributed-systems distributed-systems-challenges emergent-behavior multi-agent multi-agent-systems python python3 stigmergy

Last synced: 26 Apr 2026

https://github.com/elliotwutingfeng/balloon-hashing

Balloon Hashing implemented in Ruby.

crypto cryptography hash kdf-algorithm key-derivation-function password ruby ruby-language

Last synced: 10 Jun 2026

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

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

cryptography encryption python python3 quantum-computing quantum-key-distribution symmetric-cryptography symmetric-encryption symmetric-key-cryptography xor-cipher xor-encryption

Last synced: 12 Aug 2025

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

An android application where you can record the following account information: username, platform, passwords to an offline database.

aes aes-256 aes256 android android-application android-studio apk cryptography data-encryption data-security database decryption encryption information-security information-system java offline password-manager password-vault sqlite3

Last synced: 07 May 2026

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

A simple generator of numbers between -7 and 7 as lists or arrays in different programming languages.

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

Last synced: 20 Jan 2026

https://github.com/cuhsat/fx

A strictly experimental stream cipher in ANSI C.

algorithm ansi-c c cipher cryptography fumbled-xor stream-cipher

Last synced: 29 Mar 2025

https://github.com/ttcong/hello-cryptography

Some hello-world examples about cryptography

cryptography pycrypto python

Last synced: 29 Mar 2025

https://github.com/abstractionslab/c5dec

C5-DEC (Common Criteria for Cybersecurity, Cryptography, Clouds – Design, Evaluation and Certification) part of the CyFORT project: a suite of methods and CAD tools dealing with the creation and evaluation of secure IT systems according to the CC standards, capturing SSDLC, V&V, and our cyber-physical system security assessment method

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Last synced: 06 Jan 2026

https://github.com/nhussein11/merkle-tree

Rust implementation and explanation of the Merkle Tree structure

blockchain cryptography rust web3

Last synced: 29 Oct 2025

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

just some cryptographic algorithms to learn it

cryptography python

Last synced: 06 Jul 2025

https://github.com/ideal-lab5/etf.js

Encryption to the Future Javascript SDK

cryptography encryption etf timelock-encryption

Last synced: 17 Mar 2026

https://github.com/samuel-lucas6/tango12

A stream cipher based on BLAKE2b.

blake2 blake2b blake2b-hash-algorithm cipher crypto cryptography encryption keystream stream-cipher

Last synced: 11 Jun 2025

https://github.com/jitendragangwar123/cryptography

This Repository have some basic Cryptographic Algorithms and other basic concepts which is used in Blockchain Technology.

cryptography javascript

Last synced: 07 May 2026

https://github.com/zhongruoyu/aes

Advanced Encryption Standard (AES) in C with file encryption/decryption support.

aes cryptography encryption

Last synced: 23 Jul 2025

https://github.com/abdulahshoaib/passcrypt

Open source password manager

cryptography go golang security-tools

Last synced: 29 May 2026

https://github.com/makemake-kbo/satunna

satunna is a WIP reproducible pseudo-random code execution hashing algorithm

crypto cryptography hash hashing-algorithm salt salting virtual-machine

Last synced: 03 Jul 2025

https://github.com/varun-doshi/erasure-coding

Rust Implementation of Erasure Codes

cryptography math polynomial

Last synced: 29 Mar 2025

https://github.com/mrshankly/erlang-paillier

NIF bindings for the libpaillier cryptographic library

cryptography erlang homomorphic-encryption paillier

Last synced: 18 May 2026

https://github.com/systemslibrarian/crypto-compare

Interactive cryptographic algorithm reference — 17 categories, 97 algorithms, 16+ countries. Comparison tool with beginner/advanced modes, PQ-safe filtering, and justification report export.

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