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: 2026-07-06 00:07:00 UTC
JSON Representation

https://github.com/sovereignbase/cryptosuite

JS/TS runtime-agnostic, quantum-safe, and agile cryptography toolkit with a declarative API for cipher messaging, message authentication, digital signatures, key agreement, and identifiers.

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Last synced: 17 Apr 2026

https://github.com/akshdzn/encore

Encore is a web based tool for obfuscating or scrambling text using a variety of methods. Useful for scavenger hunts, easter eggs, or just fun.

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Last synced: 18 Apr 2026

https://github.com/abdulrahmans0414/securepass-generator

SecurePass Generator is a modern, user-friendly password generator built with React. Create strong, randomized passwords with customizable options like length, numbers, and special characters.

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Last synced: 18 Apr 2026

https://github.com/ocdbytes/secp256k1_bitcoin

This is the cryptography algorithm used in bitcoin to generate public and private keys. Bitcoin uses SECP256k1 C-language library to use this encryption in the Bitcoin operating system.

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Last synced: 18 Apr 2026

https://github.com/thomasarmel/binary_polynomial_mod_algebra

Basic algebra on univariate binary polynomial (over GF(2))

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Last synced: 05 Apr 2026

https://github.com/hemantksingh/blockchain

A simple blockchain that doesn't use proof-of-work

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Last synced: 30 Mar 2025

https://github.com/dexcompiler/curves

Elliptic curve operations over finite fields

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Last synced: 04 Jun 2026

https://github.com/saiteja-talluri/cryptosuite-application

A small cryptosuite application written in C++

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Last synced: 19 Apr 2026

https://github.com/rcmilan/ex-cryptographyapp

Implementando Criptografia em Runtime

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Last synced: 19 Apr 2026

https://github.com/thearchitector/givemeaprivatekey-com

Hassle-free key pairs NOW

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Last synced: 04 Jun 2026

https://github.com/bradford-smith94/cs579

CS 579 Foundations of Cryptography

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Last synced: 29 Jun 2026

https://github.com/demining/an-attempt-to-predict-the-behavior-of-the-properties-of-the-secp256k1-elliptic-curve

An attempt to predict the behavior of the properties of the secp256k1 Elliptic Curve: Cryptography and cryptocurrency related parameters secp256k1 reveals several vulnerabilities and potential threats:

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Last synced: 20 Apr 2026

https://github.com/zsoulaimane/blockchain-road

Starting Road

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Last synced: 20 Apr 2026

https://github.com/randika00/aes-encryption-decryption

Encryption and Decryption using AES (Advanced Encryption Standards)

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Last synced: 20 Apr 2026

https://github.com/starlingvibes/rsa-factoring-challenge

We have sniffed an unsecured network and found numbers that are used to encrypt very important documents. It seems that those numbers are not always generated using large enough prime numbers. Your mission should you choose to accept it, is to factorize these numbers as fast as possible before the target fixes this bug on their server - so that we can decode the encrypted documents.

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Last synced: 21 Apr 2026

https://github.com/nuraj250/lockbox-secure-password-manager

LockBox is a lightweight yet powerful password manager built with Python. It encrypts and securely stores your passwords, providing an intuitive CLI and optional GUI for easy access. Say goodbye to forgotten passwords and hello to secure automation! 🔒🚀

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Last synced: 21 Apr 2026

https://github.com/separatrixxx/crypto_labs_6_sem

👓 Laboratory work for the 6th semester of MAI on cryptography

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Last synced: 21 Apr 2026

https://github.com/umstek/classiccryptolib

Classical Cryptography in Modern Code

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Last synced: 22 Apr 2026

https://github.com/zairbulos/password-generator

Password generator build with Python.

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Last synced: 05 Jul 2025

https://github.com/telkomdev/pycrypsi

Python custom crypto utility that wraps the pycryptodome module to make life easier (Digest, Cipher, HMAC, RSA, RSA Digital Signature)

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Last synced: 05 Jun 2026

https://github.com/telkomdev/c-crypsi

A Header only Custom crypto utility for C/C++ based on Openssl Crypto Library to make life easier

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Last synced: 05 Jun 2026

https://github.com/paulshpilsher/ethereum-cryptography

Ethereum Cryptography

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Last synced: 23 Apr 2026

https://github.com/quantumcoinproject/circl

Hybrid Post Quantum Cryptography Library in GO

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Last synced: 05 Jun 2026

https://github.com/ashu11-a/ashcrypt

Files protected with encryption

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Last synced: 24 Apr 2026

https://github.com/albertshih3/cse-130

Code for labs and homeworks for CSE 130 at UC Merced (Introduction to Cryptography).

cryptography ucmerced

Last synced: 27 Jun 2025

https://github.com/ollyky/dotcoin-auto-bot

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Last synced: 27 Mar 2025

https://github.com/colthreepv/symmetro

offline-first service for AES-256 text encryption and decryption

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Last synced: 26 Jun 2025

https://github.com/albinzayedrawan/symmetric-encryption-stream-and-block-cipher

Lab Exercises about stream and block cipher encryption methods.

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Last synced: 04 Apr 2025

https://github.com/dpetrosy/encryptor-decryptor

My small project encryptor / decryptor written in Python.

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Last synced: 04 Jul 2026

https://github.com/kshitiz-mhto/cryptix

Cryptix is a simple CLI utility that leverages hybrid cryptographic architecture bend of AES and RSA key-pair to securely encrypt and decrypt messages.

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Last synced: 06 Apr 2025

https://github.com/crosbydoo/laravel-kriptografi

Aplikasi sederhana berbasis web yang dapat upload file pdf dan dapat membaca dan meenkripsi isinya ke dalam bentuk file yang berbeda namun isinya sudah dienkripsi menggunakan AES. framework yang digunakan adalah laravel 10

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Last synced: 21 May 2026

https://github.com/geikha/cryptography-scripts

Basic cryptograhpy in Python, just for practice

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Last synced: 04 Oct 2025

https://github.com/princeranjan03/imageencryption_i-chip

This project focuses on creating a hardware-based encryption and decryption system that implements the Data Encryption Standard (DES) algorithm.

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Last synced: 26 Mar 2025

https://github.com/drylikov/secrets.clj

A library designed to generate cryptographically strong random numbers suitable for managing data such as passwords, account authentication, security tokens, and related secrets.

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Last synced: 21 May 2026

https://github.com/divinemonk/ancipher

Alpha Numeric Cipher, replaces similar words to numbers & gives a CyFi look.

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Last synced: 06 Apr 2026

https://github.com/missn0body/hide

A simple Blowfish scramble schtick made in C

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Last synced: 19 May 2026

https://github.com/ppad-tech/aead

Haskell AEAD-ChaCha20-Poly1305

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Last synced: 25 Aug 2025

https://github.com/0xliquidglass/caesar

A passwordless file encryption scripts for linux

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Last synced: 13 Mar 2025

https://github.com/alvarofdezr/cript

Cryptographic Ratcheting Implementation Protocol - Secure group messaging with forward secrecy

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Last synced: 06 Jul 2026

https://github.com/mdziegielewska/algorithms

A collection of algorithms and data structures implemented during university studies.

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Last synced: 13 Mar 2025

https://github.com/simplito/privmx-pki-server

Sample PKI (Public Key Infrastructure) server for PrivMX.

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Last synced: 13 Sep 2025

https://github.com/cloudnoize/kv-merkletree

Sparse Merkle Tree with arbitrary-length keys efficient range operations, height-reducing extensions, and verification, making it ideal for verifiable key-value storage

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Last synced: 31 Dec 2025

https://github.com/dragonscypher/galactic-guardians

A fun game to play with friends on the same network

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Last synced: 18 May 2026

https://github.com/nico-rodriguez/node-passgen

A Node random password generator.

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Last synced: 19 May 2026

https://github.com/guycole/military-cryptanalytics

Computer applications associated w/the classic "MILCRYP" course by Friedman and Callimahos

cryptography pandas python3

Last synced: 15 May 2026

https://github.com/demianparkhomenko/uni-rsa

RSA encryption and decryption of text files. 2 semester

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Last synced: 06 Apr 2025

https://github.com/jimouris/ring-signatures

A Rust implementation of ring signatures using Ristretto.

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Last synced: 15 May 2026

https://github.com/dssgabriel/present24-rs

Rust port of MITM attack on 2PRESENT24.

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Last synced: 08 Jul 2025

https://github.com/bytemare/hash

Easy generic API for cryptographic hash functions in Go.

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Last synced: 10 Apr 2025

https://github.com/piotrpsz/chacha-go

ChaCha20 algorithm implementation in Go based on RFC 8439

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Last synced: 17 May 2025

https://github.com/sucho6996/imagecryptosteganography

A simple project of hiding message inside an image after encrypting it built with python

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Last synced: 29 Mar 2025

https://github.com/artemyakovlev94/crpt2

c crpt crypto cryptography

Last synced: 19 May 2026

https://github.com/richard66nz/encryption-onetimepad

Demonstration python code using pyQT for One Time Pad encryption

cryptography one-time-pad pyqt5 python

Last synced: 06 Apr 2025

https://github.com/richard66nz/encryption-steganography

Demonstration python code using pyQT for steganography encryption

cryptography pyqt5 python steganography

Last synced: 06 Apr 2025

https://github.com/richard66nz/encryption-publickey

Demonstration python code using pyQT for public key encryption

cryptography public-key-encryption pyqt5 python

Last synced: 06 Apr 2025

https://github.com/richard66nz/pyqt-passwordgenerator

Simple Python code using pyQT to generate pseudo-random passwords

cryptography pyqt5 python

Last synced: 06 Apr 2025

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

This is a file cloaking utility set of APIs written in Julia. It is similar to Cloaking.py and Cloaking.c.

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Last synced: 04 Apr 2025

https://github.com/sheroz/crypto_vectors

Cryptography test vectors in Rust

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Last synced: 19 Apr 2026

https://github.com/ketanmehra003/silent-key

A command-line tool designed to provide multi-layered image security by combining advanced encryption (ChaCha20) and custom steganography techniques. This project enables secure image transmission and storage, making it ideal for use cases in defense, privacy protection, and digital content management.

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Last synced: 05 Apr 2025

https://github.com/bitbynik/quadratic_sieve

COL759 Assignment-2

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Last synced: 09 Apr 2025

https://github.com/sv592/secure_file_manager

A lightweight C++ application for secure file encryption, decryption, hashing, and digital signature management.

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Last synced: 10 Jun 2026

https://github.com/wesfly/frequency-analyzer

Text analyser

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Last synced: 04 Apr 2025

https://github.com/aadityapate/cryptography-information-security-lab_semester-v

Cryptography and Information Security Lab repository containing Codes/Solutions, and Assignments/Tasks completed during the coursework.

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Last synced: 19 May 2026

https://github.com/sergeantserk/sentrio

A cryptography library for securely encrypting and decrypting data using custom protocol.

c-sharp cryptography

Last synced: 02 Apr 2025

https://github.com/bromaniac/snuffle

Daniel J Bernstein's crypto system snuffle

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Last synced: 27 Mar 2025

https://github.com/arec1b0/blockchain

A basic blockchain implementation featuring a P2P network and a RESTful API, built with Go and optimized cryptographic functions using Rust.

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Last synced: 19 May 2026

https://github.com/RedInfinityPro/ScientificSharp

Rating: (5/10) The code is a Windows Forms application for a basic scientific calculator, allowing users to perform mathematical operations like addition, subtraction, multiplication, division, trigonometrics, and logarithms.

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Last synced: 30 Sep 2025

https://github.com/permutationlock/monocypher-zig

Zig bindings for the Monocypher cryptography library.

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Last synced: 16 Oct 2025

https://github.com/ydv-ankit/file-encryptor

A complete implementation of TEA (Tiny Encryption Algorithm) encryption and decryption for files.

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Last synced: 26 Jun 2025

https://github.com/ankit1598/crypto-algos

Repo for Cryptography Algorithms

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Last synced: 22 Aug 2025

https://github.com/moussaak/crypto

Vigenere Cipher, multitimepad

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Last synced: 04 Jul 2026

https://github.com/lukewait/midtown-app

Educational GUI tool developed as part of a TAFE QLD assignment, providing interactive access to three algorithmic solutions: Rock Paper Scissors, Multiplication Table, and Caesar Cipher. Ideal for IT training and understanding basic programming concepts within a structured application.

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Last synced: 18 Mar 2025

https://github.com/sudoaanish/loom

Local-first, serverless, peer-to-peer secure messaging client built on Tauri and Rust utilizing Double Ratchet encryption.

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Last synced: 04 Jul 2026

https://github.com/m1thrandir225/is-labs

Laboratory Exercises for the Information Security course

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Last synced: 16 May 2026

https://github.com/fialkaapp/fialka-mailbox

📬 Self-hosted store-and-forward relay for Fialka over Tor. AES-256-GCM, zero server-side decryption, no metadata, Raspberry Pi ready.

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Last synced: 08 Apr 2026

https://github.com/pymarcus/go_pemkeycertificate

Create a SSL certificate to test and local web development.

cryptography golang ssl-certificates

Last synced: 15 Sep 2025

https://github.com/naemazam/live-encryption-decryption

Encryption is the process of translating plain text data (plaintext) into something that appears to be random and meaningless (ciphertext). Decryption is the process of converting ciphertext back to plaintext. To encrypt more than a small amount of data, symmetric encryption is used

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Last synced: 10 Sep 2025

https://github.com/marialuizaleitao/crypto-demo

Projeto de demonstração de criptografia assimétrica (RSA) e simétrica (AES) em Node.js.

aes-encryption cryptography rsa-cryptography

Last synced: 08 Jul 2025

https://github.com/bivex/ejafa_protocol

Multi-language (Python, PHP, Go) implementation of the Ejafa communication protocol, providing secure and efficient data exchange using modern cryptographic primitives.

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Last synced: 23 May 2026

https://github.com/thefcraft/bhx-encryption-algorithm

Dynamic, block-based encryption algorithm (BHX / BlockHashXOR) with integrated HMAC integrity checks and support for both streaming and non‑streaming modes in Python.

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Last synced: 21 Mar 2025

https://github.com/25a0/sts-sphincs

SPHINCS, the hash-based signature scheme, with fast batch signatures

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Last synced: 22 Mar 2025

https://github.com/25a0/authentication-sets

Code and statistics related to authentication sets.

cryptography merkle-hash-trees

Last synced: 22 Mar 2025

https://github.com/hayr-hotoca/react-native-key-generator

256-bit encryption, cipher key generator - native implementation.

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Last synced: 08 Apr 2026

https://github.com/buzzcosm/udemy-course-blockchain-technology-in-java-1

Udemy course - Blockchain & Cryptocurrency in Java

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Last synced: 30 Oct 2025

https://github.com/MKSinghDev/crypto-exchange

The fastest and most secure crypto exchange platform.

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Last synced: 04 Oct 2025

https://github.com/ecsolticia/caeser-cipher-matlab

Caeser Cipher encryption and decryption scripts with a right shift of 2. Written in MATLAB. (WIP)

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Last synced: 18 Mar 2025

https://github.com/jmckesey/multithreaded-encryptor

Multithreaded File Encryptor is a high-performance C++ application that encrypts and decrypts all .txt files within a specified directory using a user-defined secret key. The project leverages multithreading to process files concurrently, significantly improving speed on multi-core systems.

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Last synced: 04 Oct 2025