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: 2026-07-03 00:07:02 UTC
JSON Representation

https://github.com/danielost/sp-box

S-box/p-box implementation

block-ciphers cryptography p-box s-box

Last synced: 12 Jul 2025

https://github.com/rushikeshghuge-19/blockchain_django

A secure Blockchain-Based Voting System built with Django. It records votes on a custom blockchain for transparency and integrity, featuring user authentication, candidate management, and real-time vote tallying. The backend uses Django, with SQLite for data storage.

blockchain cryptography django proof-of-work python sha-256 sqlite voting-system webdevelopment

Last synced: 10 May 2026

https://github.com/berkekaragoz/caesars-cipher

A library that provides a simple interface to the ceasers cipher for browser and node.js.

caesar-cipher cryptography mocha typescript typescript-library

Last synced: 10 May 2026

https://github.com/f2rkan/digital-content-platform

An example of a digital content platform that I created to reinforce the structures I learned in the object-oriented programming applications course at university. I do CRUD operations and use MD5 encryption algorithm during login process; I also preferred MySQL as database.

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Last synced: 10 May 2026

https://github.com/omarbazaraa/security_des_mac

Implementation of DES and MAC algorithms.

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Last synced: 10 May 2026

https://github.com/opifexm/cryptoanalyzer

Data encryption decryption program

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Last synced: 10 May 2026

https://github.com/3qnrpdwd/longinuspypi

It is a library created to study sessions, tokens, etc. under the https communication protocol. It is incomplete and insecure.

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Last synced: 11 May 2026

https://github.com/rub-nds/ssh-client-signatures-artifacts

Artifacts for the paper "On the Security of SSH Client Signatures", accepted at the ACM Conference on Computer and Communications Security (CCS) 2025.

cryptography cve-2024-31497 github gitlab launchpad measurement public-keys ssh ssh-client

Last synced: 11 May 2026

https://github.com/suwadith/cryptography-python

A simple Python-based one-time pad encryption implementation.

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Last synced: 11 May 2026

https://github.com/vobst/ctf-hireme

Solution for NERD's HireMe.c challenge.

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Last synced: 30 Jun 2025

https://github.com/projects-developer/steganography-projects

This project aims to design and develop a steganography system that enables secure and covert communication. Steganography Project Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

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Last synced: 04 Jan 2026

https://github.com/t-bast/echalotte

Research on various onion encryption schemes.

cryptography onion onion-routing

Last synced: 12 May 2026

https://github.com/uofsc-fall-2022-math-587-001/homework5

Diffie-Hellman key exchange and ElGamal cryptosystem. Plus Shanks' algorithm for solving the discrete logarithm problem.

cryptography discrete-logarithm go latex math

Last synced: 12 May 2026

https://github.com/thesupercd/rainbow_table_builder

A high performance CUDA-based GPU accelerated Rainbow-Table maker, written in C++ without any external libraries or dependencies needed.

cpp cryptography cuda hash-table hashing parallel-processing rainbow-table sha3 sha3-512 uuid

Last synced: 12 May 2026

https://github.com/domamaric/srs

Python solutions for laboratory exercises for Computer Security course at FER.

cryptography cryptography-algorithms password-manager passwords

Last synced: 11 Jun 2026

https://github.com/sutterseba/sutterseba

bitcoin cryptography

Last synced: 11 Jun 2026

https://gitlab.com/florent.legname/java-crypto-sandbox

Tests and POCs with standard JDK 18 cryptographic implementations: RSA ciphering and signing, AES encryption etc.

AES cryptography java openjdk rsa

Last synced: 10 Jan 2026

https://github.com/uofsc-fall-2022-math-587-001/homework4

Introduction to the discrete logarithm problem and a comparison of symmetric vs asymmetric ciphers

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Last synced: 20 Apr 2026

https://github.com/super-e/slip39dotnet

Complete .NET implementation of SLIP-0039 Shamir's Secret Sharing with BIP32 support

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Last synced: 13 Apr 2026

https://github.com/mukailasam/rand

A Command-Line tool for generating a cryptographically secure random bytes

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Last synced: 27 Feb 2025

https://github.com/gabriel-milan/des_example

Example for encryption/decryption using DES. Compatible with Arduino, Node.js and Python

arduino cipher cryptography nodejs python3

Last synced: 13 Apr 2026

https://github.com/future-rafay/data-encryption-app-python_streamlit

🔐 SecureVault is a Python-based project designed to provide robust encryption and decryption functionalities.

cryptography fernet-encryption hashing-passwords python

Last synced: 18 Jun 2025

https://github.com/massivefermion/erl_argon2

nifs for hashing and verifying passwords using argon2

argon2 argon2i argon2id crypto cryptography elixir erlang hash hashing nif password password-hash password-hashing rust

Last synced: 13 Apr 2026

https://github.com/devssh/scaco

Final Year Project 2016 http://www.indjst.org/index.php/indjst/article/view/102112

abelian-groups algorithm carmichael chinese-remainder cloud cryptography discrete-logarithm euler-totient fermat galois-field network-security rsa signature-verification

Last synced: 20 Jul 2025

https://github.com/typicalhog/randevu-ts

Universal Probabilistic Daily Reminder Coordination System for Anything

algorithms blake3 coordination cryptography daily datetime deterministic foss hash offline probability randevu random rdv rdvt reminders rendezvous ts typescript universal

Last synced: 19 Feb 2026

https://github.com/makarov-danil-school-projects-ctu/cryptography-sha-512

algorithms cpp cryptography hash-functions openssl

Last synced: 17 Mar 2025

https://github.com/cedi/cryptopals

http://cryptopals.com

challenge cryptography cryptopals

Last synced: 09 Apr 2025

https://github.com/wzyskq/polybius_square_pro

An improved encryption and decryption system from the Polybius Square.

cryptography

Last synced: 14 Jan 2026

https://github.com/rbourgeat/miniblockchain

🔗 A simple Blockchain

blockchain c-plus-plus cryptography

Last synced: 08 Apr 2025

https://github.com/eginez/secret-key-split

Secret key split algorithm

cryptography golang key-management shamir-secret-sharing

Last synced: 21 Jun 2025

https://github.com/louisdeck/coinmachine

A wargame in C

binary-exploitation c cryptography ctf wargame

Last synced: 11 Mar 2025

https://github.com/kevincharm/gfc-fpe

Generalised Feistel cipher for stateless shuffling

cryptography feistel fpe shuffle

Last synced: 07 Sep 2025

https://github.com/bmoneill/adfgvx

ADFGVX cipher encrypter/decrypter

adfgvx cipher cryptography html-css-javascript html5 webpage

Last synced: 06 Sep 2025

https://github.com/arnaldo10cisne/cryptography__python_app

This program can encrypt and decrypt arrays of English words. The word API used to validate words and obtain random ones is: https://random-word-api.herokuapp.com

cryptography pyhon3 pyhton

Last synced: 26 Mar 2025

https://github.com/cepdnaclk/e16-4yp-implementation-of-lightweight-cryptographic-algorithms

This project aims to implement and analyse NIST Lightweight cryptography competition finalist algorithms. Lightweight cryptographic algorithms are designed to be run on resource-constrained IoT devices.

computer-security cryptography iot

Last synced: 14 May 2026

https://github.com/eiblybrasil/php-crypt

A simple php class for encryption.

class cryptography php php72 php73 php74 php80 php81

Last synced: 05 Feb 2026

https://github.com/thesreale/crypto-factory-cf-eth-checker-drainer-balance-mnemonic

Ethereum wallets use cryptography and BIP39 standards to generate secure keypairs, mnemonics, and seed phrases. Hardware and cold wallets ensure safe storage, while balance checkers track funds on the blockchain.

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Last synced: 09 Apr 2025

https://github.com/mrxx0/ft_ssl_md5

An introduction to cryptographic hashing algorithms.

cryptography security ssl

Last synced: 03 Aug 2025

https://github.com/twilight-dream-of-magic/fastfireblockcipher-mysticalascon

FastFire: An Enhanced Version of ASCON Algorithm with Custom Round Constants and Substitution-box with custom nonlinear functions, Linear Permutation

ascon block-cipher cryptography fastfire sponge-functions

Last synced: 01 Mar 2025

https://github.com/aniketc068/atick-python

Standalone Python library for PDF digital signatures — PAdES/CMS, USB tokens, Windows store, Indian eSign, timestamps, LTV and a green-tick appearance Adobe shows as valid. Zero dependencies.

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Last synced: 16 Jun 2026

https://github.com/bmwant/ecc

Elliptic Curve Cryptography algorithms

calculus cryptanalysis cryptography

Last synced: 17 Mar 2025

https://github.com/dhcgn/crypto

Wrapper of secure encryption implementation to simplify the usage.

cryptography encryption go golang

Last synced: 17 Mar 2025

https://github.com/mpankajarun/file-encryption-and-decryption

This app is an experiment that will allow people to choose files from their computers and encrypt them client-side with a pass phrase.

cryptography cryptojs javascript

Last synced: 04 May 2026

https://github.com/albertotirla/cryptolibrary

this implements a collection of standard, classical encryption algorythms such as the caesar cifer, rot13 and monoalphabetical substitution

cryptography

Last synced: 03 Apr 2025

https://github.com/chewzzz1014/sem-4-projects-code

arduino course-project coursework cryptography mvc prolog

Last synced: 13 Apr 2026

https://github.com/mananpatel06/information-security-practicals

This is Cryptography And Security Practical.

caesar-cipher-algorithm ce348 crns cryptography cspit depstar diffie-hellman-algorithm digital-signature-algorithm hill-climbing-algorithm information-security onetimepad playfair-cipher practicals railfence-cipher rsa-algorithm security

Last synced: 13 Jun 2026

https://github.com/isaac-defrain/cryptography

Crypto BIP (Book In Progress)

crypto cryptography python

Last synced: 29 Jun 2025

https://github.com/farhantips/cryptography-and-cryptanalysis

This repository covers practical implementations of Cryptography and Cryptanalysis, including encryption algorithms, hashing, digital signatures, and techniques for analyzing and breaking cryptographic systems.

aes-encryption authentication-protocol blockcipher ceaser-cipher cryptanalysis cryptography des diffie-hellman elliptic-curve-cryptography encryption-decryption hashing-passwords kerberos-authentication knapsack publickey-cryptosystem rsa-cryptography ssh ssl zero-knowledge-proof

Last synced: 26 Mar 2025

https://github.com/lcian/klein-cryptanalysis

🔓 Cryptanalytic attack on the KLEIN embedded block cipher

cryptanalysis cryptography

Last synced: 08 Jun 2026

https://github.com/erhant/fftype

Finite-field arithmetic within the type system.

cryptography elliptic-curves finite-fields polynomials types typescript

Last synced: 05 Oct 2025

https://github.com/markovianprotocol/markovian-protocol

Provenance layer for autonomous agents. COMMIT writes timestamped, ZK-verified, independently verifiable records that plug into W3C VC, A2A, MCP, and ERC-8004.

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Last synced: 29 Jun 2026

https://github.com/keyweeusr/blake

BLAKE implementation as per RFC7693

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Last synced: 05 Oct 2025

https://github.com/nathancordeiro/magic-box-cipher

The Magic-Box Cipher is my own inspiration drawn from the classical Caesar Cipher, the Playfair Cipher and the monoalphabetic substitution cipher. Do give it a try.

cipher cipher-algorithm cryptography

Last synced: 31 Mar 2025

https://github.com/primetdmomega/bay-cracker

A set of tools for encryption, decryption of messages and to create new cyphers !

cryptography decryption encryption

Last synced: 25 Mar 2025

https://github.com/rudrowo/aes-cpp

cryptography

Last synced: 06 Oct 2025

https://github.com/rudrowo/rsa-cpp

cryptography

Last synced: 06 Oct 2025

https://github.com/dogukansahil/advancedbrutecipher

Advanced Brute Cipher is a simple and secure encryption tool that performs all operations locally in your browser using HTML, JavaScript, and CSS. Manage your encryption keys without relying on external CDNs.

cryptography css decryption encryption html javascript key-management local-storage python security web-application

Last synced: 13 Feb 2026

https://github.com/jcbritobr/gocrypto-study

This study is based on Golang Cryptography for Depeloper book and its examples.

cryptography golang study

Last synced: 06 Oct 2025

https://github.com/maxime-cllt/primeshield

GUI RSA implémentation en Rust

cicd cryptography gui rsa-cryptography rust

Last synced: 25 Mar 2025

https://github.com/simplito/privmx-bridge-docker

Docker Compose for PrivMX Bridge.

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Last synced: 06 Oct 2025

https://github.com/danielost/ecpoint-wrappers

Convenient wrappers for operations on elliptic curves in Golang.

cryptography ecc elliptic-curves

Last synced: 06 Oct 2025

https://github.com/craiggleso/enigma

Javascript implementation

cryptography enigma

Last synced: 06 Oct 2025

https://github.com/yawning/musig2-voi

Go MuSig2 (w/secp256k1) (Mirror)

cryptography cryptography-algorithms go golang musig2 schnorr-signatures secp256k1

Last synced: 11 Mar 2025

https://github.com/karpeleslab/purecrypto

A pure-Rust, no_std cryptography toolkit: constant-time primitives, classical & post-quantum public-key, X.509, and the TLS/DTLS/QUIC stack — no foreign code, no C dependencies.

constant-time crypto cryptography no-std post-quantum-cryptography pure-rust rust tls x509

Last synced: 04 Jun 2026

https://github.com/oelshocht/javacryptotoys

Java bytecode strings encryption and file signing

bytecode cryptography java security-tools

Last synced: 20 Jun 2026

https://github.com/vobst/ctf-nsa_backdoor

Solution of picoCTF 2022 NSA backdoor challenge.

backdoor cryptography ctf-writeups nsa picoctf

Last synced: 07 Oct 2025

https://github.com/abuzaidk1234/hybridtextfileencryptor

A lightweight and secure Python-based hybrid encryption tool using AES for content encryption and RSA for key protection — ideal for safely storing and transmitting sensitive text files.

aes cryptography cybersecurity encryption encryption-decryption python rsa text-encryption

Last synced: 09 Apr 2025

https://github.com/smallstepman/fluency-interview-task

interview tasks

cryptography interview-exercise portfolio rust webserver

Last synced: 25 Mar 2025

https://github.com/tsovak/a-cryptographic-hash-function

A Cryptographic Hash Function

cpp cryptography hash-functions

Last synced: 02 Apr 2025

https://github.com/ppad-tech/sha512

Pure Haskell SHA-512, HMAC-SHA512

cryptography hashing haskell sha2 sha512

Last synced: 23 Jun 2025

https://github.com/xkrejc70/mit-bis-project

BIS - Information System Security - Project: security mechanisms and applied cryptography

cryptography hacking penetration-testing vut-fit

Last synced: 03 Jan 2026

https://github.com/mberry/bcrypter

Bcrypt in Rust.

bcrypt cryptography hashing passwords

Last synced: 08 Oct 2025

https://github.com/bi-zone/ctfzone-2020-finals-littleknowledge

CTFZone 2020 Finals Crypto task LittleKnowledge

c cryptography ctf ctf-challenges docker libfuzzer python3

Last synced: 08 May 2026

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

The Caesar's Cipher Encoder and Decoder

caesar-cipher cryptography ruby

Last synced: 01 Mar 2025

https://github.com/ya2ir/sha1

SHA-1 in Golang

cryptography hashing-algorithm hashing-algorithms sha-1 sha-1-hash

Last synced: 08 Oct 2025

https://github.com/keyweeusr/elchacha

ChaCha20 implementation as per RFC7539

chacha20 cryptography cryptography-algorithms elisp emacs rfc7539

Last synced: 08 Oct 2025

https://github.com/PRoplayer282828/CryptoTrader

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Last synced: 11 Mar 2025

https://github.com/make-github-pseudonymous-again/id

:performing_arts: Aurélien's public keys

cryptography public-key security

Last synced: 11 Mar 2026

https://github.com/incertia/crypto-primer

intro to crypto given to my coworkers at AIS

algebra algebraic-structures cryptography dh diffie-hellman ecc ecdh rsa

Last synced: 18 Jan 2026

https://github.com/kzorin52/nistp256

Rust dylib wrapper to RustCrypto/elliptic-curves [only keypair]

crypto cryptography elliptic-curves keypairs nistp256 perfomance secp256r1

Last synced: 08 Oct 2025

https://github.com/amdevit/hoddmir

Hoddmir is a library that implements cryptographic helpers using managed .NET APIs and well-known cryptographic libraries to provide classes with useful tools for third-party applications, such as easy-to-use secure storage or in-memory password vaults.

aead cryptography dotnet secure-storage security store

Last synced: 12 Apr 2026

https://github.com/scarlet-oni/ransomware

A simple ransomware program that encrypts just one file

cryptography cyber-security cybersecurity openssl python python3 ransomware

Last synced: 15 Jun 2025

https://github.com/rancoud/crypt

Crypt Package

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Last synced: 09 Apr 2025

https://github.com/natharyan/secret-sharing-arithmetic-operations

Shamir's secret sharing to generate shares for arithmetic operations over two secrets.

cryptography cryptography-project secret-sharing shamir-secret-sharing

Last synced: 09 Oct 2025

https://github.com/dbalan/cryptopals

Cryptopals solutions

cryptography go golang

Last synced: 13 Mar 2026

https://github.com/corocoto/asymmetric-cryptography-encrypt-decript-message

Encrypt/decrypt message via using public & private key pair

asymmetric-cryptography cryptography decrypt encrypt rsa-algorithm

Last synced: 09 Oct 2025

https://github.com/paulshpilsher/ed25519-key-generator

Public key generator using Edwards-curve Digital Signature Algorithm (EdDSA)

crypto cryptography eddsa eddsa25519 go golang public-key-cryptography

Last synced: 30 May 2026

https://github.com/guilt/gsum

gsum is a versatile command-line hashing tool written in Go, supporting a wide range of cryptographic and non-cryptographic hash algorithms. It offers advanced features like incremental hashing, GPG signing/verification, progress bars, and compatibility with existing Unix and Windows environments.

chatgpt checksum cryptography defense-methods golang grok gsum hashing incremental range utility verification

Last synced: 09 Oct 2025

https://github.com/prasunchakra/EncipherX

A simple Django-based Caesar Cipher application demonstrating basic text encryption and decryption. Currently for learning fundamental cryptographic concepts, experimenting with shift-based ciphers, and later on building upon for more advanced encryption methods.

cipher cryptography django python

Last synced: 16 Sep 2025

https://github.com/stafmazayded83/cryptoguardian

Cryptoguardian is a secure wallet application designed to protect your digital assets. It uses advanced encryption methods to ensure that your cryptocurrencies remain safe from unauthorized access.

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