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: 2026-06-30 00:07:03 UTC
JSON Representation

https://github.com/mikehorn-git/cryptography-c

Simple hash implementations in C/C++.

botan cryptography openssl

Last synced: 26 Jul 2025

https://github.com/sakshamsharma1821/slip39dotnet

bip32 bitcoin cryptocurrency cryptography csharp dotnet mnemonic secret-sharing shamir-secret-sharing slip-0039 vibe-coding

Last synced: 20 Jan 2026

https://github.com/matteopolak/password

A simple password generator.

cryptography cybersecurity generator password

Last synced: 12 May 2025

https://github.com/bethanyuo/crypto_hashes

Popular Cryptographic Algorithms using Crypto Libraries: Hashes

algorithms crypto-algorithms crypto-libraries cryptography hashing hashing-algorithm python

Last synced: 16 May 2026

https://github.com/pramsh/cipher

Cipher is a Node.js cryptographic library offering SHA-256 hashing, AES-256 encryption/decryption, JWT creation/validation, and RSA key pair generation.

cryptography digital-signature javascript jwt-auth jwt-token jwt-tokens nodejs rsa-key-pair rsa-signature sha256-crypt sha256-decryptor sha256-hash

Last synced: 16 May 2026

https://github.com/m3ssap0/ctf-rsa-breaker

This is a Python 2.7 script that can be used to solve RSA challenges in CTFs.

cryptography ctf ctf-tools rsa

Last synced: 23 Jun 2025

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

Basic cryptograhpy in Python, just for practice

console-application cryptography python python3 scripting

Last synced: 04 Oct 2025

https://github.com/zakirkun/rsa-go

Crypto RSA

cryptography rsa-cryptography

Last synced: 19 Sep 2025

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

A passwordless file encryption scripts for linux

cryptography encryption pgp

Last synced: 13 Mar 2025

https://github.com/ericlps/esteganografia-java

este projeto é uma aplicação em Java desenvolvida para realizar esteganografia digital em imagens no formato PNG, utilizando a técnica LSB (Least Significant Bit - Bit Menos Significativo). Ele permite ocultar dados (arquivos ou pastas compactadas em ZIP) dentro de uma imagem e, posteriormente, extrair esses dados da imagem modificada

cibersecurity command-line-interface cryptography data-hiding esteganografia image-processing java lsb maven png steganography

Last synced: 28 Apr 2026

https://github.com/rurumimic/siege

🏰 공성전

aes cryptography rsa rust security tls

Last synced: 27 Jul 2025

https://github.com/missn0body/hide

A simple Blowfish scramble schtick made in C

argument-parsing block-cipher c cipher-algorithms command-line command-line-tool cryptography terminal terminal-based

Last synced: 19 May 2026

https://github.com/abdulsamie10/rsaencryptiondecryption

This repository contains code of encryption and decryption of data using RSA. Developed in Java.

aes aes-128 aes-256 aes-encryption aes256 cryptography eclipse java java-8 rsa rsa-cryptography rsa-decryption rsa-encryption rsa-java

Last synced: 07 Nov 2025

https://github.com/buanzo/openpgp-requests

A wrapper to the Python Requests module that implements some OpenPGP cryptographic features such as encryption. It allows developers to add a cryptographic layer to HTTP requests, particularly useful for building more secure APIs. See README.md for server-side stuff.

api cryptography data-security information-security openpgp python-requests python36 rest-client

Last synced: 11 Apr 2025

https://github.com/doedja/nexus-voting

A decentralized anonymous voting application built on Nexus using zero-knowledge proofs.

cryptography nexus

Last synced: 22 Jun 2025

https://github.com/grandroyl9902m/privatebin

A minimalist, open source online pastebin where the server has zero knowledge of pasted data. Data is encrypted/decrypted in the browser using 256 bits AES.

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Last synced: 22 Jun 2025

https://github.com/charlieit/fernet-vault

A simple secrets manager using symmetric cryptography

cryptography fernet-encryption python3 secrets secrets-management vaults

Last synced: 22 Jun 2025

https://github.com/zemse/isik-crypto

crypto cryptography cryptology isi-kolkata rust-lang

Last synced: 03 Apr 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.

cryptography data-exchange go network-protocol php python security

Last synced: 23 May 2026

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/tkhoa2711/wieners-attack-rsa

An implementation of Wiener's attack on RSA public key

cryptography java security

Last synced: 28 Jul 2025

https://github.com/dchest/mldsa-wasm

ML-DSA-65 postquantum signatures in WebAssembly

cryptography ml-dsa ml-dsa-65 postquantum signatures webcrypto

Last synced: 19 Sep 2025

https://github.com/mdsn/cryptopals

The cryptopals crypto challenges

cryptography

Last synced: 22 Jun 2025

https://github.com/sohamkayal4103/oblivious_data_structures

Implementation of Oblivious Data Structures in C++

cryptography oblivious oblivious-data-structure ods path-oram

Last synced: 22 Jun 2025

https://github.com/i5ar/eccrypt

Encrypt your file with ease.

cryptography

Last synced: 28 Jul 2025

https://github.com/pauluswi/alpine

Is a microservice which provides credential (pin) service. Credential are stored at hashed format with salt.

cryptography fintech go golang jwt microservice payment rest-api salt

Last synced: 19 Sep 2025

https://github.com/lydia-ath/cryptography

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Last synced: 19 Aug 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.

cpp17 cryptography multithreading

Last synced: 04 Oct 2025

https://github.com/lucasfeliciano02/expressoes_regulares-regex

Expressões regulares muito úteis para validar: senhas, cpf, e-mails, IPv4, numeros e telefones

cryptography formatters python regex validations

Last synced: 10 Jun 2026

https://github.com/botti01/cryptography

This Repository is based on the "Cryptography" course @polito, it provides a foundational introduction to cryptography, focusing on state-of-the-art cryptographic algorithms essential for computer system security.

c capture-the-flag cryptography openssl python

Last synced: 15 Jun 2026

https://github.com/mikebrown0409/project-fuse

Zero-knowledge proof system for verifiable compliance envelopes. Proves compliance checkers executed correctly without revealing sensitive data. Built with RISC Zero zkVM. Phase 1 complete.

audit compliance cryptography gdpr privacy-preserving regulatory-compliance risc-zero rust soc2 zero-knowledge-proofs zkp zkvm

Last synced: 11 Jan 2026

https://github.com/melardev/cpp_md5_implementation

cpp crypto cryptography md5

Last synced: 21 Jun 2025

https://github.com/stevemats/morse_code_translator

Easily decode/encode Morse code and listen to audio.

cryptography encryption-decryption morse-code

Last synced: 09 Jun 2026

https://github.com/stevemats/wheatstone-playfair-cipher

C code to encrypt a string using the Playfair cipher.

cipher cryptography

Last synced: 30 Aug 2025

https://github.com/tomeffect0613/rsacrack

Obtain the passphrase of a private key (id_rsa), this tool uses the ssh-keygen binary to perform a brute force attack until a successful collision occurs.

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Last synced: 11 Apr 2025

https://github.com/znx-x/hadron

This ongoing MVP for a distributed ledger system aims to solve issues that first and second-generation blockchains have not been able to overcome by implementing novel concepts in mining, smart contracts, and cryptography.

blockchain cryptography encryption network post-quantum smart-contracts web3

Last synced: 11 Jul 2025

https://github.com/mduo13/sha512half

cryptography python3 sha512 sha512half

Last synced: 08 Oct 2025

https://github.com/floodnut/hexa-encryption

256비트 대칭키 암호 알고리즘 Hexa-Encryption

cryptography

Last synced: 21 Jun 2025

https://github.com/cryptography-research-lab/go-cycle-string

循环字符串数据结构（CycleString）

cryptography data-structures utils-library

Last synced: 12 Jan 2026

https://github.com/jtdowney/speck

Toy implementation of Speck cipher in Rust

cipher cryptography speck

Last synced: 27 Mar 2025

https://github.com/arec1b0/nim-blockchain-node

A high-performance, scalable blockchain node implementation in Nim, designed with advanced cryptography, modular consensus (PoS/BFT), zero-knowledge proofs, and optimized P2P networking.

blockchain byzantine-fault-tolerance cryptography decentralization high-performance nim nim-lang nimble nimlang p2p

Last synced: 21 Jun 2025

https://github.com/riyamishra28/cryptotools

Created an Application for Information System Security (ISS) Lab, where we implemented the following algorithms: 1. Diffie Hellman-MIMT Attack 2. Miller-Rabin Primality Test 3. DES-Differential Cryptanalysis

android-application cryptography

Last synced: 15 May 2026

https://github.com/levigo/url-crypto-kit

URL cryptography functionality to be used in conjunction with the Spring(tm) Framework

cryptography spring spring-security spring-web urls

Last synced: 01 Mar 2026

https://github.com/rishvant/cipher-safe-tests

Secure exam platform using encryption and Shamir’s Secret Sharing to ensure integrity and fairness.

cryptography exam-system mongodb nodejs reactjs redis shamir-secret-sharing tailwindcss

Last synced: 21 Jun 2025

https://github.com/efedotof/vaultly

Vaultly — облачное хранилище с end‑to‑end шифрованием и нулевым разглашением. Flutter‑клиент + Spring Boot‑бэкенд. Доверяйте математике!!

aes-gcm cloud-storage cross-platform cryptography end-to-end-encryption file-encryption flutter privacy rsa-oaep security self-hosted shps spring-boot zero-knowledge

Last synced: 25 Apr 2026

https://github.com/yannvvv/tlsferret

TLSferret is a fast SSL/TLS scanner built in Rust, offering extensive protocol support and dual TLS engines for modern and legacy systems. It also includes STARTTLS support for multiple protocols, ensuring comprehensive security analysis. 🛠️🔒

certificate cipher cipher-suites command-line-tool cryptography post-quantum-cryptography rust starttls tls

Last synced: 21 Jun 2025

https://github.com/rafael-santiago/phi-test

phi-test demo

cryptography phi-test

Last synced: 29 Jul 2025

https://github.com/crodriguezvega/probabilisticpubkey

Probabilistic public-key crypto systems in Rust

blum-goldwasser crypto cryptography cryptography-library goldwasser-micali probabilistic-pubkey public-key-cryptography rust rust-lang

Last synced: 11 Jul 2025

https://github.com/zhongruoyu/md5

An implementation of the MD5 hash algorithm.

cryptography hash md5

Last synced: 12 Aug 2025

https://github.com/c4mbr0nn3/hybrid-ecc-encryption

Proof-of-concept implementation of hybrid encryption using Elliptic Curve Cryptography (ECC) with multi-user data access control. Demonstrates ECDH key exchange, AES symmetric encryption, and secure Data Encryption Key (DEK) management for enterprise data protection scenarios.

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Last synced: 17 May 2026

https://github.com/kevindasilvas/kcrypt

Kcrypt or Krypt is an encrypting and decrypting lib created using javascript and node js

cryptography javascript node node-js nodejs

Last synced: 16 May 2026

https://github.com/dangnh0611/cryptography1_coursera

Coursera: Cryptography I assigments

cryptography python

Last synced: 11 Jun 2026

https://github.com/hypersign-protocol/snarkjs-bellman

A demo implementation of groth16 using SnarkJs for prover and bellman for verification

cryptography iden3 zeroknowledge zkp

Last synced: 23 May 2026

https://github.com/rsc-dev/crypto-tools

Crypto tools

cryptography python3

Last synced: 12 Aug 2025

https://github.com/mlziade/keycrypt

A fun and challenging puzzle website. You can create puzzles for friends and other players to solve! Only then can they decrypt your message...

cryptography django game puzzle puzzle-game

Last synced: 15 May 2026

https://github.com/0x4m4/bloodcodectf

Blood Code CTF challenge repository! This repository contains all the challenges and their source files from the Capture The Flag event codenamed "Blood Code," organized by 0x4m4. It includes challenges in cryptography, steganography, digital forensics, pwn, pyjail, reverse engineering, and web exploitation, designed for all skill levels.

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Last synced: 19 Jun 2025

https://github.com/Crittora/qripton-sdk-js

A secure SDK for data encryption, decryption, and digital signatures using AWS Cognito authentication. Provides enterprise-grade cryptographic operations with simple API integration.

api-client authentication aws-cognito cryptography data-encryption decryption digital-signature encryption enterprise-security node-js npm-package sdk security typescript

Last synced: 04 Apr 2025

https://github.com/foncki/aes-visualization

An interactive Next.js 13 + TypeScript application that demonstrates AES-128 encryption step by step. Enter plaintext and a 128-bit key (or generate one randomly) to watch each round’s transformations—SubBytes, ShiftRows, MixColumns, and AddRoundKey—unfold in a 4×4 state matrix. Perfect for learning or teaching the internals of AES.

aes aes-encryption cryptography nextjs

Last synced: 29 Jul 2025

https://github.com/ilhamghaza/lockflare

cryptography flutter flutter-app gunadarma

Last synced: 01 Jan 2026

https://github.com/cybergaz/cryptography

Interactive CLI for exploring cryptographic algorithms, implemented in rust

cli cryptography rust

Last synced: 14 Mar 2025

https://github.com/cuhsat/spritz.go

A Spritz cipher implementation in pure Go.

algorithm cryptography go golang spritz

Last synced: 29 Mar 2025

https://github.com/josecarlosnf/te-seginfo

Códigos da disciplina de Tópicos Especiais II - Segurança da Informação. ✨ Fundamentos de criptografia

cryptography python security

Last synced: 19 Jun 2025

https://github.com/cuhsat/pssst-chat

A simple ncurses based chat for Pssst.

chat cryptography gui messaging ncurses pssst python

Last synced: 29 Mar 2025

https://github.com/ryan-rozario/auctf_2020

Solutions for a few of the AUCTF 2020 Crypto Problems. Did not have much time to solve as much as i wanted to.

auctf auctf2020 crypto cryptography ctf

Last synced: 03 Apr 2025

https://github.com/tirthraj1605/website-security-grader

Website Security Grader is a Python-based tool to analyze the security of any website by checking SSL, TLS, headers, and other security practices. It assigns a security grade (A+ to D) based on industry-standard best practices.

cryptography httpclient python3 requests socket ssl

Last synced: 18 Mar 2025

https://github.com/cuhsat/spritz.java

A Spritz cipher implementation in pure Java.

algorithm cryptography java spritz

Last synced: 27 Aug 2025

https://github.com/absoluteseeker/slhasher

a program to use several cryptographic hash functions easily in the terminal

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Last synced: 18 May 2026

https://github.com/joestr/enka

Enkapsulate your data!

aes cryptography decryption encryption rsa

Last synced: 08 Jul 2025

https://github.com/rakin406/cryptography

Learning cryptography

cryptography

Last synced: 13 Sep 2025

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

Finite Field Polynomial Implementation in Rust

cryptography math zk

Last synced: 14 Aug 2025

https://github.com/bgmp/cryptography-lab3

Third Lab's project for my cryptography class.

cryptography man-in-the-middle socket

Last synced: 03 Mar 2025

https://github.com/uofsc-fall-2022-math-587-001/homework1

Substitution ciphers

cryptography go latex math

Last synced: 16 May 2026

https://github.com/daisvke/ciphers

A set of ciphers.

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Last synced: 14 Aug 2025

https://github.com/vl1507/cryptography_course

Криптография ДВФУ

cryptography dvfu fefu python

Last synced: 21 Jul 2025

https://github.com/anupammaurya6767/tanji

Tanji is a Python encryption library that provides a secure and flexible solution for encrypting and decrypting messages. It leverages both symmetric and asymmetric encryption techniques to ensure the confidentiality and integrity of your data.

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Last synced: 21 Mar 2025

https://github.com/jameskabbes/cryptography

Package for easy implementation of professional encryption algorithms

cryptography pypi-package python

Last synced: 08 Apr 2026

https://github.com/mrmorais/cipher_algorithms

Cipher algorithms implementations in C++

cipher cryptography

Last synced: 21 Jul 2025

https://github.com/affinidi/affinidi-zkp-crypto-rs

A Rust library provides circom ecosystem compatible BabyJubJub EdDSA sign/verify primitives and Poseidon hashing with exports, for mobile integrations

affinidi cryptography trust zkp

Last synced: 16 May 2026

https://github.com/d-thatcher/hybridcryptosystem

A library of functions built around PyCrypto that implements a asymmetric encryption of public keys with symmetric encryption of files

cryptography hybridencryption python

Last synced: 30 Apr 2026

https://github.com/lucianoscarpaci/cryptography

Embark on a journey of cryptographic exploration as we delve into the intricate worlds of RSA and ElGamal encryption, crafted entirely from scratch without the aid of OpenSSL. Delve into the inner workings of these fundamental encryption algorithms, unraveling the complexities of secure data transmission.

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Last synced: 14 Aug 2025

https://github.com/dhruv-varshney-developer/etherlite

A fully custom-built Ethereum wallet. Features wallet creation/import, raw transaction handling, BIP-39 mnemonic generation, secure storage, and seamless network switching. Built with React, Material UI, Ethereumjs-util, and Alchemy-powered nodes, supporting multiple Ethereum and Polygon networks.

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Last synced: 09 Apr 2026

https://github.com/philbobaggins/cryptxor

A joke encryption utility

cryptography encryption joke rust rust-lang xor xor-cipher xor-cryptography xor-encryption

Last synced: 21 Jul 2025

https://github.com/bshankar/pyrite

A minimal (insecure, incomplete) implementation of a bitcoin like cryptocurrency

cryptocurrency cryptography javascript nodejs

Last synced: 02 May 2026

https://github.com/vu3rdd/go-merkletree

a merkle tree implementation in Go with a fixed hashing scheme

cryptography go golang merkle-proof merkle-tree merkletree

Last synced: 25 May 2026

https://github.com/fpoirotte/cryptal-openssl

An implementation of the Cryptography Abstraction Layer based on the OpenSSL PHP extension

cryptal crypto cryptography openssl php

Last synced: 03 Apr 2025

https://github.com/nglaeser/cryptotex

Flexible LaTeX template for cryptography research & conferences (WIP)

cryptography utils wip

Last synced: 08 Apr 2026

https://github.com/nglaeser/gtm-ss

Girls Talk Math - Secret Sharing packet & spring activity

cryptography

Last synced: 08 Apr 2026

https://github.com/cadeke/lets-go

lets-go is a simple CLI application written in Go for encrypting and decrypting files.

cli cryptography decryption encryption golang

Last synced: 05 Jun 2026

https://github.com/fpoirotte/cryptal-mcrypt

An implementation of the Cryptography Abstraction Layer based on the legacy mcrypt PHP extension

cryptal crypto cryptography mcrypt php

Last synced: 03 Apr 2025

https://github.com/yo525/sme

SME256 Encryption Library is a Python package that implements the 256 Scrambled-Matrix-Encryption (SME256) algorithm

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Last synced: 10 Sep 2025

https://github.com/projects-developer/cryptography-communication-system-project

This project aims to design and develop a secure communication system using cryptographic techniques, ensuring confidentiality, integrity, and authenticity of transmitted data. Cryptography Communication Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

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