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
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https://github.com/synpareia/trust-mcp

Identity and trust tools for AI agents — MCP server

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Last synced: 06 May 2026

https://github.com/shazeus/passforge

Secure password and secret generator — passwords, passphrases, PINs, tokens, and strength analysis

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Last synced: 09 Jun 2026

https://github.com/pulijon/s3tools

Tools to manage S3 buckets and objects

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Last synced: 06 May 2026

https://github.com/nickylogan/kryptograf

A POC of encryption algorithms

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Last synced: 07 May 2026

https://github.com/tchello45/nimbus-encryption

An e2ee toolkit for the web in early stage development

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Last synced: 08 May 2026

https://github.com/hemanthh17/da-1-crytograghy-vit

Digital Assignment for Crytography and Network Security Assignment

cryptography flask python3 vignere-cipher

Last synced: 08 May 2026

https://github.com/fsanaulla/splabs

c cryptography

Last synced: 10 Jun 2026

https://github.com/diegoperea20/python-cryptography

Use of the python cryptography library to encrypt and decrypt messages symmetrically and asymmetrically, as well as giving digital assignments

asymetric cryptography encryption message python symetric uao

Last synced: 09 May 2026

https://github.com/lepresk/pki-infrastructure

Three-tier PKI in Node.js — Root CA, Intermediate CA, signing certificates, chain verification, and document signing

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Last synced: 16 Jun 2026

https://github.com/mrdcvlsc/filecryptographyapp

Android app for file encryption and decryption

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Last synced: 09 May 2026

https://github.com/cr0mb/satoshi-sweeper

Satoshi Sweeper is a Bitcoin wallet generator and balance checker. It generates mnemonic phrases, derives Bitcoin addresses (Legacy, Nested SegWit, and Native SegWit), and checks their balances using the Blockstream API.

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Last synced: 09 May 2026

https://github.com/munizmat/cryptography-basics

cryptography java nodejs

Last synced: 09 May 2026

https://github.com/maksmez/ids_update_vkr

Проект разработанный для автоматического обновления баз правил системы VipNet IDS.

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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/everyways/test-app-uniris

Uniris Angluar 11 init

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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/mtumilowicz/cryptography-rsa-workshop

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Last synced: 10 Jun 2026

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

Research on various onion encryption schemes.

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Last synced: 12 May 2026

https://github.com/viveksyngh/merkletree

Merkle hash tree implementation in golang

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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.

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Last synced: 12 May 2026

https://github.com/domamaric/srs

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

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Last synced: 11 Jun 2026

https://github.com/sutterseba/sutterseba

bitcoin cryptography

Last synced: 11 Jun 2026

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/ahmatfauzy/pengaduan-app

cryptography dekstop-app dotenv-java generic gson i18n java jbcrypt mongodb serialization thread

Last synced: 14 May 2026

https://github.com/silent0wings/hybrid-caesar-cipher-encryption-system

EncryptionThe Hybrid Caesar Cipher Encryption System is a Java-based encryption tool that extends the classic Caesar cipher by incorporating multiple scrambling, shuffling, and shifting algorithms. This hybrid approach enhances the security of the encryption process.

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Last synced: 12 Jun 2026

https://github.com/4lessandrodev/saas-cryptography

a small project to test encryption as a service with nodejs

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Last synced: 13 Jun 2026

https://github.com/ar-io/ar-io-mlflow

MLflow plugin for verifiable ML provenance, anchored to ar.io

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Last synced: 13 Jun 2026

https://github.com/roydevashish/chacha20-hash-lightweight-cryptographic-hash-function-based-on-chacha20

A lightweight cryptographic hash function inspired by ChaCha20, designed for speed, simplicity, and efficiency in resource-constrained environments. Ideal for embedded systems, research, and educational purposes. Not intended for production use without further cryptanalysis.

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Last synced: 13 Jun 2026

https://github.com/validpay-io/validpay-react-native-sdk

Official React Native SDK for ValidPay CVCP — QR-based cryptographic document verification for mobile apps.

check-fraud cryptography document-verification mobile-sdk qr-verification react-native

Last synced: 15 Jun 2026

https://github.com/rokatyy/skitala

skitala encoder/decoder (in progress)

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Last synced: 15 Jun 2026

https://github.com/jose-compu/vdf-rs

An implementation of Verifiable Delay Functions in Rust

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Last synced: 16 Jun 2026

https://github.com/boompig/secret-santa

cryptography gmail-api python3 tox

Last synced: 17 Jun 2026

https://github.com/natthasath/demo-python-cryptography

Cryptography is the practice of securing communication through mathematical techniques, such as encryption, decryption, and key exchange.

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Last synced: 18 Jun 2026

https://github.com/mtumilowicz/elliptic-curve-workshop

Basics of elliptic curves, EC over finite fields and ECDSA.

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Last synced: 19 Jun 2026

https://github.com/mechiuw/java_cryptography-algorithm

This is a basic algorithm for encryptions and decryptions using handmade algorithm logic using java.

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Last synced: 19 Jun 2026

https://github.com/lesnyrumcajs/matasanocpp

Matasano Crypto Challenge using C++

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Last synced: 19 Jun 2026

https://github.com/berkbavas/cryptostuff

Cryptographic algorithms and attacks in Java 8

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Last synced: 21 Jun 2026

https://github.com/edycutjong/visor

🥽 Privacy-Blind Egress Gateway inside TEEs

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Last synced: 21 Jun 2026

https://github.com/edycutjong/synod

🏛️ Atomic multi-agent transactional orchestration engine running inside Intel TDX TEE boundary with 100% cryptographic rollback guarantees, powered by Terminal 3 ADK.

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Last synced: 21 Jun 2026

https://github.com/edycutjong/epoch

⏳ Verifiable, privacy-blind inheritance and continuity orchestration inside hardware-isolated enclaves.

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Last synced: 21 Jun 2026

https://github.com/edycutjong/lethe

🌊 Autonomous right-to-erasure agent protecting PII via secure TEE enclaves and network egress blinding.

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Last synced: 21 Jun 2026

https://github.com/stevemats/hashgenerator

The how to generate hashes using hashlib module in python.

cryptography hashlib hashlib-library python

Last synced: 22 Jun 2026

https://github.com/mokkunsuzuki-code/stage354

Stage354: Signature Key Rotation Ledger Layer with Stage178 Assumption, Threat Model, and Guarantee Binding. Transparent key lifecycle tracking, signature key status recording, ledger chaining, and PQC migration-aware verification metadata.

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Last synced: 23 Jun 2026

https://github.com/mokkunsuzuki-code/stage355

Stage355: Signature Key Status Verification and Revocation Enforcement Layer with signing-time validity checks, Stage354 ledger binding, fail-closed revoked-key rejection, and PQC intent-only protection.

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Last synced: 23 Jun 2026

https://github.com/vallshmeleff/radiorandgentwo

A mock-up of a Java application that uses an Internet radio digital stream to encrypt SMS messages with Vernam's code. Works

cryptography

Last synced: 23 Jun 2026

https://github.com/rbourgeat/ft_ssl_md5

You will recode part of the OpenSSL program, specifically the MD5 Hashing Algorithm.

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Last synced: 23 Jun 2026

https://github.com/vedbhanushali/cryptoaes

Cybersecurity Project - Repositry contains [windows and android] application which uses Symmetric - Encryption for encrypting any file

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Last synced: 23 Jun 2026

https://github.com/seniorbatleo/cryptocart

Secure chat software for your computer.

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Last synced: 24 Jun 2026

https://github.com/suprim-corp/kit-backend-base-java

Reusable Java backend toolkit — UUID, JSON, crypto, exception, web & gRPC (dev.suprim)

backend cryptography exception-handling grpc java java-library json maven spring-boot utilities

Last synced: 24 Jun 2026

https://github.com/bastipnt/passmgr

Zero-knowledge password manager — cross-platform web + mobile, TypeScript monorepo. Early prototype.

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Last synced: 24 Jun 2026

https://github.com/aleff-github/crypto-toolkit

Offline VSCode extension for encoding, decoding, hashing, JWT decoding, AES utilities, HMAC and Smart Detect directly from the editor context menu.

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Last synced: 25 Jun 2026

https://github.com/rub-nds/ssh-strict-kex-violations-state-learning-artifacts

Artifacts for the paper "Finding SSH Strict Key Exchange Violations by State Learning", accepted at the ACM Conference on Computer and Communications Security (CCS) 2025.

artifacts attack cryptography cve-2025-32433 cve-2025-32942 ssh statelearning strict-kex vulnerability

Last synced: 25 Jun 2026

https://github.com/erik-castro/devsecurity

Colecao de 5 livros tecnicos open-source sobre seguranca de software em portugues (PT-BR): Security-Driven Development, DevSecOps, Analise de Malware, Concorrencia Segura e Criptografia Engenheira. C++17/20, CVEs documentados, 300K+ linhas.

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