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: 2026-07-01 00:06:48 UTC
JSON Representation

https://github.com/systemslibrarian/crypto-lab-curve-lens

Browser-based elliptic curve demo — point addition, scalar multiplication, and live ECDH across P-256, Curve25519, and secp256k1. Real field arithmetic. No backends. No simulated math.

browser crypto-lab cryptography curve25519 ecc ecdh elliptic-curves noble-curves p-256 point-addition scalar-multiplication secp256k1 typescript visualization vite

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-padding-oracle

Browser-based CBC padding oracle attack demo — full Vaudenay 2002 chosen-ciphertext attack with real AES-CBC, byte-by-byte plaintext recovery, and coverage of ASP.NET, Lucky Thirteen, and POODLE exploits. No backends. No simulated math.

aes-cbc attacks browser chosen-ciphertext cryptanalysis crypto-lab cryptography lucky-thirteen padding-oracle pkcs7 poodle tls typescript vaudenay vite

Last synced: 01 Jun 2026

https://github.com/timyiu478/pwn.college

Learn to Hack in a hands-on fashion

binary-exploitation cryptography hacking network-security reverse-engineering system-security web-security

Last synced: 09 Feb 2026

https://github.com/caveyra/electron-executor-11

Roblox Electron Executor is one of the most favorite Roblox Executors at the moment. Before I tell you how to download Electron Executor, let me tell you that it is currently available safely for Windows. But it is not officially available for Android users as of now but the update is coming and will be launched soon.

cryptography electron electron-app electron-exploit electron-v3 gpg mobile nodejs offline privacy python react security

Last synced: 06 May 2026

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

Identity and trust tools for AI agents — MCP server

agent-trust ai-agents cryptography did identity mcp mcp-server python trust verification

Last synced: 06 May 2026

https://github.com/systemslibrarian/crypto-lab-psi-gate

Browser-based Private Set Intersection demo implementing classic DH-PSI (Meadows 1986, Huberman-Franklin-Hogg 1999) over ristretto255 with RFC 9380 hash-to-curve. The primitive behind Signal contact discovery and Apple password monitoring.

contact-discovery crypto-lab cryptography ddh dh-psi diffie-hellman hash-to-curve noble-curves privacy-preserving private-set-intersection psi rfc-9380 ristretto255 secure-computation secure-multi-party-computation secure-two-party-computation signal-protocol

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-mceliece-gate

Browser-based Classic McEliece demo — the oldest post-quantum KEM (1978), binary Goppa codes, visceral 261KB public key visualization, and four-way comparison against ML-KEM, BIKE, and HQC. No backends. No simulated math.

aes-256-gcm binary-goppa browser code-based crypto-lab cryptography goppa-codes kem lattice mceliece nist post-quantum pqc typescript vite

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-patron-shield

Browser-based demo of two-server Information-Theoretic Private Information Retrieval (IT-PIR) — applied to library catalog privacy. Because patrons deserve mathematical guarantees, not just policy promises.

crypto-compare cryptography information-theoretic-security library-privacy pir private-information-retrieval xor

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-sphincs-ledger

Browser-based demo of SLH-DSA (SPHINCS+), a hash-based post-quantum digital signature scheme standardized as NIST FIPS 205

browser-demo crypto-lab cryptography digital-signatures hash-based-signatures javascript nist-fips-205 post-quantum-cryptography slh-dsa sphincs-plus

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-lattice-fault

Browser-based lattice PQC implementation attack demo — NTT power analysis (ML-KEM CPA), rejection sampling fault bypass (ML-DSA key recovery), KyberSlash timing side-channel, faulty KECCAK seed injection. Mathematical security ≠ implementation security. No backends. Simulated attacks.

crypto-lab cryptography dilithium fault-injection kyber kyberslash ml-dsa ml-kem ntt post-quantum power-analysis side-channel timing-attack

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-blind-oracle-api

Browser-based Rust + Axum + TFHE-rs backend for crypto-lab-blind-oracle — gate-bootstrapped homomorphic addition on FheUint8 ciphertexts. Holds only a ServerKey. Cannot decrypt its own output.

axum crypto-lab cryptography fhe homomorphic-encryption privacy rust tfhe webassembly

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-silent-tally

Browser-based demo of secure multi-party computation — five hospitals compute combined enrollment without revealing individual counts. Shamir SSS · additive homomorphism · GF(2⁶¹-1) · no trusted third party.

additive-homomorphism cryptography finite-field information-theoretic-security lagrange-interpolation mpc secure-multiparty-computation shamir-secret-sharing

Last synced: 01 Jun 2026

https://github.com/shazeus/passforge

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

cli cryptography entropy hibp passphrase password-generator passwords pyperclip python secrets security terminal

Last synced: 09 Jun 2026

https://github.com/vaibhavdixit09/taskmanagemnetfrontend

TaskMaster Pro - Advanced Task Management System with Google Authentication

cron cryptography css3 expressjs javascript jsx mongodb nodejs passportjs reactjs

Last synced: 26 Feb 2026

https://github.com/davidbuchanan314/cryptopals-python3

Yet Another Cryptopals solution repo. Implemented in modern-ish python3. A mixture of procedural and functional coding styles. But no OO! :P

aes cracking cryptography cryptopals python3 xor

Last synced: 10 Jun 2025

https://github.com/wkhallen/easyencrypt

Easy encryption

aes cryptography python rsa

Last synced: 22 Mar 2025

https://github.com/hjwk/decipher

cryptography go golang

Last synced: 21 Feb 2026

https://github.com/thenareshofficial/password-manager

Password Manger in Python

cli-tool cmd cryptography cybersecurity-tool docker encryption-decryption github linux master-password password password-manager password-manager-cli pbkdf2 pip python python-docker python3 security-tools strong-password-generator tools

Last synced: 12 Apr 2026

https://github.com/reznik99/cryptotools

Crypto playground in your browser

cryptography material-ui pkcs1 pkcs10 pkcs8 react sec1 subtlecrypto x509

Last synced: 09 Feb 2026

https://github.com/alfahami/landcertificate

An admin/client land certficate requester application built on top of Hyperledger where clients request a land certificate to a land conserver(admin) who will deliver the certificate.

blockchain-technology blockhain cluster cryptography dapps hyperledger hyperledger-fabric land landmanagement mongodb mongodb-database nodejs qrcode wallet

Last synced: 06 May 2026

https://github.com/advaith7joshi/project-nexus

Simplified demonstration of blockchain workflow

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Last synced: 12 Jun 2025

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/edoars/public-key-crypto-notes

LaTeX notes (in italian) for the undergraduate Public-key Cryptography course at University of Roma Tre

cryptography latex-notes math notes public-key-cryptography

Last synced: 10 Feb 2026

https://github.com/solidiquis/ether

Symmetric key encryption command-line utility.

command-line command-line-tool cryptography rust

Last synced: 28 May 2026

https://github.com/nickylogan/kryptograf

A POC of encryption algorithms

cryptography javascript reactjs

Last synced: 07 May 2026

https://github.com/atropinetears/atropinetears.github.io

My personal site to not only demonstrate my web design / web development skills, but also to list out my blog posts, projects, resources, and other information.

0xsilene blog cryptography github-io github-pages security web web-design web-development website

Last synced: 27 Feb 2026

https://github.com/hrvadl/security

Security (cryptography) labs

cipher cryptography encryption encryption-decryption golang rsa security signature

Last synced: 25 Mar 2025

https://github.com/8go/hash_scrypt

Small CLI app in Python to hash passphrase for key derivation based on scrypt, for key derivation, for password stretching, and for hashing.

cli cli-app cryptography hash hashing kdf passlib password-hash password-stetching pyca python python3 scrypt

Last synced: 07 Apr 2025

https://github.com/moviet/php-encryption

Crypsic - A speed metal encryption library for php

aes-cipher cryptography decryption encryption encryption-library password-hash standalone symmetric-encryption

Last synced: 20 Feb 2026

https://github.com/projects-developer/top-cryptography-projects-with-source-code

Cryptography is the practice and study of techniques for secure communication by transforming plaintext. Top 10 Cryptography Projects Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

aes-communication-security b-techprojects bca-projects communication computer-science-projects computerscienceprojects cryptography diffie-hellman-key-exchange final-year-projects finalyearprojects gif-malware-project m-techprojects mca-projects steganography super-cipher-projects triple-des-projects

Last synced: 07 Jan 2026

https://github.com/chardoncs/minotp

Simple OTP library for Rust.

cryptography hotp one-time-password otp rust totp

Last synced: 10 Feb 2026

https://github.com/ashirwadpradhan/intragit

A SaaS secure VCS (based on Git) for confidential repositories

aes-gcm certificate-authority certificate-signing-request confidential-repositories cryptography envelope-encryption git public-key-infrastructure saas-secure-vcs

Last synced: 19 Apr 2026

https://github.com/a-s-russo/eleventh-hour-mystery

Decipher the paragraph of ciphertext in 'The Eleventh Hour: A Curious Mystery' by Graeme Base at the end of the book using a Caesar cipher

caesar-cipher cryptography

Last synced: 29 May 2026

https://github.com/realabbas/offline-blockchain-transaction-signing-private-wallet

A private offline wallet for signing incoming transaction from web interface

cryptography offline public-private-key qrcode signing transaction wallet

Last synced: 29 May 2026

https://github.com/bdware/tendermint

⟁ Tendermint Core (BFT Consensus) in Go

bdware bft blockchain consensus consistency cryptocurrency cryptography db distributed-systems golang libp2p tendermint

Last synced: 07 May 2026

https://github.com/praveena2j/traitor-tracing-system-based-on-pca

A Code and Domain Independent Traitor Tracing System

cryptography fingerprint-authentication fingerprinting image-processing machine machine-learning principal-component-analysis security watermarking

Last synced: 07 May 2026

https://github.com/abund4nt/h3xtel-scripts

Repository with solution and explanation of the challenges of the H3xtel course.

cryptography ctf mathematics python

Last synced: 24 Mar 2025

https://github.com/midnight-wonderer/embedded-xoodyak

Lightweight, zero-allocation Xoodyak cryptographic scheme in C for microcontrollers.

c-library cortex-m cryptography embedded esp8266 microcontroller xoodoo xoodyak

Last synced: 28 May 2026

https://github.com/wissensalt/butop

Cryptography File Application

cryptography swing-gui

Last synced: 12 Jan 2026

https://github.com/harshanalluru/cryptography-cs641

cryptography decryption-algorithm des pyautogui pyperclip python

Last synced: 25 Aug 2025

https://github.com/keidarcy/learn-cryptography-nodejs

learn-cryptography-nodejs

crypto cryptography javascript nodejs typescript vitest

Last synced: 08 May 2026

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

An e2ee toolkit for the web in early stage development

cryptography rust wasm

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/tatemsoft/cryptr

A simple shell utility for encrypting and decrypting files using OpenSSL.

aes-256 aes-encryption bash bash-script cryptography decryption encryption openssl shell-script

Last synced: 08 May 2026

https://github.com/bokelleher/sesame-sdk

Portable SDK and conformance vectors for SESAME, the proposed SCTE 130-9 security layer for the ESAM interface: HMAC auth, channel-scoped authorization, and AES-256-GCM payload encryption over HTTP headers.

ad-insertion aes-gcm authentication cryptography esam hmac rust scte scte-130 sesame

Last synced: 15 Jun 2026

https://github.com/fsanaulla/splabs

c cryptography

Last synced: 10 Jun 2026

https://github.com/aeliot-tm/doctrine-encrypted-bundle

Doctrine Encrypted bundle permits to encrypt/decrypt separate columns of database via Doctrine column types.

ast cryptography decryption doctrine doctrine-extension doctrine-orm encryption php routines symfony-bundle

Last synced: 12 Feb 2026

https://github.com/shanthanu9/cryptopals-solutions

Solutions for Matasano Cryptopals challenges

cryptography cryptopals-challenges

Last synced: 12 Jun 2025

https://github.com/thecolonycc/attestation-envelope-spec

Cross-platform attestation envelope spec for agent-native claims. Pointer-based evidence, custodian-signed coverage metadata, sigchain over a typed witnessed claim.

agent-identity agent-security ai-agents attestation colony cryptography ed25519 json-schema provenance specification thecolony verifiable-credentials

Last synced: 24 Jun 2026

https://github.com/francislauriano/chatsoftex

Plataforma desenvolvida em Python que visa automatizar e agilizar o processo de avaliação de projetos de inovação tecnológica, utilizando inteligência artificial e critérios padronizados com base na Lei do Bem.

cryptography fernet firebase flask flask-jwt-extended hugging-face-transformers numpy openai pdfplumber postgresql pyjwt pymupdf-fitz pypdf2 python pytorch scikit-learn scipy spacy sqlalchemy tensorflow

Last synced: 03 Apr 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.

aes base64 cryptography decoding developer-tools encoding hashing hmac jwt offline-first typescript vscode-extension

Last synced: 25 Jun 2026

https://github.com/phenomsg/password-manager

It is a Python password manager using Fernet encryption. It securely stores and manages passwords, ensuring confidentiality and convenience for users.

cryptography decryption encryption fernet python

Last synced: 28 Dec 2025

https://github.com/nvnx7/cryptopals-cryptography-cracks

Rust implementation of cracks of cryptopals challenges

challenge crypto cryptography rust

Last synced: 22 Dec 2025

https://github.com/acestojanoski/key-forge

Effortlessly encrypt and decrypt text in an instant with our user-friendly, open-source tool.

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Last synced: 16 Apr 2026

https://github.com/tegmentum/secure-log

Tamper-evident audit log for Rust: hash-chained entries, Merkle-sealed segments, externally-signed checkpoints, witness anti-equivocation, and AEAD payload sealing — native crates plus WASI Preview 2 components.

audit-log audit-logging component-model cryptography hash-chain merkle-tree rust security tamper-evident tpm transparency-log wasi wasm webassembly

Last synced: 25 Jun 2026

https://github.com/dhruvsrikanth/communication-and-encryption-between-different-networks

A project a classmate and I undertook to better understand and develop end-to-end encryption between a client and server on a vulnerable network!

computer-networks cryptography decryption encryption end-to-end-encryption networks python

Last synced: 23 Apr 2025

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/alexyer/xxxdh-js

WASM wrapper around xxxdh library implementing Extended Triple Diffie-Hellman key exchange.

cryptography diffie-hellman key-exchange-protocol

Last synced: 17 Jan 2026

https://github.com/akhilk07/zama-fhe

Explore detailed technical guides for the Zama FHE protocol. Set up your environment on Linux, Windows, or GitHub Codespace. 🚀💻

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Last synced: 09 May 2026

https://github.com/glitchedpolygons/glitchaes.blazorwebapp

GlitchAES (say: "glitches") is a web-based (zero-knowledge, static client-side only) GUI that wraps AES-GCM.

aes cryptography decryption encryption gcm symmetric

Last synced: 14 Feb 2026

https://github.com/asjordi/basicjavablockchain

Simple Java Blockchain

blockchain blockchain-demos cryptography java

Last synced: 24 Mar 2025

https://github.com/l1asis/vault-tar

AES-256-GCM file and directory encryption CLI with chunked streaming, configurable compression, and output splitting.

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Last synced: 14 Feb 2026

https://github.com/aws/amazon-s3-encryption-client-python

Client-side encryption for S3 using the boto3 SDK

aws aws-s3 boto3 client-side-encryption cryptography s3

Last synced: 29 May 2026

https://github.com/defeo/hhs-keyex

Research paper on improving the Hard Homogeneous Spaces key exchange protocol (by Couveignes and Rostovtsev-Stolbunov)

asymmetric-cryptography cryptography elliptic-curves isogenies key-exchange-protocol research-paper

Last synced: 11 Mar 2026

https://github.com/kevincharm/blstoise

BLS12-381 + pairings + RFC9380 + BLS sigs

bls bls12-381 cryptography

Last synced: 28 Feb 2026

https://github.com/kunalpisolkar24/is_lab

Collection of practical codes for Savitribai Phule Pune University's Information Security Laboratory (310258) .

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Last synced: 04 Jul 2025

https://github.com/yoannchb-pro/private-html

PrivateHTML | Make the user access your page with a key

cryptography private-code

Last synced: 23 Aug 2025

https://github.com/samuel-lucas6/ctx.net

Chan and Rogaway's fully committing AEAD construction using ChaCha20-Poly1305 and BLAKE2b-160.

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Last synced: 27 Mar 2025

https://github.com/ilario-pierbattista/tlc-sec

algorithm cryptography primitives security security-tools symmetric-key-cryptography telecommunications

Last synced: 09 May 2026

https://github.com/markcda/unitech-infosec-basics-practice-2nd-gr

Учебно-лабораторная практика за 2-й курс

cryptography university-coursework

Last synced: 15 Feb 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.

biputils bitcoin bitcoin-finder bitcoin-recovery bitcoin-stealer bitcoin-wallet cryptography ethereum ethereum-finder ethereum-stealer ethereum-wallet hashlib

Last synced: 09 May 2026

https://github.com/magical/gimli

Go implementation of http://gimli.cr.yp.to/

cryptography

Last synced: 24 Mar 2025

https://github.com/siterelenby/keyquorum

Shamir secret sharing daemon for distributed teams. Memory hardened, designed to prevent intercepting or handling another user's key or the secret itself, without jank or vulnerability points like shared tmux sessions.

cli cryptography cryptography-tools distributed-teams key-management linux rust secret-sharing security shamir shamir-secret-sharing

Last synced: 12 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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Last synced: 25 Jun 2026

https://github.com/animo/expo-secure-environment

Expo Module for cryptographic operations using the devices Secure Environment behind biometric authentication.

android biometry cryptography expo ios react-native secure-environments typescript

Last synced: 16 Feb 2026

https://github.com/utkarsha666/policy-engine-peaas

This project is written in Netbeans.

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Last synced: 10 Apr 2026

https://github.com/jadsongmatos/cryptopals

attacks challenges ciphers cryptography decryption encryption hashes security

Last synced: 11 May 2026

https://github.com/gauravg-20/elliptics

cryptography encryption-algorithms encryption-decryption

Last synced: 14 Aug 2025

https://github.com/magical/libargon2

fork of the argon2 reference implementation

cryptography

Last synced: 24 Mar 2025

https://github.com/harmin-parra/x509-wrapper

Wrapper for the pyca/cryptography package to query attributes of X509 cryptographic objects in a fast and simple way

cryptography python python3 x509

Last synced: 12 Jun 2025

https://github.com/pedroalbanese/leacrypt

TTAK.KO-12.0223 Lightweight Encryption Algorithm (ISO/IEC 29192-2:2019) with Galois/Counter Mode (LEA-GCM)

aead cryptography golang lea symmetric-encryption

Last synced: 16 Jun 2026

https://github.com/projects-developer/diffie-hellman-key-exchange-algorithm-cryptography-project

This project implements the Diffie-Hellman Key Exchange Algorithm, a popular cryptographic protocol that enables two parties to establish a shared secret key over an insecure communication channel. Diffie-Hellman-Key Exchange Algorithum Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video

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Last synced: 01 Mar 2026

https://github.com/filiprokita/goodpassword

GOOODPASSWORD is a password generator that uses algorithms to create strong, random passwords. With customizable length and complexity options, it helps users generate secure passwords that meet even the most stringent security requirements.

cryptography password password-generator python python3 randomness security simple

Last synced: 24 Mar 2025

https://github.com/qorri-di/convert-tools

Convert Tools for Document, Image, Video and File

and convert cryptography document file for image pdf pdf-converter pdf-document pdf-generation pdf-viewer steganography tools video

Last synced: 20 Mar 2026

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/magical/fastpbkdf2

A faster implementation of x/crypto/pbkdf2

cryptography

Last synced: 24 Mar 2025

https://github.com/denatajp/caesar-chiper

Implementation of Caesar Chiper in encrypts and decrypts text by shifting letters by a user-defined value. It takes input text and a shift value, applies the shift to encrypt, and reverses the shift to decrypt. The program demonstrates basic encryption and decryption using this simple technique.

caesar-cipher chiper cryptography

Last synced: 26 Aug 2025

https://github.com/usherlabs/ecdsa-jwt

ECDSA challenge-based authentication with JWT session management

authentication cryptography ecdsa jwt rust

Last synced: 20 Jan 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/artainmo/ft_ssl

42 school project. Recoding the MD5 and SHA-256 cryptographic hashing algorithms in C.

42shcool algorithm c cryptography cybersecurity

Last synced: 16 Mar 2025

https://github.com/jnbdz/cryptography-quickstarts

🔐 Cryptography | Quickstarts 🔐

cryptography quickstart quickstarts

Last synced: 02 Mar 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.

automation cryptography eclipse-ide java javafx md5-hash ui-design ux-design