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The problem
Managing and syncing passwords securely across multiple devices while maintaining user privacy is complex and often dependent on third-party cloud providers.
Scroll for the story
01 Overview
Passmate is a secure password manager built with Java and JavaFX. It features end-to-end encryption, multiple vaults for password organization, and seamless cross-device synchronization through a Dockerized infrastructure. Designed as a practical cybersecurity-focused project for exploring encryption best practices and real-world data protection challenges.
02 The story
Passmate began as a practical exploration of encryption best practices. I designed it to be a fully-featured password manager with a focus on user privacy and security. The app features AES-256 encryption for all stored credentials, with a zero-knowledge architecture that ensures even the application server cannot access your unencrypted data.
Key technical highlights include secure vault management, cross-device synchronization, password strength analysis, and a clean interface built with Java and JavaFX
03 Problem, solution, impact
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The solution
Developed Passmate — a self-hosted password manager with encrypted local storage and secure synchronization. Designed the architecture using Java for backend, JavaFX for a smooth interface, and Docker for reproducible environments.
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The impact
Empowers users to take control of their password data without relying on external services. Enhances cybersecurity habits by promoting local encryption and user-managed vaults.
AES-256Encryption Strength
< 1s local vault syncSync Speed
0%User Data Exposure
04 Features
- End-to-End Encryption01
- Multiple Vaults02
- Cross-Device Sync03
- Password Strength Analysis04
JavaJavaFXMavenDockerJavaJavaFXMavenDockerJavaJavaFXMavenDockerJavaJavaFXMavenDocker
05 Guided tour
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- 01 / 04
End-to-End Encryption
Passmate began as a practical exploration of encryption best practices.
- 02 / 04
Multiple Vaults
I designed it to be a fully-featured password manager with a focus on user privacy and security.
- 03 / 04
Cross-Device Sync
The app features AES-256 encryption for all stored credentials, with a zero-knowledge architecture that ensures even the application server cannot access your unencrypted data.
- 04 / 04
Password Strength Analysis
Key technical highlights include secure vault management, cross-device synchronization, password strength analysis, and a clean interface built with Java and JavaFX Developed Passmate — a self-hosted password manager with encrypted local storage and secure synchronization.
I built Passmate to deepen my knowledge of encryption and security-oriented Java and JavaFX architectures. It's both a portfolio project and a personal tool for secure credential management.
A note from Senan
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