Password-Manager

A secure console-based password management solution—initially console-only, with planned UI and advanced feature improvements—that stores and encrypts your passwords using robust cryptographic algorithms.

Project Structure

📦 PasswordManager
├── 📂 Core              # Core application logic
│   ├── IPasswordManager.cs         - Main service interface
│   ├── PasswordManagerService.cs   - Core implementation
│   ├── IEncryptionService.cs       - Encryption contracts
│   ├── XorEncryptionService.cs     - XOR+HMAC implementation
│   ├── IAuthenticationService.cs   - Auth contracts
│   ├── SHA_1AuthenticationService.cs - SHA-1 implementation
├── 📂 Models            # Data models
│   ├── PasswordEntry.cs            - Password entry structure
├── 📂 Database          # Database operations
│   ├── IDatabaseService.cs         - DB contracts
│   ├── SQLiteDatabaseService.cs    - SQLite implementation
├── 📂 UI                # User interface
│   ├── IUserInterface.cs           - UI contracts
│   ├── ConsoleUserInterface.cs     - Console UI implementation
│   ├── ConsoleHelper.cs            - UI utilities
│   ├── IInputValidator.cs          - Validation contracts
│   ├── InputValidator.cs           - Input validation
└── Program.cs          # Entry point

UML Activity Diagram

Features

• User Authentication with SHA-1 Hashing
• XOR Encryption with HMAC-SHA256
• Multi-user (separate database per user)
• Strong Password Generator
• Robust handling for any unexpected input to ensure reliability and security.
• Password Entry Management
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Technical Details

Authentication

• Implements SHA-1 hashing for master passwords to securely safeguard each user credentials in thier setion at the Password Manager.

Encryption

• Enhance the XOR cipher with HMAC-SHA256 to securely encrypt each password before storing it in the database.

Database Structure

• Each user has a dedicated SQLite database, named after their email, which is loaded upon successful login. All stored passwords within the database are securely encrypted, ensuring robust privacy and security.
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Handling unexpected input and wrong confirmation

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Installation

Prerequisites

• .NET 6.0 SDK or later
• GIT

Steps

1. Clone the repository

git clone https://github.com/yourusername/PasswordManager.git
cd PasswordManager

2. Restore dependencies:

Restore dependencies:

3. Run the application:

dotnet run

Contributing

We welcome contributions! Please follow these guidelines:

1. Fork the repository
2. Create a feature branch:

git checkout -b feature/your-feature-name

3. Implement your changes following existing patterns:

• Use interface-driven design
• Maintain separation between Core/UI/Database layers

4. Test thoroughly
5. Submit a Pull Request with description of changes