SecurePass Manager 🔐

A secure, command-line password manager built from scratch in C++ with military-grade encryption.

Features

• 🔒 Secure Encryption - AES-256 encryption using libsodium
• 👥 Multi-User Support - Separate encrypted vaults for each user
• 💾 Persistent Storage - Auto-saves passwords to encrypted file
• 🛡️ Master Passwords - Key derivation with Argon2
• ⚡ Fast Lookups - Custom hash table with double hashing
• 📝 Clean CLI - Simple, intuitive command-line interface

Installation

Prerequisites

• C++17 compiler
• libsodium development libraries

Linux (Ubuntu/Debian)

sudo apt-get install libsodium-dev
git clone https://github.com/illegitie/secure_password_manager
cd secure_password_manager
make
./password_manager

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Usage

./password_manager

# Register a new user
> register alice mysecret123

# Login
> login alice mysecret123

# Add a password
> add google alice@gmail.com password123

# Retrieve a password  
> get google alice@gmail.com

# List all passwords
> list

# Remove a password
> remove google alice@gmail.com

# Logout
> logout

File Format

Passwords are stored in data.txt with this secure format:

[USER]
username password_hash encryption_key
[PASSWORDS]
service username encrypted_password_hex
[END_USER]

Technical Details

• Hash Table: Double hashing collision resolution
• Resizing: Automatic growth/shrinking based on load factor
• RAII: Automatic memory management
• Exception Safety: Proper error handling throughout

🧑‍💻 Author: illegitie

Built with ❤️ and C++