🛡️ Akhil Fortress

Akhil Fortress is a visually stunning, zero-knowledge, client-side password security tool and dashboard. It calculates mathematical information-theoretic entropy, scans for common leaked passwords (including complex leetspeak variants), flags personal identity leaks, and generates cryptographically secure alternatives or upgrades.

Built with a futuristic glassmorphic cyberpunk theme, it delivers real-time, high-performance visual feedback and guarantees absolute privacy by running entirely inside the local browser sandbox.

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🌟 Key Features

1. Mathematical Entropy Calculator

Calculates the exact strength of passwords using Shannon entropy: $$E = L \times \log_2(R)$$ Where:

• $L$ is the length of the password.
• $R$ is the size of the character pool (lowercase = 26, uppercase = 26, digits = 10, symbols = 33).

It applies automated entropy deductions for repeated characters (e.g., aaaa) and keyboard/alphabetical sequences (e.g., 12345, qwert, abcd).

2. Time-To-Crack Estimation

Simulates how long a hacker would take to crack the password under two environments:

• Offline Attack: High-speed offline cracking clusters (e.g., hashcat on multiple GPUs) running $10^{10}$ guesses/second.
• Online Attack: Standard remote network latency and rate-limiting limits running $100$ guesses/second.

3. Smart Dictionary & Leetspeak Decoding

• Scans passwords against a database of the most common leaked passwords, keyboard walks, and dictionary roots.
• Normalizes character substitutions to detect hidden patterns (e.g., P@$$w0rd is decoded to password and flagged as weak).
• Supported mappings: @/4 -> a, 3 -> e, 1/! -> i, 0 -> o, 5/$ -> s, 7 -> t, 8 -> b, 9 -> g.

4. Personal Context Leak Scan

Allows users to enter their username, nickname, or email context. The application flags any password containing these values to prevent targeted social engineering attacks.

5. Smart Upgrade Simulator

Recommends three categories of upgraded passwords derived from their input:

• Standard Complexity: Injects missing character classes and pads the length to at least 12 characters.
• Memorable Passphrase: Appends random memorable dictionary words separated by a delimiter, expanding length while remaining easy to remember.
• Full Cyber Shield: Alters characters to mixed-case, wraps the password in brackets, and appends a cryptographically secure 6-character random suffix.

6. Secure Random & Passphrase Generators

Includes a dedicated tabbed generator panel:

• Secure Random: Custom length, lowercase, uppercase, numbers, and symbols sliders.
• Memorable Passphrase (Diceware): Selects 3-8 random words from a curated list of easy-to-recall English nouns and adjectives.

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🛠️ Technology Stack

• Framework: React 19 + TypeScript
• Build Tool: Vite
• Icons: Lucide React
• Visual Effects: Canvas Confetti
• Styling: Pure vanilla CSS styled custom design system (Cyberpunk Glassmorphism)

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🚀 Getting Started

Prerequisites

Make sure you have Node.js installed.

Installation

1. Navigate to the repository directory:

   cd "d:\Code\Password Strength Checker"

2. Install the package dependencies:

   npm install

3. Spin up the development server:

   npm run dev

4. Open http://localhost:5173/ in your web browser.

Production Build

To compile a minified production bundle in the dist directory:

npm run build

To preview the production build locally:

npm run preview

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🔒 Zero-Knowledge Security Model

Unlike many online password checkers, Akhil Fortress is 100% client-side:

• No network requests: Passwords are never sent to external APIs or databases.
• Zero tracking: Computations and generators execute entirely in your local browser sandbox.
• Cryptographically Secure: Random passwords are generated using browser-native crypto.getRandomValues().