A modern, cryptographically secure password generator built with HTML, Tailwind CSS, and JavaScript. This tool allows you to generate high-entropy passwords using customizable Unicode character sets, with real-time entropy calculation and security feedback.

• Cryptographically secure password generation using window.crypto
• Support for extensive Unicode character sets
• Real-time entropy calculation (bits)
• Strength rating based on entropy
• Adjustable password length (8–128)
• Bulk password generation (up to 10,000)
• Download generated passwords as .txt
• Copy-to-clipboard functionality
• Rate-limited generation to prevent abuse
• Interactive UI with Tailwind CSS
• Built-in Bash file encryption utility (OpenSSL + PBKDF2)

Selectable character pools include:

• Latin (Standard)
• Latin (Extended)
• Cyrillic
• Asian (CJK, Hiragana, Katakana)
• Greek / Coptic / Hebrew
• Math & Symbols
• Box Drawing & Geometric
• Dingbats & Misc Symbols
• Emoji

At least one character set must be selected to generate passwords.

1. Open the HTML file in your browser:

open index.html

2. Configure settings:

   • Password length
   • Number of passwords
   • Character sets

3. Click Generate Passwords

4. Copy or download results

Entropy is calculated using:

H = L * log2(N) 

Where:

• L = password length
• N = character pool size

Uses:

window.crypto.getRandomValues()

This ensures:

• Non-predictable output
• Suitable for high-security use cases

• Displays summary instead of rendering >25 passwords
• Prevents UI lag for large outputs

• Exports generated passwords as .txt
• One password per line
• File name includes password count

Includes a ready-to-use Bash script for encrypting files securely.

• AES-256-CBC encryption
• PBKDF2 key derivation
• Optional secure deletion using shred
• Interactive CLI interface

chmod +x file_protector.sh ./file_protector.sh

• openssl
• shred (optional but recommended)

• Fully responsive layout
• Tailwind CSS styling
• Interactive sliders and inputs
• Copy-to-clipboard buttons
• Visual feedback and notifications

index.html # Main application file 

• Runs entirely client-side (no backend)
• Browser must support window.crypto
• Very large Unicode pools may affect performance slightly
• No persistent storage (by design for security)

• Use a password manager such as:
  • KeePass
  • Bitwarden
• Enable Full Disk Encryption (FDE):
  • BitLocker (Windows)
  • FileVault (macOS)
  • LUKS (Linux)
• Never store passwords in plain text

MIT License

This tool is intended for security research and personal use. Always follow best practices for password storage and management.