🔐 SecureSend

Zero-Knowledge File Encryption in Your Browser

A privacy-focused, client-side file encryption tool that runs entirely in your browser. No servers, no tracking, no data storage.

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⚠️ Disclaimer

THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.

• This is an experimental educational project
• NOT recommended for highly sensitive or classified documents
• No guarantee against security vulnerabilities
• Users accept all risks when using this tool
• The developer assumes no liability for data breaches, encryption failures, or any other damages
• Always maintain secure backups of important data
• Use at your own risk

For critical security needs, consult professional security solutions.

✨ Features

• RSA-4096 Key Generation - Military-grade encryption keys generated in your browser
• File Encryption - Encrypt any file for specific recipients using their public key
• File Decryption - Decrypt files sent to you using your private key
• Zero-Knowledge Architecture - All operations happen client-side
• No Data Storage - Nothing is ever uploaded, tracked, or stored
• Downloadable Keys - Export your keys as text files for safekeeping
• No Backend Required - Pure HTML/CSS/JavaScript
• Cross-Platform - Works on desktop, mobile, and tablets
• Open Source - Fully auditable code

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🎯 Use Cases

• Send sensitive documents securely
• Share confidential contracts
• Exchange medical records privately
• Transfer business documents safely
• Maintain end-to-end encryption without third parties

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🚀 Quick Start

For Recipients (Receiving Encrypted Files):

1. Generate Your Keys

   • Go to the Generate Keys tab
   • Click "Generate New Key Pair"
   • Download both public_key.txt and private_key.txt
   • ⚠️ Keep your private key secret!

2. Share Your Public Key

   • Send your public_key.txt to people who want to send you encrypted files
   • You can share this via email, WhatsApp, etc. - it's safe!

3. Decrypt Files

   • When you receive an encrypted .bin file:
   • Go to the "Decrypt" tab
   • Paste your private key
   • Select the encrypted file
   • Click "Decrypt File"
   • Your original file will be downloaded

For Senders (Encrypting Files):

1. Get Recipient's Public Key

   • Ask the recipient to send you their public_key.txt

2. Encrypt a File

   • Go to the "Encrypt" tab
   • Paste the recipient's public key
   • Select the file you want to encrypt
   • Click "Encrypt File"
   • An encrypted .bin file will be downloaded

3. Send the Encrypted File

   • Send the .bin file to the recipient
   • Only they can decrypt it with their private key!