🕵️‍♂️ StealthDrop — Privacy-First On-Chain Secret Sharing on Solana

Send encrypted messages, images, and files securely across Solana.

StealthDrop is a privacy-first content sharing protocol that lets users send secret messages, PDFs, images, and text files to any Solana wallet — ensuring that only the intended recipient can decrypt and view the content.

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🔒 Overview

StealthDrop introduces a new layer of privacy to the Solana ecosystem by enabling encrypted communication and file sharing directly on-chain.

Each secret (message, file, or NFT clue) is encrypted with an ephemeral symmetric key and linked to a stealth address (PDA) derived from the recipient’s wallet.
Only the holder of the target wallet can decrypt and reveal the message, creating a fully private, trustless communication channel.

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🌟 Key Features

• 🧩 Encrypted Message & File Sharing
  • Send text, PDFs, images, or .txt files privately on Solana.
• 🕶️ Stealth Addresses (PDAs)
  • Secrets are tied to hidden addresses derived from recipient wallets.
• 🔑 Ephemeral Encryption
  • Each message uses a unique symmetric key, discarded after encryption.
• 🪙 NFT-Linked Secrets (Future)
  • Gate or unlock encrypted content via NFT ownership verification.
• ⚙️ On-Chain Verification
  • Built for integration with Solana programs and token extensions.
• 🧠 Client-Side Security
  • Encryption and decryption happen fully in the browser — no central server, no data exposure.

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🧰 Tech Stack

• Frontend: React + Tailwind + Framer Motion
• Wallet Integration: @solana/wallet-adapter-react
• Blockchain: Solana Web3.js
• Crypto: Custom AES-GCM encryption via tweetnacl & ephemeral keypairs
• Storage (optional): IPFS or Arweave (for large files or NFT metadata)

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🧭 Architecture Overview

flowchart LR
  A[User Encrypts Message/File] --> B[Ephemeral Key Generated]
  B --> C[Encrypted Payload Created]
  C --> D[Stored On-Chain or IPFS via PDA]
  D --> E[Recipient Wallet Connects]
  E --> F[Ownership Verified + Key Derived]
  F --> G[Decryption in Browser]
  G --> H[Secret Revealed Privately]
🚀 How It Works
🔐 Sending a Secret
Connect your wallet.

Enter a message or upload a file.

StealthDrop encrypts it using an ephemeral key.

The ciphertext + key reference are tied to a stealth address (PDA) on Solana.

The receiver can later claim and decrypt it privately.

🗝️ Claiming a Secret
Receiver connects wallet and provides ciphertext + ephemeral key.

Client verifies ownership of the stealth PDA.

Message or file is decrypted locally in the browser.

🖥️ UI Components
Component	Description
SendSecret.tsx	Encrypts message/files and generates ciphertext + keypair
ClaimSecret.tsx	Decrypts the received message or file, verifies ownership
crypto.ts	Handles symmetric key encryption/decryption
connection.ts	Solana RPC setup for transactions & PDAs

🧩 Example Use Cases
🔏 Private DAO communication

💬 Encrypted on-chain chat

🧠 Confidential airdrops or whitelists

📁 Secure document sharing

🎨 NFT-gated content drops (future)

🧠 Security Design
Client-side encryption only — no server ever sees the plaintext.

Ephemeral key generation — new keys per message, reducing attack surface.

Stealth PDAs — hide sender/receiver on-chain.

NFT verification — optional access control via token ownership.

No custodial storage — users maintain full control of their data.

🧪 Local Development
bash
Copy code
# Clone the repo
git clone https://github.com/<your-handle>/stealthdrop.git

# Navigate to project
cd stealthdrop

# Install dependencies
npm install

# Start the development server
npm run dev
Then open:
👉 http://localhost:5173

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