🔐 VaultID

Portable Identity Layer for the Decentralized Web

Wallet-encrypted OAuth sessions. One identity across all devices.

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💡 The Problem

Session data is fragmented across devices and vulnerable to centralized breaches. Users re-authenticate constantly while losing control over their identity footprint.

✨ The Solution

VaultID is a portable identity layer where session data is encrypted client-side using AES-GCM and stored on IPFS. The blockchain contract acts as a public, tamper-proof anchor for session metadata — no sensitive data on-chain, ever.

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📦 Monorepo Structure

VaultID/
├── blockchain/          # Solidity contracts & deployment
│   ├── contracts/       # VaultID.sol
│   ├── test/            # Comprehensive test suite
│   └── ignition/        # Deployment modules
└── extension/           # Browser extension (React + Vite)
    └── src/             # Extension source

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🔑 Smart Contract Features

Feature	Description
One Vault Per Address	Each wallet owns exactly one vault
EIP-712 Meta-Transactions	Gasless rotations via relayer
EIP-1271 Support	Contract wallet compatibility
Strict Sequence Monotonicity	Replay attack prevention
Permanent Revocation	Kill switch with no re-registration
Zero On-Chain Secrets	Only hashes and commitments stored

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🚀 Quick Start

Prerequisites

• pnpm ≥ 8.0.0
• Node.js ≥ 18.0.0

Installation

pnpm install

Run Tests

cd blockchain
pnpm hardhat test

Deploy to Sepolia

cd blockchain
pnpm hardhat keystore set SEPOLIA_PRIVATE_KEY
pnpm hardhat ignition deploy --network sepolia ignition/modules/VaultID.ts

Run Extension (Dev)

pnpm dev

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🛠️ Tech Stack

Blockchain

• Viem
• Solidity 0.8.19
• Hardhat 3 (Beta)
• OpenZeppelin Contracts

Extension

• Vite
• React 18
• shadcn/ui
• TypeScript
• Wagmi + Viem
• AES-GCM Encryption

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👥 Team [object Object]

Built with ☕ and 🔥 at ETHIndiaVilla 2025 hosted by Devfolio

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📄 License

GPL-3.0-or-later