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group-e072
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proposal-4
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README.md
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README.md
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# 🗳️ P2P Verified Polling App
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# P2P Poll App
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A decentralized, real-time polling application built with **Nuxt 3**, **Yjs**, and **WebRTC**. This app allows users to create and participate in polls where every vote is cryptographically signed and verified peer-to-peer, ensuring data integrity without a central authority "owning" the results.
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---
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## 🌟 Key Features
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* **Serverless Real-time Sync:** Uses **Yjs** (CRDTs) and **WebRTC** to sync poll data directly between browsers. No database is required for live updates.
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* **Persistence with Nitro:** While the logic is P2P, the **Nuxt/Nitro** backend provides a "Snapshot" service to ensure polls persist even after all peers go offline.
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* **Cryptographic Integrity:** Every vote is signed using **RSA-PSS (Web Crypto API)**. Each user has a unique private key (stored locally via `.pem` files) to ensure votes cannot be forged or tampered with.
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* **Chained Verification:** Implements a "History-Signing" logic where each new vote signs the entire preceding state of the poll, creating a verifiable chain of trust.
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* **Privacy First:** Users identify via UUIDs and Public/Private key pairs rather than traditional accounts.
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---
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## ⚙️ How It Works
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### 1. Identity Creation
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When a new user is created, the system generates a unique **UUID (User ID)** and an **RSA Key Pair**. The user is prompted to save their **Private Key** as a `.pem` file, named after their User ID (e.g., `550e8400-e29b.pem`). This file acts as their "Passport"—it is never uploaded to the server and must be kept secure by the user.
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### 2. Authentication
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Upon returning to the app, users load their local `.pem` file. The application extracts the Private Key for signing and the UUID for identification. No passwords or central servers are involved in this local-first login process.
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### 3. Joining a Poll
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When a user joins a poll, the app fetches the latest binary snapshot from the server to populate a local **Y.Doc**. This ensures the user sees the current state immediately, even before connecting to other peers.
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### 4. The P2P Mesh
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The app establishes connections to other active voters via a WebRTC signaling server. Any changes made to the poll (adding options or voting) are broadcasted instantly to all peers using Conflict-free Replicated Data Types (CRDTs) to prevent sync conflicts.
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### 5. Casting a Signed Vote
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To ensure security, the voting process follows a strict cryptographic chain:
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* The app captures the current list of votes.
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* It appends the new vote data (User ID + Timestamp).
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* It signs the **entire array** (the previous history + the new vote) using the user's RSA private key.
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* The signed update is merged into the shared Yjs Map and broadcasted.
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### 6. Distributed Verification
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Whenever a peer receives a new update, they fetch the voter's **Public Key** from the API. They then verify that the signature matches the current state of the poll history. If a signature is invalid or the history has been tampered with, the vote is rejected by the peer's local state.
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---
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## 🛠️ Tech Stack
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* **Framework:** [Nuxt 3](https://nuxt.com/) (Vue 3 + TypeScript)
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* **Conflict-Free Replicated Data Types (CRDT):** [Yjs](https://yjs.dev/)
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* **P2P Transport:** `y-webrtc`
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* **Security:** Web Crypto API (SubtleCrypto)
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* **Backend/Storage:** Nitro (Nuxt's server engine) with filesystem storage drivers
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# AI Disclaimer
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This App was developed with the assistance of AI.
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# Nuxt Minimal Starter
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Look at the [Nuxt documentation](https://nuxt.com/docs/getting-started/introduction) to learn more.
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## Setup
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Make sure to install dependencies:
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```bash
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# npm
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npm install
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# pnpm
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pnpm install
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# yarn
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yarn install
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# bun
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bun install
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```
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## Development Server
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Start the development server on `http://localhost:3000`:
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```bash
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# npm
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npm run dev
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# pnpm
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pnpm dev
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# yarn
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yarn dev
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# bun
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bun run dev
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```
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## Production
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Build the application for production:
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```bash
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# npm
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npm run build
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# pnpm
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pnpm build
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# yarn
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yarn build
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# bun
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bun run build
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```
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Locally preview production build:
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```bash
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# npm
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npm run preview
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# pnpm
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pnpm preview
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# yarn
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yarn preview
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# bun
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bun run preview
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```
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Check out the [deployment documentation](https://nuxt.com/docs/getting-started/deployment) for more information.
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175
app/app.vue
175
app/app.vue
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<style>
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/* Basic styling to make it look clean */
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body {
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font-family: system-ui, -apple-system, sans-serif;
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background-color: #f4f4f9;
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color: #333;
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margin: 0;
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display: flex;
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justify-content: center;
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padding: 2rem;
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}
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header {
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margin-bottom: 2rem;
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text-align: center;
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}
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h1 { margin: 0 0 0.5rem 0; }
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input {
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flex-grow: 1;
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padding: 0.75rem;
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border: 1px solid #ccc;
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border-radius: 6px;
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font-size: 1rem;
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}
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button,
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.button {
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background: #3b82f6;
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color: white;
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border: none;
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padding: 0.75rem 1rem;
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border-radius: 6px;
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cursor: pointer;
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font-weight: bold;
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transition: background 0.2s;
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}
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button:hover,
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.button:hover { background: #2563eb; }
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.status {
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font-size: 0.85rem;
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color: #666;
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}
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.status .connected { color: #10b981; font-weight: bold; }
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.connectionFailed { color: #FF2525; font-weight: bold; }
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.poll-container {
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background: white;
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padding: 2rem;
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border-radius: 12px;
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box-shadow: 0 4px 6px rgba(0,0,0,0.1);
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width: 100%;
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max-width: 500px;
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}
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.back-btn {
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margin-left: 1rem;
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padding: 0.2rem 0.5rem;
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font-size: 0.7rem;
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background: #64748b;
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}
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/* Hide the actual file input */
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input[type="file"] {
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display: none;
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}
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</style>
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<template>
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<div class="poll-container">
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<header>
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<h1 @click="activePollId = null" style="cursor:pointer">P2P Polling App 🗳️</h1>
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<div class="status">
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<button v-if="activePollId" @click="activePollId = null" class="back-btn">← Back To List</button>
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<span :class="{ 'connected': isConnected }">
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● {{ isConnected ? 'Synced' : 'Waiting for other Peers...' }}
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</span>
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<span> | Peers online: {{ connectedPeers }}</span>
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<h2 v-if="connectionAttempFailed" class="connectionFailed">⚠ Connection to Signaling Server Failed!</h2>
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<div v-if="user===null" style="margin-top: 10px;">
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<button @click="createUser">Create New User</button>
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Or
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<label title="Select Key File">
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<span class="button">Login</span>
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<input
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type="file"
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accept=".pem"
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@change="loadUser"
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/>
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</label>
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</div>
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</div>
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</header>
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<main>
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<PollList v-if="!activePollId" :userid="user?.userid" @select-poll="selectPoll" />
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<Poll v-else :activePollId="activePollId" :userid="user?.userid" :poll-data="pollData" :addOption="addOption" :vote="vote"/>
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</main>
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</div>
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</template>
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<script setup lang="ts">
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import { v4 as uuidv4 } from 'uuid';
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const activePollId = ref<string | null>(null);
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const user = shallowRef<UserData | null>(null);
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const { pollData, isConnected, connectionAttempFailed, connectedPeers, addOption, vote } = usePoll(activePollId,user);
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const selectPoll = (id: string) => {
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activePollId.value = id;
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};
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const createUser = async () => {
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try {
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const keypair : CryptoKeyPair = await generateUserKeyPair();
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console.log('keypair:', keypair);
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const uuid = uuidv4();
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user.value = {
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userid: uuid,
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private_key: keypair.privateKey,
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public_key: keypair.publicKey,
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};
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const prvKeyString = await exportPrivateKey(keypair.privateKey);
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await savePrivateKeyToFile(prvKeyString,uuid+".pem")
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const pubKeyString = await exportPublicKey(keypair.publicKey);
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await $fetch(`/api/users/${uuid}`, {
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method: 'POST',
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body: { public_key: pubKeyString }
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});
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} catch (err) {
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user.value = null
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console.error("Failed to create new User!", err);
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}
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};
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const loadUser = async (event: Event) => {
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const target = event.target as HTMLInputElement;
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const file = target.files?.[0];
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if (file) {
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try {
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const content = await file.text();
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console.log("File loaded: ");
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if (file.name && content) {
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try {
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const uuid = file.name.replace(".pem", "");
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// Standardize the string for the importer
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const pkBase64 = content.replace(/-----BEGIN PRIVATE KEY-----|-----END PRIVATE KEY-----/g, "").replace(/\s+/g, "");
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const key = await stringToCryptoKey(pkBase64, "private");
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user.value = {
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userid: uuid,
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private_key: key,
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public_key: undefined, // Note: You might need to import a pub key too!
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};
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console.log("Login successful for:", uuid);
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} catch (err) {
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console.error("Crypto Import Error:", err);
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alert("The file content is not a valid Private Key.");
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}
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}
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} catch (e) {
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console.error("Failed to read file", e);
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}
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}
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};
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</script>
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@@ -1,83 +0,0 @@
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<style scoped>
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.poll-list {
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list-style: none;
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padding: 0;
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margin: 0;
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}
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.poll-item {
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display: flex;
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justify-content: space-between;
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align-items: center;
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padding: 1rem;
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background: #f8fafc;
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border: 1px solid #e2e8f0;
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border-radius: 8px;
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margin-bottom: 0.5rem;
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}
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.poll-title {
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font-size: 1.1rem;
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color: #3b82f6;
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text-transform: uppercase;
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letter-spacing: 1px;
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}
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.add-option-form {
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display: flex;
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gap: 0.5rem;
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margin-bottom: 2rem;
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|
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}
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.option-name { font-weight: 500; }
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.vote-section { display: flex; align-items: center; gap: 1rem; }
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.vote-count { font-size: 0.9rem; color: #475569; }
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.vote-btn { padding: 0.4rem 0.8rem; background: #10b981; }
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.vote-btn:hover { background: #059669; }
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.vote-btn:disabled,
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.vote-btn[disabled] { background: #888888; }
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.vote-btn:disabled:hover,
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.vote-btn[disabled]:hover { background: #AAAAAA; }
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|
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</style>
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<template>
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<div>
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<h2 class="poll-title">Poll: {{ activePollId }}</h2>
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<p v-if="Object.keys(pollData).length==0">Note: Add at least one Option to save the Poll.</p>
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<form @submit.prevent="handleAddNewOption" class="add-option-form" v-if="userid">
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<input v-model="newOption" placeholder="Enter a new poll option..." required />
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<button type="submit">Add Option</button>
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</form>
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<ul class="poll-list">
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<li v-for="(votes, optionName) in pollData" :key="optionName" class="poll-item">
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<span class="option-name">{{ optionName }}</span>
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<div class="vote-section">
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|
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<span class="vote-count">{{ votes.length }} {{ votes.length === 1 ? 'vote' : 'votes' }}</span>
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<button @click="vote(String(optionName))" class="vote-btn" :disabled="userid==undefined || voted(votes)">+1</button>
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</div>
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</li>
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</ul>
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|
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</div>
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|
||||||
</template>
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|
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|
||||||
<script setup lang="ts">
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||||||
import type { PollProps, SignedData, VoteData } from '@/utils/types'
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|
||||||
const props = defineProps<PollProps>()
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|
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|
||||||
const newOption = ref('');
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|
||||||
const handleAddNewOption = () => {
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|
||||||
props.addOption(newOption.value);
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|
||||||
newOption.value = '';
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|
||||||
};
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|
||||||
|
|
||||||
|
|
||||||
const voted = (votes: SignedData<VoteData>[]) => {
|
|
||||||
for(let vote of votes){
|
|
||||||
if(vote.data.userid == props.userid){
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|
||||||
return true;
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|
||||||
}
|
|
||||||
}
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|
||||||
return false;
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|
||||||
}
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|
||||||
</script>
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|
||||||
@@ -1,64 +0,0 @@
|
|||||||
<style scoped>
|
|
||||||
.poll-list { margin-top: 1rem; }
|
|
||||||
.empty-state { text-align: center; color: #94a3b8; font-style: italic; }
|
|
||||||
.create-poll { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
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|
||||||
.poll-links { list-style: none; padding: 0; }
|
|
||||||
.poll-link-btn {
|
|
||||||
width: 100%;
|
|
||||||
text-align: left;
|
|
||||||
background: #f1f5f9;
|
|
||||||
color: #1e293b;
|
|
||||||
margin-bottom: 0.5rem;
|
|
||||||
display: flex;
|
|
||||||
justify-content: space-between;
|
|
||||||
}
|
|
||||||
.poll-link-btn:hover { background: #e2e8f0; }
|
|
||||||
</style>
|
|
||||||
|
|
||||||
<template>
|
|
||||||
<div class="poll-list">
|
|
||||||
<h3>Available Polls</h3>
|
|
||||||
|
|
||||||
<ul v-if="polls && polls.length > 0" class="poll-links">
|
|
||||||
<li v-for="id in polls" :key="id">
|
|
||||||
<button class="poll-link-btn" @click="$emit('select-poll', id)">
|
|
||||||
{{ id }} <span>→</span>
|
|
||||||
</button>
|
|
||||||
</li>
|
|
||||||
</ul>
|
|
||||||
<p v-else class="empty-state">No polls found. Create the first one!</p>
|
|
||||||
<div class="create-poll" v-if="userid !== undefined">
|
|
||||||
<input
|
|
||||||
v-model="newPollId"
|
|
||||||
placeholder="Enter new poll name..."
|
|
||||||
@keyup.enter="createPoll"
|
|
||||||
/>
|
|
||||||
<button @click="createPoll">Create & Join</button>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
</template>
|
|
||||||
|
|
||||||
<script setup lang="ts">
|
|
||||||
import type { PollListProps } from '@/utils/types'
|
|
||||||
const props = defineProps<PollListProps>()
|
|
||||||
const newPollId = ref('');
|
|
||||||
const polls = ref<string[]>([]);
|
|
||||||
|
|
||||||
// Fetch existing polls on mount
|
|
||||||
const fetchPolls = async () => {
|
|
||||||
const data = await $fetch<{ polls: string[] }>('/api/polls');
|
|
||||||
polls.value = data.polls;
|
|
||||||
};
|
|
||||||
|
|
||||||
const createPoll = () => {
|
|
||||||
const id = newPollId.value.trim().toLowerCase().replace(/\s+/g, '-');
|
|
||||||
if (id) {
|
|
||||||
// In a real app, you might want to POST to create it first,
|
|
||||||
// but here we just navigate to it and let usePoll handle the save.
|
|
||||||
emit('select-poll', id);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
const emit = defineEmits(['select-poll']);
|
|
||||||
onMounted(fetchPolls);
|
|
||||||
</script>
|
|
||||||
@@ -1,131 +0,0 @@
|
|||||||
// composables/usePoll.ts
|
|
||||||
import { ref, watch, onUnmounted } from 'vue';
|
|
||||||
import * as Y from 'yjs';
|
|
||||||
|
|
||||||
export const usePoll = (pollId: Ref<string | null>, user: Ref<UserData | null>) => {
|
|
||||||
const pollData = ref<PollData>({});
|
|
||||||
const isConnected = ref(false);
|
|
||||||
const connectionAttempFailed = ref(false);
|
|
||||||
const connectedPeers = ref(1);
|
|
||||||
|
|
||||||
let ydoc: Y.Doc | null = null;
|
|
||||||
let provider: any = null;
|
|
||||||
let yMap: Y.Map<SignedData<VoteData>[]> | null = null;
|
|
||||||
|
|
||||||
const cleanup = () => {
|
|
||||||
if (provider) provider.disconnect();
|
|
||||||
if (ydoc) ydoc.destroy();
|
|
||||||
isConnected.value = false;
|
|
||||||
pollData.value = {};
|
|
||||||
};
|
|
||||||
|
|
||||||
const initPoll = async (id: string) => {
|
|
||||||
cleanup(); // Clear previous session
|
|
||||||
|
|
||||||
ydoc = new Y.Doc();
|
|
||||||
|
|
||||||
// 1. Fetch Snapshot from Nuxt API
|
|
||||||
try {
|
|
||||||
const response = await $fetch<{ update: number[] | null }>(`/api/polls/${id}`).catch((e) => {
|
|
||||||
console.error("Failed to get poll: " + id,e)
|
|
||||||
});
|
|
||||||
//trust the server without verification.
|
|
||||||
if (response?.update) {
|
|
||||||
Y.applyUpdate(ydoc, new Uint8Array(response.update));
|
|
||||||
}
|
|
||||||
} catch (err) {
|
|
||||||
console.error('Persistence fetch failed', err);
|
|
||||||
}
|
|
||||||
|
|
||||||
yMap = ydoc.getMap<SignedData<VoteData>[]>('shared-poll');
|
|
||||||
|
|
||||||
// 2. Local State Sync
|
|
||||||
yMap.observe(async () => {
|
|
||||||
await performUpdateAndVerify();
|
|
||||||
saveStateToServer(id);
|
|
||||||
});
|
|
||||||
await performUpdateAndVerify();
|
|
||||||
|
|
||||||
// 3. P2P Connection
|
|
||||||
const { WebrtcProvider } = await import('y-webrtc');
|
|
||||||
provider = new WebrtcProvider(`nuxt-p2p-${id}`, ydoc, {
|
|
||||||
signaling: ["ws://localhost:4444", "ws://lynxpi.ddns.net:4444"]
|
|
||||||
});
|
|
||||||
|
|
||||||
provider.on('synced', (arg: {synced: boolean}) => {
|
|
||||||
isConnected.value = arg.synced;
|
|
||||||
console.log('Connection synced:', arg.synced) // "connected" or "disconnected"
|
|
||||||
});
|
|
||||||
provider.on('status', (event: { connected: boolean }) => {
|
|
||||||
console.log('Connection status:', event.connected) // "connected" or "disconnected"
|
|
||||||
})
|
|
||||||
provider.on('peers', (data: any) => {
|
|
||||||
connectedPeers.value = data.webrtcPeers.length + 1
|
|
||||||
});
|
|
||||||
};
|
|
||||||
|
|
||||||
const saveStateToServer = async (id: string) => {
|
|
||||||
if (!ydoc) return;
|
|
||||||
const stateUpdate = Y.encodeStateAsUpdate(ydoc);
|
|
||||||
await $fetch(`/api/polls/${id}`, {
|
|
||||||
method: 'POST',
|
|
||||||
body: { update: Array.from(stateUpdate) }
|
|
||||||
}).catch((e) => {
|
|
||||||
console.error("Failed to update poll",e)
|
|
||||||
});
|
|
||||||
};
|
|
||||||
|
|
||||||
// Watch for ID changes (e.g., user clicks a link or goes back)
|
|
||||||
watch(pollId, (newId) => {
|
|
||||||
if (newId && import.meta.client) {
|
|
||||||
initPoll(newId);
|
|
||||||
} else {
|
|
||||||
cleanup();
|
|
||||||
}
|
|
||||||
}, { immediate: true });
|
|
||||||
|
|
||||||
onUnmounted(cleanup);
|
|
||||||
|
|
||||||
const addOption = (optionName: string) => {
|
|
||||||
if (yMap && !yMap.has(optionName)) yMap.set(optionName, []);
|
|
||||||
};
|
|
||||||
|
|
||||||
const performUpdateAndVerify = async () => {
|
|
||||||
const pollDataUpdate = yMap!.toJSON();
|
|
||||||
console.log("Poll Data Update: ", pollDataUpdate)
|
|
||||||
for(var option in pollDataUpdate){
|
|
||||||
console.log("verifying votes for option: " + option);
|
|
||||||
const votes = pollDataUpdate[option] || [];
|
|
||||||
const verified = await verifyAllVotesForOption(votes);
|
|
||||||
if(!verified){
|
|
||||||
console.error("Failed to verify option: "+option)
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
console.log("All options verified! :)")
|
|
||||||
pollData.value = pollDataUpdate
|
|
||||||
}
|
|
||||||
|
|
||||||
const vote = async (optionName: string) => {
|
|
||||||
const currentUser = user.value;
|
|
||||||
if (currentUser != undefined && yMap?.has(optionName)) {
|
|
||||||
const voteData = [...(yMap.get(optionName) || [])];
|
|
||||||
if(voteData != undefined && currentUser.private_key){
|
|
||||||
var unsignedVoteData : VoteData = {
|
|
||||||
userid: currentUser.userid,
|
|
||||||
timestamp: new Date().toISOString()
|
|
||||||
}
|
|
||||||
var newVote : SignedData<VoteData> = {
|
|
||||||
data: unsignedVoteData,
|
|
||||||
signature: "",
|
|
||||||
}
|
|
||||||
voteData?.push(newVote)
|
|
||||||
const signature = await signVote(voteData,currentUser.private_key);
|
|
||||||
newVote.signature=signature
|
|
||||||
yMap?.set(optionName, voteData);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
return { pollData, isConnected, connectionAttempFailed, connectedPeers, addOption, vote };
|
|
||||||
};
|
|
||||||
@@ -1,2 +0,0 @@
|
|||||||
export const user = (user: Ref<UserData | null>) => {
|
|
||||||
}
|
|
||||||
@@ -1,187 +0,0 @@
|
|||||||
// utils/crypto.ts
|
|
||||||
export const generateUserKeyPair = async () => {
|
|
||||||
return await window.crypto.subtle.generateKey(
|
|
||||||
{
|
|
||||||
name: "RSASSA-PKCS1-v1_5",
|
|
||||||
modulusLength: 2048,
|
|
||||||
publicExponent: new Uint8Array([1, 0, 1]), // 65537
|
|
||||||
hash: "SHA-256",
|
|
||||||
},
|
|
||||||
true, // extractable
|
|
||||||
["sign", "verify"]
|
|
||||||
);
|
|
||||||
};
|
|
||||||
|
|
||||||
export const signVote = async (data: any, privateKey: CryptoKey) => {
|
|
||||||
const encoder = new TextEncoder();
|
|
||||||
const encodedData = encoder.encode(JSON.stringify(data));
|
|
||||||
|
|
||||||
const signature = await window.crypto.subtle.sign(
|
|
||||||
"RSASSA-PKCS1-v1_5",
|
|
||||||
privateKey,
|
|
||||||
encodedData
|
|
||||||
);
|
|
||||||
|
|
||||||
// Convert to Base64 or Hex to store in Yjs easily
|
|
||||||
return btoa(String.fromCharCode(...new Uint8Array(signature)));
|
|
||||||
};
|
|
||||||
|
|
||||||
export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
|
|
||||||
const encoder = new TextEncoder();
|
|
||||||
const encodedData = encoder.encode(JSON.stringify(data));
|
|
||||||
|
|
||||||
// Convert Base64 back to Uint8Array
|
|
||||||
const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
|
|
||||||
|
|
||||||
return await window.crypto.subtle.verify(
|
|
||||||
"RSASSA-PKCS1-v1_5",
|
|
||||||
publicKey,
|
|
||||||
signature,
|
|
||||||
encodedData
|
|
||||||
);
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Verifies a specific vote within an array of votes by
|
|
||||||
* reconstructing the "signed state" at that point in time.
|
|
||||||
*/
|
|
||||||
export const verifyChainedVote = async (
|
|
||||||
voteData: SignedData<VoteData>[],
|
|
||||||
index: number
|
|
||||||
) => {
|
|
||||||
const voteToVerify = voteData[index];
|
|
||||||
console.log("Verifying vote: " + voteToVerify)
|
|
||||||
if(voteToVerify) {
|
|
||||||
// 1. Reconstruct the exact data state the user signed
|
|
||||||
// We need the array exactly as it was when they pushed their vote
|
|
||||||
const historicalState = voteData.slice(0, index + 1).map((v, i) => {
|
|
||||||
if (i === index) {
|
|
||||||
// For the current vote, the signature must be empty string
|
|
||||||
// because it wasn't signed yet when passed to signVote
|
|
||||||
return { ...v, signature: "" };
|
|
||||||
}
|
|
||||||
return v;
|
|
||||||
});
|
|
||||||
|
|
||||||
try {
|
|
||||||
// 2. Fetch public key
|
|
||||||
const response = await $fetch<{ public_key: string }>(`/api/users/${voteToVerify.data.userid}`);
|
|
||||||
console.log("Got key: ",response)
|
|
||||||
const pubKey = await stringToCryptoKey(response.public_key, 'public');
|
|
||||||
|
|
||||||
console.log("Using pubKey to verify Vote.")
|
|
||||||
// 3. Verify: Does this historicalState match the signature?
|
|
||||||
return await verifyVote(historicalState, voteToVerify.signature, pubKey);
|
|
||||||
} catch (err) {
|
|
||||||
console.error("Verification failed")
|
|
||||||
console.error(err);
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
console.error("Vote is undefined or null");
|
|
||||||
return false;
|
|
||||||
};
|
|
||||||
|
|
||||||
export const verifyAllVotesForOption = async (votes: SignedData<VoteData>[]) => {
|
|
||||||
console.log("verifying votes for option ",votes);
|
|
||||||
for (let i = votes.length-1; i >= 0 ; i--) {
|
|
||||||
const isValid = await verifyChainedVote(votes, i);
|
|
||||||
if(!isValid){
|
|
||||||
console.error("Error! Invalid Vote at: " + i,votes)
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return true;
|
|
||||||
};
|
|
||||||
|
|
||||||
// Helper to convert ArrayBuffer to Base64 string
|
|
||||||
const bufferToBase64 = (buf: ArrayBuffer) =>
|
|
||||||
window.btoa(String.fromCharCode(...new Uint8Array(buf)));
|
|
||||||
|
|
||||||
export const exportPublicKey = async (key: CryptoKey) => {
|
|
||||||
// Export Public Key
|
|
||||||
const exportedPublic = await window.crypto.subtle.exportKey("spki", key);
|
|
||||||
const publicKeyString = bufferToBase64(exportedPublic);
|
|
||||||
|
|
||||||
return publicKeyString;
|
|
||||||
};
|
|
||||||
export const exportPrivateKey = async (key: CryptoKey) => {
|
|
||||||
// Export Private Key
|
|
||||||
const exportedPrivate = await window.crypto.subtle.exportKey("pkcs8", key);
|
|
||||||
const privateKeyString = bufferToBase64(exportedPrivate);
|
|
||||||
|
|
||||||
return privateKeyString;
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Converts a Base64 string back into a usable CryptoKey object
|
|
||||||
* @param keyStr The Base64 string (without PEM headers)
|
|
||||||
* @param type 'public' or 'private'
|
|
||||||
*/
|
|
||||||
export const stringToCryptoKey = async (keyStr: string, type: 'public' | 'private'): Promise<CryptoKey> => {
|
|
||||||
// 1. Convert Base64 string to a Uint8Array (binary)
|
|
||||||
const binaryString = window.atob(keyStr);
|
|
||||||
const bytes = new Uint8Array(binaryString.length);
|
|
||||||
for (let i = 0; i < binaryString.length; i++) {
|
|
||||||
bytes[i] = binaryString.charCodeAt(i);
|
|
||||||
}
|
|
||||||
|
|
||||||
// 2. Identify the format based on the key type
|
|
||||||
// Public keys usually use 'spki', Private keys use 'pkcs8'
|
|
||||||
const format = type === 'public' ? 'spki' : 'pkcs8';
|
|
||||||
const usages: KeyUsage[] = type === 'public' ? ['verify'] : ['sign'];
|
|
||||||
|
|
||||||
// 3. Import the key
|
|
||||||
return await window.crypto.subtle.importKey(
|
|
||||||
format,
|
|
||||||
bytes.buffer,
|
|
||||||
{
|
|
||||||
name: "RSASSA-PKCS1-v1_5",
|
|
||||||
hash: "SHA-256",
|
|
||||||
},
|
|
||||||
true, // extractable (set to false if you want to lock it in memory)
|
|
||||||
usages
|
|
||||||
);
|
|
||||||
};
|
|
||||||
|
|
||||||
export const savePrivateKeyToFile = (privateKeyStr: string, filename: string) => {
|
|
||||||
// Optional: Wrap in PEM headers for standard formatting
|
|
||||||
const pemHeader = "-----BEGIN PRIVATE KEY-----\n";
|
|
||||||
const pemFooter = "\n-----END PRIVATE KEY-----";
|
|
||||||
const fileContent = pemHeader + privateKeyStr + pemFooter;
|
|
||||||
|
|
||||||
const blob = new Blob([fileContent], { type: "text/plain" });
|
|
||||||
const url = URL.createObjectURL(blob);
|
|
||||||
|
|
||||||
const link = document.createElement("a");
|
|
||||||
link.href = url;
|
|
||||||
link.download = filename;
|
|
||||||
|
|
||||||
document.body.appendChild(link);
|
|
||||||
link.click();
|
|
||||||
|
|
||||||
// Cleanup
|
|
||||||
document.body.removeChild(link);
|
|
||||||
URL.revokeObjectURL(url);
|
|
||||||
};
|
|
||||||
|
|
||||||
export const loadPrivateKeyFromFile = async (file: File): Promise<string> => {
|
|
||||||
return new Promise((resolve, reject) => {
|
|
||||||
const reader = new FileReader();
|
|
||||||
|
|
||||||
reader.onload = (e) => {
|
|
||||||
const content = e.target?.result as string;
|
|
||||||
|
|
||||||
// Clean up the string by removing PEM headers and newlines
|
|
||||||
const cleanKey = content
|
|
||||||
.replace("-----BEGIN PRIVATE KEY-----", "")
|
|
||||||
.replace("-----END PRIVATE KEY-----", "")
|
|
||||||
.replace(/\s+/g, ""); // Removes all whitespace/newlines
|
|
||||||
|
|
||||||
resolve(cleanKey);
|
|
||||||
};
|
|
||||||
|
|
||||||
reader.onerror = () => reject("Error reading file");
|
|
||||||
reader.readAsText(file);
|
|
||||||
});
|
|
||||||
};
|
|
||||||
@@ -1,36 +0,0 @@
|
|||||||
export interface PollProps {
|
|
||||||
userid: string | undefined,
|
|
||||||
activePollId: string,
|
|
||||||
pollData: PollData,
|
|
||||||
addOption: (name: string) => void,
|
|
||||||
vote: (optionName: string) => void
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface PollListProps {
|
|
||||||
userid: string | undefined,
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface PollData extends Record<string, SignedData<VoteData>[]> {
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface SignedData<T> {
|
|
||||||
data: T,
|
|
||||||
signature: string
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface VoteData {
|
|
||||||
userid: string,
|
|
||||||
timestamp: string
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface OptionData {
|
|
||||||
userid: string,
|
|
||||||
timestamp: string,
|
|
||||||
optionName: string
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface UserData {
|
|
||||||
userid: string,
|
|
||||||
private_key: CryptoKey | undefined,
|
|
||||||
public_key: CryptoKey | undefined
|
|
||||||
}
|
|
||||||
0
.gitignore → p2p-poll/.gitignore
vendored
0
.gitignore → p2p-poll/.gitignore
vendored
75
p2p-poll/README.md
Normal file
75
p2p-poll/README.md
Normal file
@@ -0,0 +1,75 @@
|
|||||||
|
# Nuxt Minimal Starter
|
||||||
|
|
||||||
|
Look at the [Nuxt documentation](https://nuxt.com/docs/getting-started/introduction) to learn more.
|
||||||
|
|
||||||
|
## Setup
|
||||||
|
|
||||||
|
Make sure to install dependencies:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
# npm
|
||||||
|
npm install
|
||||||
|
|
||||||
|
# pnpm
|
||||||
|
pnpm install
|
||||||
|
|
||||||
|
# yarn
|
||||||
|
yarn install
|
||||||
|
|
||||||
|
# bun
|
||||||
|
bun install
|
||||||
|
```
|
||||||
|
|
||||||
|
## Development Server
|
||||||
|
|
||||||
|
Start the development server on `http://localhost:3000`:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
# npm
|
||||||
|
npm run dev
|
||||||
|
|
||||||
|
# pnpm
|
||||||
|
pnpm dev
|
||||||
|
|
||||||
|
# yarn
|
||||||
|
yarn dev
|
||||||
|
|
||||||
|
# bun
|
||||||
|
bun run dev
|
||||||
|
```
|
||||||
|
|
||||||
|
## Production
|
||||||
|
|
||||||
|
Build the application for production:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
# npm
|
||||||
|
npm run build
|
||||||
|
|
||||||
|
# pnpm
|
||||||
|
pnpm build
|
||||||
|
|
||||||
|
# yarn
|
||||||
|
yarn build
|
||||||
|
|
||||||
|
# bun
|
||||||
|
bun run build
|
||||||
|
```
|
||||||
|
|
||||||
|
Locally preview production build:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
# npm
|
||||||
|
npm run preview
|
||||||
|
|
||||||
|
# pnpm
|
||||||
|
pnpm preview
|
||||||
|
|
||||||
|
# yarn
|
||||||
|
yarn preview
|
||||||
|
|
||||||
|
# bun
|
||||||
|
bun run preview
|
||||||
|
```
|
||||||
|
|
||||||
|
Check out the [deployment documentation](https://nuxt.com/docs/getting-started/deployment) for more information.
|
||||||
152
p2p-poll/app/app.vue
Normal file
152
p2p-poll/app/app.vue
Normal file
@@ -0,0 +1,152 @@
|
|||||||
|
|
||||||
|
|
||||||
|
<style>
|
||||||
|
/* Basic styling to make it look clean */
|
||||||
|
body {
|
||||||
|
font-family: system-ui, -apple-system, sans-serif;
|
||||||
|
background-color: #f4f4f9;
|
||||||
|
color: #333;
|
||||||
|
margin: 0;
|
||||||
|
display: flex;
|
||||||
|
justify-content: center;
|
||||||
|
padding: 2rem;
|
||||||
|
}
|
||||||
|
|
||||||
|
.poll-container {
|
||||||
|
background: white;
|
||||||
|
padding: 2rem;
|
||||||
|
border-radius: 12px;
|
||||||
|
box-shadow: 0 4px 6px rgba(0,0,0,0.1);
|
||||||
|
width: 100%;
|
||||||
|
max-width: 500px;
|
||||||
|
}
|
||||||
|
|
||||||
|
header {
|
||||||
|
margin-bottom: 2rem;
|
||||||
|
text-align: center;
|
||||||
|
}
|
||||||
|
|
||||||
|
h1 { margin: 0 0 0.5rem 0; }
|
||||||
|
|
||||||
|
.status {
|
||||||
|
font-size: 0.85rem;
|
||||||
|
color: #666;
|
||||||
|
}
|
||||||
|
.status .connected { color: #10b981; font-weight: bold; }
|
||||||
|
|
||||||
|
.add-option-form {
|
||||||
|
display: flex;
|
||||||
|
gap: 0.5rem;
|
||||||
|
margin-bottom: 2rem;
|
||||||
|
}
|
||||||
|
|
||||||
|
input {
|
||||||
|
flex-grow: 1;
|
||||||
|
padding: 0.75rem;
|
||||||
|
border: 1px solid #ccc;
|
||||||
|
border-radius: 6px;
|
||||||
|
font-size: 1rem;
|
||||||
|
}
|
||||||
|
|
||||||
|
button {
|
||||||
|
background: #3b82f6;
|
||||||
|
color: white;
|
||||||
|
border: none;
|
||||||
|
padding: 0.75rem 1rem;
|
||||||
|
border-radius: 6px;
|
||||||
|
cursor: pointer;
|
||||||
|
font-weight: bold;
|
||||||
|
transition: background 0.2s;
|
||||||
|
}
|
||||||
|
|
||||||
|
button:hover { background: #2563eb; }
|
||||||
|
|
||||||
|
.poll-list {
|
||||||
|
list-style: none;
|
||||||
|
padding: 0;
|
||||||
|
margin: 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
.poll-item {
|
||||||
|
display: flex;
|
||||||
|
justify-content: space-between;
|
||||||
|
align-items: center;
|
||||||
|
padding: 1rem;
|
||||||
|
background: #f8fafc;
|
||||||
|
border: 1px solid #e2e8f0;
|
||||||
|
border-radius: 8px;
|
||||||
|
margin-bottom: 0.5rem;
|
||||||
|
}
|
||||||
|
|
||||||
|
.option-name { font-weight: 500; }
|
||||||
|
.vote-section { display: flex; align-items: center; gap: 1rem; }
|
||||||
|
.vote-count { font-size: 0.9rem; color: #475569; }
|
||||||
|
.vote-btn { padding: 0.4rem 0.8rem; background: #10b981; }
|
||||||
|
.vote-btn:hover { background: #059669; }
|
||||||
|
.empty-state { text-align: center; color: #94a3b8; font-style: italic; }
|
||||||
|
</style>
|
||||||
|
<template>
|
||||||
|
<div class="poll-container">
|
||||||
|
<ClientOnly>
|
||||||
|
<header>
|
||||||
|
<h1>P2P Polling App 🗳️</h1>
|
||||||
|
<div class="status">
|
||||||
|
<span :class="{ 'connected': isConnected }">
|
||||||
|
● {{ isConnected ? 'Synced' : 'Connecting...' }}
|
||||||
|
</span>
|
||||||
|
<span> | Peers online: {{ connectedPeers }}</span>
|
||||||
|
</div>
|
||||||
|
</header>
|
||||||
|
|
||||||
|
<main>
|
||||||
|
<form @submit.prevent="handleAddNewOption" class="add-option-form">
|
||||||
|
<input
|
||||||
|
v-model="newOption"
|
||||||
|
type="text"
|
||||||
|
placeholder="Enter a new poll option..."
|
||||||
|
required
|
||||||
|
/>
|
||||||
|
<button type="submit">Add Option</button>
|
||||||
|
</form>
|
||||||
|
|
||||||
|
<div v-if="Object.keys(pollData).length === 0" class="empty-state">
|
||||||
|
No options yet. Be the first to add one!
|
||||||
|
</div>
|
||||||
|
|
||||||
|
<ul v-else class="poll-list">
|
||||||
|
<li v-for="(votes, optionName) in pollData" :key="optionName" class="poll-item">
|
||||||
|
<span class="option-name">{{ optionName }}</span>
|
||||||
|
<div class="vote-section">
|
||||||
|
<span class="vote-count">{{ votes }} {{ votes === 1 ? 'vote' : 'votes' }}</span>
|
||||||
|
<button @click="vote(String(optionName))" class="vote-btn">+1</button>
|
||||||
|
</div>
|
||||||
|
</li>
|
||||||
|
</ul>
|
||||||
|
</main>
|
||||||
|
<template #fallback>
|
||||||
|
<div class="empty-state">Loading P2P Node...</div>
|
||||||
|
</template>
|
||||||
|
</ClientOnly>
|
||||||
|
</div>
|
||||||
|
</template>
|
||||||
|
|
||||||
|
<script setup lang="ts">
|
||||||
|
import { ref } from 'vue';
|
||||||
|
// Manually define 'global' for the browser
|
||||||
|
if (process.client) {
|
||||||
|
(window as any).global = window;
|
||||||
|
}
|
||||||
|
import { usePoll } from '../composables/usePoll';
|
||||||
|
|
||||||
|
// Because WebRTC requires the browser environment (window/navigator),
|
||||||
|
// we ensure our composable only runs on the client side in Nuxt.
|
||||||
|
const newOption = ref('');
|
||||||
|
|
||||||
|
// Destructure our P2P logic
|
||||||
|
const { pollData, isConnected, connectedPeers, addOption, vote } = usePoll();
|
||||||
|
|
||||||
|
const handleAddNewOption = () => {
|
||||||
|
addOption(newOption.value);
|
||||||
|
newOption.value = ''; // Reset input
|
||||||
|
};
|
||||||
|
</script>
|
||||||
81
p2p-poll/composables/usePoll.ts
Normal file
81
p2p-poll/composables/usePoll.ts
Normal file
@@ -0,0 +1,81 @@
|
|||||||
|
// composables/usePoll.ts
|
||||||
|
import { ref, onMounted, onUnmounted } from 'vue';
|
||||||
|
import * as Y from 'yjs';
|
||||||
|
|
||||||
|
export const usePoll = () => {
|
||||||
|
// Reactive Vue state to drive the UI
|
||||||
|
const pollData = ref<Record<string, number>>({});
|
||||||
|
const isConnected = ref(false);
|
||||||
|
const connectedPeers = ref(1); // 1 = just you initially
|
||||||
|
|
||||||
|
let ydoc: Y.Doc;
|
||||||
|
let provider: any;
|
||||||
|
let yMap: Y.Map<number>;
|
||||||
|
|
||||||
|
onMounted(async () => {
|
||||||
|
// 1. Initialize the Yjs document
|
||||||
|
ydoc = new Y.Doc();
|
||||||
|
|
||||||
|
// 2. Connect via WebRTC.
|
||||||
|
// 'nuxt-p2p-poll-demo-room' is the shared room name.
|
||||||
|
// Anyone using this exact string will sync together.
|
||||||
|
const { WebrtcProvider } = await import('y-webrtc');
|
||||||
|
provider = new WebrtcProvider('nuxt-p2p-poll-demo-room', ydoc);
|
||||||
|
|
||||||
|
// Track connection status
|
||||||
|
provider.on('synced', (arg: {synced: boolean}) => {
|
||||||
|
isConnected.value = arg.synced;
|
||||||
|
});
|
||||||
|
|
||||||
|
provider.on('peers', (data: any) => {
|
||||||
|
// data.webrtcPeers contains the connected peer IDs
|
||||||
|
connectedPeers.value = data.webrtcPeers.length + 1; // +1 for self
|
||||||
|
});
|
||||||
|
|
||||||
|
// 3. Define our shared state structure. We'll use a Map
|
||||||
|
// where the Key is the Poll Option (string) and Value is the Vote Count (number)
|
||||||
|
yMap = ydoc.getMap<number>('shared-poll');
|
||||||
|
|
||||||
|
// 4. Listen for changes from other peers and update our Vue reactive state
|
||||||
|
yMap.observe(() => {
|
||||||
|
pollData.value = yMap.toJSON();
|
||||||
|
});
|
||||||
|
|
||||||
|
// Initial load in case data already exists in the room
|
||||||
|
pollData.value = yMap.toJSON();
|
||||||
|
});
|
||||||
|
|
||||||
|
onUnmounted(() => {
|
||||||
|
// Clean up when the component is destroyed
|
||||||
|
if (provider) {
|
||||||
|
provider.disconnect();
|
||||||
|
}
|
||||||
|
if (ydoc) {
|
||||||
|
ydoc.destroy();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
// Action: Add a new option to the poll
|
||||||
|
const addOption = (optionName: string) => {
|
||||||
|
const trimmedName = optionName.trim();
|
||||||
|
if (trimmedName && !yMap.has(trimmedName)) {
|
||||||
|
yMap.set(trimmedName, 0); // Initialize with 0 votes
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
// Action: Vote for an existing option
|
||||||
|
const vote = (optionName: string) => {
|
||||||
|
if (yMap.has(optionName)) {
|
||||||
|
const currentVotes = yMap.get(optionName) || 0;
|
||||||
|
yMap.set(optionName, currentVotes + 1);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
return {
|
||||||
|
pollData,
|
||||||
|
isConnected,
|
||||||
|
connectedPeers,
|
||||||
|
addOption,
|
||||||
|
vote
|
||||||
|
};
|
||||||
|
};
|
||||||
@@ -2,22 +2,10 @@
|
|||||||
export default defineNuxtConfig({
|
export default defineNuxtConfig({
|
||||||
compatibilityDate: '2025-07-15',
|
compatibilityDate: '2025-07-15',
|
||||||
devtools: { enabled: true },
|
devtools: { enabled: true },
|
||||||
|
ssr: false,
|
||||||
vite: {
|
vite: {
|
||||||
optimizeDeps: {
|
optimizeDeps: {
|
||||||
include: ['yjs', 'y-webrtc']
|
include: ['yjs', 'y-webrtc']
|
||||||
}
|
}
|
||||||
},
|
|
||||||
// ... existing config
|
|
||||||
nitro: {
|
|
||||||
storage: {
|
|
||||||
polls: {
|
|
||||||
driver: 'fs',
|
|
||||||
base: './.data/polls'
|
|
||||||
},
|
|
||||||
users: {
|
|
||||||
driver: 'fs',
|
|
||||||
base: './.data/users'
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
})
|
})
|
||||||
1484
package-lock.json → p2p-poll/package-lock.json
generated
1484
package-lock.json → p2p-poll/package-lock.json
generated
File diff suppressed because it is too large
Load Diff
@@ -4,14 +4,13 @@
|
|||||||
"private": true,
|
"private": true,
|
||||||
"scripts": {
|
"scripts": {
|
||||||
"build": "nuxt build",
|
"build": "nuxt build",
|
||||||
"dev": "PORT=4444 npx y-webrtc & nuxt dev",
|
"dev": "nuxt dev",
|
||||||
"generate": "nuxt generate",
|
"generate": "nuxt generate",
|
||||||
"preview": "nuxt preview",
|
"preview": "nuxt preview",
|
||||||
"postinstall": "nuxt prepare"
|
"postinstall": "nuxt prepare"
|
||||||
},
|
},
|
||||||
"dependencies": {
|
"dependencies": {
|
||||||
"nuxt": "^4.1.3",
|
"nuxt": "^4.1.3",
|
||||||
"uuid": "^13.0.0",
|
|
||||||
"vue": "^3.5.30",
|
"vue": "^3.5.30",
|
||||||
"vue-router": "^5.0.3",
|
"vue-router": "^5.0.3",
|
||||||
"y-webrtc": "^10.3.0",
|
"y-webrtc": "^10.3.0",
|
||||||
|
Before Width: | Height: | Size: 4.2 KiB After Width: | Height: | Size: 4.2 KiB |
@@ -1,68 +0,0 @@
|
|||||||
import * as Y from 'yjs';
|
|
||||||
// server/api/polls/[id].ts
|
|
||||||
export default defineEventHandler(async (event) => {
|
|
||||||
const method = event.node.req.method;
|
|
||||||
const pollId = getRouterParam(event, 'id');
|
|
||||||
|
|
||||||
// We use Nitro's built-in storage.
|
|
||||||
// 'polls' is the storage namespace.
|
|
||||||
const storage = useStorage('polls');
|
|
||||||
|
|
||||||
if (!pollId) {
|
|
||||||
throw createError({ statusCode: 400, statusMessage: 'Poll ID required' });
|
|
||||||
}
|
|
||||||
|
|
||||||
// GET: Fetch the saved Yjs document state
|
|
||||||
if (method === 'GET') {
|
|
||||||
const data = await storage.getItem(`poll:${pollId}`);
|
|
||||||
// Return the array of numbers (or null if it doesn't exist yet)
|
|
||||||
return { update: data || null };
|
|
||||||
}
|
|
||||||
|
|
||||||
// POST: Save a new Yjs document state
|
|
||||||
if (method === 'POST') {
|
|
||||||
const body = await readBody(event);
|
|
||||||
|
|
||||||
if (body.update && Array.isArray(body.update)) {
|
|
||||||
// create a temp Y.Doc to encode the Data
|
|
||||||
const tempDoc = new Y.Doc();
|
|
||||||
Y.applyUpdate(tempDoc, new Uint8Array(body.update));
|
|
||||||
const yMap = tempDoc.getMap('shared-poll');
|
|
||||||
const pollData = yMap.toJSON();
|
|
||||||
|
|
||||||
// verify pollData
|
|
||||||
for(var option in pollData){
|
|
||||||
const votes = pollData[option] || [];
|
|
||||||
var pubKeys: CryptoKey[] = [];
|
|
||||||
|
|
||||||
const verifyAllVotesForOption = async (votes: SignedData<VoteData>[]) => {
|
|
||||||
console.log("verifying votes for option " + option,votes);
|
|
||||||
// check last votes first. if there is something wrong, its likely in the last vote.
|
|
||||||
for (let i = votes.length-1; i >= 0 ; i--) {
|
|
||||||
const userStorage = useStorage('users');
|
|
||||||
const votePubKeyString = await userStorage.getItem(`user:${votes[i]?.data.userid}`);
|
|
||||||
//console.log("Using public key: "+votePubKeyString)
|
|
||||||
const votePubKey = await stringToCryptoKey(String(votePubKeyString),'public')
|
|
||||||
const isValid = await verifyChainedVote(votes, i,votePubKey);
|
|
||||||
if(!isValid){
|
|
||||||
console.error("Error! Invalid Vote at: " + i,votes)
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return true;
|
|
||||||
};
|
|
||||||
const verified = await verifyAllVotesForOption(votes);
|
|
||||||
if(!verified){
|
|
||||||
console.error("Failed to verify option: "+option)
|
|
||||||
throw createError({ statusCode: 400, statusMessage: 'PollData contains unverifyable content!' });
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Save the binary update (sent as an array of numbers) to storage
|
|
||||||
await storage.setItem(`poll:${pollId}`, body.update);
|
|
||||||
return { success: true };
|
|
||||||
}
|
|
||||||
|
|
||||||
throw createError({ statusCode: 400, statusMessage: 'Invalid update payload' });
|
|
||||||
}
|
|
||||||
});
|
|
||||||
@@ -1,15 +0,0 @@
|
|||||||
// server/api/polls/index.get.ts
|
|
||||||
export default defineEventHandler(async () => {
|
|
||||||
const storage = useStorage('polls');
|
|
||||||
|
|
||||||
// Get all keys in the 'polls' namespace
|
|
||||||
const allKeys = await storage.getKeys();
|
|
||||||
|
|
||||||
// Filter for our specific poll prefix and strip it for the UI
|
|
||||||
// poll:my-id -> my-id
|
|
||||||
const polls = allKeys
|
|
||||||
.filter(key => key.startsWith('poll:'))
|
|
||||||
.map(key => key.replace('poll:', ''));
|
|
||||||
|
|
||||||
return { polls };
|
|
||||||
});
|
|
||||||
@@ -1,41 +0,0 @@
|
|||||||
// server/api/users/[id].ts
|
|
||||||
export default defineEventHandler(async (event) => {
|
|
||||||
const method = event.node.req.method;
|
|
||||||
const userId = getRouterParam(event, 'id');
|
|
||||||
|
|
||||||
// We use Nitro's built-in storage.
|
|
||||||
// 'polls' is the storage namespace.
|
|
||||||
const storage = useStorage('users');
|
|
||||||
|
|
||||||
if (!userId) {
|
|
||||||
throw createError({ statusCode: 400, statusMessage: 'User ID required' });
|
|
||||||
}
|
|
||||||
|
|
||||||
// GET: Fetch the saved Yjs document state
|
|
||||||
if (method === 'GET') {
|
|
||||||
const data = await storage.getItem(`user:${userId}`);
|
|
||||||
// Return the array of numbers (or null if it doesn't exist yet)
|
|
||||||
return { public_key: data };
|
|
||||||
}
|
|
||||||
|
|
||||||
// POST: Save a new Yjs document state
|
|
||||||
if (method === 'POST') {
|
|
||||||
const body = await readBody(event);
|
|
||||||
|
|
||||||
if (body.public_key) {
|
|
||||||
const data = await storage.getItem(`user:${userId}`);
|
|
||||||
|
|
||||||
if (data == undefined || data == null) {
|
|
||||||
// Save the binary update (sent as an array of numbers) to storage
|
|
||||||
await storage.setItem(`user:${userId}`, body.public_key);
|
|
||||||
console.log("New User created: " + userId)
|
|
||||||
console.log("Public Key: " + body.public_key);
|
|
||||||
return { success: true };
|
|
||||||
}
|
|
||||||
|
|
||||||
throw createError({ statusCode: 400, statusMessage: 'User already exists.' });
|
|
||||||
}
|
|
||||||
|
|
||||||
throw createError({ statusCode: 400, statusMessage: 'Invalid update payload' });
|
|
||||||
}
|
|
||||||
});
|
|
||||||
@@ -1,86 +0,0 @@
|
|||||||
import { SignedData, VoteData } from "./types";
|
|
||||||
/**
|
|
||||||
* Gets the WebCrypto API regardless of environment (Node vs Browser)
|
|
||||||
*/
|
|
||||||
const getCrypto = () => {
|
|
||||||
return (globalThis as any).crypto;
|
|
||||||
};
|
|
||||||
|
|
||||||
export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
|
|
||||||
const encoder = new TextEncoder();
|
|
||||||
const encodedData = encoder.encode(JSON.stringify(data));
|
|
||||||
|
|
||||||
// Convert Base64 back to Uint8Array
|
|
||||||
const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
|
|
||||||
|
|
||||||
return await getCrypto().subtle.verify(
|
|
||||||
"RSASSA-PKCS1-v1_5",
|
|
||||||
publicKey,
|
|
||||||
signature,
|
|
||||||
encodedData
|
|
||||||
);
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Verifies a specific vote within an array of votes by
|
|
||||||
* reconstructing the "signed state" at that point in time.
|
|
||||||
*/
|
|
||||||
export const verifyChainedVote = async (
|
|
||||||
voteData: SignedData<VoteData>[],
|
|
||||||
index: number,
|
|
||||||
pubKey: CryptoKey
|
|
||||||
) => {
|
|
||||||
const voteToVerify = voteData[index];
|
|
||||||
console.log("Verifying vote: " + voteToVerify)
|
|
||||||
if(voteToVerify) {
|
|
||||||
// 1. Reconstruct the exact data state the user signed
|
|
||||||
// We need the array exactly as it was when they pushed their vote
|
|
||||||
const historicalState = voteData.slice(0, index + 1).map((v, i) => {
|
|
||||||
if (i === index) {
|
|
||||||
// For the current vote, the signature must be empty string
|
|
||||||
// because it wasn't signed yet when passed to signVote
|
|
||||||
return { ...v, signature: "" };
|
|
||||||
}
|
|
||||||
return v;
|
|
||||||
});
|
|
||||||
|
|
||||||
try {
|
|
||||||
// 3. Verify: Does this historicalState match the signature?
|
|
||||||
return await verifyVote(historicalState, voteToVerify.signature, pubKey);
|
|
||||||
} catch (err) {
|
|
||||||
console.error("Verification failed")
|
|
||||||
console.error(err);
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
console.error("Vote is undefined or null");
|
|
||||||
return false;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Converts a Base64 string back into a usable CryptoKey object
|
|
||||||
* @param keyStr The Base64 string (without PEM headers)
|
|
||||||
* @param type 'public' or 'private'
|
|
||||||
*/
|
|
||||||
export const stringToCryptoKey = async (keyStr: string, type: 'public' | 'private'): Promise<CryptoKey> => {
|
|
||||||
// 1. Convert Base64 string to a Uint8Array (binary)
|
|
||||||
const bytes = Buffer.from(keyStr, 'base64');
|
|
||||||
|
|
||||||
// 2. Identify the format based on the key type
|
|
||||||
// Public keys usually use 'spki', Private keys use 'pkcs8'
|
|
||||||
const format = type === 'public' ? 'spki' : 'pkcs8';
|
|
||||||
const usages: KeyUsage[] = type === 'public' ? ['verify'] : ['sign'];
|
|
||||||
|
|
||||||
// 3. Import the key
|
|
||||||
return await getCrypto().subtle.importKey(
|
|
||||||
format,
|
|
||||||
bytes,
|
|
||||||
{
|
|
||||||
name: "RSASSA-PKCS1-v1_5",
|
|
||||||
hash: "SHA-256",
|
|
||||||
},
|
|
||||||
true, // extractable (set to false if you want to lock it in memory)
|
|
||||||
usages
|
|
||||||
);
|
|
||||||
};
|
|
||||||
@@ -1,36 +0,0 @@
|
|||||||
export interface PollProps {
|
|
||||||
userid: string | undefined,
|
|
||||||
activePollId: string,
|
|
||||||
pollData: PollData,
|
|
||||||
addOption: (name: string) => void,
|
|
||||||
vote: (optionName: string) => void
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface PollListProps {
|
|
||||||
userid: string | undefined,
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface PollData extends Record<string, SignedData<VoteData>[]> {
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface SignedData<T> {
|
|
||||||
data: T,
|
|
||||||
signature: string
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface VoteData {
|
|
||||||
userid: string,
|
|
||||||
timestamp: string
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface OptionData {
|
|
||||||
userid: string,
|
|
||||||
timestamp: string,
|
|
||||||
optionName: string
|
|
||||||
}
|
|
||||||
|
|
||||||
export interface UserData {
|
|
||||||
userid: string,
|
|
||||||
private_key: CryptoKey | undefined,
|
|
||||||
public_key: CryptoKey | undefined
|
|
||||||
}
|
|
||||||
Reference in New Issue
Block a user