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itsdarshankumaritsdarshankumar
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‎.gitignore

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node_modules
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.env
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coverage
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coverage.json
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typechain
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typechain-types
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/client/conn.js
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/client/img6.jpg
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#Hardhat files
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cache
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artifacts
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‎README.md

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# Sample Hardhat Project
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This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, and a script that deploys that contract.
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Try running some of the following tasks:
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```shell
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npx hardhat help
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npx hardhat test
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REPORT_GAS=true npx hardhat test
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npx hardhat node
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npx hardhat run scripts/deploy.ts
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```

‎client/contracts/file.dbg.json

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{
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"_format": "hh-sol-dbg-1",
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"buildInfo": "../../build-info/a480fab96d04ec0665559c9326edc220.json"
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}

‎client/contracts/file.json

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{
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"_format": "hh-sol-artifact-1",
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"contractName": "file",
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"sourceName": "contracts/file.sol",
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"abi": [
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{
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"inputs": [],
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"name": "modelCount",
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"outputs": [
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{
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"internalType": "uint256",
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"name": "",
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"type": "uint256"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [
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{
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"internalType": "address",
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"name": "",
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"type": "address"
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}
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],
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"name": "models",
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"outputs": [
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{
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"internalType": "string",
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"name": "modelHash",
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"type": "string"
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},
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{
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"internalType": "uint256",
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"name": "fileSize",
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"type": "uint256"
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},
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{
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"internalType": "address payable",
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"name": "node",
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"type": "address"
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}
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],
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"stateMutability": "view",
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"type": "function"
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},
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{
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"inputs": [
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{
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"internalType": "string",
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"name": "_modelHash",
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"type": "string"
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},
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{
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"internalType": "uint256",
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"name": "_modelSize",
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"type": "uint256"
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}
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],
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"name": "uploadModel",
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"outputs": [],
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"stateMutability": "nonpayable",
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"type": "function"
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}
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],
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"bytecode": "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",
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"deployedBytecode": "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",
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"linkReferences": {},
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"deployedLinkReferences": {}
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}

‎client/getUID.js

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const { ethers } = require("ethers");
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const HDWalletProvider = require("@truffle/hdwallet-provider");
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// Get the EOA and provider from you choice of your wallet.
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const pkey = "pkey";
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const polygonRPC = "https://rpc-mumbai.maticvigil.com/";
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const main = async () => {
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let provider = new HDWalletProvider(pkey, polygonRPC);
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const walletProvider = new ethers.providers.Web3Provider(provider);
10+
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const fileInterface = new ethers.utils.Interface([
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{
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inputs: [
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{
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internalType: "address payable",
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name: "viewerNode",
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type: "address",
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},
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],
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name: "fetchModel",
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outputs: [
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{
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internalType: "string",
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name: "",
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type: "string",
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},
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],
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stateMutability: "view",
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type: "function",
30+
},
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{
32+
inputs: [],
33+
name: "modelCount",
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outputs: [
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{
36+
internalType: "uint256",
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name: "",
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type: "uint256",
39+
},
40+
],
41+
stateMutability: "view",
42+
type: "function",
43+
},
44+
{
45+
inputs: [
46+
{
47+
internalType: "address",
48+
name: "",
49+
type: "address",
50+
},
51+
],
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name: "models",
53+
outputs: [
54+
{
55+
internalType: "string",
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name: "modelHash",
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type: "string",
58+
},
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{
60+
internalType: "uint256",
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name: "fileSize",
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type: "uint256",
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},
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{
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internalType: "address payable",
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name: "node",
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type: "address",
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},
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],
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stateMutability: "view",
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type: "function",
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},
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{
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inputs: [
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{
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internalType: "string",
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name: "_modelHash",
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type: "string",
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},
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{
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internalType: "uint256",
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name: "_modelSize",
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type: "uint256",
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},
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{
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internalType: "address payable",
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name: "callerNode",
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type: "address",
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},
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],
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name: "uploadModel",
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outputs: [],
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stateMutability: "nonpayable",
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type: "function",
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},
96+
]);
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const fileContract = new ethers.Contract(
99+
"",
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fileInterface,
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walletProvider
102+
);
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let fetchedHash = await fileContract.fetchModel(
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""
106+
);
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console.log("Fetched Hash", fetchedHash);
108+
};
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main();

‎client/retrieve.js

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// Decrypt file nodejs
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const {ethers} = require("ethers");
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const fs = require("fs");
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const lighthouse = require('@lighthouse-web3/sdk');
5+
6+
const sign_auth_message = async(publicKey, privateKey) =>{
7+
const provider = new ethers.providers.JsonRpcProvider();
8+
const signer = new ethers.Wallet(privateKey, provider);
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const messageRequested = (await lighthouse.getAuthMessage(publicKey)).data.message
10+
const signedMessage = await signer.signMessage(messageRequested);
11+
return(signedMessage)
12+
}
13+
14+
const decrypt = async() =>{
15+
const cid = "cid";
16+
const publicKey = "";
17+
const privateKey = "";
18+
19+
// Get file encryption key
20+
const signed_message = await sign_auth_message(publicKey, privateKey);
21+
const fileEncryptionKey = await lighthouse.fetchEncryptionKey(
22+
cid,
23+
publicKey,
24+
signed_message
25+
);
26+
27+
console.log(fileEncryptionKey.data.key);
28+
29+
// Decrypt File
30+
const decrypted = await lighthouse.decryptFile(
31+
cid,
32+
fileEncryptionKey.data.key
33+
);
34+
console.log(decrypted);
35+
36+
// Save File
37+
fs.createWriteStream("fileName.jpg").write(Buffer.from(decrypted))
38+
}
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decrypt()

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