From 98812128d25b552341617ce488822f27b726cb4f Mon Sep 17 00:00:00 2001 From: mohib Date: Sat, 7 Sep 2024 10:51:25 +0500 Subject: [PATCH 1/2] project is done with secure transactions --- client/package-lock.json | 246 +++++++++++ client/package.json | 2 + client/src/App.jsx | 16 +- client/src/Transfer.jsx | 55 ++- client/src/Wallet.jsx | 22 +- client/src/server.js | 7 - client/utils/transaction.js | 11 + keymap.mjs | 30 ++ server/generator.js | 34 ++ server/index.js | 76 ++-- server/package-lock.json | 797 +++++++++++++++++++++++++++++++++++- server/package.json | 9 +- server/secured.txt | 11 + 13 files changed, 1237 insertions(+), 79 deletions(-) delete mode 100644 client/src/server.js create mode 100644 client/utils/transaction.js create mode 100644 keymap.mjs create mode 100644 server/generator.js create mode 100644 server/secured.txt diff --git a/client/package-lock.json b/client/package-lock.json index 3cf61093..e5fb64f6 100644 --- a/client/package-lock.json +++ b/client/package-lock.json @@ -9,6 +9,8 @@ "version": "0.0.0", "dependencies": { "axios": "^0.27.2", + "elliptic": "^6.5.6", + "ethereum-cryptography": "^2.2.1", "react": "^18.2.0", "react-dom": "^18.2.0" }, @@ -517,6 +519,66 @@ "@jridgewell/sourcemap-codec": "^1.4.10" } }, + "node_modules/@noble/curves": { + "version": "1.4.2", + "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.4.2.tgz", + "integrity": "sha512-TavHr8qycMChk8UwMld0ZDRvatedkzWfH8IiaeGCfymOP5i0hSCozz9vHOL0nkwk7HRMlFnAiKpS2jrUmSybcw==", + "license": "MIT", + "dependencies": { + "@noble/hashes": "1.4.0" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@noble/hashes": { + "version": "1.4.0", + "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.4.0.tgz", + "integrity": "sha512-V1JJ1WTRUqHHrOSh597hURcMqVKVGL/ea3kv0gSnEdsEZ0/+VyPghM1lMNGc00z7CIQorSvbKpuJkxvuHbvdbg==", + "license": "MIT", + "engines": { + "node": ">= 16" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@scure/base": { + "version": "1.1.7", + "resolved": "https://registry.npmjs.org/@scure/base/-/base-1.1.7.tgz", + "integrity": "sha512-PPNYBslrLNNUQ/Yad37MHYsNQtK67EhWb6WtSvNLLPo7SdVZgkUjD6Dg+5On7zNwmskf8OX7I7Nx5oN+MIWE0g==", + "license": "MIT", + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@scure/bip32": { + "version": "1.4.0", + "resolved": "https://registry.npmjs.org/@scure/bip32/-/bip32-1.4.0.tgz", + "integrity": "sha512-sVUpc0Vq3tXCkDGYVWGIZTRfnvu8LoTDaev7vbwh0omSvVORONr960MQWdKqJDCReIEmTj3PAr73O3aoxz7OPg==", + "license": "MIT", + "dependencies": { + "@noble/curves": "~1.4.0", + "@noble/hashes": "~1.4.0", + "@scure/base": "~1.1.6" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@scure/bip39": { + "version": "1.3.0", + "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.3.0.tgz", + "integrity": "sha512-disdg7gHuTDZtY+ZdkmLpPCk7fxZSu3gBiEGuoC1XYxv9cGx3Z6cpTggCgW6odSOOIXCiDjuGejW+aJKCY/pIQ==", + "license": "MIT", + "dependencies": { + "@noble/hashes": "~1.4.0", + "@scure/base": "~1.1.6" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, "node_modules/@types/prop-types": { "version": "15.7.5", "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.5.tgz", @@ -618,6 +680,12 @@ "node": ">=8" } }, + "node_modules/bn.js": { + "version": "4.12.0", + "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz", + "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA==", + "license": "MIT" + }, "node_modules/braces": { "version": "3.0.2", "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz", @@ -630,6 +698,12 @@ "node": ">=8" } }, + "node_modules/brorand": { + "version": "1.1.0", + "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz", + "integrity": 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"https://registry.npmjs.org/esbuild/-/esbuild-0.15.8.tgz", @@ -1178,6 +1267,18 @@ "node": ">=0.8.0" } }, + "node_modules/ethereum-cryptography": { + "version": "2.2.1", + "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-2.2.1.tgz", + "integrity": "sha512-r/W8lkHSiTLxUxW8Rf3u4HGB0xQweG2RyETjywylKZSzLWoWAijRz8WCuOtJ6wah+avllXBqZuk29HCCvhEIRg==", + "license": "MIT", + "dependencies": { + "@noble/curves": "1.4.2", + "@noble/hashes": "1.4.0", + "@scure/bip32": "1.4.0", + "@scure/bip39": "1.3.0" + } + }, "node_modules/fill-range": { "version": "7.0.1", "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz", @@ -1293,12 +1394,39 @@ "node": ">=4" } }, + "node_modules/hash.js": { + "version": "1.1.7", + "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz", + "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==", + "license": "MIT", + "dependencies": { + "inherits": "^2.0.3", + "minimalistic-assert": "^1.0.1" + } + }, + "node_modules/hmac-drbg": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz", + "integrity": "sha512-Tti3gMqLdZfhOQY1Mzf/AanLiqh1WTiJgEj26ZuYQ9fbkLomzGchCws4FyrSd4VkpBfiNhaE1On+lOz894jvXg==", + "license": "MIT", + "dependencies": { + "hash.js": "^1.0.3", + "minimalistic-assert": "^1.0.0", + "minimalistic-crypto-utils": "^1.0.1" + } + }, "node_modules/immutable": { "version": "4.1.0", "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.1.0.tgz", "integrity": "sha512-oNkuqVTA8jqG1Q6c+UglTOD1xhC1BtjKI7XkCXRkZHrN5m18/XsnUp8Q89GkQO/z+0WjonSvl0FLhDYftp46nQ==", "dev": true }, + "node_modules/inherits": { + "version": "2.0.4", + "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz", + "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==", + "license": "ISC" + }, "node_modules/is-binary-path": { "version": "2.1.0", "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz", @@ -1424,6 +1552,18 @@ "node": ">= 0.6" } }, + "node_modules/minimalistic-assert": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz", + "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==", + "license": "ISC" + }, + "node_modules/minimalistic-crypto-utils": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz", + "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg==", + "license": "MIT" + }, "node_modules/ms": { "version": "2.1.2", "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz", @@ -2107,6 +2247,43 @@ "@jridgewell/sourcemap-codec": "^1.4.10" } }, + "@noble/curves": { + "version": "1.4.2", + "resolved": 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"~1.4.0", + "@scure/base": "~1.1.6" + } + }, + "@scure/bip39": { + "version": "1.3.0", + "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.3.0.tgz", + "integrity": "sha512-disdg7gHuTDZtY+ZdkmLpPCk7fxZSu3gBiEGuoC1XYxv9cGx3Z6cpTggCgW6odSOOIXCiDjuGejW+aJKCY/pIQ==", + "requires": { + "@noble/hashes": "~1.4.0", + "@scure/base": "~1.1.6" + } + }, "@types/prop-types": { "version": "15.7.5", "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.5.tgz", @@ -2193,6 +2370,11 @@ "integrity": "sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA==", "dev": true }, + "bn.js": { + "version": "4.12.0", + "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz", + "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA==" + }, "braces": { "version": "3.0.2", "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz", @@ -2202,6 +2384,11 @@ "fill-range": "^7.0.1" } }, + "brorand": { + "version": "1.1.0", + "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz", + "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w==" + }, "browserslist": { "version": "4.21.4", "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.21.4.tgz", @@ -2305,6 +2492,20 @@ "integrity": "sha512-H+mFNKow6gi2P5Gi2d1Fvd3TUEJlB9CF7zYaIV9T83BE3wP1xZ0mRPbNTm0KUjyd1QiVy7iKXuIcjlDtBQMiAQ==", "dev": true }, + "elliptic": { + "version": "6.5.6", + "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.6.tgz", + "integrity": "sha512-mpzdtpeCLuS3BmE3pO3Cpp5bbjlOPY2Q0PgoF+Od1XZrHLYI28Xe3ossCmYCQt11FQKEYd9+PF8jymTvtWJSHQ==", + "requires": { + "bn.js": "^4.11.9", + "brorand": "^1.1.0", + "hash.js": "^1.0.0", + "hmac-drbg": "^1.0.1", + "inherits": "^2.0.4", + "minimalistic-assert": "^1.0.1", + "minimalistic-crypto-utils": "^1.0.1" + } + }, "esbuild": { "version": "0.15.8", "resolved": 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"is-binary-path": { "version": "2.1.0", "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz", @@ -2662,6 +2898,16 @@ "mime-db": "1.52.0" } }, + "minimalistic-assert": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz", + "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==" + }, + "minimalistic-crypto-utils": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz", + "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg==" + }, "ms": { "version": "2.1.2", "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz", diff --git a/client/package.json b/client/package.json index f662261b..b72d7624 100644 --- a/client/package.json +++ b/client/package.json @@ -10,6 +10,8 @@ }, "dependencies": { "axios": "^0.27.2", + "elliptic": "^6.5.6", + "ethereum-cryptography": "^2.2.1", "react": "^18.2.0", "react-dom": "^18.2.0" }, diff --git a/client/src/App.jsx b/client/src/App.jsx index 7254c1fa..62273fe6 100644 --- a/client/src/App.jsx +++ b/client/src/App.jsx @@ -1,11 +1,11 @@ -import Wallet from "./Wallet"; -import Transfer from "./Transfer"; -import "./App.scss"; -import { useState } from "react"; +import Wallet from './Wallet' +import Transfer from './Transfer' +import './App.scss' +import { useState } from 'react' function App() { - const [balance, setBalance] = useState(0); - const [address, setAddress] = useState(""); + const [balance, setBalance] = useState(0) + const [address, setAddress] = useState('') return (
@@ -17,7 +17,7 @@ function App() { />
- ); + ) } -export default App; +export default App diff --git a/client/src/Transfer.jsx b/client/src/Transfer.jsx index 7dac2bef..f153edf8 100644 --- a/client/src/Transfer.jsx +++ b/client/src/Transfer.jsx @@ -1,26 +1,47 @@ -import { useState } from "react"; -import server from "./server"; +import { useState } from 'react' + +import axios from 'axios' +import { signTransaction } from '../utils/transaction' +import { keyPairs } from '../../keymap' function Transfer({ address, setBalance }) { - const [sendAmount, setSendAmount] = useState(""); - const [recipient, setRecipient] = useState(""); + const [sendAmount, setSendAmount] = useState('') + const [recipient, setRecipient] = useState('') + + const setValue = (setter) => (evt) => setter(evt.target.value) + + function getPrivateKeyForTransaction(publicKey) { + const index = keyPairs.findIndex((el) => el.publicKey === publicKey) + + return keyPairs[index].privateKey + } - const setValue = (setter) => (evt) => setter(evt.target.value); + const transaction = {} async function transfer(evt) { - evt.preventDefault(); + evt.preventDefault() + transaction.to = recipient + transaction.from = address + transaction.amount = parseInt(sendAmount) try { - const { - data: { balance }, - } = await server.post(`send`, { - sender: address, - amount: parseInt(sendAmount), - recipient, - }); - setBalance(balance); + const privateKey = getPrivateKeyForTransaction(transaction.from) + + if (!privateKey) { + alert('private key not found') + } + + const signature = signTransaction(transaction, privateKey) + + const response = await axios.post('http://localhost:3042/send', { + transaction, + signature, + }) + const { balance } = response.data + + setBalance(balance) } catch (ex) { - alert(ex.response.data.message); + console.log(ex) } } @@ -48,7 +69,7 @@ function Transfer({ address, setBalance }) { - ); + ) } -export default Transfer; +export default Transfer diff --git a/client/src/Wallet.jsx b/client/src/Wallet.jsx index 8dde5242..bfcad41b 100644 --- a/client/src/Wallet.jsx +++ b/client/src/Wallet.jsx @@ -1,16 +1,16 @@ -import server from "./server"; +import server from './server' function Wallet({ address, setAddress, balance, setBalance }) { async function onChange(evt) { - const address = evt.target.value; - setAddress(address); + const address = evt.target.value + setAddress(address) if (address) { const { data: { balance }, - } = await server.get(`balance/${address}`); - setBalance(balance); + } = await server.get(`balance/${address}`) + setBalance(balance) } else { - setBalance(0); + setBalance(0) } } @@ -20,12 +20,16 @@ function Wallet({ address, setAddress, balance, setBalance }) {
Balance: {balance}
- ); + ) } -export default Wallet; +export default Wallet diff --git a/client/src/server.js b/client/src/server.js deleted file mode 100644 index 22ff4105..00000000 --- a/client/src/server.js +++ /dev/null @@ -1,7 +0,0 @@ -import axios from "axios"; - -const server = axios.create({ - baseURL: "http://localhost:3042", -}); - -export default server; diff --git a/client/utils/transaction.js b/client/utils/transaction.js new file mode 100644 index 00000000..18b00501 --- /dev/null +++ b/client/utils/transaction.js @@ -0,0 +1,11 @@ +import pkg from 'elliptic' +const { ec: EC } = pkg +const ec = new EC('secp256k1') + +export function signTransaction(transaction, privateKey) { + const keyPair = ec.keyFromPrivate(privateKey, 'hex') + const transactionString = JSON.stringify(transaction) + const hash = ec.hash().update(transactionString).digest('hex') + const signature = keyPair.sign(hash) + return signature.toDER('hex') +} diff --git a/keymap.mjs b/keymap.mjs new file mode 100644 index 00000000..663108a4 --- /dev/null +++ b/keymap.mjs @@ -0,0 +1,30 @@ +export const keyPairs = [ + { + publicKey: + '03517daef319b7a3e383bda36f7acb665ae418dfa8738992dd02429560a0999a76', + privateKey: + 'e95249f710f73bb59139d8a03fdcd9b094db38e298b7c8aa3acbd244e5efbca3', + balance: 100, + }, + { + publicKey: + '02c8c5dcde3807541a471ebc7658637d54d867c87e9763d30dbe4fdef8534d739c', + privateKey: + 'c527d30b2073410f1f97d8b22c7012fd1c24e13678cc7bb95808c2338a797e2d', + balance: 50, + }, + { + publicKey: + '03822e847d49f06a927eade5d8e8314f23243407eb30b36dff1e22d1671631382f', + privateKey: + '533771937cad0a21f1a07a53fc8d4cc2e0edf92c3465305bdb366edc3a4f22e3', + balance: 150, + }, + { + publicKey: + '0384d454f853902d0518d9123fa60ce433fa5ec8b234c631f9f874c61903260813', + privateKey: + '8ee1572c270c90437232ecd9e03387db87690ccfa58bf4fa8746806fed278605', + balance: 200, + }, +] diff --git a/server/generator.js b/server/generator.js new file mode 100644 index 00000000..b6dcc110 --- /dev/null +++ b/server/generator.js @@ -0,0 +1,34 @@ +import pkg from 'elliptic' +const { ec: EC } = pkg +const ec = new EC('secp256k1') +import { keyPairs } from '../keymap.mjs' + + +function verifyTransaction(transaction, signature, publicKey) { + const key = ec.keyFromPublic(publicKey, 'hex') + const transactionString = JSON.stringify(transaction) + + const hash = ec.hash().update(transactionString).digest('hex') + console.log(hash,transactionString,key) + return key.verify(hash, signature) +} + +function updateBalances(transaction) { + const sender = keyPairs.find((kp) => kp.publicKey === transaction.from) + const receiver = keyPairs.find((kp) => kp.publicKey === transaction.to) + + if (!sender || !receiver) { + throw new Error('Sender or receiver not found') + } + + if (sender.balance < transaction.amount) { + throw new Error('Insufficient funds') + } + + sender.balance -= transaction.amount + receiver.balance += transaction.amount + return sender.balance; +} + +export { verifyTransaction, updateBalances, keyPairs } + diff --git a/server/index.js b/server/index.js index 3dbd053b..f964194f 100644 --- a/server/index.js +++ b/server/index.js @@ -1,44 +1,50 @@ -const express = require("express"); -const app = express(); -const cors = require("cors"); -const port = 3042; - -app.use(cors()); -app.use(express.json()); - -const balances = { - "0x1": 100, - "0x2": 50, - "0x3": 75, -}; - -app.get("/balance/:address", (req, res) => { - const { address } = req.params; - const balance = balances[address] || 0; - res.send({ balance }); -}); - -app.post("/send", (req, res) => { - const { sender, recipient, amount } = req.body; - - setInitialBalance(sender); - setInitialBalance(recipient); - - if (balances[sender] < amount) { - res.status(400).send({ message: "Not enough funds!" }); +import express from 'express' +const app = express() +import cors from 'cors' +const port = 3042 + +import { keyPairs, verifyTransaction, updateBalances } from './generator.js' + +app.use(cors()) +app.use(express.json()) + +app.get('/balance/:address', (req, res) => { + const { address } = req.params + const balance = keyPairs.filter((el) => el.publicKey === address) || 0 + res.json({ balance: balance[0].balance }) +}) + +app.post('/send', async (req, res) => { + const { transaction, signature } = req.body + + const senderPublicKey = transaction.from + console.log(transaction) + + if (verifyTransaction(transaction, signature, senderPublicKey)) { + console.log(signature) + try { + const remainingBalance = updateBalances(transaction) + res.json({ + status: 'success', + message: 'Transaction completed', + balance: remainingBalance, + }) + } catch (error) { + res.status(400).json({ status: 'error', message: error.message }) + } } else { - balances[sender] -= amount; - balances[recipient] += amount; - res.send({ balance: balances[sender] }); + console.log('failed') + res.status(400).json({ status: 'error', message: 'Invalid signature' }) } -}); + +}) app.listen(port, () => { - console.log(`Listening on port ${port}!`); -}); + console.log(`Listening on port ${port}!`) +}) function setInitialBalance(address) { if (!balances[address]) { - balances[address] = 0; + balances[address] = 0 } } diff --git a/server/package-lock.json b/server/package-lock.json index 612c6e2d..997ba04e 100644 --- a/server/package-lock.json +++ b/server/package-lock.json @@ -10,7 +10,70 @@ "license": "ISC", "dependencies": { "cors": "^2.8.5", - "express": "^4.18.1" + "elliptic": "^6.5.6", + "ethereum-cryptography": "^2.2.1", + "express": "^4.18.1", + "nodemon": "^3.1.4" + } + }, + "node_modules/@noble/curves": { + "version": "1.4.2", + "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.4.2.tgz", + "integrity": "sha512-TavHr8qycMChk8UwMld0ZDRvatedkzWfH8IiaeGCfymOP5i0hSCozz9vHOL0nkwk7HRMlFnAiKpS2jrUmSybcw==", + "license": "MIT", + "dependencies": { + "@noble/hashes": "1.4.0" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@noble/hashes": { + "version": "1.4.0", + "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.4.0.tgz", + "integrity": "sha512-V1JJ1WTRUqHHrOSh597hURcMqVKVGL/ea3kv0gSnEdsEZ0/+VyPghM1lMNGc00z7CIQorSvbKpuJkxvuHbvdbg==", + "license": "MIT", + "engines": { + "node": ">= 16" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@scure/base": { + "version": "1.1.7", + "resolved": "https://registry.npmjs.org/@scure/base/-/base-1.1.7.tgz", + "integrity": "sha512-PPNYBslrLNNUQ/Yad37MHYsNQtK67EhWb6WtSvNLLPo7SdVZgkUjD6Dg+5On7zNwmskf8OX7I7Nx5oN+MIWE0g==", + "license": "MIT", + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@scure/bip32": { + "version": "1.4.0", + "resolved": "https://registry.npmjs.org/@scure/bip32/-/bip32-1.4.0.tgz", + "integrity": "sha512-sVUpc0Vq3tXCkDGYVWGIZTRfnvu8LoTDaev7vbwh0omSvVORONr960MQWdKqJDCReIEmTj3PAr73O3aoxz7OPg==", + "license": "MIT", + "dependencies": { + "@noble/curves": "~1.4.0", + "@noble/hashes": "~1.4.0", + "@scure/base": "~1.1.6" + }, + "funding": { + "url": "https://paulmillr.com/funding/" + } + }, + "node_modules/@scure/bip39": { + "version": "1.3.0", + "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.3.0.tgz", + "integrity": "sha512-disdg7gHuTDZtY+ZdkmLpPCk7fxZSu3gBiEGuoC1XYxv9cGx3Z6cpTggCgW6odSOOIXCiDjuGejW+aJKCY/pIQ==", + "license": "MIT", + "dependencies": { + "@noble/hashes": "~1.4.0", + "@scure/base": "~1.1.6" + }, + "funding": { + "url": "https://paulmillr.com/funding/" } }, "node_modules/accepts": { @@ -25,11 +88,48 @@ "node": ">= 0.6" } }, + "node_modules/anymatch": { + "version": "3.1.3", + "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz", + "integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==", + "license": "ISC", + "dependencies": { + "normalize-path": "^3.0.0", + "picomatch": "^2.0.4" + }, + "engines": { + "node": ">= 8" + } + }, "node_modules/array-flatten": { 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"dependencies": { + "fill-range": "^7.1.1" + }, + "engines": { + "node": ">=8" + } + }, + "node_modules/brorand": { + "version": "1.1.0", + "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz", + "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w==", + "license": "MIT" + }, "node_modules/bytes": { "version": "3.1.2", "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz", @@ -73,6 +201,36 @@ "url": "https://github.com/sponsors/ljharb" } }, + "node_modules/chokidar": { + "version": "3.6.0", + "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz", + "integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==", + "license": "MIT", + "dependencies": { + "anymatch": "~3.1.2", + "braces": "~3.0.2", + "glob-parent": "~5.1.2", + "is-binary-path": "~2.1.0", + "is-glob": "~4.0.1", + "normalize-path": "~3.0.0", + "readdirp": "~3.6.0" + }, + 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"https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz", @@ -881,6 +1564,24 @@ "mime-db": "1.52.0" } }, + "minimalistic-assert": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz", + "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==" + }, + "minimalistic-crypto-utils": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz", + "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg==" + }, + "minimatch": { + "version": "3.1.2", + "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz", + "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==", + "requires": { + "brace-expansion": "^1.1.7" + } + }, "ms": { "version": "2.0.0", "resolved": 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"resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz", + "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==" + }, "proxy-addr": { "version": "2.0.7", "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz", @@ -928,6 +1671,11 @@ "ipaddr.js": "1.9.1" } }, + "pstree.remy": { + "version": "1.1.8", + "resolved": "https://registry.npmjs.org/pstree.remy/-/pstree.remy-1.1.8.tgz", + "integrity": "sha512-77DZwxQmxKnu3aR542U+X8FypNzbfJ+C5XQDk3uWjWxn6151aIMGthWYRXTqT1E5oJvg+ljaa2OJi+VfvCOQ8w==" + }, "qs": { "version": "6.10.3", "resolved": "https://registry.npmjs.org/qs/-/qs-6.10.3.tgz", @@ -952,6 +1700,14 @@ "unpipe": "1.0.0" } }, + "readdirp": { + "version": "3.6.0", + "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz", + "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==", + "requires": { + "picomatch": "^2.2.1" + } + }, "safe-buffer": { "version": "5.2.1", "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz", @@ -962,6 +1718,11 @@ "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz", "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==" }, + "semver": { + "version": "7.6.3", + "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz", + "integrity": "sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==" + }, "send": { "version": "0.18.0", "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz", @@ -1015,16 +1776,45 @@ "object-inspect": "^1.9.0" } }, + "simple-update-notifier": { + "version": "2.0.0", + "resolved": "https://registry.npmjs.org/simple-update-notifier/-/simple-update-notifier-2.0.0.tgz", + "integrity": "sha512-a2B9Y0KlNXl9u/vsW6sTIu9vGEpfKu2wRV6l1H3XEas/0gUIzGzBoP/IouTcUQbm9JWZLH3COxyn03TYlFax6w==", + "requires": { + "semver": "^7.5.3" + } + }, "statuses": { "version": "2.0.1", "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.1.tgz", "integrity": "sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ==" }, + "supports-color": { + "version": "5.5.0", + "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz", + "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==", + "requires": { + "has-flag": "^3.0.0" + } + }, + "to-regex-range": { + "version": "5.0.1", + "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz", + "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==", + "requires": { + "is-number": "^7.0.0" + } + }, "toidentifier": { "version": "1.0.1", "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz", "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==" }, + "touch": { + "version": "3.1.1", + "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.1.tgz", + "integrity": "sha512-r0eojU4bI8MnHr8c5bNo7lJDdI2qXlWWJk6a9EAFG7vbhTjElYhBVS3/miuE0uOuoLdb8Mc/rVfsmm6eo5o9GA==" + }, "type-is": { "version": "1.6.18", "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz", @@ -1034,6 +1824,11 @@ "mime-types": "~2.1.24" } }, + "undefsafe": { + "version": "2.0.5", + "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz", + "integrity": "sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==" + }, "unpipe": { "version": "1.0.0", "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz", diff --git a/server/package.json b/server/package.json index c03b40a9..e83b0709 100644 --- a/server/package.json +++ b/server/package.json @@ -4,13 +4,18 @@ "description": "", "main": "index.js", "scripts": { - "test": "echo \"Error: no test specified\" && exit 1" + "test": "echo \"Error: no test specified\" && exit 1", + "start": "nodemon index" }, + "type": "module", "keywords": [], "author": "", "license": "ISC", "dependencies": { "cors": "^2.8.5", - "express": "^4.18.1" + "elliptic": "^6.5.6", + "ethereum-cryptography": "^2.2.1", + "express": "^4.18.1", + "nodemon": "^3.1.4" } } diff --git a/server/secured.txt b/server/secured.txt new file mode 100644 index 00000000..aaab4f2e --- /dev/null +++ b/server/secured.txt @@ -0,0 +1,11 @@ +e95249f710f73bb59139d8a03fdcd9b094db38e298b7c8aa3acbd244e5efbca3 +03517daef319b7a3e383bda36f7acb665ae418dfa8738992dd02429560a0999a76 + +'c527d30b2073410f1f97d8b22c7012fd1c24e13678cc7bb95808c2338a797e2d' +'02c8c5dcde3807541a471ebc7658637d54d867c87e9763d30dbe4fdef8534d739c' + +533771937cad0a21f1a07a53fc8d4cc2e0edf92c3465305bdb366edc3a4f22e3 +03822e847d49f06a927eade5d8e8314f23243407eb30b36dff1e22d1671631382f + +8ee1572c270c90437232ecd9e03387db87690ccfa58bf4fa8746806fed278605 +0384d454f853902d0518d9123fa60ce433fa5ec8b234c631f9f874c61903260813 From d961915a093266634564161efb234870ba954223 Mon Sep 17 00:00:00 2001 From: mohib Date: Sat, 7 Sep 2024 11:22:06 +0500 Subject: [PATCH 2/2] correctly updating amount --- server/generator.js | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/server/generator.js b/server/generator.js index b6dcc110..c578ace8 100644 --- a/server/generator.js +++ b/server/generator.js @@ -3,13 +3,12 @@ const { ec: EC } = pkg const ec = new EC('secp256k1') import { keyPairs } from '../keymap.mjs' - function verifyTransaction(transaction, signature, publicKey) { const key = ec.keyFromPublic(publicKey, 'hex') const transactionString = JSON.stringify(transaction) const hash = ec.hash().update(transactionString).digest('hex') - console.log(hash,transactionString,key) + console.log(hash, transactionString, key) return key.verify(hash, signature) } @@ -27,8 +26,19 @@ function updateBalances(transaction) { sender.balance -= transaction.amount receiver.balance += transaction.amount - return sender.balance; + + keyPairs.map((kp) => { + if (kp.publicKey === transaction.from) { + kp.balance = sender.balance + } + }) + + keyPairs.map((kp) => { + if (kp.publicKey === transaction.to) { + kp.balance = receiver.balance + } + }) + return sender.balance } export { verifyTransaction, updateBalances, keyPairs } -