Initial commit: add .gitignore and README

2026-02-09 21:51:48 -08:00
commit d4ba3d45e5
174 changed files with 32756 additions and 0 deletions
--- a/smart_contracts/scripts/privacy/concurrent_private_txs.js
+++ b/smart_contracts/scripts/privacy/concurrent_private_txs.js
@@ -0,0 +1,130 @@
+const Web3 = require("web3");
+const Web3Quorum = require("web3js-quorum");
+const Tx = require("ethereumjs-tx");
+const PromisePool = require("async-promise-pool");
+const { tessera, besu } = require("../keys.js");
+
+const chainId = 1337;
+const web3 = new Web3Quorum(new Web3(besu.member1.url), chainId);
+
+/*
+  Transactions are sent in batches.
+  TX_COUNT defines the total of transactions
+  BATCH_SIZE defines how many transactions will be sent at once
+*/
+const TX_COUNT = 100;
+const BATCH_SIZE = 5;
+
+// options used to create a privacy group with only one member
+const privacyOptions = {
+  privateFrom: tessera.member1.publicKey,
+  privateFor: [tessera.member1.publicKey],
+  privateKey: besu.member1.accountPrivateKey,
+};
+
+const deployContractData =
+  "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";
+
+// get nonce of account in the privacy group
+function getPrivateNonce(account) {
+  return web3.priv.getTransactionCount(
+    account,
+    web3.utils.generatePrivacyGroup(privacyOptions)
+  );
+}
+
+// get public nonce of account
+function getPublicNonce(account) {
+  return web3.eth.getTransactionCount(account, "pending");
+}
+
+// distribute payload to participants
+function distributePayload(payload, nonce) {
+  return web3.priv.generateAndDistributeRawTransaction({
+    ...privacyOptions,
+    data: payload,
+    nonce,
+  });
+}
+
+// create and sign PMT
+function sendPMT(sender, enclaveKey, nonce) {
+  const rawTx = {
+    nonce: web3.utils.numberToHex(nonce), // PMT nonce
+    from: sender,
+    to: "0x000000000000000000000000000000000000007e", // privacy precompile address
+    data: enclaveKey,
+    gasLimit: "0x5a88",
+  };
+
+  const tx = new Tx(rawTx);
+  tx.sign(Buffer.from(besu.member1.accountPrivateKey, "hex"));
+
+  const hexTx = `0x${tx.serialize().toString("hex")}`;
+
+  // eslint-disable-next-line promise/avoid-new
+  return new Promise((resolve, reject) => {
+    web3.eth
+      .sendSignedTransaction(hexTx)
+      .once("receipt", (rcpt) => {
+        resolve(rcpt);
+      })
+      .on("error", (error) => {
+        reject(error);
+      });
+  });
+}
+
+function printPrivTxDetails(pmtRcpt) {
+  return web3.priv
+    .waitForTransactionReceipt(pmtRcpt.transactionHash)
+    .then((privTxRcpt) => {
+      console.log(
+        `=== Private TX ${privTxRcpt.transactionHash}\n` +
+          `  > Status ${privTxRcpt.status}\n` +
+          `  > Block #${pmtRcpt.blockNumber}\n` +
+          `  > PMT Index #${pmtRcpt.transactionIndex}\n` +
+          `  > PMT Hash ${pmtRcpt.transactionHash}\n`
+      );
+      return Promise.resolve();
+    });
+}
+
+/*
+  Example of sending private transactions in batch.
+
+  The basic steps are:
+
+  1. Find the expected public and private nonce for the sender account
+  2. Ditribute the private transaction (incrementing the private nonce)
+  3. Create a PMT for each private transaction (incrementing the public nonce)
+*/
+module.exports = async () => {
+  const sender = "0xfe3b557e8fb62b89f4916b721be55ceb828dbd73";
+
+  const privateNonce = await getPrivateNonce(sender);
+  const publicNonce = await getPublicNonce(sender);
+
+  const pool = new PromisePool({ concurrency: BATCH_SIZE });
+
+  for (let i = 0; i < TX_COUNT; i += 1) {
+    pool.add(() => {
+      return distributePayload(deployContractData, privateNonce + i)
+        .then((enclaveKey) => {
+          return sendPMT(sender, enclaveKey, publicNonce + i);
+        })
+        .then(printPrivTxDetails);
+    });
+  }
+
+  await pool.all();
+};
+
+if (require.main === module) {
+  module.exports().catch((error) => {
+    console.log(error);
+    console.log(
+      "\nThis example requires ONCHAIN privacy to be DISABLED. \nCheck config for ONCHAIN privacy groups."
+    );
+  });
+}