feat: update ckzg to final DAS version

packages/beacon-node/package.json

@@ -132,7 +132,7 @@
     "@lodestar/utils": "^1.21.0",
     "@lodestar/validator": "^1.21.0",
     "@multiformats/multiaddr": "^12.1.3",
-    "c-kzg": "matthewkeil/c-kzg-4844#853b22fa416d4eac376678a36bfba0bccb59dd78",
+    "c-kzg": "^4.0.1",
     "datastore-core": "^9.1.1",
     "datastore-level": "^10.1.1",
     "deepmerge": "^4.3.1",

packages/beacon-node/src/node/nodejs.ts

@@ -20,7 +20,7 @@ import {MonitoringService} from "../monitoring/index.js";
 import {getApi, BeaconRestApiServer} from "../api/index.js";
 import {initializeExecutionEngine, initializeExecutionBuilder} from "../execution/index.js";
 import {initializeEth1ForBlockProduction} from "../eth1/index.js";
-import {initCKZG, loadEthereumTrustedSetup, TrustedFileMode} from "../util/kzg.js";
+import {initCKZG, loadEthereumTrustedSetup} from "../util/kzg.js";
 import {HistoricalStateRegen} from "../chain/historicalState/index.js";
 import {NodeId} from "../network/subnets/interface.js";
 import {IBeaconNodeOptions} from "./options.js";
@@ -164,7 +164,7 @@ export class BeaconNode {
     // If deneb is configured, load the trusted setup
     if (config.DENEB_FORK_EPOCH < Infinity) {
       await initCKZG();
-      loadEthereumTrustedSetup(TrustedFileMode.Txt, opts.chain.trustedSetupPrecompute, opts.chain.trustedSetup);
+      loadEthereumTrustedSetup(opts.chain.trustedSetupPrecompute, opts.chain.trustedSetup);
     }
 
     // Prune hot db repos

packages/beacon-node/src/util/kzg.ts

@@ -1,10 +1,3 @@
-import path from "node:path";
-import fs from "node:fs";
-import {fileURLToPath} from "node:url";
-import {fromHex, toHex} from "@lodestar/utils";
-
-/* eslint-disable @typescript-eslint/naming-convention */
-
 // "c-kzg" has hardcoded the mainnet value, do not use params
 export const FIELD_ELEMENTS_PER_BLOB_MAINNET = 4096;
 
@@ -13,7 +6,7 @@ function ckzgNotLoaded(): never {
 }
 
 export let ckzg: {
-  loadTrustedSetup(precompute: number, filePath: string): void;
+  loadTrustedSetup(precompute: number, filePath?: string): void;
   blobToKzgCommitment(blob: Uint8Array): Uint8Array;
   computeKzgProof(blob: Uint8Array, zBytes: Uint8Array): [Uint8Array, Uint8Array];
   computeBlobKzgProof(blob: Uint8Array, commitment: Uint8Array): Uint8Array;
@@ -41,140 +34,35 @@ export let ckzg: {
   verifyCellKzgProofBatch: ckzgNotLoaded,
 };
 
-// Global variable __dirname no longer available in ES6 modules.
-// Solutions: https://stackoverflow.com/questions/46745014/alternative-for-dirname-in-node-js-when-using-es6-modules
-const __dirname = path.dirname(fileURLToPath(import.meta.url));
-export const TRUSTED_SETUP_BIN_FILEPATH = path.join(__dirname, "../../trusted_setup.bin");
-const TRUSTED_SETUP_JSON_FILEPATH = path.join(__dirname, "../../trusted_setup.json");
-const TRUSTED_SETUP_TXT_FILEPATH = path.join(__dirname, "../../trusted_setup.txt");
-
-const POINT_COUNT_BYTES = 4;
-const G1POINT_BYTES = 48;
-const G2POINT_BYTES = 96;
-const G1POINT_COUNT = FIELD_ELEMENTS_PER_BLOB_MAINNET;
-const G2POINT_COUNT = 65;
-const TOTAL_SIZE = 2 * POINT_COUNT_BYTES + G1POINT_BYTES * G1POINT_COUNT + G2POINT_BYTES * G2POINT_COUNT;
-
 export async function initCKZG(): Promise<void> {
   /* eslint-disable @typescript-eslint/ban-ts-comment */
   // @ts-ignore
   ckzg = (await import("c-kzg")).default as typeof ckzg;
   /* eslint-enable @typescript-eslint/ban-ts-comment */
 }
 
-export enum TrustedFileMode {
-  Bin = "bin",
-  Txt = "txt",
-}
-
 /**
  * Load our KZG trusted setup into C-KZG for later use.
  * We persist the trusted setup as serialized bytes to save space over TXT or JSON formats.
  * However the current c-kzg API **requires** to read from a file with a specific .txt format
  */
 export function loadEthereumTrustedSetup(
-  mode: TrustedFileMode = TrustedFileMode.Txt,
   precompute = 0, // default to 0 for testing
   filePath?: string
 ): void {
   try {
-    let setupFilePath;
-    if (mode === TrustedFileMode.Bin) {
-      const binPath = filePath ?? TRUSTED_SETUP_BIN_FILEPATH;
-      const bytes = fs.readFileSync(binPath);
-      const json = trustedSetupBinToJson(bytes);
-      const txt = trustedSetupJsonToTxt(json);
-      fs.writeFileSync(TRUSTED_SETUP_TXT_FILEPATH, txt);
-      setupFilePath = TRUSTED_SETUP_TXT_FILEPATH;
-    } else {
-      setupFilePath = filePath ?? TRUSTED_SETUP_TXT_FILEPATH;
-    }
-
     try {
       // in unit tests, calling loadTrustedSetup() twice has error so we have to free and retry
-      ckzg.loadTrustedSetup(precompute, setupFilePath);
+      ckzg.loadTrustedSetup(precompute, filePath);
     } catch (e) {
       if ((e as Error).message !== "Error trusted setup is already loaded") {
         throw e;
       }
     }
   } catch (e) {
-    (e as Error).message = `Error loading trusted setup ${TRUSTED_SETUP_JSON_FILEPATH}: ${(e as Error).message}`;
+    (e as Error).message = filePath
+      ? `Error loading trusted setup ${filePath}: ${(e as Error).message}`
+      : `Error loading default trusted setup: ${(e as Error).message}`;
     throw e;
   }
 }
-
-/* eslint-disable @typescript-eslint/naming-convention */
-export interface TrustedSetupJSON {
-  setup_G1: string[];
-  setup_G2: string[];
-}
-
-type TrustedSetupBin = Uint8Array;
-type TrustedSetupTXT = string;
-
-/**
- * Custom format defined in https://github.com/ethereum/c-kzg-4844/issues/3
- */
-export function trustedSetupJsonToBin(data: TrustedSetupJSON): TrustedSetupBin {
-  const out = new Uint8Array(TOTAL_SIZE);
-  const dv = new DataView(out.buffer, out.byteOffset, out.byteLength);
-
-  dv.setUint32(0, G1POINT_COUNT);
-  dv.setUint32(POINT_COUNT_BYTES, G2POINT_BYTES);
-
-  for (let i = 0; i < G1POINT_COUNT; i++) {
-    const point = fromHex(data.setup_G1[i]);
-    if (point.length !== G1POINT_BYTES) throw Error(`g1 point size ${point.length} != ${G1POINT_BYTES}`);
-    out.set(point, 2 * POINT_COUNT_BYTES + i * G1POINT_BYTES);
-  }
-
-  for (let i = 0; i < G2POINT_COUNT; i++) {
-    const point = fromHex(data.setup_G2[i]);
-    if (point.length !== G2POINT_BYTES) throw Error(`g2 point size ${point.length} != ${G2POINT_BYTES}`);
-    out.set(point, 2 * POINT_COUNT_BYTES + G1POINT_COUNT * G1POINT_BYTES + i * G2POINT_BYTES);
-  }
-
-  return out;
-}
-
-export function trustedSetupBinToJson(bytes: TrustedSetupBin): TrustedSetupJSON {
-  const data: TrustedSetupJSON = {
-    setup_G1: [],
-    setup_G2: [],
-  };
-
-  if (bytes.length < TOTAL_SIZE) {
-    throw Error(`trusted_setup size ${bytes.length} < ${TOTAL_SIZE}`);
-  }
-
-  for (let i = 0; i < G1POINT_COUNT; i++) {
-    const start = 2 * POINT_COUNT_BYTES + i * G1POINT_BYTES;
-    data.setup_G1.push(toHex(bytes.slice(start, start + G1POINT_BYTES)));
-  }
-
-  for (let i = 0; i < G2POINT_COUNT; i++) {
-    const start = 2 * POINT_COUNT_BYTES + G1POINT_COUNT * G1POINT_BYTES + i * G2POINT_BYTES;
-    data.setup_G1.push(toHex(bytes.slice(start, start + G2POINT_BYTES)));
-  }
-
-  return data;
-}
-
-export function trustedSetupJsonToTxt(data: TrustedSetupJSON): TrustedSetupTXT {
-  return [
-    // ↵
-    G1POINT_COUNT,
-    G2POINT_COUNT,
-    ...data.setup_G1.map(strip0xPrefix),
-    ...data.setup_G2.map(strip0xPrefix),
-  ].join("\n");
-}
-
-function strip0xPrefix(hex: string): string {
-  if (hex.startsWith("0x")) {
-    return hex.slice(2);
-  } else {
-    return hex;
-  }
-}