Update rustbn-wasm usage

packages/evm/examples/browser.html

@@ -15,7 +15,7 @@
             const stateManager = new DefaultStateManager()
             const blockchain = await Blockchain.create()
 
-            const evm = new EVM({
+            const evm = await EVM.create({
                 common,
                 stateManager,
                 blockchain,

packages/evm/examples/eips.ts

@@ -1,6 +1,10 @@
 import { Chain, Common } from '@ethereumjs/common'
 import { EVM } from '@ethereumjs/evm'
 
-const common = new Common({ chain: Chain.Mainnet, eips: [3074] })
-const evm = new EVM({ common })
-console.log(`EIP 3074 is active - ${evm.common.isActivatedEIP(3074)}`)
+const main = async () => {
+  const common = new Common({ chain: Chain.Mainnet, eips: [3074] })
+  const evm = await EVM.create({ common })
+  console.log(`EIP 3074 is active - ${evm.common.isActivatedEIP(3074)}`)
+}
+
+main()

packages/evm/examples/runCode.ts

@@ -7,7 +7,7 @@ const main = async () => {
   const common = new Common({ chain: Chain.Mainnet, hardfork: Hardfork.London })
   const blockchain = await Blockchain.create()
 
-  const evm = new EVM({
+  const evm = await EVM.create({
     common,
     blockchain,
   })

packages/evm/examples/simple.ts

@@ -1,8 +1,8 @@
 import { hexToBytes } from '@ethereumjs/util'
 import { EVM } from '@ethereumjs/evm'
 
-const evm = new EVM()
 const main = async () => {
+  const evm = await EVM.create({})
   const res = await evm.runCode({ code: hexToBytes('0x6001') }) // PUSH1 01 -- simple bytecode to push 1 onto the stack
   console.log(res.executionGasUsed) // 3n
 }

packages/evm/examples/withBlockchain.ts

@@ -9,7 +9,7 @@ const main = async () => {
   const stateManager = new DefaultStateManager()
   const blockchain = await Blockchain.create()
 
-  const evm = new EVM({
+  const evm = await EVM.create({
     common,
     stateManager,
     blockchain,

packages/evm/package.json

@@ -60,7 +60,7 @@
     "@types/debug": "^4.1.9",
     "debug": "^4.3.3",
     "ethereum-cryptography": "^2.1.3",
-    "rustbn-wasm": "^0.2.0"
+    "rustbn-wasm": "^0.4.0"
   },
   "devDependencies": {
     "@ethersproject/abi": "^5.0.12",

packages/evm/src/evm.ts

@@ -17,6 +17,7 @@
   zeros,
 } from '@ethereumjs/util'
 import debugDefault from 'debug'
+import { initRustBN } from 'rustbn-wasm'
 
 import { EOF, getEOFCode } from './eof.js'
 import { ERROR, EvmError } from './exceptions.js'
@@ -137,7 +138,24 @@
 
   protected readonly _emit: (topic: string, data: any) => Promise<void>
 
-  constructor(opts: EVMOpts = {}) {
+  private bn128: {
+    ec_pairing: (input_str: string) => string
+    ec_add: (input_str: string) => string
+    ec_mul: (input_hex: string) => string
+  }
+
+  static async create(createOpts?: EVMOpts) {
+    const opts = createOpts ?? ({} as EVMOpts)
+    if (opts?.bn128 === undefined) {
+      opts.bn128 = await initRustBN()
+    }
+    return new EVM(opts)
+  }
+  constructor(opts: EVMOpts) {
+    if (opts.bn128 === undefined) {
+      throw new Error('rustbn not provided')
+    }
+    this.bn128 = opts.bn128 // Required to instantiate the EVM
     this.events = new AsyncEventEmitter()
 
     this._optsCached = opts
@@ -1079,6 +1097,7 @@
       ...this._optsCached,
       common,
       stateManager: this.stateManager.shallowCopy(),
+      bn128: this.bn128,
     }
     ;(opts.stateManager as any).common = common
     return new EVM(opts)

packages/evm/src/index.ts

@@ -11,8 +11,10 @@ import {
   EVMRunCodeOpts,
   ExecResult,
   Log,
+  bn128,
 } from './types.js'
 export {
+  bn128,
   EOF,
   EVM,
   EvmError,

packages/evm/src/precompiles/06-ecadd.ts

@@ -1,8 +1,8 @@
 import { bytesToHex, bytesToUnprefixedHex, hexToBytes, short } from '@ethereumjs/util'
-import { ec_add } from 'rustbn-wasm'
 
 import { OOGResult } from '../evm.js'
 
+import type { EVM } from '../evm.js'
 import type { ExecResult } from '../types.js'
 import type { PrecompileInput } from './types.js'
 
@@ -24,7 +24,7 @@ export function precompile06(opts: PrecompileInput): ExecResult {
     return OOGResult(opts.gasLimit)
   }
 
-  const returnData = hexToBytes(ec_add(inputData))
+  const returnData = hexToBytes((opts._EVM as EVM)['bn128'].ec_add(inputData))
 
   // check ecadd success or failure by comparing the output length
   if (returnData.length !== 64) {

packages/evm/src/precompiles/07-ecmul.ts

@@ -1,8 +1,8 @@
 import { bytesToHex, bytesToUnprefixedHex, hexToBytes, short } from '@ethereumjs/util'
-import { ec_mul } from 'rustbn-wasm'
 
 import { OOGResult } from '../evm.js'
 
+import type { EVM } from '../evm.js'
 import type { ExecResult } from '../types.js'
 import type { PrecompileInput } from './types.js'
 
@@ -24,7 +24,7 @@ export function precompile07(opts: PrecompileInput): ExecResult {
     return OOGResult(opts.gasLimit)
   }
 
-  const returnData = hexToBytes(ec_mul(inputData))
+  const returnData = hexToBytes((opts._EVM as EVM)['bn128'].ec_mul(inputData))
 
   // check ecmul success or failure by comparing the output length
   if (returnData.length !== 64) {

packages/evm/src/precompiles/08-ecpairing.ts

@@ -1,8 +1,8 @@
 import { bytesToHex, bytesToUnprefixedHex, hexToBytes, short } from '@ethereumjs/util'
-import { ec_pairing } from 'rustbn-wasm'
 
 import { OOGResult } from '../evm.js'
 
+import type { EVM } from '../evm.js'
 import type { ExecResult } from '../types.js'
 import type { PrecompileInput } from './types.js'
 
@@ -28,7 +28,9 @@ export function precompile08(opts: PrecompileInput): ExecResult {
     return OOGResult(opts.gasLimit)
   }
 
-  const returnData = hexToBytes(ec_pairing(bytesToUnprefixedHex(inputData)))
+  const returnData = hexToBytes(
+    (opts._EVM as EVM)['bn128'].ec_pairing(bytesToUnprefixedHex(inputData))
+  )
 
   // check ecpairing success or failure by comparing the output length
   if (returnData.length !== 32) {

packages/evm/src/types.ts

@@ -172,6 +172,14 @@ export type EVMProfilerOpts = {
  * Options for instantiating a {@link EVM}.
  */
 export interface EVMOpts {
+  /**
+   * The BN128 curve package (`rustbn-wasm`)
+   */
+  bn128?: {
+    ec_pairing: (input_str: string) => string
+    ec_add: (input_str: string) => string
+    ec_mul: (input_hex: string) => string
+  }
   /**
    * Use a {@link Common} instance for EVM instantiation.
    *
@@ -380,3 +388,12 @@ export class DefaultBlockchain implements Blockchain {
     return this
   }
 }
+
+/**
+ * The BN128 curve package (`rustbn-wasm`)
+ */
+export interface bn128 {
+  ec_pairing: (input_str: string) => string
+  ec_add: (input_str: string) => string
+  ec_mul: (input_hex: string) => string
+}

packages/evm/test/asyncEvents.spec.ts

@@ -7,7 +7,7 @@ describe('async events', () => {
   it('should work', async () => {
     const caller = new Address(hexToBytes('0x00000000000000000000000000000000000000ee'))
     const common = new Common({ chain: Chain.Mainnet, hardfork: Hardfork.Constantinople })
-    const evm = new EVM({
+    const evm = await EVM.create({
       common,
     })
     evm.events.on('step', async (event, next) => {

packages/evm/test/blobVersionedHashes.spec.ts

@@ -14,7 +14,7 @@ describe('BLOBHASH / access blobVersionedHashes in calldata', () => {
       chain: 'custom',
       hardfork: Hardfork.Cancun,
     })
-    const evm = new EVM({
+    const evm = await EVM.create({
       common,
     })
 
@@ -44,7 +44,7 @@ describe(`BLOBHASH: access blobVersionedHashes within contract calls`, () => {
       chain: 'custom',
       hardfork: Hardfork.Cancun,
     })
-    const evm = new EVM({
+    const evm = await EVM.create({
       common,
     })
 
@@ -95,7 +95,7 @@ describe(`BLOBHASH: access blobVersionedHashes in a CREATE/CREATE2 frame`, () =>
       chain: 'custom',
       hardfork: Hardfork.Cancun,
     })
-    const evm = new EVM({
+    const evm = await EVM.create({
       common,
     })
 

packages/evm/test/customCrypto.spec.ts

@@ -23,7 +23,7 @@ describe('custom crypto', () => {
     }
     const msg = Uint8Array.from([0, 1, 2, 3])
     const common = new Common({ chain: Chain.Mainnet, customCrypto })
-    const evm = new EVM({ common })
+    const evm = await EVM.create({ common })
     const addressStr = '0000000000000000000000000000000000000002'
     const SHA256 = getActivePrecompiles(common).get(addressStr)!
     const result = await SHA256({
@@ -46,7 +46,7 @@ describe('custom crypto', () => {
     }
     const msg = concatBytes(randomBytes(32), setLengthLeft(intToBytes(27), 32), randomBytes(32))
     const common = new Common({ chain: Chain.Mainnet, customCrypto })
-    const evm = new EVM({ common })
+    const evm = await EVM.create({ common })
     const addressStr = '0000000000000000000000000000000000000001'
     const ECRECOVER = getActivePrecompiles(common).get(addressStr)!
     const result = await ECRECOVER({

packages/evm/test/customOpcodes.spec.ts

@@ -25,9 +25,7 @@ describe('VM: custom opcodes', () => {
   }
 
   it('should add custom opcodes to the EVM', async () => {
-    const evm = new EVM({
-      customOpcodes: [testOpcode],
-    })
+    const evm = await EVM.create({ customOpcodes: [testOpcode] })
     const gas = 123456
     let correctOpcodeName = false
     evm.events.on('step', (e: InterpreterStep) => {
@@ -45,7 +43,7 @@ describe('VM: custom opcodes', () => {
   })
 
   it('should delete opcodes from the EVM', async () => {
-    const evm = new EVM({
+    const evm = await EVM.create({
       customOpcodes: [{ opcode: 0x20 }], // deletes KECCAK opcode
     })
     const gas = BigInt(123456)
@@ -59,7 +57,7 @@ describe('VM: custom opcodes', () => {
   it('should not override default opcodes', async () => {
     // This test ensures that always the original opcode map is used
     // Thus, each time you recreate a EVM, it is in a clean state
-    const evm = new EVM({
+    const evm = await EVM.create({
       customOpcodes: [{ opcode: 0x01 }], // deletes ADD opcode
     })
     const gas = BigInt(123456)
@@ -69,7 +67,7 @@ describe('VM: custom opcodes', () => {
     })
     assert.ok(res.executionGasUsed === gas, 'successfully deleted opcode')
 
-    const evmDefault = new EVM({})
+    const evmDefault = await EVM.create({})
 
     // PUSH 04
     // PUSH 01
@@ -88,9 +86,7 @@ describe('VM: custom opcodes', () => {
 
   it('should override opcodes in the EVM', async () => {
     testOpcode.opcode = 0x20 // Overrides KECCAK
-    const evm = new EVM({
-      customOpcodes: [testOpcode],
-    })
+    const evm = await EVM.create({ customOpcodes: [testOpcode] })
     const gas = 123456
     const res = await evm.runCode({
       code: hexToBytes('0x20'),
@@ -113,9 +109,7 @@ describe('VM: custom opcodes', () => {
       },
     }
 
-    const evm = new EVM({
-      customOpcodes: [testOpcode],
-    })
+    const evm = await EVM.create({ customOpcodes: [testOpcode] })
     evm.events.on('beforeMessage', () => {})
     evm.events.on('beforeMessage', () => {})
     const evmCopy = evm.shallowCopy()