add mocks for evm signature functions

README.md

@@ -1,6 +1,6 @@
 # Massa-as-sdk
 
-![check-code-coverage](https://img.shields.io/badge/coverage-82%25-green)
+![check-code-coverage](https://img.shields.io/badge/coverage-83%%25-red)
 
 Massa-as-sdk is a collection of tools, objects, and functions specifically designed for Massa smart contracts in AssemblyScript. This SDK enables you to import object classes, such as address and storage objects, and use them without having to write them from scratch every time. Additionally, it allows you to use Massa's ABI functions.
 

assembly/__tests__/utils.ts

@@ -6,3 +6,14 @@ export function staticArrayToHexString(arr: StaticArray<u8>): string {
   }
   return result;
 }
+
+export function hexStringToStaticArray(hexString: string): StaticArray<u8> {
+  let result = new StaticArray<u8>(hexString.length / 2);
+
+  for (let i = 0; i < hexString.length; i += 2) {
+    let byte = parseInt(hexString.substr(i, 2), 16);
+    result[i / 2] = <u8>byte;
+  }
+
+  return result;
+}

assembly/__tests__/vm-mock.spec.ts

@@ -1,3 +1,4 @@
+/* eslint-disable max-len */
 import {
   Address,
   Storage,
@@ -7,6 +8,8 @@ import {
   getKeysOf,
   validateAddress,
   keccak256,
+  isEvmSignatureValid,
+  evmGetPubkeyFromSignature,
 } from '../std';
 import { changeCallStack, resetStorage } from '../vm-mock/storage';
 import {
@@ -17,7 +20,7 @@ import {
 import { Args, bytesToString, stringToBytes } from '@massalabs/as-types';
 import { env } from '../env/index';
 import { callee, caller, isDeployingContract } from '../std/context';
-import { staticArrayToHexString } from './utils';
+import { hexStringToStaticArray, staticArrayToHexString } from './utils';
 
 const testAddress = new Address(
   'AU12E6N5BFAdC2wyiBV6VJjqkWhpz1kLVp2XpbRdSnL1mKjCWT6oR',
@@ -256,4 +259,34 @@ describe('Testing mocked Context', () => {
 
     expect(caller().toString()).toStrictEqual(callee().toString());
   });
+
+  it('should verify evm signature', () => {
+    const data = stringToBytes('Hello World');
+    const signature = hexStringToStaticArray(
+      '1617966ef37eaff4312132243df65cfb66ccda057e996b586f910d6eb422787453b0a8465be9716493650d6706bc84efe85a5d76a0111c89d0cdf8ba57e510571c',
+    );
+    // secp256k1 raw public key (compression header byte has been removed)
+    const publicKey = hexStringToStaticArray(
+      'ae04a0fb4545138d22ed46eee76e683c50412ffb8cb02ee8fa5a5c8eec35f72dc076cb1b7468f8cacf136a7e0609b31ed580746d8efc659a993ccd695d6387ff',
+    );
+
+    expect(isEvmSignatureValid(data, signature, publicKey)).toStrictEqual(true);
+  });
+
+  it('should get evm public key from signature', () => {
+    const digest = hexStringToStaticArray(
+      'a1de988600a42c4b4ab089b619297c17d53cffae5d5120d82d8a92d0bb3b78f2',
+    );
+    const signature = hexStringToStaticArray(
+      '1617966ef37eaff4312132243df65cfb66ccda057e996b586f910d6eb422787453b0a8465be9716493650d6706bc84efe85a5d76a0111c89d0cdf8ba57e510571c',
+    );
+    // secp256k1 public key (with compression header byte)
+    const publicKey = hexStringToStaticArray(
+      '04ae04a0fb4545138d22ed46eee76e683c50412ffb8cb02ee8fa5a5c8eec35f72dc076cb1b7468f8cacf136a7e0609b31ed580746d8efc659a993ccd695d6387ff',
+    );
+
+    expect(evmGetPubkeyFromSignature(digest, signature)).toStrictEqual(
+      publicKey,
+    );
+  });
 });

package.json

@@ -37,9 +37,10 @@
     "@massalabs/as-types": "^1.0.0",
     "@massalabs/eslint-config": "^0.0.8",
     "@massalabs/prettier-config-as": "^0.0.2",
-    "js-sha3": "^0.9.2",
     "as-bignum": "^0.2.40",
+    "ethers": "^6.8.1",
     "husky": "^8.0.2",
+    "js-sha3": "^0.9.2",
     "lint-staged": "^13.0.3",
     "prettier": "^2.7.1",
     "typedoc": "^0.23.23",