From 5f2a383f8ba60cf3b164e9da92439a0bb35bc56b Mon Sep 17 00:00:00 2001
From: Oleh Komendant <oleg02kom@gmail.com>
Date: Fri, 15 Nov 2024 16:43:35 +0200
Subject: [PATCH] Change hash function from the MD5 to the SHA256

---
 package-lock.json                            |  4 ++--
 package.json                                 |  2 +-
 src/core/dependencies/CircomFilesResolver.ts |  4 ++--
 src/utils/utils.ts                           | 11 ++++++++---
 4 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 1843f6c..1f7cbca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@solarity/hardhat-zkit",
-  "version": "0.5.1",
+  "version": "0.5.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@solarity/hardhat-zkit",
-      "version": "0.5.1",
+      "version": "0.5.2",
       "license": "MIT",
       "workspaces": [
         "test/fixture-projects/*"
diff --git a/package.json b/package.json
index 6df0dc9..737eeea 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@solarity/hardhat-zkit",
-  "version": "0.5.1",
+  "version": "0.5.2",
   "description": "The ultimate TypeScript environment for Circom development",
   "main": "dist/src/index.js",
   "types": "dist/src/index.d.ts",
diff --git a/src/core/dependencies/CircomFilesResolver.ts b/src/core/dependencies/CircomFilesResolver.ts
index d021ebc..e5d16e9 100644
--- a/src/core/dependencies/CircomFilesResolver.ts
+++ b/src/core/dependencies/CircomFilesResolver.ts
@@ -16,10 +16,10 @@ import {
 import { assertHardhatInvariant, HardhatError } from "hardhat/internal/core/errors";
 import { ERRORS } from "hardhat/internal/core/errors-list";
 import { getRealPath } from "hardhat/internal/util/fs-utils";
-import { createNonCryptographicHashBasedIdentifier } from "hardhat/internal/util/hash";
 
 import { CircomFilesParser } from "./parser/CircomFilesParser";
 import { CIRCOM_FILE_REG_EXP, NODE_MODULES, NODE_MODULES_REG_EXP, URI_SCHEME_REG_EXP } from "../../constants";
+import { getSHA256Hash } from "../../utils";
 import { HardhatZKitError } from "../../errors";
 
 import {
@@ -385,7 +385,7 @@ export class CircomFilesResolver {
     const stats = await fsExtra.stat(absolutePath);
     const lastModificationDate = new Date(stats.ctime);
 
-    const contentHash = createNonCryptographicHashBasedIdentifier(Buffer.from(rawContent)).toString("hex");
+    const contentHash = getSHA256Hash(rawContent);
 
     const fileData = this._parser.parse(rawContent, absolutePath, contentHash);
 
diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index 7700617..72bc51b 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -1,11 +1,10 @@
 import fsExtra from "fs-extra";
 import https from "https";
+import { createHash } from "crypto";
 import { exec } from "child_process";
 
 import * as snarkjs from "snarkjs";
 
-import { createNonCryptographicHashBasedIdentifier } from "hardhat/internal/util/hash";
-
 import { ProvingSystemType } from "@solarity/zkit";
 
 import { Reporter } from "../reporter";
@@ -105,7 +104,13 @@ export async function execCall(execFile: string, callArgs: string[]): Promise<Ex
 }
 
 export function getFileHash(filePath: string): string {
-  return createNonCryptographicHashBasedIdentifier(Buffer.from(fsExtra.readFileSync(filePath))).toString("hex");
+  return getSHA256Hash(fsExtra.readFileSync(filePath, "utf-8"));
+}
+
+export function getSHA256Hash(rawFileData: string): string {
+  const fileData: Buffer = Buffer.from(rawFileData);
+
+  return createHash("sha256").update(fileData).digest().toString("hex");
 }
 
 export function getUniqueProvingSystems(provingSystems: ProvingSystemType | ProvingSystemType[]): ProvingSystemType[] {