From 02cf92d6dbfc6618d9efa9b4dfee81c7c075dbb3 Mon Sep 17 00:00:00 2001
From: Frederik Bolding <frederik.bolding@gmail.com>
Date: Thu, 18 Dec 2025 10:03:03 +0100
Subject: [PATCH] chore: Use SHA-256 utility

---
 packages/snaps-utils/package.json         |  1 -
 packages/snaps-utils/src/checksum.test.ts | 26 -----------------------
 packages/snaps-utils/src/checksum.ts      | 14 ++----------
 yarn.lock                                 |  1 -
 4 files changed, 2 insertions(+), 40 deletions(-)

diff --git a/packages/snaps-utils/package.json b/packages/snaps-utils/package.json
index 78681f5d4a..79ac236dbc 100644
--- a/packages/snaps-utils/package.json
+++ b/packages/snaps-utils/package.json
@@ -89,7 +89,6 @@
     "@metamask/snaps-sdk": "workspace:^",
     "@metamask/superstruct": "^3.2.1",
     "@metamask/utils": "^11.9.0",
-    "@noble/hashes": "^1.7.1",
     "@scure/base": "^1.1.1",
     "chalk": "^4.1.2",
     "cron-parser": "^4.5.0",
diff --git a/packages/snaps-utils/src/checksum.test.ts b/packages/snaps-utils/src/checksum.test.ts
index 8db6875a4b..8d0d94069e 100644
--- a/packages/snaps-utils/src/checksum.test.ts
+++ b/packages/snaps-utils/src/checksum.test.ts
@@ -1,6 +1,4 @@
-import * as nobleHashes from '@noble/hashes/sha256';
 import { base64 } from '@scure/base';
-import { webcrypto } from 'crypto';
 
 import { checksum, checksumFiles } from './checksum';
 import { VirtualFile } from './virtual-file';
@@ -37,30 +35,6 @@ describe('checksum', () => {
     expect(base64.encode(await checksum(''))).toBe(EMPTY_SHA256);
     expect(base64.encode(await checksum(new Uint8Array()))).toBe(EMPTY_SHA256);
   });
-
-  it('uses crypto.subtle when it is available', async () => {
-    const cryptoSpy = jest.spyOn(webcrypto.subtle, 'digest');
-
-    Object.defineProperty(globalThis, 'crypto', {
-      value: webcrypto,
-      writable: true,
-    });
-
-    expect(base64.encode(await checksum(FOO_BAR_UINT8))).toBe(FOO_BAR_SHA256);
-    expect(cryptoSpy).toHaveBeenCalled();
-  });
-
-  it('uses noble-hashes when crypto.subtle is unavailable', async () => {
-    const nobleSpy = jest.spyOn(nobleHashes, 'sha256');
-
-    Object.defineProperty(globalThis, 'crypto', {
-      value: undefined,
-      writable: true,
-    });
-
-    expect(base64.encode(await checksum(FOO_BAR_UINT8))).toBe(FOO_BAR_SHA256);
-    expect(nobleSpy).toHaveBeenCalled();
-  });
 });
 
 describe('checkumFiles', () => {
diff --git a/packages/snaps-utils/src/checksum.ts b/packages/snaps-utils/src/checksum.ts
index 86be4dac42..b58e3733e3 100644
--- a/packages/snaps-utils/src/checksum.ts
+++ b/packages/snaps-utils/src/checksum.ts
@@ -1,5 +1,4 @@
-import { assert, concatBytes } from '@metamask/utils';
-import { sha256 } from '@noble/hashes/sha256';
+import { assert, concatBytes, sha256 } from '@metamask/utils';
 
 import { getBytes } from './bytes';
 import type { VirtualFile } from './virtual-file';
@@ -13,16 +12,7 @@ import type { VirtualFile } from './virtual-file';
 export async function checksum(
   bytes: VirtualFile | Uint8Array | string,
 ): Promise<Uint8Array> {
-  const value = getBytes(bytes);
-  // Use crypto.subtle.digest whenever possible as it is faster.
-  if (
-    'crypto' in globalThis &&
-    typeof globalThis.crypto === 'object' &&
-    crypto.subtle?.digest
-  ) {
-    return new Uint8Array(await crypto.subtle.digest('SHA-256', value));
-  }
-  return sha256(value);
+  return await sha256(getBytes(bytes));
 }
 
 /**
diff --git a/yarn.lock b/yarn.lock
index c203bded58..78ee57c4ea 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4527,7 +4527,6 @@ __metadata:
     "@metamask/snaps-sdk": "workspace:^"
     "@metamask/superstruct": "npm:^3.2.1"
     "@metamask/utils": "npm:^11.9.0"
-    "@noble/hashes": "npm:^1.7.1"
     "@scure/base": "npm:^1.1.1"
     "@swc/core": "npm:1.11.31"
     "@swc/jest": "npm:^0.2.38"