diff --git a/src/lib/crypto.ts b/src/lib/crypto.ts
index 3985984caf..b563f1abd2 100644
--- a/src/lib/crypto.ts
+++ b/src/lib/crypto.ts
@@ -1,7 +1,6 @@
 import nodeCrypto from "crypto";
 
 import * as secp from "@noble/secp256k1";
-import { concat } from "uint8arrays/concat";
 
 declare const self: Record<string, any> | undefined;
 const crypto: { node?: any; web?: any } = {
@@ -22,17 +21,4 @@ export function getSubtle(): SubtleCrypto {
 }
 
 export const randomBytes = secp.utils.randomBytes;
-
-export async function sha256(...messages: Uint8Array[]): Promise<Uint8Array> {
-  if (crypto.web) {
-    const buffer = await crypto.web.subtle.digest("SHA-256", concat(messages));
-    return new Uint8Array(buffer);
-  } else if (crypto.node) {
-    const { createHash } = crypto.node;
-    const hash = createHash("sha256");
-    messages.forEach((m) => hash.update(m));
-    return Uint8Array.from(hash.digest());
-  } else {
-    throw new Error("The environment doesn't have sha256 function");
-  }
-}
+export const sha256 = secp.utils.sha256;