업로드할 때에도 스트리밍 방식으로 처리하도록 변경

src/lib/modules/crypto/sha.ts

@@ -1,7 +1,20 @@
+import { hmac } from "@noble/hashes/hmac.js";
+import { sha256 } from "@noble/hashes/sha2.js";
+
 export const digestMessage = async (message: BufferSource) => {
   return await crypto.subtle.digest("SHA-256", message);
 };
 
+export const createStreamingHmac = async (hmacSecret: CryptoKey) => {
+  const keyBytes = new Uint8Array(await crypto.subtle.exportKey("raw", hmacSecret));
+  const h = hmac.create(sha256, keyBytes);
+
+  return {
+    update: (data: Uint8Array) => h.update(data),
+    digest: () => h.digest(),
+  };
+};
+
 export const generateHmacSecret = async () => {
   return {
     hmacSecret: await crypto.subtle.generateKey(