디렉터리 페이지 레이아웃 구현 및 디렉터리 생성 구현

src/routes/(main)/directory/[[id]]/service.ts

@@ -0,0 +1,49 @@
+import { callSignedPostApi } from "$lib/hooks";
+import {
+  encodeToBase64,
+  decodeFromBase64,
+  generateAESDataKey,
+  encryptAESPlaintext,
+  decryptAESCiphertext,
+  wrapAESDataKey,
+  unwrapAESDataKey,
+} from "$lib/modules/crypto";
+import type { DirectroyInfoResponse, DirectoryCreateRequest } from "$lib/server/schemas";
+import type { MasterKey } from "$lib/stores";
+
+export const decryptDirectroyMetadata = async (
+  metadata: NonNullable<DirectroyInfoResponse["metadata"]>,
+  masterKey: CryptoKey,
+) => {
+  const dataDecryptKey = await unwrapAESDataKey(decodeFromBase64(metadata.dek), masterKey);
+  return {
+    name: new TextDecoder().decode(
+      await decryptAESCiphertext(
+        decodeFromBase64(metadata.name),
+        decodeFromBase64(metadata.nameIv),
+        dataDecryptKey,
+      ),
+    ),
+  };
+};
+
+export const requestDirectroyCreation = async (
+  name: string,
+  parentId: "root" | number,
+  masterKey: MasterKey,
+  signKey: CryptoKey,
+) => {
+  const dataKey = await generateAESDataKey();
+  const nameEncrypted = await encryptAESPlaintext(new TextEncoder().encode(name), dataKey);
+  return await callSignedPostApi<DirectoryCreateRequest>(
+    "/api/directory/create",
+    {
+      parentId,
+      mekVersion: masterKey.version,
+      dek: encodeToBase64(await wrapAESDataKey(dataKey, masterKey.key)),
+      name: encodeToBase64(nameEncrypted.ciphertext),
+      nameIv: encodeToBase64(nameEncrypted.iv.buffer),
+    },
+    signKey,
+  );
+};