diff --git a/src/services/authenticator/authenticatorService.ts b/src/services/authenticator/authenticatorService.ts
index b0ae58ef6..9928f8b41 100644
--- a/src/services/authenticator/authenticatorService.ts
+++ b/src/services/authenticator/authenticatorService.ts
@@ -1,5 +1,5 @@
 import HTTPService from 'services/HTTPService';
-import { AuthEntity } from 'types/authenticator/auth_entity';
+import { AuthEntity } from 'types/authenticator/api';
 import { Code } from 'types/authenticator/code';
 import ComlinkCryptoWorker from 'utils/comlink/ComlinkCryptoWorker';
 import { getEndpoint } from 'utils/common/apiUtil';
@@ -61,7 +61,7 @@ export const getAuthCodes = async (): Promise<Code[]> => {
     }
 };
 
-export const getAuthKey = async () => {
+export const getAuthKey = async (): Promise<AuthEntity> => {
     try {
         const resp = await HTTPService.get(
             `${ENDPOINT}/authenticator/key`,
diff --git a/src/types/authenticator/auth_entity.ts b/src/types/authenticator/api.ts
similarity index 70%
rename from src/types/authenticator/auth_entity.ts
rename to src/types/authenticator/api.ts
index cd97f5262..569df8185 100644
--- a/src/types/authenticator/auth_entity.ts
+++ b/src/types/authenticator/api.ts
@@ -6,3 +6,8 @@ export interface AuthEntity {
     createdAt: number;
     updatedAt: number;
 }
+
+export interface AuthKey {
+    encryptedKey: string;
+    header: string;
+}