diff --git a/src/pages/api/activitypub/actor.ts b/functions/api/activitypub/actor.ts
similarity index 92%
rename from src/pages/api/activitypub/actor.ts
rename to functions/api/activitypub/actor.ts
index d2e2fbd2..fcf1d504 100644
--- a/src/pages/api/activitypub/actor.ts
+++ b/functions/api/activitypub/actor.ts
@@ -1,6 +1,8 @@
 /* eslint-disable import/prefer-default-export */
 
-export const GET = () =>
+import { Env } from './types';
+
+export const onRequestGet: PagesFunction<Env> = (ctx) =>
   new Response(
     JSON.stringify({
       '@context': ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1'],
@@ -37,9 +39,7 @@ export const GET = () =>
       publicKey: {
         id: 'https://blog.yunyi.beiyan.us/api/activitypub/actor#main-key',
         owner: 'https://blog.yunyi.beiyan.us/api/activitypub/actor',
-        publicKeyPem: `-----BEGIN PUBLIC KEY-----
-MCowBQYDK2VwAyEAK32mZ6NHWvErlVDNipED0uv0WoxpHvcL2OWCQ/mCLBw=
------END PUBLIC KEY-----`,
+        publicKeyPem: JSON.parse(ctx.env.PUBLIC_KEY),
       },
     }),
     { headers: { 'Content-Type': 'application/activity+json' } },
diff --git a/functions/api/activitypub/inbox.ts b/functions/api/activitypub/inbox.ts
index 12dae850..449dd85b 100644
--- a/functions/api/activitypub/inbox.ts
+++ b/functions/api/activitypub/inbox.ts
@@ -3,8 +3,10 @@ import type { AP } from 'activitypub-core-types';
 import { Kysely } from 'kysely';
 import { D1Dialect } from 'kysely-d1';
 import type { Database, Env } from './types';
+import { getPrivateKey } from '../../src/utils/getKey';
+import { signRequest } from '../../src/utils/http-signing';
 
-const handleFollow = async (body: AP.Follow, db: Kysely<Database>) => {
+const handleFollow = async (body: AP.Follow, db: Kysely<Database>, env: Env) => {
   if (Array.isArray(body.actor)) throw new Error('Not Implemented');
   let aid = '';
   if (typeof body.actor === 'string') aid = body.actor;
@@ -19,7 +21,7 @@ const handleFollow = async (body: AP.Follow, db: Kysely<Database>) => {
       oc.column('actorId').doUpdateSet({ inbox: info.inbox as unknown as string }),
     )
     .execute();
-  await fetch(info.inbox as unknown as string, {
+  const acceptReq = new Request(info.inbox as unknown as string, {
     method: 'post',
     headers: { 'Content-Type': 'application/activity+json', Accept: 'application/activity+json' },
     body: JSON.stringify({
@@ -37,6 +39,13 @@ const handleFollow = async (body: AP.Follow, db: Kysely<Database>) => {
       },
     }),
   });
+  const privKey = await getPrivateKey(env);
+  await signRequest(
+    acceptReq,
+    privKey,
+    new URL('https://blog.yunyi.beiyan.us/api/activitypub/actor'),
+  );
+  await fetch(acceptReq);
   return new Response('Ok');
 };
 
@@ -59,7 +68,7 @@ export const onRequestPost: PagesFunction<Env> = async (ctx) => {
   if (!['Follow', 'Undo'].includes(body.type)) throw new Error('Not Implemented');
   switch (body.type) {
     case 'Follow':
-      return handleFollow(body as AP.Follow, db);
+      return handleFollow(body as AP.Follow, db, ctx.env);
     case 'Undo':
       return handleUnfollow(body as AP.Undo, db);
     default:
diff --git a/functions/api/genKeyPair/test.ts b/functions/api/genKeyPair/test.ts
deleted file mode 100644
index 5da0fd30..00000000
--- a/functions/api/genKeyPair/test.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { Env } from '../activitypub/types';
-
-export const onRequestGet: PagesFunction<Env> = async (ctx) => {
-  return new Response(JSON.stringify({ pub: JSON.parse(ctx.env.PUBLIC_KEY) }));
-};
diff --git a/functions/src/utils/getKey.ts b/functions/src/utils/getKey.ts
new file mode 100644
index 00000000..34b60834
--- /dev/null
+++ b/functions/src/utils/getKey.ts
@@ -0,0 +1,6 @@
+import { Env } from '../../api/activitypub/types';
+import { importPrivKey, importPublicKey } from './key-ops';
+
+export const getPublicKey = async (env: Env) => importPublicKey(JSON.parse(env.PUBLIC_KEY));
+
+export const getPrivateKey = async (env: Env) => importPrivKey(JSON.parse(env.PRIV_KEY));
diff --git a/tsconfig.json b/tsconfig.json
index 9b843a73..b0f6695d 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -17,6 +17,6 @@
       "@assets/*": ["src/assets/*"]
     }
   },
-  "include": ["src/**/*.astro", "src/**/*.ts", "src/**/*.tsx", "uno.config.ts", "astro.config.ts"],
+  "include": ["src/**/*.astro", "src/**/*.ts", "src/**/*.tsx", "uno.config.ts", "astro.config.ts"]
   // "references": [{ "path": "./functions/tsconfig.json" }]
 }