diff --git a/server/src/vault.ts b/server/src/vault.ts
index a0ae67c..45548db 100644
--- a/server/src/vault.ts
+++ b/server/src/vault.ts
@@ -17,18 +17,22 @@
  */
 import { readFile } from 'node:fs/promises';
 
-import { importPKCS8, importSPKI } from 'jose';
+import { importPKCS8, importSPKI, KeyLike } from 'jose';
 import { Service } from 'typedi';
 
 @Service()
 export class Vault {
-  async privKey() {
-    const privKeyBuf = await readFile('privkey.pem');
-    return importPKCS8(privKeyBuf.toString(), 'EdDSA');
-  }
+  privateKey!: KeyLike;
+  publicKey!: KeyLike;
 
-  async pubKey() {
-    const pubKeyBuf = await readFile('pubkey.pem');
-    return importSPKI(pubKeyBuf.toString(), 'EdDSA');
+  // TODO: Convert to environment variables and check if defined
+  async build() {
+    const privateKeyBuffer = await readFile('privkey.pem');
+    this.privateKey = await importPKCS8(privateKeyBuffer.toString(), 'EdDSA');
+
+    const publicKeyBuffer = await readFile('pubkey.pem');
+    this.publicKey = await importSPKI(publicKeyBuffer.toString(), 'EdDSA');
+
+    return this;
   }
 }