diff --git a/src/shared/Encrypter.ts b/src/shared/Encrypter.ts
index 9c251fc..e9047fc 100644
--- a/src/shared/Encrypter.ts
+++ b/src/shared/Encrypter.ts
@@ -37,6 +37,6 @@ export class Encrypter {
   }
 
   static hash(clearText: string): string {
-    return crypto.createHash('sha256', this.key).update(clearText).digest('base64');
+    return crypto.createHmac('sha256', this.key).update(clearText).digest('base64');
   }
 }
\ No newline at end of file