diff --git a/middleware/app_be/services/hashservice.py b/middleware/app_be/services/hashservice.py
new file mode 100644
index 0000000..a2fa5b2
--- /dev/null
+++ b/middleware/app_be/services/hashservice.py
@@ -0,0 +1,7 @@
+import hashlib
+
+
+def create_sha512(b: bytes):
+    h = hashlib.sha512()
+    h.update(b)
+    return h.hexdigest()