....

Back/Controllers/BaseController.cs

@@ -47,7 +47,13 @@ namespace Back.Controllers
         }
         [HttpPost("ReadPublicKeyFromCER")]
         public async Task<ActionResult<PublicKeyDTO>> ReadPublicKeyFromCER(string modelfromBase64)
-        => Ok(await _sBase.ReadPublicKeyFromCER(modelfromBase64));
+        {
+            var result = await _sBase.ReadPublicKeyFromCER(modelfromBase64);
+            if (result.type== "error")
+                return BadRequest();
+            
+           return Ok(result);
+        }
         
     }
 }