Abstract: - Cloud computing is an advanced emerging technology. In this world the storage of data is a big headache for all. Cloud computing is an efficient solution for the easiest and fastest storage and retrieval of data. The main issue in cloud computing is security. Here I am trying to introduce a new method for providing secured access control in cloud computing. This model provides a secure access control in cloud computing. To provide more secured access control it adopt a hierarchical structure and it uses a clock. Using this we can easily upload, download , delete files from and to the cloud.