In many ways cloud Computing were gaining popularity from several years. Cloud computing is a type of computing that relies on sharing resources in compare to based on local servers or personal devices to handle applications. In present implementation of cloud computing, it rapidly increasing in IT industry and in other organization also. It is a collection of much number of dedicated distributed databases. Cloud computing have the number of benefits over single place and unfortunately that data has been lost then there is no recovery of data. If a data is store only at single place and unfortunately that data has been lost then there is no recovery of data. Cloud computing having one more benefit such that we can store more than one copy of data, in this manner if a data is going to be loss at one place that can be retrieved from other place. The problem of service unavailability has been solved by using cloud computing, which was a major concern in single cloud. In cloud computing auditing service for user also becoming a major issue. When a client is interacting with the cloud it having no physical association with cloud for a long time, in this case security issue took a major threat for cloud computing. For this we propose a novel technique that is Auditing service which ensure the integrity and availability of outsourced data in cloud computing. Here we are going to propose Provable Data Possession (PDP) which using cryptography technique for data possession in cloud computing. Here we will also show that cost for auditing data by using PDP is less than the previous one. This technique will be best for untrusted server for realizing the security threat which affects the integrity of data into cloud. Using Provable data procession technique, we will show auditing service in this paper. Our algorithm also uses some cryptographic techniques.
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