Cloud computing technology is considered to be the top most strategic technology in today's world. This is the result made in the advancement in storage technology towards cloud computing. The world of cloud computing has become more and more advanced in the recent years. It has become more and more popular and powerful in gaining everyone's attention in the field axdbhof research and business as well. Advanced cryptographic techniques are proposed for performing security much stronger way. Therefore, people from different field especially for business in companies are relying on cloud storage. Auditability is considered as an important factor for securing the cloud environment to overcome the hacking issue. Data auditability has been designed for storing the cloud data. This paper discusses various data security algorithms for public cloud computing area.