Dynamic Proof of Storage (PoS) is a conducive cryptographic rudimentary technology that empowers a client to cohere the respectability of outsourced and in addition insourced records and to proficiently refresh the documents in a server. A multi-client needs the protected customer side cross-client replica method, enabling a client to avoid the transferring procedure, when different proprietors of similar documents have transferred them to the server. Application gives an adaptable and helpful route for information sharing, which brings different advantages for both the general public and people. Be that as it may, there exists a characteristic protection for clients to straightforwardly outsource and insource the common information to the server since the information regularly contain profitable data. It is important to put cryptographically upgraded get to control on the mutual information. Character based encryption is a promising cryptographical primitive to assemble a handy information sharing framework.