This project enhances existing system and introduces new social network privacy management models. A mechanism of cryptography technique is used to obtain this objective. By applying the key concept the privacy and security is achieved. RSA algorithm of cryptography technique applies the encryption and decryption methods on the user publishing files which provide the way to securely transact the desired data to the recipient. Key concept enables the user to create group, create cloud, upload files, and assign private keys to the group members. This helps the member in a particular group can view the encrypted transmitted file using the private key.