Dual layer security using signcryption and relocation over a cloud

secure data broadcasting and storage space is one of the major aspects from cloud computing aspect. In today's era cloud computing is becoming popular as it gives variety of users an extra hand. So for a cloud service provider it is a challenging job to ensure the clients about security and integrity of their data. The traditional methods of providing such type of secrecy and security are digital signature and cryptography. In this paper we have proposed a method of two level security to data for secure transmission and storage with reduction in computational cost. In the paper a technique of signature then encryption method in single algorithm as first level and relocation data at data center at second level is proposed.