Privacy Preserving Authenticated Key Exchange over Cloud

Key exchange for providing network security in particular Data encryption standard (DES) is the core cryptographic mechanism. For key exchange over the cloud security and privacy both are required. In this paper we have developed a family of privacy preserving authenticated DES algorithm both in traditional PKI setting and in the identity based setting. The newly developed DES are of conceptual level and practical based efficiency. It provides very useful privacy protection to protocol participants and add a new value to the IKE standard. As per our information, the protocols are the secure DES protocols which provide the following privacy protection advantages: 1) concurrent non-malleable statistical, forward deniability. 2) The session key and session transcript can be generated that cannot be traced to the pair of protocol participants. 3) Exchanged messages do not reveal the users identity and do not explicitly reveal the plays role information.