One of the most recent challenges in communicationsystem and network system is the privacy and security ofinformation and communication session. Blockchain is one oftechnologies that use in sensing application in different importantenvironments such as healthcare. In healthcare the patient privacyshould be protected use high security system. Key agreementprotocol based on lattice ensure the authentication and highprotection against different types of attack especiallyimpersonation and man in the middle attack where the latticebased protocol is quantum-withstand protocol. Proposed improvedframework using lattice based key agreement protocol forapplication of block chain, with security analysis of manyliteratures that proposed different protocols has been presentedwith comparative study. The resultant new framework based onlattice overcome the latency limitation of block chain in the oldframework and lowered the computation cost that depend onElliptic curve Diffie-Hellman. Also, it ensures high privacy andprotection of patientβs informatio
