Symmetric encryption using pre-shared public parameters for a secure TFTP protocol

Advances in the communication technology of embedded systems have led to the situation where nowadays almost all systems should implement security for data safety. trivial file transfer protocol (tftp) has advantages for use in embedded systems due to its speed and simplicity,however without security mechanisms,it is vulnerable to various attacks. as an example,during upgrading of wireless access points (waps),attackers can access the information and modify it,and then install malicious code to interrupt the system. this work proposes security implementation of diffie hellman key exchange in tftp by pre-sharing public parameters that enable two parties to achieve same secret key without the risk of man-in-the-middle (mitm) attacks. the implementation is integrated with compression and encryption methods to significantly reduce computational requirements in tftp communication. © school of engineering,taylor’s university.