Security protocols for vehicular networks should take into account their specific characteristics such as high mobility and requirements such as trust (vehicles should be able to trust the received messages), resiliency (for interference), and efficiency (e.g., ability to authenticate message in real time).
Our objective is to design an authentication mechanism that allows and to securely authenticate messages from using a computationally efficient algorithm that expends low node energy.
Sun Microsystems senior staff engineer Hans Eberle and his team at Sun Labs are addressing that problem by creating a microprocessor that can be plugged into network computers to quickly authenticate messages from a range of wireless gadgets.
With the security modules and secret keys, various security attacks can be launched via authenticated messages.
This would allow to use element of its own hash chain to authenticate messages purportedly generated by.
The attacker gains information from the VM's migrating memory (e.g., passwords, keys, application data, capturing packets that are already authenticated, messages that have sensitive data will be overheard, etc).
With the identified model, it is possible to obtain the watermark and, finally, using it to authenticate messages with the aim of driving the system to an undesired state.
This example can be extended to illustrate the second basic function of cryptography, providing a means for B to assure himself that an instruction has actually come from A and that it is unaltered i.e., a means of authenticating the message.
Figure 17 shows how much energy is consumed for authenticating varying message sizes.
During the above process, since Sn does not authenticate the user, Sn directly generates authenticating request message for GW to authenticate the user.
Here is equal to the number of unique MAC keys that expects to use for authenticating its messages.
