(a) Explain why Raya and Hubaux in their paper suggest to use multiple PKI pairs to protect driver privacy. (b) What is a “bogus traffic information” attack? Explain it. Is it carried out by an inside...

(a) Explain why Raya and Hubaux in their paper suggest to use multiple PKI pairs to protect driver privacy. (b) What is a “bogus traffic information” attack? Explain it. Is it carried out by an inside or outside attacker?

(c) Explain how the issue of multiple PKI pairs to a driver all at one time may invite Sybil attacks (one user taking on many different identities at the same time). What damage can a Sybil attack do in a vehicular environment?