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U.S. Department of
Transportation
Research and Innovative
Technology Administration
Advantages
and Limitations of the Approach
§Advantages:
□Meets objectives of providing trusted, anonymous
messages using random identifiers
that are changed every five minutes
□Is scalable to 250+ million users
□Supports crash avoidance safety applications
□Many attacks are only feasible with a significant
amount of investment and expertise about the system
□Approach prevents/mitigates against harm to the
system
§Limitations:
□No instantaneous identification of misbehaving actors;
delay in identification and delay in removing misbehaving actors from system
□Splitting the certificate management entity may have
cost implications
□Need frequent updates of certificates; as of now, our
approach limits updates to driving by a roadside unit (RSE) as other options have
significant challenges
□Approach does not address system backhaul (RSE)
connections
