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Issue No. 04 - April (2004 vol. 37)
ISSN: 0018-9162
pp: 28-33
Carlo Blundo , University of Salerno
Stelvio Cimato , University of Salerno
The Internet has become a mainstream, multibillion dollar advertising channel. The popularity mechanisms that rule traditional advertising economics also rule online advertising, but traditional systems for measuring ad exposure are of little value. Even a trusted host site can generate statistics that don't correspond to real usage. <p>Advertisers and auditing companies haven't adopted a standard technique to accurately measure the number of visits a site receives and hence the advertising exposure. A proposed framework based on hash chains minimizes the overhead associated with the additional communication required to implement a counting technique. Testing in a prototype implementation indicates that the framework also guarantees security and nonrepudiation of the produced proof of visits.</p>

C. Blundo and S. Cimato, "A Software Infrastructure for Authenticated Web Metering," in Computer, vol. 37, no. , pp. 28-33, 2004.
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