Interactive aggregate message authentication equipped with detecting functionality from adaptive group testing

Abstract

In this paper, we propose a formal security model and a construction methodology of interactive aggregate message authentication codes with detecting functionality (IAMDs). The IAMD is an interactive aggregate MAC protocol which can identify invalid messages with a small amount of tag-size. Several aggregate MAC schemes that can detect invalid messages have been proposed so far by using non-adaptive group testing in the prior work. In this paper, we utilize adaptive group testing to construct IAMD scheme, and we show that the resulting IAMD scheme can identify invalid messages with a small amount of tag-size compared to the previous schemes. To this end, we give the formalization of adaptive group testing and IAMD, and propose a generic construction starting from any aggregate MAC and any adaptive group testing method. In addition, we compare instantiations of our generic constructions, in terms of total tag-size and several properties. Furthermore, we show advantages of IAMD by implementing constructions of (non-)adaptive aggregate message authentication with detecting functionality and comparing these ones in terms of the data-size and running time of verification algorithms.