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A self-certified group-oriented cryptosystem without a combiner

par Saeednia, Shahrokh ;Ghodosi, Hossein
Référence Lecture notes in computer science, 1587, page (192-201)
Publication Publié, 1999

Article révisé par les pairs

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Résumé :

In a (t,n) group-oriented cryptosystem, collaboration of at least t participants is required to perform the group transformation. Two important issues in implementation of a such cryptosystems are: 1. the sender needs to collect authenticated public keys of the intended receivers; 2. the combiner needs a secure channel to collect (privately) the partial results from collaborating participants. This paper discusses the above problems and proposes a (t,n) group-oriented cryptosystem that works with self-certified public keys, with no help of any combiner.