A Non-interactive Public-Key Distribution System

by Ueli M. Maurer , Yacov Yacobi

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Datum	Value	Source
TITLE	A Non-interactive Public-Key Distribution System	user correction - Legacy Corrections
AUTHOR NAME	Ueli M. Maurer	user correction
AUTHOR AFFIL	Dept. of Computer Science; ETH Zürich	user correction
AUTHOR ADDR	CH-8092 Zürich, Switzerland	user correction
AUTHOR NAME	Yacov Yacobi	user correction
AUTHOR AFFIL	Bellcore	user correction
AUTHOR ADDR	445 South St.; Morristown, NJ 07962	user correction
ABSTRACT	An identity-based non-interactive public key distribution system is presented that is based on a novel trapdoor one-way function allowing a trusted authority to compute the discrete logarithms modulo a publicly known composite number m while this is infeasible for an adversary not knowing the factorization of m. Without interaction with a key distribution center or with the recipient of a given message, a user can generate a mutual secure cipher key based solely on the recipient's identity and his own secret key, and subsequently send the message, encrypted with the generated cipher used in a conventional cipher, over an insecure channel to the recipient. In contrast to previously proposed identitybased systems, no public keys, certificates for public keys or other information need to be exchanged and thus the system is suitable for certain applications that do not allow for interaction. The paper solves an open problem proposed by Shamir in 1984.	user correction
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