Binary Information Press
With the more and more applications of MANET (\"Mobile Ad-hoc NETworks\") in civil and military field, it faced so many new problems in security field. Authentication service is the foundation of security Mobile ad hoc networks, mobile users can transfer data securely each other with certificate service. Because, MANET has no centralized control, and wired network's centralized or hierarchy authentication don't fit MANET. The authors consider the use of threshold signatures in MANET. While none of the known threshold RSA signature schemes seems practical enough for realistic use in these highly-constrained environments.