A key agreement or distribution protocol is a set of communication rules whereby two users can establish a shared common key The shared key can be used by the users in future secure communications We analyze a key agree ment protocol presented by Leighton and Micali at the CRYPTO conference which is based on tamper proof hardware and show that the protocol fails in that a common key shared betw...

The reliable execution of mobile agents is a very important design issue in building mobile agent systems and many fault-tolerant schemes have been proposed so far. Security is a major problem of mobile agent systems, especially when monetary transactions are concerned. Security for the partners involved is handled by encryption methods based on a public key authentication mechanism and by secr...