We have developed a prototype electronic notary system (CYNOS : CYber NOtary System). CYNOS proves facts by providing the evidence (notary token) of events and/or actions that cou...
The fair exchange problem is key to trading electronic items in systems of mutually untrusted parties. In modern variants of such systems, each party is equipped with a security mo...
Abstract. A blind signature scheme is a protocol for obtaining a signature from a signer such that the signer's view of the protocol cannot be linked to the resulting message-...
In multi-issue negotiations, autonomous agents can act cooperatively to benefit from mutually preferred agreements. However, empirical evidence suggests that they often fail to s...
Most successful online marketplaces today are owned and operated by firms that are themselves traders in the marketplace. This raises significant concerns about the fairness of th...