"Something needs to change for the trust to be better," he says. "We need to build a community that says these are trustworthy or not."
Because the notary models would require worldwide deployment of infrastructure, an actual rollout could be done but it would be a major project. "It's bigger than it should be because it's 16 years late," Elgamal says.
Read more about wide area network in Network World's Wide Area Network section.