Companies themselves can test for the kinds of side-channel attacks Cryptography Research will be identifying in leaky crypto, and much of the main defense really boils down to one thing: better math. "It boils down to doing the math differently," says Rohatgi, saying there are subtle tricks such as introducing noise into the side channel so that even if the information leaks, it doesn't have value to an attacker.
Ellen Messmer is senior editor at Network World, an IDG publication and website, where she covers news and technology trends related to information security. Twitter: MessmerE. E-mail: firstname.lastname@example.org.
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