Author's Latest Posts


Scaling Anti-Tamper Protection To Meet Escalating Threats


Anti-tamper tends to be one of those catchall phrases encompassing any countermeasure on a security chip. A more precise definition would be that anti-tamper protection is any collection of countermeasures that serves to thwart an adversary’s attempt to monitor or affect the correct operation of a chip or a security core within a chip. Given that, it can be useful to think about a hierarchy o... » read more

Putting A Hardware Root-of-Trust To Work In An Anti-Counterfeiting IC


An anti-counterfeiting security IC is conceptually rather simple: during manufacture, it is securely programmed with some secret data. Then during operation, it can prove to a verifying host that it knows that secret data. This “proof of knowledge” is often all that can be expected of a low-cost security IC. This prove-you-know-the-secret authentication process between the security IC an... » read more