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Differential Power Analysis

How to build cryptosystems that can operate securely in existing hardware that leaks information.

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Authors Paul Kocher, Joshua Jaffe, and Benjamin Jun

Cryptosystem designers frequently assume that secrets will be manipulated in closed, reliable computing environments. Unfortunately, actual computers and microchips leak information about the operations they process. This paper examines specific methods for analyzing power consumption measurements to and secret keys from tamper resistant devices. We also discuss approaches for building cryptosystems that can operate securely in existing hardware that leaks information.

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