Securing electronic devices against side channel attacks.
Smartphones, tablets and other mobile devices con- tain cryptographic keys that protect payments, VPN/network connections and on-device flash memory. Although some smartphones and other devices contain countermeasures, many do not and can be easily compromised. Even a simple radio can tune into the radio frequency emissions from mobile devices and gather side channel information. In some cases, secret keys can be recovered from a single transaction performed by a device several feet away.
To read more, click http://www.rambus.com/assets/documents/papers/DPA-Countermeasures-Protecting-Electronic-Devices-fact-sheet.pdf.
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