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How Next-Generation Security ICs Deliver a Stronger Level of Protection
Summary This paper presents the utilization of a physically unclonable function (PUF) as a secure peripheral to IC-level cryptographic circuitry. The unobservable characteristics of a PUF make it an ultimate weapon against invasive and reverse engineering attacks that threaten cryptographic ICs. The paper will also introduce next-generation security ICs that feature the PUF technology. Abstract An IC-based physically unclonable function (PUF) has desirable properties that can be utilized by chips that implement cryptographic functionality. A new PUF semiconductor solution takes advantage of the random analog characteristics of MOSFET transistors, the fundamental building block of CMOS ICs. The PUF is constructed from an analog circuit element with known I-V characteristics that exhibit random variation. At the IC level, the PUF solution is constructed from an array of these elements sized according to the number of bits required to achieve the cryptographic requirements of the IC. When needed, the PUF is operated to derive a per-chip random and unique binary value that is only accessible by IC crypto blocks. For a PUF output to be used as a cryptographic key value, it must be highly reliable and have appropriate crypto quality. This new PUF solution has demonstrated the ability to satisfy both requirements. This paper will present the high-level architecture of the new PUF technology, reliability and crypto quality results, and third-party data revealing the PUF’s protection against invasive attacks and reverse engineering on ICs. Finally, the paper will share cryptographic IC use cases, including an overview of the first commercially available secure authentication IC with this type of PUF technology.
--- Datum: 01.03.2018 Uhrzeit: 12:00 Uhr - 12:30 Uhr Ort: Conference Counter NCC Ost