| Autor: |
Rainer Kokozinski, Stefan Dreiner, Alexander Stanitzki, Julia Hauser, Holger Vogt, Holger Kappert, Qi Zhang, Benjamin Willsch, Kai-Uwe Muller |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Popis: |
Physically Unclonable Functions (PUFs) offer enticing possibilities to incorporate hardware-based security on semiconductor device level. In order to make efficient use of PUF functionality in lightweight cryptographic applications, a low-overhead implementation in terms of chip area and power consumption is required. In this paper a fully differential readout circuit is proposed that allows the generation of multiple bits from selected pairs of PUF-elements. The IC-design and working principle are explained on basis of a critically-sized nMOS transistor array serving as a PUF-primitive. First results obtained from circuit simulations and wafer-level measurements of 30 PUF-instances fabricated in a 0.35µm CMOS technology are presented. Evaluation of the intra- and inter-Hamming distance with average values of 9.42% and 49.46%, respectively, shows that device identification based on the extracted keys is feasible. In order to increase the number of unique keys obtainable for each PUF-instance layout improvements in form of additional row select connections are proposed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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