Security applications of diodes with unique current-voltage characteristics

Ulrich Rührmair, Christian Jaeger, Christian Hilgers, Michael Algasinger, György Csaba, Martin Stutzmann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

24 Scopus citations


Diodes are among the most simple and inexpensive electric components. In this paper, we investigate how random diodes with irregular I(U) curves can be employed for crypto and security purposes. We show that such diodes can be used to build Strong Physical Unclonable Functions (PUFs), Certificates of Authenticity (COAs), and Physically Obfuscated Keys (POKs), making them a broadly usable security tool. We detail how such diodes can be produced by an efficient and inexpensive method known as ALILE process. Furthermore, we present measurement data from real systems and discuss prototypical implementations. This includes the generation of helper data as well as efficient signature generation by elliptic curves and 2D barcode generation for the application of the diodes as COAs.

Original languageEnglish
Title of host publicationFinancial Cryptography and Data Security - 14th International Conference, FC 2010, Revised Selected Papers
Number of pages8
StatePublished - 2010
Externally publishedYes
Event14th International Conference on Financial Cryptography and Data Security, FC 2010 - Tenerife, Canary Islands, Spain
Duration: 25 Jan 201028 Jan 2010

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6052 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference14th International Conference on Financial Cryptography and Data Security, FC 2010
CityTenerife, Canary Islands


  • ALILE Crystallization
  • Certificates of Authenticity
  • Physical Cryptography
  • Physical Unclonable Functions
  • Random Diodes


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