Secure and reliable key agreement with physical unclonable functions
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Different transforms used in binding a secret key to correlated physical-identifier outputs are compared. Decorrelation efficiency is the metric used to determine transforms that give highly-uncorrelated outputs. Scalar quantizers are applied to transform outputs to extract uniformly distributed bit sequences to which secret keys are bound. A set of transforms that perform well in terms of the decorrelation efficiency is applied to ring oscillator (RO) outputs to improve the uniqueness and reliability of extracted bit sequences, to reduce the hardware area and information leakage about the key and RO outputs, and to maximize the secret-key length. Low-complexity error-correction codes are proposed to illustrate two complete key-binding systems with perfect secrecy, and better secret-key and privacy-leakage rates than existing methods. A reference hardware implementation is also provided to demonstrate that the transform-coding approach occupies a small hardware area.
Details
Original language | English |
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Article number | 340 |
Journal | Entropy |
Volume | 20 |
Issue number | 5 |
Publication status | Published - 3 May 2018 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
ORCID | /0000-0002-1702-9075/work/165878285 |
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Keywords
ASJC Scopus subject areas
Keywords
- Hardware implementation, Key agreement, Physical unclonable functions, Privacy leakage, Transform coding