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Realization of SR-Equivalents Using Generalized Shift Registers for Secure Scan Design
Hideo FUJIWARA Katsuya FUJIWARA
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/08/01
Online ISSN: 1745-1361
Type of Manuscript: LETTER
Category: Dependable Computing
design-for-testability, scan design, generalized feedback/feed-forward shift registers, security, scan-based side-channel attack,
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We reported a secure scan design approach using shift register equivalents (SR-equivalents, for short) that are functionally equivalent but not structurally equivalent to shift registers [10 and also introduced generalized shift registers (GSRs, for short) to apply them to secure scan design -. In this paper, we combine both concepts of SR-equivalents and GSRs and consider the synthesis problem of SR-equivalent GSRs, i.e., how to modify a given GSR to an SR-equivalent GSR. We also consider the enumeration problem of SR-equivalent GFSRs, i.e., the cardinality of the class of SR-equivalent GSRs to clarify the security level of the secure scan architecture.