Computational Aspects of Ideal (t, n)-Threshold Scheme of Chen, Laing, and Martin
Author | Punekar, Mayur |
Author | Malluhi, Qutaibah |
Author | Desmedt, Yvo |
Author | Wang, Yongee |
Available date | 2024-07-17T07:14:50Z |
Publication Date | 2018 |
Publication Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
Resource | Scopus |
Identifier | http://dx.doi.org/10.1007/978-3-030-02641-7_22 |
ISSN | 3029743 |
Abstract | In CANS 2016, Chen, Laing, and Martin proposed an ideal (t, n)-threshold secret sharing scheme (the CLM scheme) based on random linear code. However, in this paper we show that this scheme is essentially same as the one proposed by Karnin, Greene, and Hellman in 1983 (the KGH scheme) from privacy perspective. Further, the authors did not analyzed memory or XOR operations required to either store or calculate an inverse matrix needed for recovering the secret. In this paper, we analyze computational aspects of the CLM scheme and discuss various methods through which the inverse matrix required during the secret recovery can be obtained. Our analysis shows that for n≤ 30 all the required inverse matrices can be stored in memory whereas for 30 ≤ n< 9000 calculating the inverse as and when required is more appropriate. However, the CLM scheme becomes impractical for n> 9000. Another method which we discuss to recover the secret in KGH scheme is to obtain only the first column of the inverse matrix using Lagrange's interpolation however, as we show, this method can not be used with the CLM scheme. Some potential application of the secret sharing schemes are also discussed. From our analysis we conclude that the CLM scheme is neither novel nor as practical as has been suggested by Chen et al. whereas the KGH scheme is better suited for practical applications with large n. |
Sponsor | Acknowledgment. This publication was made possible by the NPRP award NPRP8-2158-1-423 from the Qatar National Research Fund (a member of The Qatar Foundation). The statements made herein are solely the responsibility of the authors. |
Language | en |
Publisher | Springer |
Subject | Cryptography Matrix algebra Network security Recovery Computational aspects Inverse matrix Lagrange Random linear codes Secret sharing schemes Threshold schemes Threshold secret sharing XOR operation Inverse problems |
Type | Conference Paper |
Pagination | 470-481 |
Volume Number | 11261 LNCS |
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