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Journal of Inforamtion Science and Engineering, Vol.17 No.3, pp.525-529 (May 2001)

New Multistage Secret Sharing Scheme Based on Factorization Problem


Narn-Yih Lee and Tzonelih Hwang Applied English Department
Southern Taiwan University of Technology
Tainan, Taiwan 710, R.O.C.
*Institute of Information Engineering
National Cheng-Kung Unviersity
E-mail: hwangtl@server2.iie.ncku.edu.tw

An efficient multistage (t, n) secret sharing scheme is proposed. The scheme allows a group of users to share multiple secrets, and only one secret share needs to be kept by each user. Knowing the exposed secrets will not affect the security of the other secrets not yet revealed. Moreover, only one public value is needed in the proposed scheme.

Keywords: cryptography, data privacy, secret sharing, factorization problem, Lagrange interpolation polynomial

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Received October 14, 1998; revised February 9, 1999; accepted May 21, 1999.
Communicated by Chi Sung Laih