({1, 3}, n) Hierarchical Secret Sharing Scheme Based on XOR Operations for a Small Number of Indispensable Participants. - Koji Shima; Hiroshi Doi (AsiaJCIS, 2016)

A Hierarchical Secret Sharing Scheme over Finite Fields of Characteristic 2. - Koji Shima; Hiroshi Doi (J. Inf. Process., 2017)

A Hierarchical Secret Sharing Scheme Based on Information Dispersal Techniques. - Koji Shima; Hiroshi Doi (ICISC, 2018)

XOR-Based Hierarchical Secret Sharing Scheme. - Koji Shima; Hiroshi Doi (IWSEC, 2018)

New Proof Techniques Using the Properties of Circulant Matrices for XOR-based (k, n) Threshold Secret Sharing Schemes. - Koji Shima; Hiroshi Doi (J. Inf. Process., 2021)

Hierarchical Secret-Sharing Scheme Based on XOR Operations. - Koji Shima; Hiroshi Doi (J. Inf. Process., 2024)