A Study on Combinatorial Traitor Tracing Schemes for Broadcast Encryption

Research Project

Project/Area Number	21K13830
Research Category	Grant-in-Aid for Early-Career Scientists
Allocation Type	Multi-year Fund
Review Section	Basic Section 12030:Basic mathematics-related
Research Institution	Kyushu University
Principal Investigator	顧玉杰九州大学, システム情報科学研究院, 助教 (50898731)
Project Period (FY)	2021-04-01 – 2024-03-31
Project Status	Granted (Fiscal Year 2021)
Budget Amount *help	¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000) Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000) Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000) Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords	Broadcast Encryption / Traitor Tracing / Key Assignment Scheme / Combinatorial Method / Identifying Algorithm
Outline of Research at the Start	Digital media plays a key role in our daily life. Protection against digital content copyright violation is an important but difficult challenge. The traitor tracing method provides an effective way to resist collusion attacks of illegal key redistribution for broadcast encryption. The objective of this project is to analyze and construct traitor tracing key assignment schemes using combinatorial methods, and to build efficient tracing algorithms by virtue of coding-theoretic techniques.