Authentication protocol with privacy protection ensuring receipt-freeness, coersion-resistance and deniability
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- Ueshige Yoshifumi
- Principal Investigator
- 長崎大学
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- 櫻井 幸一
- Co-Investigator
- 九州大学
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- 穴田 啓晃
- Co-Investigator
- 長崎県立大学
About this project
- Japan Grant Number
- JP18K11297
- Funding Program
- Grants-in-Aid for Scientific Research
- Funding organization
- Japan Society for the Promotion of Science
- Project/Area Number
- 18K11297
- Research Category
- Grant-in-Aid for Scientific Research (C)
- Allocation Type
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- Multi-year Fund
- Review Section / Research Field
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- Basic Section 60070:Information security-related
- Research Institution
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- Nagasaki University
- Project Period (FY)
- 2018-04-01 〜 2023-03-31
- Project Status
- Completed
- Budget Amount*help
- 4,160,000 Yen (Direct Cost: 3,200,000 Yen Indirect Cost: 960,000 Yen)
Research Abstract
The purpose of this study is to construct an authentication protocol with receipt-freeness, coercion-resistance, and deniability. The main achievements are as follows. (1) As an authentication mechanism using encryption that simultaneously realizes anonymity and invalidation, we proposed a predicate authentication scheme that ensures anonymity and deniability with a revocation function. (2) We evaluated 11 studies on the receipt-freeness and coercion-resistance of electronic voting using blockchain techniques. In many of them, although there is an argument for receipt-freeness, it has been found that it is difficult to guarantee the coercion resistance. (3) The receipt-freeness and coercion-resistance of authentication were defined based on evidentiary information in authentication protocols. Furthermore, to define it appropriately, we proposed scenarios in which legitimate users can be forced to perform authentication acts for biometric authentication.
