| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
In order to discuss the quantum communication complexity of several problems, we propose efficient protocols for secure database search based on homomorphic encryption for comparison. In addition, we have computational experiments to verify the effectiveness of our proposals. We have a new result with respect to quantum blind computation. We devise an information-theoretic mechanism where a third-party can arbitrate between a client and a server if one party is cheating and incorporate the mechanism into quantum blind computation.
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