| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
We formalize and verify the forward security (which guarantees the secrecy of the session key after revealing static private keys) of LINE encryption as a representative end-to-end encryption scheme and find a new explicit attack.
Also, we evaluate the security of an authentication protocol between IC-card reader/writer as a practical scheme related to end-to-end encryption and clarify vulnerability when the session key generated in an authentication session is used in other external systems.
Moreover, we construct ID-based and certificateless group key exchange protocols secure in asynchronous networks.
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