| Summary: | 碩士 === 中原大學 === 電機工程學系 === 88 === In this thesis, we design several new oblivious transfer protocols. These new protocols include fundamental oblivious transfer protocols, 1-2 oblivious transfer protocols, and extension of the fundamental and 1-2 oblivious transfer protocols.
For the fundamental oblivious transfer protocols, we design three new schemes which are based on RSA, Rabin’s cryptosystems and discrete logarithm, respectively. We also design three protocols for 1-2 oblivious transfer. These protocols are based on RSA, Rabin’s cryptosystems and discrete logarithm, individually. Each of them has high security that protects information against cryptanalyzing by the intruders.
Besides, we also design new protocols for the extension of fundamental oblivious transfer. They include the 1-t and the 2-t oblivious transfer, the interactive fundamental oblivious transfer and secrets exchanging for multi-user. In this thesis, two new protocols of the interactive fundamental oblivious transfer and two secrets exchanging protocols for multi-user are proposed based on RSA and Rabin’s cryptosystems, respectively. All of them have the advantages of simple process and quick decrypting.
There are four results provided in our thesis as follows:
1. We propose three new protocols for the fundamental oblivious transfer. 2. We propose three new protocols for the 1-2 oblivious transfer.
3. We extend some of these protocols to the 1-t, 2-t and present two new protocols for the interactive oblivious transfer.
4. We propose two secret exchanging protocols for multi-user.
It is believed that the results of our study in this thesis will be much helpful for the future research in the area of oblivious transfer protocols.
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