On the foundations of oblivious transfer

Xiao Qiang Guo, Yan Yan, Hong Wang +1 more

The Oblivious Transfer (OT) is a typical foundation agreement of secure multi-party computations. It can be used to solve the “ Millionaire” interesting question raised by the winner of the Turing Award in 1982, Mr. Yao , thus to build more complex secure multi-party computation protocol or to solve practical problems,such as electronic voting, elections, e-commerce. Using of the quantum channel and the principles of the quantum mechanics , Quantum Oblivious Transfer (QOT) can be solve the classic oblivious transfer problems. QOT can be achieved higher security and higher efficiency than the Classic Oblivious Transfer, while it also has a unique advantage in found eavesdropping. We had given a very novel QOT scheme based on three-particle entangled states. Although the use more particles , the process is better concise.

Yehuda Lindell, Hila Zarosim

Yehuda Lindell, Hila Zarosim

Gilad Asharov, Yehuda Lindell, Thomas H. Schneider +1 more

Protocols for secure computation enable parties to compute a joint function on their private inputs without revealing anything but the result. A foundation for secure computation is oblivious transfer (OT), which traditionally requires expensive public key cryptography. A more efficient way to perform many OTs is to extend a small number of base OTs using OT extensions based on symmetric cryptography.

Zhide Chen

Oblivious transfer(OT)is used as a key component in many applications of cryptography. In this paper, a1-out-of-n oblivious transfer is constructed based on the sub protocol 1-out-of-2 oblivious transfer;an m-out-of-n oblivious transfer is constructed based on the sub protocol 1-out-of-n oblivious transfer. Finally,a1-out-of-2 oblivious transfer is constructed based on public key system. By this way,any existed public key system can be used to construct m-out-of-n oblivious transfer.

Claude Crépeau, Miklós Sántha