A quantum oblivious transfer protocol

2013 ◽  
Author(s):  
Abhishek Parakh
Keyword(s):  
Oblivious Transfer ◽  
Quantum Oblivious Transfer ◽  
Transfer Protocol

scholarly journals Lower bounds for quantum oblivious transfer

2013 ◽  
Vol 13 (1&2) ◽  
pp. 158-177
Author(s):  
Andre Chailloux ◽  
Iordanis Kerenidis ◽  
Jamie Sikora
Keyword(s):  
Lower Bounds ◽  
Oblivious Transfer ◽  
Information Theoretic ◽  
Quantum Bit ◽  
Bit Commitment ◽  
Information Theoretic Security ◽  
Quantum Oblivious Transfer ◽  
Open Question ◽  
Bounded Below ◽  
Transfer Protocol

Oblivious transfer is a fundamental primitive in cryptography. While perfect information theoretic security is impossible, quantum oblivious transfer protocols can limit the dishonest player's cheating. Finding the optimal security parameters in such protocols is an important open question. In this paper we show that every 1-out-of-2 oblivious transfer protocol allows a dishonest party to cheat with probability bounded below by a constant strictly larger than $1/2$. Alice's cheating is defined as her probability of guessing Bob's index, and Bob's cheating is defined as his probability of guessing both input bits of Alice. In our proof, we relate these cheating probabilities to the cheating probabilities of a bit commitment protocol and conclude by using lower bounds on quantum bit commitment. Then, we present an oblivious transfer protocol with two messages and cheating probabilities at most $3/4$. Last, we extend Kitaev's semidefinite programming formulation to more general primitives, where the security is against a dishonest player trying to force the outcome of the other player, and prove optimal lower and upper bounds for them.

scholarly journals On the existence of loss-tolerant quantum oblivious transfer protocols

2012 ◽  
Vol 12 (7&8) ◽  
pp. 609-619
Author(s):  
Jamie Sikora
Keyword(s):  
Quantum Communication ◽  
Oblivious Transfer ◽  
Classical Communication ◽  
Cryptographic Primitive ◽  
Quantum Oblivious Transfer ◽  
Better Than ◽  
Transfer Protocol

Oblivious transfer is the cryptographic primitive where Alice sends one of two bits to Bob but is oblivious to the bit received. Using quantum communication, we can build oblivious transfer protocols with security provably better than any protocol built using classical communication. However, with imperfect apparatus, one needs to consider other attacks. In this paper, we present an oblivious transfer protocol which is impervious to lost messages.

scholarly journals A Privacy-Preserving Method Based on Server-Aided Reverse Oblivious Transfer Protocol in MCS

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 164667-164681
Author(s):  
Hao Long ◽  
Shukui Zhang ◽  
Yang Zhang ◽  
Li Zhang ◽  
Jin Wang
Keyword(s):  
Oblivious Transfer ◽  
Privacy Preserving ◽  
Transfer Protocol

Practical Server-Aided k-out-of-n Oblivious Transfer Protocol

2016 ◽  
pp. 261-277
Author(s):  
Xiaochao Wei ◽  
Chuan Zhao ◽  
Han Jiang ◽  
Qiuliang Xu ◽  
Hao Wang
Keyword(s):  
Oblivious Transfer ◽  
Transfer Protocol

Quantum Oblivious Transfer

1994 ◽  
Vol 41 (12) ◽  
pp. 2445-2454 ◽  
Author(s):  
Claude Crépeau
Keyword(s):  
Oblivious Transfer ◽  
Quantum Oblivious Transfer
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