Comment on “Bit-string oblivious transfer based on quantum state computational distinguishability”
Guang Ping He · Physical Review A · 2015
We show that in the protocol proposed in Phys. Rev. A 91, 042306 (2015), a dishonest sender can always ensure with certainty that the receiver fails to get the secret message. Thus the security requirement of oblivious transfer is not met. This security problem also makes the protocol unsuitable for serving as a building block for 1-out-of-2 oblivious transfer.