IACR News item: 27 June 2020
Ehsan Ebrahimi, Céline Chevalier, Marc Kaplan, Michele Minelli
In this note, we study the security of oblivious transfer protocols in the presence of adversarial
superposition queries. We define a security notion for the sender against a corrupted receiver
that makes a superposition query. We present an oblivious transfer protocol that
is secure against a quantum receiver restricted to a classical query but it is insecure
when the receiver makes a quantum query.
In addition, we present an OT protocol that resists to the attack presented in this paper.
However, we leave presenting a security proof for this protocol
as a direction for the future work.
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