Unconditionally Secure Commitments with Quantum Auxiliary Inputs

ePrint Report: Unconditionally Secure Commitments with Quantum Auxiliary Inputs

Tomoyuki Morimae, Barak Nehoran, Takashi Yamakawa

We show the following unconditional results on quantum commitments in two related yet different models:


1. We revisit the notion of quantum auxiliary-input commitments introduced by Chailloux, Kerenidis, and Rosgen (Comput. Complex. 2016) where both the committer and receiver take the same quantum state, which is determined by the security parameter,
as quantum auxiliary inputs. We show that computationally-hiding and statistically-binding quantum auxiliary-input commitments exist …

barak committer eprint report input inputs notion quantum report results