Classical access structures of ramp secret sharing based on quantum stabilizer codes
Abstract
In this paper, we consider to use the quantum stabilizer codes as secret sharing schemes for classical secrets. We give necessary and sufficient conditions for qualified and forbidden sets in terms of quantum stabilizers. Then, we give a Gilbert-Varshamov-type sufficient condition for existence of secret sharing schemes with given parameters, and by using that sufficient condition, we show that roughly 19% of participants can be made forbidden independently of the size of classical secret, in particular when an n-bit classical secret is shared among n participants having 1-qubit share each. We also consider how much information is obtained by an intermediate set and express that amount of information in terms of quantum stabilizers. All the results are stated in terms of linear spaces over finite fields associated with the quantum stabilizers.
- Publication:
-
Quantum Information Processing
- Pub Date:
- January 2020
- DOI:
- 10.1007/s11128-019-2503-3
- arXiv:
- arXiv:1811.05217
- Bibcode:
- 2020QuIP...19....9M
- Keywords:
-
- Secret sharing;
- Quantum error-correcting code;
- Gilbert-Varshamov bound;
- Quantum Physics;
- Computer Science - Cryptography and Security;
- Computer Science - Information Theory
- E-Print:
- Publisher's Open Access PDF with copyright held by the author