CryptoDB
Kemal BICAKCI
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Publications
Year
Venue
Title
2024
CIC
Quantum-Resistance Meets White-Box Cryptography: How to Implement Hash-Based Signatures against White-Box Attackers?
Abstract
<p>The adversary model of white-box cryptography includes an extreme case where the adversary, sitting at the endpoint, has full access to a cryptographic scheme. Motivating by the fact that most existing white-box implementations focus on symmetric encryption, we present implementations for hash-based signatures so that the security against white-box attackers (who have read-only access to data with a size bounded by a space-hardness parameter M) depends on the availability of a white-box secure cipher (in addition to a general one-way function). We also introduce parameters and key-generation complexity results for white-box secure instantiation of stateless hash-based signature scheme SPHINCS+, one of the NIST selections for quantum-resistant digital signature algorithms, and its older version SPHINCS. We also present a hash tree-based solution for one-time passwords secure in a white-box attacker context. We implement the proposed solutions and share our performance results. </p>
Coauthors
- Kemal BICAKCI (1)
- Muhammed Said Gündoğan (1)
- Halis Taha Şahin (1)
- Kemal Ulker (1)
- Yusuf Uzunay (1)