CRJul 15, 2015
False shares in verifiable secret sharing with finite field commitments
arXiv:1507.04089v1
AI Analysis
This exposes a security flaw in VSS systems, potentially compromising collaborative secret-keeping protocols.
The paper identified a vulnerability in verifiable secret sharing (VSS) schemes that use finite field commitments, where false secret shares can be fabricated to appear legitimate and prevent decryption key assembly.
Verifiable secret sharing (VSS) is designed to allow parties to collaborate to keep secrets. We describe here a method of fabricating false secret shares that appear to other parties to be legitimate, which can prevent assembly of the decryption key. This vulnerability affects VSS schemes using verification commitments bounded to a finite field.