Weaknesses of protocols for updating the parameters of an established threshold scheme
Keith M. Martin, J. Nakahara · IEE Proceedings - Computers and Digital Techniques · 2001
Threshold schemes are adaptable cryptographic primitives that distribute trust in secret data by requiring k out of n entities to co-operate before the data can be recovered. An important security management issue relating to threshold schemes is the problem of updating the parameters of a threshold scheme. The paper discusses serious shortcomings in two proposed protocols for threshold parameter update.