Secret Swarm Unit Reactive k-Secret Sharing (Extended Abstract)

摘要

Secret sharing is a basic fundamental cryptographic task. Motivated by the virtual automata abstraction and swarm computing, we investigate an extension of the k-secret sharing scheme, in which the secret components are changed on the fly, independently and without (internal) communication, as a reaction to a global external trigger. The changes are made while maintaining the requirement that k or more secret shares may reveal the secret and no k - 1 or fewer reveal the secret.The application considered is a swarm of mobile processes, each maintaining a share of the secret which may change according to common outside inputs e.g., inputs received by sensors attached to the process.The proposed schemes support addition and removal of processes from the swarm as well as corruption of a small portion of the processes in the swarm.