Secret key generation with one communicator and a one-shot converse via hypercontractivity
Secret key generation with one communicator and a one-shot converse via hypercontractivity
A new model of multi-party secret key agreement is proposed, in which one terminal called the communicator can transmit public messages to other terminals before all terminals agree on a secret key. A single-letter characterization of the achievable region is derived in the stationary memoryless case. The new model generalizes …