Efficient One-Way Secret-Key Agreement and Private Channel Coding via Polarization

* Final gross prices may vary according to local VAT.

Get Access


We introduce explicit schemes based on the polarization phenomenon for the task of secret-key agreement from common information and one-way public communication as well as for the task of private channel coding. Our protocols are distinct from previously known schemes in that they combine two practically relevant properties: they achieve the ultimate rate—defined with respect to a strong secrecy condition—and their complexity is essentially linear in the blocklength. However, we are not able to give an efficient algorithm for code construction.