Method and system for linear key agreement with forward confidentiality using non secure shared communication medium

摘要

A method for shared secret agreements with forward confidentiality is to use a first plurality of data bits using a cryptographically secure pseudo-random number generator that applies to the node seed value and at least one index value. And transmitting the first plurality of data bits at the same time as transmitting the second plurality of data bits from the second node via the shared communication medium, and transmitting the second plurality of data bits at the same time. Identifying the shared secret data by the second node using a portion of the first plurality of data bits, which is the logical complement of, and the cryptographically secure one-way applied to the shared secret data. Use the function to generate a shared seed value and the cryptographically secure one-way function applied to the node seed value to generate an updated node seed value and the node seed value. To replace and include.