New Authenticated Key Exchange Scheme Based on Ring Learning with Errors Problem
Xiaopeng Yang, Wenping Ma, Chengli Zhang · 2015
Using the hard assumption of Ring-Decision Learning With Errors (Ring-DLWE) in the lattice, a new Authenticated Key Exchange (AKE) scheme is proposed, which is based on the Peikert's reconciliation technique. Under the standard model, the proposed scheme is provably secure in the CK model, which is additionally achieves weak Perfect Forward Secrecy (wPFS). Compared with the current Key Exchange (KE) schemes based on the LWE, the proposed scheme not only protects the shared session key with balanced key derivation function but also resists quantum attacks because of the hard assumption on lattice problem.