Two non-interactive key agreement protocols under certificateless scenarios

Key agreement protocol is one of the fundamental primitives of cryptography. It allows two or more parties to establish secret keys securely in the presence of an eavesdropping adversary. In this paper, two certificateless non-interactive key agreement protocols were proposed under certificateless scenarios, which have obvious advantages in the amount of computation and communication. We perform a security analysis of the schemes. We also show that the second protocol can be used to establish keys between members of distinct domains (under different KGCs). The proposed schemes can be used to construct secret sharing scheme.