A Secure Identity-Based Three-Party Authenticated Key Agreement Protocol Using Bilinear Pairings

The modern Internet technology era requires secure key agreement protocols, which are playing a significant role in the field of cryptography and network security. These protocols are mainly designed to establish a common session key between different parties. It can be easily found that various key agreement protocols are designed in the literature. However, many of these protocols are either proven insecure or have a burden of communication and computational cost. Therefore, a more secure key agreement protocol is needed. This paper exhibits an identity-based three-party authenticated key agreement (ID-3PAKA) protocol is devised, which securely and efficiently negotiates a common secret session key among three parties over the Internet. This protocol is based on the elliptic curve cryptography (ECC). It uses the idea of identity-based encryption (IBE) with bilinear pairings. The security of the proposed work is based on the hardness assumption of the discrete logarithm problem (DL) and elliptic curve. Further, we show that the proposed protocol ensures the known security properties of the session key.