Efficient Identity-Based and Authenticated Key Agreement Protocol
This work addresses security gaps in key agreement protocols for cryptographic applications, though it appears incremental as it builds on existing pairing-based methods.
The authors tackled the problem of designing a secure identity-based and authenticated key agreement protocol by proposing IDAK, which uses Weil/Tate pairing and is proven secure in the Bellare-Rogaway model, with additional properties verified separately.
Several identity based and implicitly authenticated key agreement protocols have been proposed in recent years and none of them has achieved all required security properties. In this paper, we propose an efficient identity-based and authenticated key agreement protocol IDAK using Weil/Tate pairing. The security of IDAK is proved in Bellare-Rogaway model. Several required properties for key agreement protocols are not implied by the Bellare-Rogaway model. We proved these properties for IDAK separately.