Abstract- The NMAC structure and the variant HMAC was proposed by Mihir Bellare, Ran Canetti and HugoKrawczy in 1996 ([1]). However, the HMAC structure was only expressed with some related comments and it was not proved until now. In this paper, we assess the safety model NMAC follow Hash-then-MAC constructions’s approach and provide a different hypothesis for the compression function to give detailed proof for the security of HMAC.
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Tài liệu tham khảo [1]. Bellare, M., R. Canetti, and H. Krawczyk, “Keying hash functions for message authentication”. in Annual International Cryptology Conference, Springer, 1996. [2]. Katz, J. and Y. Lindell, “Introduction to modern cryptography” CRC press, 2014. [3]. Bellare, M. and P. Rogaway, “Introduction to modern cryptography”, Ucsd Cse, 2005. [4]. Bellare, M, “New proofs for NMAC and HMAC: Security without collision-resistance”. in Annual International Cryptology Conference. Springer, 2006. |
