Using Improved d-HMAC for Password Storage

Mohannad Najjar


Password storage is one of the most important cryptographic topics through the time. Different systems use distinct ways of password storage. In this paper, we developed a new algorithm of password storage using dynamic Key-Hashed Message Authentication Code function (d-HMAC). The developed improved algorithm is resistant to the dictionary attack and brute-force attack, as well as to the rainbow table attack. This objective is achieved by using dynamic values of dynamic inner padding d-ipad, dynamic outer padding d-opad and user’s public key as a seed.

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Computer and Information Science   ISSN 1913-8989 (Print)   ISSN 1913-8997 (Online)  Email:

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