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2019•Scientific Bulletin of Naval AcademyOpen access

Hashing and Message Authentication Code Implementation. An Embedded Approach

Marius Rogobete

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Abstract

There are different methods by which a message hashing could be embedded in a communications network, therefore different approaches are described in this research to protect the hash value of a message. The structure of a cryptographically secure function (SHA-512) is presented along with the low-level algorithm sequence. Subsequently is detailed the Hash-based Message Authentication Code (HMAC) produced by concatenating a secret key and message, after which the composite message is hashed. However, the HMAC numerical structure and the specific operating algorithm are explained in detail to the logical gate level. Finally, several considerations regarding the low-level implementation of the code are concluded.

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What this paper is about

There are different methods by which a message hashing could be embedded in a communications network, therefore different approaches are described in this research to protect the hash value of a message. The structure of a cryptographically secure function (SHA-512) is presented along with the low-level algorithm sequence. Subsequently is detailed the Hash-based Message Authentication Code (HMAC) produced by concatenating a secret key and message, after which the composite message is hashed. However, the HMAC numerical structure and the specific operating algorithm are explained in detail to the logical gate level. Finally, several considerations regarding the low-level implementation of the code are concluded.

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Available abstract

There are different methods by which a message hashing could be embedded in a communications network, therefore different approaches are described in this research to protect the hash value of a message. The structure of a cryptographically secure function (SHA-512) is presented along with the low-level algorithm sequence. Subsequently is detailed the Hash-based Message Authentication Code (HMAC) produced by concatenating a secret key and message, after which the composite message is hashed. However, the HMAC numerical structure and the specific operating algorithm are explained in detail to the logical gate level. Finally, several considerations regarding the low-level implementation of the code are concluded.

Key concepts: Hash-based message authentication code, Hash function, Message authentication code, Message broker, Computer science, Code (set theory), Authentication (law), Cryptographic hash function

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