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The MAELSTROM-0 Hash Function

In this paper we present MAELSTROM-0, an evolution of the WHIRLPOOL hash function with variable output length up to 512 bits. As its predecessor, MAELSTROM-0 is not oriented towards any particular platform, but its implementation flexibility facilitates exploiting the features of each underlying environment. On the other hand, the improved design of MAELSTROM-0 makes it faster and arguably more robust than its predecessor and other existing hash functions. By incorporating the state-of-the-art in the design of cryptographically secure hash functions, MAELSTROM-0 not only constitutes a new primitive per se, but also provides an initial assessment on what the minimum requirements for NIST’s “Advanced Hash Standard” might be, and might serve as a valuable comparison tool for future AHS proposals in terms of security, efficiency, and flexibility.