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### Parallel HAIFA Hashing Algorithm Based on Lorenz Chaos

#### Author(s)

Yuanyi Liu 1, Xin Zhou 2, Ge Liu 2

#### Affiliation(s)

1 School of Electronic and Electrical Engineering, Lingnan Normal University, Zhanjiang 524048, China
2 School of Electronic and Information Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China

Yuanyi Liu

#### ABSTRACT

Aiming at the inefficiency under parallel environment or large data computation, HAIFA hash function based on Lorenz chaos is constructed in parallel, and a parallel hash function based on Lorenz chaos is proposed. The algorithm compresses each message block independently and can be executed concurrently. After the hash value of each message block is obtained, every two hash values are combined. The odd-numbered rounds are combined with modular addition and right loop operation, while the even-numbered rounds are combined with XOR and left loop operation. The difference of each round of operation further enhances the anti-collision and anti-forgery attacks of the algorithm. The new parallel algorithm is tested for safety analysis and efficiency. The results show that the parallel modified algorithm has good performance and high efficiency, which has certain reference significance for the safety construction of parallel chaotic hash algorithm.

#### KEYWORDS

hash function, Lorenz chaotic system, Parallel structure, HAIFA iterative structure

#### CITE THIS PAPER

Yuanyi Liu, Xin Zhou, Ge Liu. Parallel HAIFA Hashing Algorithm Based on Lorenz Chaos. Advances in Computer, Signals and Systems (2021) 5: 98-106. DOI: http://dx.doi.org/10.23977/acss.2021.050116.

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