SipHash algorithm followed (Aumasson & Bernstein, 2012).

Webapp interface with this implementation: https://www.cjxol.com/posts/siphash-calculator/.

1. Aumasson, J.-P., & Bernstein, D. J. (2012). SipHash: A Fast Short-Input PRF. In S. Galbraith & M. Nandi (Eds.), Progress in Cryptology - INDOCRYPT 2012 (pp. 489–508). Springer Berlin Heidelberg.