Yes, the default implementation of hashing in Rust is designed to be cryptographically-safe at the expense of speed. You can get a large speedup by replacing it

Yes, the default implementation of hashing in Rust is designed to be cryptographically-safe at the expense of speed. You can get a large speedup by replacing it, e.g. https://nnethercote.github.io/perf-book/hashing.html https://nnethercote.github.io/perf-book/hashing.html .