Module pow

Proof of Work schemes for onion services

Tor supports optional proof-of-work client puzzles, for mitigating denial of service attacks on onion services. This crate implements the specific puzzle algorithms we use, and components for client and service integration.

There is infrastructure to support new algorithms over time, but right now only a single algorithm is defined, named v1 and implemented via the equix crate.

Specification at: https://spec.torproject.org/hspow-spec/index.html

Modules

err 🔒

Combined error types for any proof of work scheme

v1

v1 client puzzle using equix

Enums

Error

Error type for the onion service proof of work subsystem

RuntimeError

Detailed runtime errors

SolutionError

Detailed errors for ways a solution can fail verification