This repo has a handful of APIs to create and verify RFC 9102 proofs.

It has minimal dependencies (bitcoin_hashes for hashing operations, hex_lit for
some hex constants, and optionally tokio for networking in some APIs).

There are numerous APIs present:
 * Building the crate as a library provides a handful of DNS types, including
   (de)serialization for them.
 * Building the crate as a library with the `validation` feature also enables
   the `validation` module, which allows for verification of an RFC 9102 proof.
 * Building the crate as a library with the `std` feature enables the `query`
   module which can build an RFC 9102 proof using repeated queries to any
   standard DNS server (including over DoH).
 * The `wasmpack` directory and `uniffi` directory expose very simplified APIs
   to build and verify RFC 9102 proofs either in WASM (via wasm-pack, see-also
   the `wasmpack/doh_lookup.js` file which can build RFC 9102 proofs using
   repeated queries to a DoH server directly from JavaScript) or any language
   supported by `uniffi`.
 * Building the the `http_proof_gen` binary in the crate builds an HTTP server
   which responds to requests for RFC 9102 proofs in the form
   `/dnssecproof?d=domain&t=rr_type`, returning the binary proof containing and
   proving the Resource Record of type `rr_type` at `domain`.

The `slower_smaller_binary` feature slows proof validation down by 50%+ for a
very marginal reduction in binary size, but those who are extremely binary size
constrained may still find it useful.

See https://docs.rs/dnssec-prover for full API details on the Rust API.
There's also a website which demonstrates the WASM build of this crate at
https://http-dns-prover.as397444.net/ which allows for making validated queries.