WebAssembly/wasi-crypto

Use WASI Streams

npmccallum opened this issue · 5 comments

npmccallum commented

WASI streams are beginning to reach a point of maturity. This standard should define how it interacts with streams (if at all).

jedisct1 commented

Good call.

Is there any implementation yet? Especially outside Rust?

sunfishcode commented

There is parsing support for the wit syntax in wit-bindgen, but the canonical ABI implementation is not complete yet.

jedisct1 commented

What we currently have for signatures and symmetric operations is something that can be directly mapped to the traditional NIST init()/update()/finalize() APIs.

But we can add update()/absorb()/squeeze() alternatives that accept a stream handle. That can indeed be useful to emulate OpenSSL BIO objects.

jedisct1 commented

There is parsing support for the wit syntax in wit-bindgen, but the canonical ABI implementation is not complete yet.

witx-codegen doesn't support streams either, so there is some preliminary work to do.

But if we can keep the current interface, and augment it with streams-oriented functions later, that shouldn't be an issue.