Comment by bri3d
17 days ago
Looking more closely, it looks like there are some "North" sides (platforms) with ABI shims (currently Linux and OP-TEE), but others (Windows, for example), would still require recompilation.
> If you have to recompile, you might as well choose to recompile to WASM+WASI.
I disagree here; this ignores the entire swath of functionality that an OS or runtime provides? Like, as just as an example, I can't "just recompile" my OP-TEE TA into WASM when it uses the KDF function from the OP-TEE runtime?
I had previous experience with WASM on TEE. Just use the foreign function interface. Remember WASM isn’t native code so you still need other native code to run WASM (such as wasmtime), and you can import other native functions into WASM through the runtime.
Native functions that are no longer sandboxed, defeating the whole purpose.
Any pure code (WASM or otherwise) that does not perform any input/output is by definition useless. It consumes electricity to do computation and there is no way to communicate its results.
The use case here was to use a KDF function from the TEE, and I assume it serves as an oracle where the actual key material cannot be revealed.
1 reply →