In fact, I mention the SEE in my package's documentation. If you have a license to the paid extension, it should be easy to compile it and use it with my package.
It will be slow, however, because it will be running the reference AES implementation in Wasm.
That said, if anyone is interested in sponsoring a SEE license, I can look into doing the encryption Go (which uses assembly on most platforms for those bits).
But the only versions mentioned in [1] that should compile out of the box into Wasm, are the ones that say they use "the Rijndaal reference implementation."
I don't think compiling OpenSSL into Wasm is tenable. But some wrappers around the Go AES implementation should work.
They’re not going to make it easy.