* age-encryption in web assembly

** Compile
Compile with:

#+BEGIN_SRC
wasm-pack build --target web
#+END_SRC

don't forget the ~--target web~, otherwise strange mimetype issues
may arise in browsers.

** What?
Mostly an experiment how well this works. Public key crypto works fine,
but for some reason decrypting files encrypted with a passphrase takes
an inordinate amount of time, and browsers' mining-detectors tend to
complain.

The encryption used is the [[https://crates.io/crates/age][age rust crate]], which is a reimplementation
of Filippo Valsorda's [[age-encryption.org][age encryption]]. The rust implementation is still
marked as beta, so this probably shouldn't be used for anything important.