[steakejjs]

In case people are interested in the under-the-hood. I just dug in a little bit and it looks like a library is used that automatically generates IV for each encrypt, and automatically uses your passphrase, passed through EvpKDF as the key.

SHA3, Rabbit, and whatever EvpKDF does, I don't actually have time to look at that.

[colept]

On binbox.io, we use a similar library called Stanford Cryptograph JavaScript Library. It's fast enough that small files decrypt and encrypt within reasonable times, but it scales poorly to large files.