Encryption

[espruino-discuss]

Posted at 2015-08-27 by Tobbe

I'd like to encrypt a string with a secret key, that I can later use to also decrypt the string.

What options do we have for that on the Pico? Would this work? http://bitwiseshiftleft.github.io/sjcl/

[gfwilliams]

Posted at 2015-08-27 by @gfwilliams

Hi Tobbe,

You can try that library, but I think you'll find that it might be too big for Espruino.

There was a good forum post on it here: http://forum.espruino.com/conversations/267841/

I just realised there wasn't actually a usable implementation there - so if you look at the end I've posted up the JS implementation, tweaked to work with Espruino.

[espruino-discuss]

Posted at 2015-08-27 by Tobbe

Too big in what way? Minified it's 19kb, so storage-wise it'll fit.

But thanks for your TEA-implementation, I'll use that :)

[gfwilliams]

Posted at 2015-08-27 by @gfwilliams

Oh wow, that's great. Sorry - I looked at the GitHub and saw a bunch of files. I didn't realise it minified down so well!

It'd be really interesting to give that a try actually.