Robert's Encryption uses AES-256 to encrypt your string with your passphrase in your browser (client side).
Download your encrypted string in a HTML page with a password prompt you can upload anywhere (see example ).
Also you can disable functions like Right Click, Cut, Copy & Paste by just only clicking here.
Disclaimer if you have extra sensitive banking data(Moneybookers, PayPal, etc), you should probably use something else!
Robert's Encryption generates a static, password protected page that can be decrypted in-browser: just send or upload the generated page to a place serving static content (github pages, for example) and you're done: the javascript will prompt users for password, decrypt the page and load your HTML.
It basically encrypts your page and puts everything with a user-friendly way to use a password
in the new file.
AES-256 is state of the art but brute-force/dictionary attacks would be trivial to
do at a really fast pace: use a long, unusual passphrase!