A basic challenge based encryption extension for chrome. Uses SJCL to do all the heavy lifting, caveat emptor: http://www.matasano.com/articles/javascript-cryptography/
The extension will provide some secrecy in inputs/forms. If you doubt the website you are visiting will read/share your text, this will make it hard for them to do so.
You can still share your text to people with a pass and the extension (or yourself).
This is a very early project.
Requires bower for installing SJCL
right.
*http://www.matasano.com/articles/javascript-cryptography/
*http://www.slideshare.net/kevinhakanson/developers-guide-to-javascript-and-web-cryptography
*http://bitwiseshiftleft.github.io/sjcl/
*http://bitwiseshiftleft.github.io/sjcl/doc/
*https://developer.chrome.com/extensions/messaging.html
*https://developer.chrome.com/extensions/content_scripts.html
o, and yes, no jquery please :)
*http://youmightnotneedjquery.com/?hn