DocSecrets - Google Docs Add-on
DocSecrets is an add-on for Google Docs that hides and encrypts sensitive information such as passwords or an idea for a patent.


Security
All secrets are encrypted using AES in your browser. This means that inserted secrets are never sent or stored in unencrypted form. Likely, your pass-phrase is never sent or stored anywhere. Only you can decrypt your secrets so pick a passphrase that you can remember. All data is stored under your document as properties. 



Collaboration
DocSecrets supports document sharing and enables you to censor parts of your document. If you reveal your passphrase to your collaborators they to can view and edit secrets. 


Features
Insert secrets displayed as highlighted text
Censor current selection
Sidebar tracks you cursor and displays the correct secret
Edit secrets
Reveal selected secret
Reveal all secrets
Remove secrets by deleting them in the document
Move secrets by cut and paste
Sidebar will be cleared after 5 min of inactivity
Supports sharing and collaboration
Client side AES encryption
All encrypted information is stored under your document