TiddlyWiki5 allows the entire content of a TiddlyWiki HTML file to be encrypted with the Stanford JavaScript Crypto Library. Opening an encrypted TiddlyWiki in the browser prompts for a password before decrypting and displaying the content.
* The ability of the BootMechanism to read a block of encrypted tiddlers from the TiddlyWiki file, to prompt the user for a password, and to decrypt the tiddlers
* Handlers for the messages [[WidgetMessage: tw-set-password]] and [[WidgetMessage: tw-clear-password]] that handle the user interface for password changes
* The [[$:/isEncrypted]] tiddler that contains "yes" or "no" according to whether there is a password in the password vault
** The availability of this tiddler allows the RevealWidget to be used to selectively display user interface elements according to whether encryption is in force