Industrial Strength Encryption
Yojimbo helps you protect the privacy of your sensitive information, by providing easy to use encryption. This encryption is used automatically for Password items, and you may also choose to use it (on a per-item basis) for Notes, Images, PDFs, and Web Archives.
Yojimbo uses the Advanced Encryption Standard (US FIPS PUB 197) algorithm, with a 256-bit key (AES-256).
According to the Committee on National Security Systems :
The design and strength of all key lengths of the AES algorithm (i.e., 128, 192 and 256) are sufficient to protect classified information up to the SECRET level. TOP SECRET information will require use of either the 192 or 256 key lengths. The implementation of AES in products intended to protect national security systems and/or information must be reviewed and certified by NSA prior to their acquisition and use.
You can encrypt any item other than a Bookmark or Serial Number with a single click on the Encrypt button. (Yojimbo encrypts Passwords by default.)
If you click View, Yojimbo will prompt you for your password, then decrypt the item, just long enough to show it to you. Once you stop looking at the decrypted item (for instance, by displaying another item, or closing the window) you will need your password to see it again.