Secure Data Box is a software application that uses encryption to protect sensitive user data, including usernames, passwords, and credit card information. The program stores encrypted data within its executable file, providing an extra layer of security.

The software is designed as a single file: BFBOX.EXE, with encrypted user data being stored inside the program itself. The program has a storage capacity of up to 16,000 characters of user data, and it is compatible with Windows 2000, XP, or 32-bit Windows 7 systems.
BFBOX uses the Blowfish encryption algorithm in CBC mode, with a 448-bit encryption key. Additionally, the software includes detection and user alert for weak Blowfish keys while ensuring that encrypted-key bytes with the high bit set are handled correctly. Decrypted user data is displayed on the monitor only, never written to disk, making it impossible for hackers or cybercriminals to access your information.
Installation of the software is easy, requiring the execution (double-click) of the distribution file BFBOX2_0.EXE. Similarly, to uninstall the program, users need to exit from the BFBOX program if it is running, then double-click on the file C:\DOS\linkmode\BFBOX\UNINSTAL.BAT.
Overall, BFBOX is an excellent software that offers a secure and safe solution for the storage of sensitive user data. With its robust encryption algorithm, compatibility with various Windows systems, and straightforward installation and uninstallation process, it is a must-have for anyone who cares about data privacy and security.
Version 2.0:
Change program name from SBOX to BFBOX.
Add Weak key detection and upgrade to latest Blowfish test vectors.
Increase Blowfish key length from 128 to 448 bits.
Increase encrypt and decrypt times to about 2 seconds.
Change screen background from blue to red to reduce eye exposure to blue light.