This application note describes how to use the Dallas Semiconductor DS5250 High-Speed Secure Microprocessor as a secure coprocessor to protect passwords, PINs, encryption keys and other critical data.
The DS5250 employs triple-DES bus encryption, elaborate tamper sensors, and battery-backed SRAM to form a cryptographic boundary that shields valuable intellectual property. A user-configurable external tamper sensor allows the system architect to extend the DS5250's security shield to include the application's enclosure, protecting all of the system components if desired.
