BUY MEGAMOS/RES https://www.utsource.net/itm/p/958257.html

MEGAMOS/RES is a SOP-20 package from Siemens. It is a secure access module with a built-in cryptographic processor. It is used for secure authentication of access to a variety of applications, such as automotive immobilizers, electronic door locks, and other access control systems. It features a high-speed, low-power 8-bit microcontroller, a secure key storage, and a secure authentication protocol. It is also designed to be resistant to physical attack, with tamper-proof packaging and an integrated security shield. The MEGAMOS/RES is suitable for a wide range of applications, including automotive, industrial, and consumer applications. (For reference only)