Simply put CPU card is more secure than M1 card, better scalability, support more applications
| CPU card | M1 | |
|---|---|---|
| operating system |
With COS system |
No COS system |
| Hardware encryption module |
DES hardware computing module |
No hardware encryption module algorithm |
| Algorithm Support |
Standard (DES) algorithm |
Manufacturer-specific algorithm is not disclosed |
| Key Length |
16 byte DES |
12 -byte password |
| Transaction Security |
Wallet can not be unauthorized access; two-way between the PSAM and strict certification process; forming a non-repudiation of transactions automatically TAC code |
Wallet password protection, the password does not check the number of errors; replace plain text password can be intercepted, the device can not verify the legitimacy of the card |
| Terminal security |
Dynamic key, key storage, transaction authentication and encryption independently calculated by SAM card, safe and secure |
Fixed key card does not support SAM mutual authentication |
| Multi-application |
Support multi-application, independent of the application; each application COS, capacity, definable functions can be completely different, it supports multiple authentication methods |
Simple support multiple applications, the number of applications and the limited capacity of each application |
| capacity |
4Kbytes～80Kbytes |
8Kbytes |
| Space allocation |
Papers, free distribution of any size, and the flexibility to set access conditions |
Sector way, each area 64Kbytes, will result in a waste of space |
| Data integrity |
Support anti-plug power protection and treatment by the COS to ensure data integrity |
Does not support power protection, backup and recovery mechanisms require human |
| Communication speed |
106Kbps , 847Kbps up |
106Kbps |
Reproduced in: https: //www.cnblogs.com/rainman/p/3336962.html