[lx2160a] Are there any fuses in lx2160a for user use ?

[Jeffrey_Lai]

Hi NXP,

We want to save incommutable data like rsa key pair and product data for our application use.

Are there any fuses in LX2160A for our use ?

Thank you,

Jeffrey

[yipingwang]

Lx2160a provides the fuses below  for secure boot.

256b – Super Root Key(s) Hash (Trust 2.x+ for list)

64b - Debug Challenge Value

64b - Debug Response Value

256b - One Time Programmable Master Key

32b - OEM Unique ID

The OEM Unique ID/Scratch Pad Fuse Registers of the Security Fuse Processor (SFP) could be used to store the system serial number.

[Jeffrey_Lai]

Hi  yipingwang,

Actually we want to store RSA 256 or RSA 512 key pair in SFP for ipsec use.

If we write key in 256b - One Time Programmable Master Key, but it can not be read.

According to LSDK user guide, it return all "FF" value if  we read OTPMK.

Is there any way can read OTPMK value on userland ?

[yipingwang]

No method to read OTPMK value on userland.