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How to confirm HSE FW authenticity

Now,I Used  “HseLib_HseFwInstall”software witch is supply by NXP engineer to install HSE FW。

Our customer raise a question: how to confirm HSE FW authenticity, because he think HSE FW itself don't have any signature,.it is easy 屏幕截图 2026-09-17 182416.png屏幕截图 2026-09-17 182416.png屏幕截图 2026-09-17 182416.pngto be tampered.

Who can tell me HSE FW weather have some security scheme to comfirm HSE FW authenticity?

Re: How to confirm HSE FW authenticity

Possibly you could create new ticket:

https://www.nxp.com/support/support:SUPPORTHOME

HSE documents are secure files, so following procedure is needed to follow unless you have already done it before:
https://www.nxp.com/docs/en/user-guide/nxp-secure-access-rights-registration.pdf

We could possibly share some presentation.


Re: How to confirm HSE FW authenticity

Thank you for answer this question.Could you tell me how can I find these reference about these contents.InI haven't noticed these contents yet.

Re: How to confirm HSE FW authenticity

Hi,

HSE FW is indeed protected — it is not plain unsigned binary.

  • The FW image is encrypted and signed by NXP before distribution.

  • NXP pre-programs ROM keys into the HSE subsystem during manufacturing (hardware Root of Trust). These keys are never accessible externally.

  • During installation, the on-chip Secure BAF uses those ROM keys to authenticate the image before writing it to flash. A tampered image is rejected.

Bottom line: without NXP's private signing key, it is impossible to install a modified HSE FW. The trust is rooted in silicon.

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