Is zero ADKP a special value for HSE-B of S32K3?

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Is zero ADKP a special value for HSE-B of S32K3?

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snaku_lee
Contributor III

Hi, 

I am testing the password mode of secure debug feature with S32K324, and my HSE FW version is v2.1.0.

I write zero value to HSE-B ADKP; I verify the SHA224 with the response code is correct, and I use the script, authenticate_password_mode.py with zero password to check the authentication is success..

But after I change S32K324's life cyc to OEM, I can't authenticate secure debug with zero password? and authenticate_password_mode.py with zero password also failed.

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VaneB
NXP TechSupport
NXP TechSupport

Hi @snaku_lee 

I am afraid that both all 0x00 or all 0xFF are disallowed values for ADKP. This issue has been repaired in HSE FW version 0.2.32.0 version as below:

VaneB_0-1724790033488.png

BR, VaneB

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snaku_lee
Contributor III

OK, I will not use all 0x00 or 0xFF as ADKP, thanks for your information.

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VaneB
NXP TechSupport
NXP TechSupport

Hi @snaku_lee 

I am afraid that both all 0x00 or all 0xFF are disallowed values for ADKP. This issue has been repaired in HSE FW version 0.2.32.0 version as below:

VaneB_0-1724790033488.png

BR, VaneB

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