CSEC: S32K148: ERC_KEY_INVALID for CSEC ECB job

[Pravin_Javalge]

Hello,

I am using Csec driver which is received by NXP.

I have done the program partition and I am able to write Master key and keys(for e.g. KEY_2) using Csec APIs commands  successfully but when I try to execute Csec_EncryptEcb(CSEC_KEY_2, aPlainText_Enc, 16U, aCipherText_Enc); then I am getting ERC_KEY_INVLAID.

aPlainText_Enc and aCipherText_Enc is array of 16 bytes

Can you please help what is the root cause here as I have taken care counter value(i.e set to 1 while writing first time) and flags (set to 1 i.e. only wild card is enable) while writing keys

[Senlent]

Hi@Pravin_Javalge

 Could you tell me which example-project you're using?

According to S32K-RM 36.5.13.3 User CSEc command interface and command set

• ERC_KEY_INVALID.

Example: key slot doesn't qualify per key map to command;KeyID[7:5] are set; kBS==0 & KeyIDx==0xE

This error code is returned by SHE whenever a funtion is called to perform an operation with key that is not allowed for the given operation.

Maybe you can take a look at AN5401,there are some example for your refernence in AN5401SW, and please take a look at the Example3_Basic_operations_SDK3.0.0.

This application note can be found in NXP website by seraching  for AN5401.

BR!

     Jim,

[Pravin_Javalge]

HI Jim,

Thank you for your reply.

I have taken reference from  S32K14X_CSEC_MCAL4_0_RTM_1_0_4_Sample_Application to update the keys and I am using macros CSEC_KEY_2 from CSEc static code which is received from NxP so kBS and KeyIDx shall not be an issue. I have gone through AN5401SW but not found anything which can  resolve my issue.

Can we have a debug session so I can show the issue and resolve it asap

[Senlent]

Hi@Pravin_Javalge

I'm not familiar with MCAL, so sorry , I may not be able to help you.
Can you change your  question title and re-post this question? I think experts in MCAL might be able to help you.

sorry again.

BR!

     Jim,