topic Re: using CSEC_DRV_GenerateMACAddrMode calculate CMAC error for DFLASH data in S32K148 in S32K

using CSEC_DRV_GenerateMACAddrMode calculate CMAC error for DFLASH data in S32K148

yangyong1 — Sat, 17 Sep 2022 08:14:01 GMT

Dear,

I want to using CSEC_DRV_GenerateMACAddrMode calculate CMAC for DFLASH data, but the return value is STATUS_ERROR. The code is CSEC_DRV_GenerateMACAddrMode(CSEC_KEY1, (const uint8_t *)0x10000000, 0x30d80, flash_ext_cmac_cal);

but I using the same KEY to calclate the PFLASH data is OK, the function can return STATUS_SUCCESS.

How to using the CSEC calculate CMAC for DFLASH data?

Re: using CSEC_DRV_GenerateMACAddrMode calculate CMAC error for DFLASH data in S32K148

yangyong1 — Sat, 17 Sep 2022 08:15:11 GMT

the MCU is S32K148

Re: using CSEC_DRV_GenerateMACAddrMode calculate CMAC error for DFLASH data in S32K148

lukaszadrapa — Tue, 20 Sep 2022 12:54:14 GMT

Hi,

CSEC_DRV_GenerateMACAddrMode uses command CMD_GENERATE_MAC (pointer method) where the reference manual says:

So, it cannot be used for DFlash. The only option is to use CSEC_DRV_GenerateMAC which uses normal CMD_GENERATE_MAC command.

Regards,

Lukas

Re: using CSEC_DRV_GenerateMACAddrMode calculate CMAC error for DFLASH data in S32K148

yangyong1 — Mon, 26 Sep 2022 01:20:05 GMT

thank you very much.