i.MX ProcessorsのトピックRe: i.MX93: Encrypted Data Storage API Test Error

i.MX93: Encrypted Data Storage API Test Error

petertseng — Tue, 24 Feb 2026 03:27:51 GMT

Hi Team,

I performed ELE-HSM Tests according to the method provided in the README file at https://github.com/nxp-imx/imx-secure-enclave/blob/lf-6.12.49_2.2.0/

The following error was encountered.

--------------------------------------------------- Encrypted Data Storage API Test --------------------------------------------------- Data [Encrypted + Signed] stored. SUCCESS Data [Encrypted + Signed] retrieved. SUCCESS Signature Verified. SUCCESS. Decrypted data matches stored Plain data. SUCCESS SAB Error: SAB CMD [0xa2] Resp [0x329] - Provided key-id, Unknown to key store.. hsm_data_ops [RETRIEVE Again] err: 0x3. SUCCESS Retrieved Again: Data Empty. SUCCESS ---------------------------------------------------

Why is the ELE-HSM test reporting an error?

Do I need to store the key in OTP first?

Attach the logfile

Thanks,

Peter

Re: i.MX93: Encrypted Data Storage API Test Error

Zhiming_Liu — Mon, 02 Mar 2026 02:21:07 GMT

Hi @petertseng

This is a phenomenon consistent with the test expectations; there is no need to store the key in the OTP.

Best Regards,
Zhiming

Re: i.MX93: Encrypted Data Storage API Test Error

petertseng — Mon, 02 Mar 2026 07:22:04 GMT

Hi Zhiming,

Can an IMX93 ELE-HSM be used to replace the Crypto Authentication IC (e.g., ATECC608A)?

If possible, how should I achieve this?

I would be extremely grateful if you could provide any relevant information or documents.

Thanks,

Peter

Re: i.MX93: Encrypted Data Storage API Test Error

Zhiming_Liu — Wed, 04 Mar 2026 05:30:51 GMT

Hi @petertseng

In certain scenarios, their functionalities overlap, but ELE-HSM cannot fully replace ATECC608A. If you require a completely independent/offiline secure element, then ATECC608A should be used. If your needs are limited to key storage + AES encryption/decryption + RNG + SHA + secure boot, then using ELE is an option.

Best Regards,
Zhiming

Re: i.MX93: Encrypted Data Storage API Test Error

petertseng — Mon, 09 Mar 2026 08:25:59 GMT

Hi Zhiming,

How can I store the public key on the IMX93 ?

Where is the public key physically stored ? (e.g., in OTP/eFUSE or root filesystem)?

Thanks,

Peter