SE050: sss_cipher_one_go() returns kStatus_SSS_Fail (SM_ERR_CONDITIONS_OF_USE_NOT_SATISFIED)

[fvjdxe]

Hello,

I am trying to encrypt some data using AES. I wrote the key to the SE using Se05x_API_WriteSymmKey() an now want to encrypt using sss_cipher_one_go(). This function returns kStatus_SSS_Fail. When debugging into this function I can see that DoAPDUTxRx_s_Case4_ext() returns SM_ERR_CONDITIONS_OF_USE_NOT_SATISFIED inside Se05x_API_CipherOneShot(). This error code is not documented for any APDU that is related to AES. So I have no idea what I have done wrong. Can you give me a hint?

Best regards

[Kan_Li]

Hi @fvjdxe ,

Actually the MW for SE050 provides a demo of "ex_symmetric", in which an AES is created to perform Encryption on some data by sss_cipher_one_go().

Did your issue come from this demo? Please kindly clarify.

Is it possible to share the log?

Have a great day,
Kan

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[fvjdxe]

Hello Kan,

I had adapted the demo. I fixed my problem by now. It turned out that some buffer had the wrong size.

Best regards

[Kan_Li]

Hi @fvjdxe ,

Thanks for the update! It is great to know this issue has been solved.

Have a great day,
Kan

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