Not able to configure mbedtls in STM32CubeIDE

Advait · ‎2025-09-23

I want to use the rsa feature of mbedtls but when I uncomment #define MBEDTLS_RSA_C in the mbedtls_config file it is showing undefined reference to mbedtls_rsa_get_len, mbedtls_rsa_check_pub_priv, mbedtls_rsa_init, mbedtls_rsa_free and mbedtls_rsa_import_raw.

Ghofrane GSOURI · ‎2025-10-03

Hello @Advait

I sincerely apologize ,I forgot to mention the steps I have already taken.

In STM32CubeMX, follow these steps to enable RSA support in MbedTLS:

1- Under Middleware, select MbedTLS.
2- Go to the Module tab.
3- Enable the option Show Advanced Parameters.
4- In the search bar, type MBEDTLS_RSA_C.
5- When you find the MBEDTLS_RSA_C option, set it to "Defined" ( select "Defined" from the dropdown).

Then Go to Feature support tab and change the value of MBEDTLS_PKCS1_V15 and MBEDTLS_PKCS1_V21 to defined

Generate and build the code : the rsa.c will be added successfully to your project

I am sorry again

THX

Ghofrane

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Ghofrane GSOURI · ‎2025-09-24

Hello @Advait

Could you please provide your IOC in order to push further the investigation.

THX

Ghofrane

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AdvaitD · ‎2025-10-01

Hi @Ghofrane GSOURI

Sorry for the late reply. Here is my ioc file.

Advait · ‎2025-10-01

Hi @Ghofrane GSOURI

I accidently logged in with my other account. you can use the ISO file provided above.

Ghofrane GSOURI · ‎2025-10-01

Hello @Advait

After uncommenting the line #define MBEDTLS_RSA_C, I encountered the following build error:

In file included from ../MBEDTLS/App/mbedtls_config.h:3294,
                 from ../Middlewares/Third_Party/mbedTLS/library/camellia.c:31:
../Middlewares/Third_Party/mbedTLS/include/mbedtls/check_config.h:511:2: error: #error "MBEDTLS_RSA_C defined, but none of the PKCS1 versions enabled"
  511 | #error "MBEDTLS_RSA_C defined, but none of the PKCS1 versions enabled"

To resolve this issue, I also uncommented #define MBEDTLS_PKCS1_V21 in the configuration file.
After making this change, the build completed successfully I did not encounter any undefined reference errors.

THX

Ghofrane

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Advait · ‎2025-10-02

Hello @Ghofrane GSOURI
I uncommented #define MBEDTLS_PKCS1_V21 but its giving this build error.

Advait · ‎2025-10-02

I am not able to enable features using the GUI

Ghofrane GSOURI · ‎2025-10-03

Hello @Advait

Are you using the latest version of STM32CubeIDE 1.19.0?

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Advait · ‎2025-10-03

No, I am currently on 1.17.0

Ghofrane GSOURI · ‎2025-10-03

Hello @Advait

Please use the latest version of STM32CubeIDE (1.19.0). I have already tested it, and the build completed successfully. There may be issues present in version 1.17.0 that have been resolved in 1.19.0.

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