I have also enabled MBEDTLS_ENTROPY_NV_SEED

Thanks,
LIJIN T V
From: T V LIJIN (EXT)
Sent: Wednesday, January 27, 2021 10:38 AM
To: mbed-tls@lists.trustedfirmware.org <mbed-tls@lists.trustedfirmware.org>
Cc: Subramanian Gopi Krishnan <gopikrishnan.subramanian@kone.com>
Subject: ENTROPY_SOURCE_FAILED :0x0034
 
Hi,
After enabling MBEDTLS_NO_PLATFORM_ENTROPY and MBEDTLS_SHA512_C , mbedtls_ctr_drbg_seed is returning 0x0034 (MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED)
But if I just enable MBEDTLS_NO_PLATFORM_ENTROPY and keep MBEDTLS_SHA512_C disabled, it does not return any error for mbedtls_ctr_drbg_seed.

My project uses certificates with SHA384 signature, so it requires MBEDTLS_SHA512_C to be enabled.
MBEDTLS_NO_PLATFORM_ENTROPY and MBEDTLS_SHA512_C both needs to be enabled in my project , but Iam facing issue with  mbedtls_ctr_drbg_seed returning 0x0034. Please guide me on this. What might be the reason for mbedtls_ctr_drbg_seed to fail while enabling MBEDTLS_SHA512_C.
How to overcome this issue?


Thanks,
LIJIN T V