mbedtls crash on rt685 (using function mbedtls_pk_parse_public_key)

[Henry2]

recently, i doing verify on rt685 using mbedtls library, but when i  use mbedtls_pk_parse_public_key function. it just crash when i turn on the power and got it into hard fault.

i have no idea, what it happen, and hard to debug, thanks.

[jeremyzhou]

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Before answering your question, I was wondering if you can introduce the testing environment, for instance, board, code, IDE, etc.
Have a great day,
TIC

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[Henry2]

i am using nxp rt685, with bare metal c, the code just look like

mbedtls_pk_init(&pk);

int ret = mbedtls_pk_parse_public_key(&pk, pub_key, strlen(pub_key)+1);

the config of mbedtls is like

#define MBEDTLS_HAVE_ASM

#define MBEDTLS_HAVE_TIME

#define MBEDTLS_NO_PLATFORM_ENTROPY

#define MBEDTLS_ENTROPY_HARDWARE_ALT

#define MBEDTLS_AES_C

#define MBEDTLS_BIGNUM_C

#define MBEDTLS_CIPHER_C

#define MBEDTLS_CIPHER_MODE_CTR

#define MBEDTLS_CTR_DRBG_C

#define MBEDTLS_ENTROPY_C

#define MBEDTLS_MD_C

#define MBEDTLS_CMAC_C

#define MBEDTLS_GCM_C

#define MBEDTLS_CCM_C

#define MBEDTLS_SHA256_C

#define MBEDTLS_SHA512_C

#define MBEDTLS_ECP_C

#define MBEDTLS_ECP_DP_SECP256R1_ENABLED

#define MBEDTLS_ECP_DP_CURVE25519_ENABLED

#define MBEDTLS_ECDSA_C

#define MBEDTLS_ASN1_PARSE_C

#define MBEDTLS_ASN1_WRITE_C

#define MBEDTLS_ECDH_C

// for rsassa-pss-2048 encryption

#define MBEDTLS_PK_PARSE_C

#define MBEDTLS_ASN1_PARSE_C

#define MBEDTLS_PK_C

#define MBEDTLS_OID_C

#define MBEDTLS_BIGNUM_C

#define MBEDTLS_PKCS1_V21

#define MBEDTLS_PEM_PARSE_C

#define MBEDTLS_BASE64_C

#define MBEDTLS_RSA_C

[jeremyzhou]

Hi,
Thanks for your reply.
To provide the fastest possible support, I'd highly recommend you to refer to the post to find out the root cause of triggering the Hardfault.
Have a great day,
TIC

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