2416367_en-US

Bug with Hashcrypt on LPC55S06

Hello,
I encounter an infinite loop in my attempt to use Hashcrypt HW acceleration.
The Hashcrypt driver version is 2.2.17. The microcontroller get stuck at the line 679 in hashcrypt_sha_one_block() :

while (0U == (base->STATUS & HASHCRYPT_STATUS_WAITING_MASK))

{

//stuck here

}

Surprisingly, it appears to be stuck after 90 executions (our microcontroller manages to perform 89 times hashcrypt_sha_one_block without being stuck).

The main call is done by embedTLS ssl_tls.c file (see err.png).

Here is my current implementation of mbedtls_sha256_finish() (that I needed to implement by defining the SHA256_ALT when building mbedTLS v3.6.7

int mbedtls_sha256_finish(mbedtls_sha256_context *ctx,unsigned char *output)

{

status_t status;

status = HASHCRYPT_SHA_Finish(

HASHCRYPT,

(hashcrypt_hash_ctx_t *)ctx->hash,

output,

NULL);

return status;

}

Our code is bare metal, we don't have different processes.

Thank you very much for your help.

Regards,

Harold