The connection that failed while opening file within cryptographic module - mbedtls_ssl_handshake returned -9984 ( X509 - Certificate verification failed, e.g. CRL, CA or signature check failed is known to be a kind of a TLS hanshake failing with EC.
These are known to be Software, hardware or what we call the firmware that is made up of one or a lot of cryptographic functions.
Note that a cryptographic product is one that is made up of a kind of cryptographic module and they also help to implements security functions (such as cryptographic algorithms),
Therefore, based on the above, The connection that failed while opening file within cryptographic module - mbedtls_ssl_handshake returned -9984 ( X509 - Certificate verification failed, e.g. CRL, CA or signature check failed is known to be a kind of a TLS hanshake failing with EC.
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