Patent ID: 11876917
Assignee: ICTK HOLDINGS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 5:
6. A security communication method using an interface element in an authentication device connected to an external device, the security communication method comprising:
receiving an encrypted session key from the external device through the interface element, the session key being encrypted using a public key;
decrypting, by a hardware-wired security module included in a security die-chip packaged together with the interface element, the encrypted session key using a private key provided by a physically unclonable function (PUF) in the security die-chip, and acquiring a session key;
encrypting, by the hardware-wired security module, a message using the session key and generating an encrypted message; and
transmitting the encrypted message through the interface element,
wherein the external device is without a hardware-based security authentication function,
wherein the authentication device is separable from the external device and provides hardware-based authentication to the external device using the decryption of the security die-chip and the private key by the PUF.