Patent Application
20240039901
The disclosure relates to an electronic device and a data transmission method thereof, and in particular to a data transmission method of an electronic device that can ensure data security.
In order to ensure that data will not be stolen, an encryption mechanism is often configured in a data transmission action between a controller and a memory device. In the prior art, the controller may perform complex encryption operations on transmission data and information serving as a key to obtain encryption data. Such encryption method requires a receiving end to use the information serving as the key to perform an inverse operation on the encryption data to restore the transmission data.
In addition, the conventional technology may also use an authentication manner of a digital signature to enable the receiving end to confirm whether the received transmission data is correct and unaltered data. However, such manner cannot encrypt the transmitted transmission data and cannot prevent the transmission data from being stolen. In addition, an authentication action of the digital signature also needs to be performed by an algorithm with a certain degree of complexity, so the complexity of the hardware is increased and the required power consumption is increased.
Based on the above, how to design an encryption mechanism that can ensure the security of transmission data without requiring an excessively complex algorithm and hardware circuit has become an important topic for designers in the art.
The disclosure provides an electronic device and a data transmission method, which can reduce the complexity of encryption operation and ensure the security of data transmission.
The data transmission method of the disclosure includes the following steps. Dummy data having multiple dummy bits is set. The dummy bits of the dummy data are inserted into transmission data according to an insertion type to generate encryption data. The encryption data is transmitted to a memory device.
The electronic device of the disclosure includes a memory device and a controller. The controller is coupled to the electronic device. The controller is used to set dummy data having multiple dummy bits; insert the dummy bits of the dummy data into transmission data according to an insertion type to generate encryption data; and transmit the encryption data to the memory device.
Based on the above, the controller of the electronic device of the disclosure generates the encryption data through inserting the dummy bits of the dummy data into the transmission data according to the insertion type. The complexity of generating the encryption data can be effectively reduced, and the transmission data can be prevented from being stolen during a transmission process to effectively ensure the security of the transmission data.
Please refer to
On the other hand, after receiving the encryption data MD, the memory device 120 may obtain the dummy data according to the insertion type based on look-up information 121. Here, the insertion type applied by the controller 110 to generate the encryption data MD may correspond to insertion type information, and the insertion type information may be preset in the memory device 120. In addition, the look-up information 121 may also be pre-stored in the memory device 120. Therefore, after receiving the encryption data MD, the memory device 120 may perform a look-up action on the look-up information 121 according to the insertion type information, so as to obtain the insertion type used by the controller 110 and the dummy data in the encryption data MD. Then, the memory device 120 may remove the dummy bits in the dummy data from the encryption data MD according to the insertion type, and restore the transmission data. In this way, the memory device 120 may perform a storing action of the transmission data.
In the embodiment, the memory device 120 may be a programmable non-volatile memory, such as a flash memory, a resistive memory, a magnetoresistive memory, a phase change memory, or a ferroelectric memory. The memory device 120 may also be a volatile memory, such as dynamic random access memory or a static random access memory. In addition, the memory device 120 may use a memory for storing the transmission data to store the look-up information 121. Alternatively, the look-up information 121 may also be stored in a memory different from the memory for storing the transmission data, which is not limited thereto.
Incidentally, the look-up information 121 in the embodiment may be dynamically adjusted. The controller 110 may adjust the applied insertion type and the correspondingly inserted dummy data. After the adjustment, the controller 110 may update the look-up information 121 in the memory device 120. The updating action of the look-up information 121 may be periodically executed to improve the security of the encryption data.
The controller 110 of the disclosure may be a processor having computing capability. Alternatively, the controller 110 may be a hardware circuit that is designed through a hardware description language (HDL) or any other digital circuit design manner well known to persons skilled in the art, and implemented through a field programmable logic gate array (FPGA), a complex programmable logic device (CPLD), or an application-specific integrated circuit (ASIC).
Regarding types of the insertion type, please refer to
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Please note that in the embodiment of
It is worth mentioning that the front insertion, the end insertion, and the interleaving insertion of the embodiments of the disclosure may be applied to the generating action of the encryption data individually or in combination. For example, the controller may insert the dummy bits of a first part of the dummy data into the transmission data by the front insertion; insert the dummy bits of a second part of the dummy data into the transmission data by the end insertion; and insert the dummy bits of a third part of the dummy data into the transmission data by the interleaving insertion. In this way, the complexity of the encryption data can be greatly increased.
Hereinafter, reference may be made to
In the embodiment, the logical values of the bits TD[0] to TD[7] of the transmission data and the dummy bits DD[0] to DD[7] are just examples for illustration. The logical values of the bits TD[0] to TD[7] of the transmission data and the dummy bits DD[0] to DD[7] may be any value without limitation.
It can be known from the above description that through the inserting action of the dummy data into the transmission data, there may be a considerable degree of difference between the transmission data and the transmitted encryption data MD. Therefore, it can be ensured that the transmission data will not be easily stolen by others during a transmission process, and the security of the transmission data can be ensured.
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The implementation details of the above Steps S610 to S630 have been described in detail in the foregoing embodiments and implementation manners, and will not be described in detail below.
In addition, in the embodiment of the disclosure, the memory device may obtain the dummy data according to the insertion type applied by the controller based on the look-up information. The memory device may remove the dummy bits from the encryption data according to the insertion type and restore the transmission data. The details of the action of restoring the transmission data by the memory device are also described in detail in the foregoing embodiments and implementation manners, and will not be described in detail below.
In summary, in the electronic device of the disclosure, the controller inserts the dummy data into the transmission data according to the insertion type to generate the encryption data. The encryption data is transmitted to the memory device. In this way, the encryption data can be prevented from being stolen by others to effectively maintain the security of the transmission data. In addition, the data inserting action adopted by the electronic device of the disclosure does not require a complicated algorithm, which can effectively reduce the complexity of hardware and power consumption. On the other hand, the memory device in the embodiments of the disclosure looks up the dummy data inserted in the encryption data and the inserted position according to the insertion type. In this way, the memory device may remove the dummy bits for the encryption data and restore the transmission data. The correct transmission data can be effectively obtained without applying a complex algorithm.
