Transmission line for transmitting data through multiple decryption keys and use method

Abstract

The invention discloses a transmission line for transmitting data through multiple decryption keys and a use method, and relates to the technical field of information security. Comprising two Type-C interfaces, one Type-C interface 1 is connected with a Type-C interface of a source device, and the other Type-C interface 2 is connected with a Type-C interface of an external device; the connecting line is used for electrically connecting the two Type-C interfaces; and the decryption chip U1 is arranged in one Type-C interface 1 and performs information interaction with the source equipment. The authentication process can be completed by matching the real-time identification code with the preset identification code, so that a complicated encryption and decryption process does not need to be manually processed, the authentication can be automatically completed only by inserting a correct transmission line, the encryption step is simplified, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of information security technology, and in particular to a transmission line for transmitting data with multiple decryption keys and a use method thereof. Background Art

[0002] With the popularization of electronic devices and the development of technology, Type-C connectors are widely used in various electronic devices due to their versatility, high transmission rate, and reversible plug-in. Traditional Type-C data cables are mainly used to realize data exchange and charging functions between devices. Such data cables are usually composed of one or more wires and are connected to the device through the Type-C interface. During the data transmission process, the data signal is directly transmitted from one device to another through the wire.

[0003] Although existing Type-C data cables can meet basic data transmission needs, they do not have sufficient security mechanisms to protect sensitive information. Especially in corporate environments, data transmission involving business secrets becomes particularly important. Due to the lack of effective encryption measures, the use of standard data cables for data exchange may cause important design drawings or business information to be leaked to unauthorized personnel. In addition, in order to prevent data leakage, some companies will take encryption and lock measures on internal computer interfaces, which improves security but also increases the difficulty of normal data exchange between legitimate users. The existing Type-C connectors on the market do not provide any decryption key function, so users must rely on additional security software or other means to ensure the secure transmission of data.

[0004] The Chinese invention patent with publication number CN105208028A discloses a data transmission method and related devices and equipment, the method comprising: using a first key to encrypt the data to be transmitted to obtain first encrypted information; obtaining a public key; sending the first encrypted information and the public key to a second data transmission device; obtaining second encrypted information; sending the second encrypted information and the first key to a third data transmission device. The method provided by the embodiment of the invention, since the data sent by the first data transmission device to the third data transmission device only includes the second encrypted information and the first key, and the third data transmission device needs to use the first key and the second key to decrypt the second encrypted information, even if other terminals or applications obtain the second encrypted information and the first key sent by the first data transmission device, they cannot decrypt the second encrypted information to obtain the data to be transmitted, so the technical solution provided by the embodiment of the invention is conducive to improving the security of data transmission.

[0005] In the process of specific implementation, the above and similar data transmission methods are encrypted multiple times with multiple different keys, which not only increases the complexity of encryption, but also requires assistance from other devices in the actual application process, further limiting its application scenarios. Summary of the invention

[0006] The object of the present invention is to provide a transmission line for transmitting data with multiple decryption keys and a method for using the same, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a transmission line for transmitting data with multiple decryption keys, comprising:

[0008] Two Type-C interfaces, one Type-C interface 1 is connected to the Type-C interface of the source device, and the other Type-C interface 2 is connected to the Type-C interface of the external device;

[0009] A connecting line electrically connects the two Type-C interfaces;

[0010] The decryption chip U1 is arranged inside the Type-C interface 1 and performs information exchange with the source device.

[0011] Furthermore, port 1 of the decryption chip U1 is grounded through capacitor C1, and port 1 of the decryption chip U1 is electrically connected to pin A4, pin B4, pin A9 and pin B9 of Type-C interface 1, while port 2 of the decryption chip U1 is electrically connected to pin A5 of Type-C interface 1, and port 3 of the decryption chip U1 is grounded.

[0012] Furthermore, when the Type-C interface 1 is connected to the Type-C interface of the source device, the decryption chip U1 sends a real-time identification code to the source device, and the source device exchanges information with the external device according to the real-time identification code.

[0013] A method for using a transmission line for transmitting data using multiple decryption keys, comprising:

[0014] Device connection: connect the Type-C interface 1 of the transmission line to the Type-C interface of the source device, and connect the Type-C interface 2 of the transmission line to the Type-C interface of the external device;

[0015] Obtaining an identification code: the source device supplies power to the decryption chip U1 and obtains a real-time identification code of the decryption chip U1;

[0016] Data transmission: According to the real-time identification code and the preset identification code in the source device, the source device and the external device perform information exchange.

[0017] Furthermore, the source device obtains the real-time identification code of the decryption chip U1 through the A5 pin of the Type-C interface 1.

[0018] Furthermore, the source device and the external device perform information interaction, specifically:

[0019] When the preset identification code is consistent with the real-time identification code, the source device performs information exchange with the external device;

[0020] When the preset identification code is inconsistent with the real-time identification code, the source device does not perform information exchange with the external device.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] First, the present invention can complete the authentication process by matching the real-time identification code with the preset identification code, so there is no need to manually handle the complex encryption and decryption process. The authentication can be automatically completed by simply inserting the correct transmission line, thereby simplifying the encryption steps and improving the user experience;

[0023] Second: The present invention provides an additional security barrier for data transmission by setting a decryption chip U1 inside the Type-C interface, thereby preventing unauthorized data from being accessed. At the same time, not only the source device verifies the transmission line, but also the entire communication link can be protected, thereby ensuring that only legitimate devices can exchange data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A circuit diagram of a transmission line of the present invention;

[0025] Figure 2 The figure is a schematic diagram of the method for using the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the process of specific implementation, the existing data transmission method needs to be encrypted multiple times with multiple different keys, which not only increases the complexity of encryption, but also requires assistance from other devices in the actual application process, further limiting its application scenarios. The technical solution of the present application, by setting a transmission line with a decryption key, only needs to match the real-time identification code of the transmission line with the preset identification code in the source device during the data transmission between two different devices (source device and external device). Only when the two are successfully matched, data can be transmitted between the two devices, which not only simplifies the data encryption method, but also improves its application scenarios.

[0028] Example 1

[0029] refer to Figure 1 , this embodiment provides a transmission line for transmitting data with multiple decryption keys, and the transmission line includes two Type-C interfaces and connecting lines. The two Type-C interfaces are electrically connected to each other through a connecting line, and one of the Type-C interfaces is connected to the Type-C interface of the source device, and the other Type-C interface is connected to the Type-C interface of the external device. In this embodiment, the two Type-C interfaces are respectively set to Type-C interface 1 and Type-C interface 2. That is, Type-C interface 1 is connected to the Type-C interface of the source device, and Type-C interface 2 is connected to the Type-C interface of the external device. In other words, the source device and the external device are connected through Type-C interface 1, Type-C interface 2 and a connecting line, and information exchange can be performed.

[0030] Furthermore, a decryption chip U1 is provided inside the Type-C interface 1 connected to the Type-C interface of the source device, and in the specific operation process, the decryption chip U1 and the source device perform information exchange. That is to say, only when the information exchange between the decryption chip U1 and the source device is successful, data can be transmitted between the source device and the external device. Otherwise, even if the source device and the external device are connected through the transmission line of this embodiment, they cannot perform corresponding data transmission.

[0031] Further, port 1 of the decryption chip U1 in this embodiment is grounded through capacitor C1, and port 1 of the decryption chip U1 is electrically connected to pins A4, B4, A9, and B9 of Type-C interface 1, while port 2 of the decryption chip U1 is electrically connected to pin A5 of Type-C interface 1, and port 3 of the decryption chip U1 is grounded. In other words, port 2 of the decryption chip U1 is a communication port, and the communication port is connected to pin A5 of Type-C interface 1, that is, information is exchanged between the communication port and the source device through pin A5 of Type-C interface 1, thereby realizing information exchange between the decryption chip U1 and the source device.

[0032] In the specific implementation process, after the Type-C interface of the source device is connected to the Type-C interface 1 of the transmission line in this embodiment, the source device will supply power to the decryption chip U1 so that the decryption chip U1 can operate normally, and the decryption chip U1 sends a real-time identification code to the source device. Further, the source device exchanges information with the external device according to the real-time identification code.

[0033] Example 2

[0034] refer to Figure 2 This embodiment also provides a method for using a transmission line for transmitting data with multiple decryption keys, and the method specifically includes the following steps:

[0035] Step S1: Device connection. That is, the Type-C interface 1 of the transmission line in the above embodiment is connected to the Type-C interface of the source device, and the Type-C interface 2 of the transmission line is connected to the Type-C interface of the external device. It is worth noting that the source device and the external device can be connected through the Type-C interface of the transmission line and the connecting line in the above embodiment, and corresponding information exchange can be performed.

[0036] Step S2: Obtain the identification code. That is, after the Type-C interface 1 is connected to the Type-C interface of the source device, the source device supplies power to the decryption chip U1 inside the Type-C interface 1, and at the same time, the source device sends an operation instruction through the A5 pin of the Type-C interface 1, and the decryption chip U1 receives the operation instruction through the A5 pin of the Type-C interface 1, and according to the operation instruction, sends a real-time identification code to the source device through the A5 pin of the Type-C interface 1.

[0037] That is to say, the source device can supply power to the decryption chip U1, and can also interact with the decryption chip U1 through the A5 pin of the Type-C interface 1, that is, send operating instructions to the decryption chip U1, and receive the real-time identification code issued by the decryption chip U1.

[0038] Step S3: Data transmission. That is, according to the real-time identification code obtained in step S2, the real-time identification code is compared with the preset identification code in the source device, and according to the comparison result, the source device and the external device perform information exchange. Specifically:

[0039] When the preset identification code in the source device is consistent with the acquired real-time identification code, the source device performs information exchange with the external device.

[0040] When the preset identification code in the source device is inconsistent with the acquired real-time identification code, the source device does not perform information exchange with the external device.

[0041] It is worth noting that the preset identification code and the real-time identification code here are in a one-to-one correspondence, and both the preset identification code and the real-time identification code can be specifically set according to actual needs, so in this embodiment, there is no clear setting for their specific settings.

[0042] In the process of specific implementation, the source device can lock its signal transmission interface through relevant software (such as BitLocker), so after the external device and the source device are connected through the Type-C interface of the transmission line and the connecting line in the above embodiment, they cannot directly exchange information. It requires the source device to power the decryption chip U1, and at the same time receive the real-time identification code sent by the decryption chip U1 through the A5 pin of the Type-C interface 1, and compare and check the real-time identification code with the preset identification code in the source device. When the two are compared and checked to be consistent, the source device can exchange information with the external device and complete the corresponding data transmission.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A transmission line for transmitting data with multiple decryption keys, characterized in that: Included are: Two Type-C interfaces, one Type-C interface 1 is connected to the Type-C interface of the source device, and the other Type-C interface 2 is connected to the Type-C interface of the external device; A connecting line electrically connects the two Type-C interfaces; The decryption chip U1 is arranged inside the Type-C interface 1 and performs information exchange with the source device.

2. A transmission line for transmitting data with multiple decryption keys according to claim 1, characterized in that: Port 1 of the decryption chip U1 is grounded through capacitor C1, and port 1 of the decryption chip U1 is electrically connected to pins A4, B4, A9 and B9 of Type-C interface 1, while port 2 of the decryption chip U1 is electrically connected to pin A5 of Type-C interface 1, and port 3 of the decryption chip U1 is grounded.

3. A transmission line for transmitting data with multiple decryption keys according to claim 1, characterized in that: When the Type-C interface 1 is connected to the Type-C interface of the source device, the decryption chip U1 sends a real-time identification code to the source device, and the source device exchanges information with the external device according to the real-time identification code.

4. A method for using a transmission line for transmitting data with multiple decryption keys as claimed in any one of claims 1 to 3, characterized in that: Included are: Device connection: connect the Type-C interface 1 of the transmission line to the Type-C interface of the source device, and connect the Type-C interface 2 of the transmission line to the Type-C interface of the external device; Obtaining an identification code: the source device supplies power to the decryption chip U1 and obtains a real-time identification code of the decryption chip U1; Data transmission: According to the real-time identification code and the preset identification code in the source device, the source device and the external device perform information exchange.

5. The method for using a transmission line for transmitting data with multiple decryption keys according to claim 4, characterized in that: The source device obtains the real-time identification code of the decryption chip U1 through the A5 pin of the Type-C interface 1.

6. The method for using a transmission line for transmitting data with multiple decryption keys according to claim 4, characterized in that: The source device and the external device perform information interaction, specifically: When the preset identification code is consistent with the real-time identification code, the source device performs information exchange with the external device; When the preset identification code is inconsistent with the real-time identification code, the source device does not perform information exchange with the external device.

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