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Data encryption transmission method, device and gateway in centralized network

A centralized network and data encryption technology, which is applied in the fields of equipment, gateways, and data encryption transmission methods, can solve problems such as unfavorable cloud platform decryption data, increased cloud platform processing workload, and inability to obtain communication information of home appliances in a timely and convenient manner. Achieve the effect of small processing burden and convenient decryption process

Active Publication Date: 2019-03-22
QINGDAO HAIER TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this communication method, the gateway obtains ciphertext data, and the gateway uploads ciphertext data encrypted with Kab to the cloud platform, which cannot be decrypted by the cloud platform, or additional mechanisms need to be designed to ensure that the cloud platform obtains the shared key Kab And it can identify that the uploaded data is the data transmitted between device A and device B, thus increasing the processing principle of the cloud platform, and the cloud platform cannot obtain the communication information of home appliances in a timely and convenient manner
Moreover, if the number of devices is large, a large number of shared keys will be generated, which will also bring difficulties to the cloud platform to choose the correct decryption key, which is not conducive to the cloud platform to decrypt the uploaded data

Method used

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  • Data encryption transmission method, device and gateway in centralized network
  • Data encryption transmission method, device and gateway in centralized network
  • Data encryption transmission method, device and gateway in centralized network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The first embodiment provides a data encryption transmission method in a centralized network system, the execution subject of the method is a device in the centralized network system, refer to image 3 , which includes the following steps:

[0066] Step 301: the device obtains the homegroup key from the key management server;

[0067] Step 302: the device obtains the session key from the gateway;

[0068] Step 303: the device generates a data encryption key according to the homegroup key and the session key;

[0069] Step 304: the device uses the data encryption key to encrypt the data to be sent;

[0070] Step 305: the device sends the encrypted data to the gateway.

[0071] Further, the method may further include the following steps: receiving the ciphertext data sent by the gateway; and decrypting the ciphertext data with a data encryption key.

[0072] Preferably, step 303 may specifically include the following step: XOR processing the homegroup key and the sess...

Embodiment 2

[0075] The second embodiment provides another data encryption transmission method in a centralized network system, the execution subject of this method is a device in the centralized network system, refer to Figure 4 , which includes the following steps:

[0076] Step 401: Obtain a session key from the gateway;

[0077] Step 402: Send the session key to the key management server;

[0078] Step 403: Receive the data encryption key generated by the session key and the homegroup key returned by the key management server;

[0079] Step 404: use the data encryption key to encrypt the data to be sent;

[0080] Step 405: Send the encrypted data to the gateway.

[0081] Further, the method may further include the following steps: receiving the ciphertext data sent by the gateway; and decrypting the ciphertext data with a data encryption key.

[0082] In this second embodiment, on the basis of the advantages of the first embodiment, the cost of periodically updating the home group...

Embodiment 3

[0084] The third embodiment provides another method for encrypting data transmission in a centralized network system. The execution subject of the method is a gateway in the centralized network system. Refer to Figure 5 , which includes the following steps:

[0085] Step 501: Generate a first session key for the first device and send it to the first device;

[0086] Step 502: Generate a second session key for the second device and send it to the second device;

[0087] Step 503: Receive encrypted data sent by the first device;

[0088] Step 504: Use the first session key to decrypt the encrypted data to obtain ciphertext data encrypted with the homegroup key;

[0089] Step 505: Encrypt the ciphertext data again with the second session key;

[0090] Step 506: Send the encrypted data to the second device.

[0091] Further, after step 504, the method may further include the following steps: recording the ciphertext data encrypted with the family group key, and uploading to t...

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Abstract

The embodiment of the invention provides a data encryption transmission method, equipment and a gateway in a centralized network. The method comprises the steps of: acquiring a home group key from a key management server; acquiring a session key from the gateway; according to the home group key and the session key, generating a data encryption key; encrypting data to be sent by utilizing the data encryption key; and sending the encrypted data to the gateway. According to the method, a more reliable data encryption mechanism is introduced into the centralized network, and in the transmission process, a plaintext does not appear, so that end-to-end safety is achieved. Moreover, the data encryption transmission method, the equipment and the gateway are beneficial for conveniently decrypting uploaded data on a cloud platform, and a processing load of the cloud platform is reduced.

Description

technical field [0001] The invention belongs to the field of centralized intelligent home network, and in particular relates to a data encryption transmission method, equipment and gateway in a centralized network system. Background technique [0002] figure 1 It is a schematic structural diagram of a centralized smart home network in the prior art. Such as figure 1 As shown in , the home appliance is connected to the gateway and registers with the gateway for the services it provides. All communication between devices is done through the gateway. For example, when device A sends data to device B (device A calls the interface provided by device B to operate device B or device A sends a status message to device B), device A first sends the data (call command or status) to the gateway, which then sends the data to device B. Therefore, the gateway can perform unified management on all registered devices. [0003] The gateway is connected to the cloud platform to realize t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08H04L9/32
Inventor 茹昭
Owner QINGDAO HAIER TECH
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