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Data transmission method and device

A data transmission method and data technology, applied in the field of information security, can solve problems such as reducing the efficiency of data transmission

Inactive Publication Date: 2015-03-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a data transmission method and device, which is used to solve the problem that the sender and the receiver need to perform information interaction in advance in the existing method of encrypting data, which reduces the data transmission efficiency

Method used

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  • Data transmission method and device

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Embodiment Construction

[0061] Using the data transmission method provided by the present invention, after determining the data to be transmitted, the sending end generates a first random number and a second random number, determines the key material identifier according to the first random number, and generates a corresponding salt according to the second random number value; obtain the key material used to generate the corresponding key for encrypting the data according to the determined key material ID, and generate a key according to the key material and salt value. After the data is encrypted by the key, the encrypted The final data, identified key material identifier and salt value are sent to the receiving end. The receiving end receives the encrypted data, key material identifier and salt value sent by the sending end; determines the key material used to generate the key corresponding to decrypting the encrypted data according to the key material identifier, and according to the determined key...

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Abstract

The invention discloses a data transmission method and device which aim to solve the problems that in the prior art, in a data encrypting method, a sender and a receiver are required to conduct information interaction in advance, and the data transmission efficiency is lowered. The method includes the steps that after a sending terminal determines data required to be transmitted, a first random number and a second random number are generated, a secret key material and a salt value are generated according to the first random number and the second random number respectively, and finally a secret key is determined to encrypt the data; a receiving terminal receives the encrypted data while receiving a secret key material mark and the salt value, and a secret key is generated according to the secret key material mark and the salt value to decode the encrypted data. Accordingly, both the sender and the receiver do not need to conduct information interaction before data transmission, on the premise that data confidentiality is guaranteed, data transmission efficiency is guaranteed, and the safety of the data is improved.

Description

technical field [0001] The invention relates to the field of information security, in particular to a data transmission method and device. Background technique [0002] Confidentiality is one of the three basic services of information security, which is to prevent important data from being leaked during storage or transmission. Therefore, when data is exchanged between nodes of data transmission, SSL is used to establish a secure channel and the data packets are encrypted. [0003] At present, in the prior art, methods for encrypting data are roughly divided into two types: symmetric encryption and asymmetric encryption. Among them, the symmetric encryption method is used for data encryption, and the encryption and decryption speed is fast, but the symmetric key needs to be negotiated between the sender and the receiver in advance; while the asymmetric encryption method is used for data encryption, the encryption and decryption speed is relatively slow, and the receiver Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L29/06
Inventor 王显雷
Owner HUAWEI TECH CO LTD
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