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Cloud stored data encrypted transmission method, system, equipment and storage medium

A technology of data encryption and transmission method, applied in the field of blockchain computing, can solve problems such as data leakage, and achieve the effect of avoiding data leakage and reducing the risk of data leakage

Inactive Publication Date: 2019-02-19
SHENZHEN THUNDER NETWORK TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a cloud storage data encryption transmission method, a smart contract system, a cloud storage device, and a computer-readable storage medium, aiming at solving the technical problem of how to avoid the risk of data leakage due to mutual trust issues

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  • Cloud stored data encrypted transmission method, system, equipment and storage medium
  • Cloud stored data encrypted transmission method, system, equipment and storage medium

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Embodiment Construction

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0040] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, without having to use To describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments descr...

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Abstract

The invention discloses a cloud stored data encrypted transmission method which comprises the steps of: receiving a transaction request which is initiated by a first user and aims at one encrypted file stored on cloud storage equipment and a public key of the first user; sending the public key of the first user to a second user, so that the second user utilizes the public key of the first user anda private key of the second user to calculate to obtain a re-encrypted key; acquiring the re-encrypted key from the second user, and recording preset type information of the encrypted file; and sending mapping relationship data between the re-encrypted key and the preset type information of the encrypted file to the cloud storage equipment, so that the cloud storage equipment utilizes the re-encrypted key to re-encrypt the encrypted file and generates a corresponding re-encrypted file for the first user to acquire the re-encrypted file and decrypt. The invention further discloses a smart contract system, cloud storage equipment and a storage medium. According to the invention, the risk of data leakage in the data file transaction process, which is caused by the mutual trust problem, can be effectively avoided.

Description

Technical field [0001] The invention relates to the field of blockchain computing, in particular to a cloud storage data encryption transmission method, a smart contract system, a cloud storage device and a storage medium. Background technique [0002] Traditional cloud storage data encryption and transaction schemes usually include two types. One is that users upload unencrypted data files to the cloud server, encrypt them on the cloud server, and then allow other users to download transactions; Before uploading the unencrypted data file to the cloud server, it is encrypted on the user side, and the encrypted data file is uploaded to the cloud server, and then other users can download the transaction. The disadvantage of traditional cloud storage data encryption and transaction schemes is that encryption on the cloud server may cause the risk of data leakage due to mutual trust issues. If the cloud server is uploaded after encryption on the user side, the data transaction partie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08
CPCH04L63/0442H04L63/0478H04L67/1097H04L2463/102
Inventor 王林
Owner SHENZHEN THUNDER NETWORK TECH
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