Data transmission method and device based on alliance chain

A technology for transmitting devices and data, applied in the blockchain field, can solve problems such as slow encryption and decryption speed, control, and low security of network transmission keys, so as to ensure controllability, security, and recoverability Effect

Active Publication Date: 2019-04-05
NANJING SUNING SOFTWARE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In order to solve the problems of the existing technology, the embodiment of the present invention provides a data transfer method and device based on the consortium chain to overcome the overall encryption and decryption in the prior art, the receiver can only view the entire message after obtaining th

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  • Data transmission method and device based on alliance chain
  • Data transmission method and device based on alliance chain
  • Data transmission method and device based on alliance chain

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Embodiment Construction

[0070] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Some, but not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0071] figure 1 It is a flowchart of a data transfer method based on consortium chain according to an exemplary embodiment, the method is applied to the first node on the block chain, refer to figure 1 As shown, the method includes the following steps:

[0072] S101: Divide the data into several data blocks, use different symmetric keys to correspondingly encrypt the...

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Abstract

The invention discloses a data transmission method and device based on an alliance chain. The method comprises the following steps of dividing data into several data blocks, using different symmetricsecret keys to correspond to encrypted data blocks, generating and numbering several data block ciphertexts, and then uploading to a blockchain; using the public key of a first node to encrypt the symmetric secret keys, generating a first secret key ciphertext and then uploading to the blockchain; using the private key of the first node to decrypt a numbered ciphertext from the blockchain, and obtaining the ciphertext number of the data block to be inquired of a second node; and when the second node is allowed to inquire, using the public key of the second node to encrypt the corresponding symmetric secret key to generate a second secret key ciphertext, sending to the second node through the blockchain so that the second node decrypts the second secret key ciphertext by using the private key to obtain the corresponding symmetric secret key. in the invention, the safety, the controllability and the restorability of the data are ensured, and simultaneously the efficiency of encryption and decryption is increased.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a data transmission method and device based on alliance chains. Background technique [0002] Blockchain is a new application model that integrates distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. According to the degree of centralization of the blockchain network, blockchains in three different application scenarios are differentiated: [0003] 1. A blockchain that is public on the entire network and has no user authorization mechanism is called a public chain; [0004] 2. Authorized nodes are allowed to join the network, and information can be viewed according to authority, which is often used in inter-institutional blockchains, called alliance chains; [0005] 3. All nodes in the network are in the hands of an organization, which is called a private chain. [0006] From the present point o...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L9/08H04L9/06H04L9/30H04L9/14H04L9/32
CPCH04L9/0631H04L9/0825H04L9/0894H04L9/14H04L9/302H04L9/3247H04L63/0435H04L63/10
Inventor 姚平姚雷吴杰季峰韩松江
Owner NANJING SUNING SOFTWARE TECH CO LTD
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