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Block chain privacy protection method and device based on symmetric and asymmetric hybrid encryption

A hybrid encryption and privacy protection technology, applied in instruments, finance, electrical components, etc., can solve problems such as blockchain transaction data encryption, and achieve the effect of improving security and confidentiality

Inactive Publication Date: 2018-06-22
深圳四方精创资讯股份有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0005] In order to solve the above-mentioned defects in the prior art, the purpose of the present invention is to provide a blockchain privacy protection method and device based on symmetric and asymmetric hybrid encryption, which is used to solve the problem of blockchain transaction data encryption

Method used

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  • Block chain privacy protection method and device based on symmetric and asymmetric hybrid encryption
  • Block chain privacy protection method and device based on symmetric and asymmetric hybrid encryption
  • Block chain privacy protection method and device based on symmetric and asymmetric hybrid encryption

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Embodiment Construction

[0048] In order to illustrate the idea and purpose of the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] refer to figure 1 and figure 2 , an embodiment of the present invention proposes a blockchain privacy protection method based on symmetric and asymmetric hybrid encryption, including the following steps:

[0050] S10. Receive a transaction request.

[0051] S11. Obtain an encryption key.

[0052] S12: Obtain the public key of the transaction party with the viewing authority.

[0053] S13. Encrypt the encryption keys separately by using the public key, and upload the blockchain by specifying an identification ID for the key data.

[0054] S14. Encrypt the transaction data by using the encryption key, and upload the encrypted transaction data to the blockchain in association with the identification ID.

[0055] S15. The transaction recipient obtains the corresponding...

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Abstract

The invention discloses a block chain privacy protection method and device based on symmetric and asymmetric hybrid encryption. The method comprises the following steps: receiving a transaction request; acquiring an encryption key; acquiring a public key of a transaction party with the viewing permission; respectively and independently encrypting the encryption key by using the public key, and assigning an identification ID uploading block chain for the key data; encrypting the transaction data by using the encryption key, and associating the encrypted transaction data with the identificationID uploading block chain; acquiring the corresponding key data by the transaction receiver according to the identification ID carried by the transaction data, and decrypting the key data by using theprivate key corresponding to the public key of this party, thereby obtaining the encryption key; and decrypting the encrypted transaction data by using the obtained encryption key to obtain the transaction data. The encryption key is encrypted and decrypted through the public key and the private key, and the transaction data is encrypted and decrypted by using the obtained encryption key, the transaction data is visible for the user with the viewing permission, and the security and the confidentiality of the transaction data are improved.

Description

technical field [0001] The present invention relates to the field of blockchain data encryption, in particular to a blockchain privacy protection method and device based on symmetric and asymmetric hybrid encryption. Background technique [0002] Blockchain is a new type of decentralized protocol that can securely store digital currency transactions or other data. Information cannot be forged or tampered with. Transaction confirmation on the blockchain is completed by all nodes on the blockchain. To ensure its consistency, a public ledger is maintained on the blockchain to store the accounts of all users on the blockchain network. The public ledger is visible to any node on the storage block, thus ensuring that it cannot be forged and tampered with. [0003] In the existing blockchain technology, the user's account balance or sensitive data is directly stored on the block without encryption, resulting in the user's sensitive information being completely exposed on all nodes....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06G06Q40/04
CPCG06Q40/04H04L63/045H04L63/06H04L63/083H04L63/10
Inventor 张华飞梁永甫王超
Owner 深圳四方精创资讯股份有限公司
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