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Blockchain privacy protection method, system and medium based on trusted execution environment

A technology of execution environment and privacy protection, applied in the direction of digital data protection, payment system, payment system structure, etc., can solve problems such as not wanting to be seen by others, and achieve the effect of protecting privacy

Active Publication Date: 2021-10-01
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For information storage, asymmetric encryption can solve the privacy problem very well. However, for digital currency, the privacy problem and decentralization are a paradox: on the one hand, the user's account balance needs privacy, and he does not want to be stolen by others. See, on the other hand, under the premise of no center, in order to verify the legitimacy of a transaction, other users must know everyone's account balance

Method used

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  • Blockchain privacy protection method, system and medium based on trusted execution environment

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Embodiment Construction

[0047] Such as figure 1 As shown, the blockchain privacy protection method based on the trusted execution environment in this embodiment includes the step of node NodeA, which initiates a transaction to the node NodeB, issuing the transaction message T3 based on the trusted execution environment (nodes Node A and Node B and nodes on each node Installed Trusted Execution Environment TEE), the detailed implementation steps include:

[0048] 1) Node NodeA generates a transaction T0 and sends it to the locally installed trusted execution environment TEEA; transaction T0 generally includes the transaction type, transaction recipient, and transaction content, for example, transaction T0 (transfer, NodeB, 100) indicates, NodeA transfers 100 digital currencies to NodeB.

[0049] 2) The trusted execution environment TEEA verifies the transaction T0, and judges whether the transaction is legal according to the account balance of the node NodeA saved in the local trusted execution envir...

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Abstract

The invention discloses a blockchain privacy protection method, system and medium based on a trusted execution environment. The invention uses a trusted execution environment (TEE) to realize the privacy protection of user accounts in the blockchain. The real transaction content is only The relevant parties of the transaction, NodeA and NodeB, know that the legal transaction generation mechanism, the automatic fee deduction mechanism and the trusted transfer collection mechanism have been realized. The legal transaction generation mechanism is reflected in steps 2) and 3), and the handling fee automatic deduction mechanism is also reflected in Steps 2) and 3), the trusted transfer collection mechanism is reflected in steps 11) and 12). The present invention proposes a TEE-based block chain distributed account book management mechanism, a legal transaction generation mechanism, and an automatic fee deduction mechanism, and uses the trusted execution environment (TEE) to realize the privacy protection of user accounts in the block chain, with privacy protection The advantages of good effect, safe and reliable transaction.

Description

technical field [0001] The present invention relates to blockchain privacy protection technology, in particular to a blockchain privacy protection method, system and medium based on a trusted execution environment. Background technique [0002] Nowadays, the application of blockchain is very extensive, and the more common ones are information storage and digital currency. For information storage, asymmetric encryption can solve the privacy problem very well. However, for digital currency, the privacy problem and decentralization are a paradox: on the one hand, the user's account balance needs privacy, and he does not want to be stolen by others. See, on the other hand, under the premise of no center, in order to verify the legitimacy of a transaction, other users must know everyone's account balance. Therefore, privacy protection in blockchain distributed ledgers has always been a very difficult problem. Contents of the invention [0003] The technical problem to be solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/62G06F21/53G06Q20/38
CPCG06F21/53G06F21/6245G06Q20/3825G06Q20/3829
Inventor 王怀民傅翔史佩昌刘惠丁博米海波冯大为许可乐张迅晖
Owner NAT UNIV OF DEFENSE TECH
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