Efficient sensitive data uplink algorithm based on block chain

Abstract

The invention discloses a sensitive data efficient uplink algorithm based on a block chain, and belongs to the technical field of block chains. The high-efficiency sensitive data uplink algorithm based on the block chain specifically comprises the following steps: (1) generating an anonymous block resisting distributed denial of service attack; and (2) a data sensitive data uplink and query method based on a threshold signature algorithm. According to the method, a novel anonymous ring signature algorithm is designed, so that each consensus node can obtain the respective out-block sequence under an anonymous condition, the security of data uplink is improved under a sensitive data scene, and the out-block node is prevented from being attacked by distributed denial of service. According to the method, the message complexity of network transmission is reduced by using the threshold signature algorithm, and the data query of the sensitive data needs multi-node authorization auditing, so that the privacy protection of the sensitive data is enhanced while the network communication efficiency of the block chain system is improved.

Description

technical field [0001] The invention belongs to the technical field of blockchain, and in particular relates to a blockchain-based efficient chaining algorithm for sensitive data. Background technique [0002] With the rapid development of Internet infrastructure and information technology, the network scale has gradually expanded and the topology has become increasingly complex. In today's information globalization, the Internet will gradually develop into the fifth largest strategic space after land, sea, air and sky, namely cyberspace. With the continuous advancement of science and technology, cyberspace will have many characteristics such as openness, heterogeneity, mobility, dynamics, and security, and new networks such as the next-generation Internet, 5G mobile communication network, mobile Internet, and the Internet of Things will continue to evolve. form and many new service models such as cloud computing, big data, and social networking. At the same time, cyberspa...

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Problems solved by technology

[0006] Compared with the existing block chain data chaining algorithm, this patent proposes a block chain-based sensitive data efficient On-chain algorithm, the present invention designs a new anonymous ring signature algorithm, so that each consensus node can obtain its own block sequence under anonymous conditions, thereby improving the security of data on-chain in sensitive data scenarios and preventing block-producing nodes from Suffering from distributed denial of service attacks; the threshold signature algorithm is used to reduce the complexity of network transmission messages, and the data query of sensitive data requires multi-node authorization review, which is conducive to improving the network communication efficiency of the blockchain system and strengthening the privacy protection of sensitive data