Signature method and system for block chain

A blockchain and block technology, applied in the field of blockchain signature methods and systems, can solve the problem of occupying large storage space and achieve the effect of saving storage space

Inactive Publication Date: 2020-02-14
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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Problems solved by technology

[0004] The embodiment of this specification provides a block chain signature method and system to solve the problem that the number of signatures stored in

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  • Signature method and system for block chain
  • Signature method and system for block chain
  • Signature method and system for block chain

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of this specification clearer, the technical solution of this specification will be clearly and completely described below in conjunction with specific embodiments of this specification and corresponding drawings. Apparently, the described embodiments are only some of the embodiments in this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this specification.

[0027] The technical solutions provided by each embodiment of this specification will be described in detail below in conjunction with the accompanying drawings.

[0028] In order to solve the problem that the number of signatures stored in the existing consensus-participating blocks will increase linearly with the number of consensus backup nodes, resulting in the large storage space occup...

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Abstract

The invention discloses a signature method and system for a block chain. The method comprises the steps that a consensus main node initiates a consensus proposal for a to-be-consensus proposal; a plurality of consensus backup nodes perform consensus on the to-be-consensus proposal; the consensus main node receives a plurality of signatures after the plurality of consensus backup nodes propose consensus for the to-be-consensus; the consensus master node verifies the plurality of signatures based on a plurality of public keys corresponding to the plurality of consensus backup nodes; and if the consensus main node verifies the plurality of signatures successfully and the number of the plurality of signatures is greater than twice of the number of failure nodes in all consensus backup nodes inthe blockchain, the consensus main node aggregates the plurality of signatures to obtain a target signature.

Description

technical field [0001] This document relates to the field of computer technology, in particular to a blockchain signature method and system. Background technique [0002] At present, for blocks generated based on the Practical Byzantine Fault Tolerance (PBFT) consensus algorithm, usually at least 2f+1 (f is the number of failed nodes) nodes participating in the consensus must sign the block to determine the participation The legitimacy of the consensus block. This means that at least 2f+1 signatures are stored in each consensus block. [0003] As the number of nodes increases, the number of signatures stored in the blocks participating in the consensus also increases linearly. This will lead to the larger and larger space occupied by the signatures stored in the block. Therefore, how to improve the signature method still requires further solutions. Contents of the invention [0004] The embodiment of this specification provides a block chain signature method and system...

Claims

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Application Information

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IPC IPC(8): H04L9/06H04L9/08
CPCH04L9/0643H04L9/0825
Inventor 孙赫
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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