Ordered multi-signature method based on block chain

Abstract

The invention provides an ordered multi-signature method based on a block chain, and the method comprises the steps: firstly a signer generates a public and private key pair for signature, and a public key serves as an address on the block chain of the signer; secondly, the data owner generates a deposite transaction, sets a deposit amount and a signature time interval, aggregates signer public keys needing to be signed and generates a signature sequence, and publishes the messages; then, each signer signs the file in sequence, signature safety is guaranteed by generating a part of public keysused for signature this time, and after signature is completed, the signature is sent to the intelligent contract and the next signer; after the intelligent contract passes the signature, the signergenerates a claim transaction through a deposite transaction, and takes back the deposit; and finally, the intelligent contract sends the final signature to the data owner. By using the aggregation public key, the signature verification time is reduced, and the fair exchange protocol based on the penalty mechanism ensures the high efficiency in the signature process.

Description

technical field

[0001] The invention proposes a block chain-based ordered multi-signature method, which belongs to the field of information security. Background technique

[0002] With the rapid development of modern information technology, the signing of contracts is now more dependent on the Internet. Both parties can use electronic signatures to sign the contract through third-party certification, which has also been legally recognized. Due to the asynchronicity of the electronic contract in the signing process and the long signing process of the orderly multi-signature scheme, once there is a signer who delays the signature, it will inevitably cause economic losses, and the Internet itself lacks certain security maintenance technology, and the electronic contract is spreading. The process faces the danger of being used by lawbreakers, and at the same time, when there is a dispute between the signatories, it also faces the problem that it cannot be verified. In order to ...

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