Multi-signature method, signature center, medium and electronic equipment

Abstract

The invention relates to the field of information encryption, and discloses a multi-signature method, a signature center, a medium and electronic equipment, the method is executed by the signature center, the signature center comprises a signature unit and a plurality of signature participants, and the method comprises the following steps: each signature participant acquires a prime number order cyclic group under an elliptic curve equation; the signature participant receives a private key generated by the key generation center according to the identifier of the signature participant; the signature participant obtains a public key of the signature participant by using a formula based on the private key of the signature participant; each signature participant generates a random number, andthe signature unit obtains a target random point by using a formula based on the random number; and each signature participant signs the to-be-signed message based on the target random point accordingto a formula and sends the signed message to the signature unit, and the signature unit synthesizes the signed message to obtain a signature of the to-be-signed message. According to the method, thesignature security and the maintainability of the signature system are improved, the resource consumption during multiple signatures is reduced, and the signature efficiency is improved.

Description

technical field [0001] The present disclosure relates to the technical field of information encryption, and in particular to a multi-signature method, a signature center, media and electronic equipment. Background technique [0002] When the blockchain is running, in order to verify the security of encrypted transaction information, such as verifying the integrity of the information and the certainty of the identity of the information generator, it is often necessary to use a signature algorithm. In order to further improve the security of signatures, multi-signature schemes have also begun to appear. Under the existing technology, the multi-signature scheme proposed by the blockstream (blockstream) team is mainly as follows: each signature participant randomly selects an integer as the private key. key, and then use the private key in the cyclic group to obtain the corresponding public key to obtain the public key set of the signature participant, and then calculate the pub...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the existing technology is that since the private key of the signing party is randomly generated, its security is uncontrollable and difficult to maintain systematically. At the same time, the existing technology needs to calculate the public key commitment, so this link requires a lot of calculations amount, will result in inefficient signature

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