Digital signature generation method, device and equipment and storage medium

Abstract

The invention relates to the technical field of transaction verification, and provides a digital signature generation method and device, a computer device and a storage medium. The method comprises: selecting an elliptic curve Ep(a, b) and a base point G, and the order of the base point G being N; obtaining n private keys, calculating a public key P according to a first signature algorithm, n being a natural number larger than 1, and i belonging to {1, 2, ..., n}; acquiring n random numbers ki, and calculating first signature information r according to a second signature algorithm; and according to the n private keys, n random numbers ki and the first signature information r, calculating second signature information s according to a third signature algorithm. According to the method, the public key and the digital signature information are calculated and generated by generating the n private keys and the n random numbers, so that the risk that the private keys are stolen can be effectively reduced, and the property and information security of private key owners is protected. Moreover, the digital signature generated by the digital signature generation method can be applied to a traditional ECDSA signature verification algorithm during signature verification, so that the digital signature generation method can adapt to various application environments.

Description

technical field [0001] The invention relates to the technical field of transaction verification, in particular to a digital signature generation method, device and storage medium. Background technique [0002] The blockchain system is widely used in the registration, circulation and management of digital assets. Through the unique feature of preventing "double spending" of the blockchain, it is guaranteed that the same digital asset will not be consumed multiple times, thereby ensuring the integrity of the entire ecological environment. safety. If digital assets are to be spent, the digital signature of the asset owner must be provided. The current internationally accepted ECDSA signature process is: first select an elliptic curve Ep(a,b) and the base point G; then select a private key k (k<n, n is the order of G), and use the base point G to calculate the public key Key K=kG; then generate a random integer r (r<n), and calculate point R=rG; use the original data and...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a digital signature generation method, device and storage medium, the main purpose of which is to solve the problem that the traditional digital signature generation process relies on a single private key, and once the private key is stolen, the digital signature information is easily leaked

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