Signature verification method

Abstract

The invention provides a signature verification method. The signature verification method comprises steps that: a trusted authority generates public key shared information and generates a corresponding initial private key for each terminal based on the public key shared information, and each terminal obtains the corresponding initial private key and stores the initial private key in a safety device of the terminal, wherein data in the safety devices cannot be changed by the terminals; each safety device periodically updates the current key of each terminal based on the initial private key and a set signature key generation algorithm; a pre-signature function is obtained based on a set pre-signature function generation algorithm, a current key and transaction demand information; a signature is obtained based on a set signature algorithm, the pre-signature function and to-be-signed information, wherein the to-be-signed information comprises the transaction demand information; the signature key generation algorithm, the pre-signature function generation algorithm and the signature algorithm are set based on the public key shared information. According to the scheme of the signature verification method, the signature safety, in particular, the signature safety of mobile agents is improved greatly.

Description

technical field [0001] The invention relates to a computer security technology, in particular to a signature verification method. Background technique [0002] MobileAgent (Mobile Agent) refers to a program that completes tasks on behalf of users, and can move from one host to another autonomously in a distributed network environment. It has the characteristics of mobility, autonomy, and asynchronous computing, which can effectively use bandwidth, reduce network traffic, and improve response time, thus providing a new solution for distributed applications in environments with low bandwidth, high latency, and unstable network connections. It can be widely used in information retrieval, network management, e-commerce and other fields. When the mobile agent performs corresponding operations on behalf of the user, it needs to continuously migrate, complete the work, re-migrate, and finally reproduce the key. Due to this feature, if you use a common signature algorithm, you nee...

AI Technical Summary

Problems solved by technology

Due to this feature, if the common signature algorithm is used, the signature key needs to be carried during the migration process, so that the signature key can easily be stolen by malicious hosts, so the credibility of the signature is greatly reduced

At the same time, on ordinary PCs, due to insufficient security, it is easy to be maliciously invaded, causing the key to be leaked, and then the transaction information is forged, which in turn causes great losses

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