Cooperative digital signature method and device based on RSA and electronic equipment

Abstract

The invention relates to a cooperative digital signature method and device based on RSA and electronic equipment. The method comprises the following steps: an RSA-based digital signature is realized through cooperation of a first signature entity and a second signature entity, wherein the RSA signature operation is divided into time-consuming operation and safety operation, the first signature entity executes the time-consuming operation, and the second signature entity executes the safety operation, wherein the operation performance of the first signature entity is higher than that of the second signature entity, and the safety performance of the second signature entity is higher than that of the first signature entity; and the user is stored in the second signature entity privately. According to the invention, the user private key is stored in the second signature entity with high security performance, so that the security of the private key is ensured; the time-consuming operation with low security requirement is completed by the first signature entity with high performance, the signature efficiency is improved, and the complete coordinated digital signature can be realized onlyby two entities, so that the realization is simple and convenient. The invention also relates to an RSA-based collaborative digital signature device and electronic equipment.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to an RSA-based cooperative digital signature method, device and electronic equipment. Background technique [0002] The RSA digital signature system is one of the current mainstream digital signature schemes, and it has a large application market in important fields such as finance, securities, and electric power in China. [0003] At present, digital signatures have a wide range of application requirements in various industries at home and abroad, and there are mainly two implementation methods of digital signatures, software implementation and hardware implementation. [0004] Software implementation of RSA digital signature is generally realized by using high-performance CPU or GPU. Through the multi-core or many-core computing advantages of a large number of CPU / GPU, the performance of hundreds of thousands of signatures per second can be achieved. However, when t...

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Problems solved by technology

However, hardware implementation is limited by hardware resources or technological level, and the performance of hardware implementation of digital signatures is relatively low. It can only reach the performance of tens to tens of thousands of signatures per second, and may not be able to cope with some high-concurrency and high-performance scenarios. need

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