Online and offline circulating unbalanced oil and vinegar signature method

Abstract

The invention discloses an online and offline circulating unbalanced oil and vinegar signature method. The method decomposes a traditional unbalanced oil and vinegar signature process into an offlinepart and an online part, wherein offline steps are independent of a signature message and can be performed in advance, and a circulating computation method is combined and used during a computing process for enhancing performance. When the online part needs the signature, a computing result stored in the offline steps are combined and used for completing final signature operation. The method provided by the invention is an unbalanced oil and vinegar signature scheme based on a multi-variable public key cryptosystem, a lightweight digital signature scheme applicable to low-performance electronic equipment. The method provided by the invention divides an unbalanced oil and vinegar signature algorithm is divided into the offline part and the online part, the computation of the offline steps can be performed in advance, and the online signature process can be accelerated while the energy can be more fully utilized. According to the method provided by the invention, in the computation of the offline steps, the circulating computation method is used, the size of he secret key is greatly reduced, and meanwhile the signature period is shortened.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to an online and offline circulation unbalanced oil and vinegar signature method. Background technique [0002] Cryptography is the core and foundation of information security and is widely used in network communications, e-commerce, banking, national defense and military and other fields. Cryptography includes symmetric cryptography and asymmetric cryptography. Asymmetric cryptography is also known as public key cryptography. [0003] As an important technology in cryptography to protect the authenticity of data, digital signature technology is almost ubiquitous. In addition to servers, personal computers, smartphones and other high-performance devices that use digital signature technology to protect data security, there are many low-performance electronic devices that also require digital signature technology to ensure data security. For example: Wireless Sensor Net...

AI Technical Summary

Problems solved by technology

However, the traditional unbalanced oil-and-vinegar signature scheme still has some shortcomings, such as the key length is relatively large, and it cannot make full use of the ability of some electronic devices to collect energy, etc.

These shortcomings lead to poor performance of the signature scheme on low-performance electronic devices

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