Licensing file generating method, software product protection method and system

Abstract

This invention discloses a generation method for permit documents including the following steps: generating a permit document die plate, storing shared information and product information for a soft product, applying a shared information private key to generate a shared information digital signature, its cleartext data include at least the above mentioned shared information, applying a product information private key to generate its digital signature and storing the signature of the shared information and the product information in a permit document die plate to form a permit document. This invention also relates to a protection method and a system for software products.

Description

Technical field [0001] The invention relates to the field of software product protection, in particular to a method and system for generating a license file and protecting software through the license file. Background technique [0002] With the development of information technology, the software industry has also received more and more attention, and various system software products and application software products have emerged one after another. Generally, software product developers need to invest a huge amount of manpower and material resources in software product research and development. However, once software product development is successful, pirates can copy and sell at low prices with only a small amount of energy, which greatly dampens people's enthusiasm for software product development and seriously hinders the development of the software industry. [0003] In order to curb piracy to protect intellectual property rights, control the application scope of software pro...

AI Technical Summary

Problems solved by technology

The disadvantages of the method are: firstly, the single key introduces high risk and is not suitable for the protection of diversified product forms

The disadvantage of the method is: there is still the problem that the overall signature is not conducive to the expansion of the control strategy

The defect of described method is: at first, still there is the vulnerable shortcoming that single key brings

Secondly, although segmented signatures can support flexible control strategies, due to the isolation of the relationship between the product information segment and the relationship between the product information segment and the license file, it is difficult to effectively avoid the legal segment copy attack of the license file.

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