Tamper-proof offline software authorization implementation method

By generating an authorization file on the target computer and checking the authorization information, and combining a randomly generated authorization application code with the target computer's characteristic values, an activation code is dynamically generated. This solves the security problem of offline software authorization, prevents the authorization file from being tampered with and the system time from being spoofed, and improves the security of software authorization on offline computers.

CN121935896APending Publication Date: 2026-04-28XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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Patent Information

Application Number
CN202511839704.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-08
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

In existing offline software licensing methods, licensing information is easily stolen and tampered with, and the determination of the licensing period depends on the local system time, resulting in low security.

Method used

The system generates and manages license files on the target computer, and prevents tampering by checking the license information. It uses a randomly generated license application code bound to the target computer's feature value to dynamically generate an activation code. Combined with the licensed software ID and version information, it performs efficient license management.

Benefits of technology

It achieves tamper-proof protection of license files, improves the security and reliability of offline computer software licensing, and prevents tampering of license information and deception of system time.

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Abstract

The tamper-proof off-line software authorization implementation method aims at solving the safety problems that in the traditional off-line activation code authorization process, an authorization application code is completely generated by a target computer feature value, authorization information is locally stored, the authorization period depends on local system time, and tampering is prone to occurring. The authorization file is prevented from being tampered through the process of checking the authorization information of the local software. An authorization application code random generation process is designed, an authorization application code is bound with a target computer feature value, dynamic generation is carried out, an authorization software ID and authorization version information are added into an activation code generation process and an activation code verification process, and an efficient algorithm is provided for authorization management of different versions of different software. And the tamper-proof and security requirements of software authorization of the offline computer are comprehensively met.
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