Anti-Copy and Anti-Digital Simulation in Software Security Key[J]. Journal of Civil and Environmental Engineering, 2000, 22(2): 92-94. DOI: 10.11835/j.issn.1674-4764.2000.02.023.
This paper discussed the basic technique of setting security key and produced group security key to anti-copy and dynamic reading security key to anti digital simulation. These two methods can prevent effectively the software from attacking.