Source code leak proof failure case (document encryption software)

Use the document encryption software to encrypt the source code, and realize the source code to protect against leaks. The current practice is poor, the following failure cases can be verified:

BYD, Yulong Communications, cool, Chinese communications and so on (are the same company do, the name will not say, ask users to know, Beijing. ）

1) card, slow, blue screen, damaged data;

2) The existence of loopholes, security is not high;

3) The technical controversy continues;

Source code leak proof failure case (document encryption software)