Introduction - If you have any usage issues, please Google them yourself
USB label on the device in the production of physical number, this number has a lifetime unchanged, not the impact of any operation, and can only be read can not write characteristics. So you can use the the USB physical number as the starting point of the encryption scheme design. Physical number as using USB encryption seeds, the use of the algorithm to convert the ciphertext to generate an authentication file additional authentication information in the file. Judge simply login design software flash drive and the current USB flash drives in the license file is consistent current user information in a central database, whether there can be such effective protection of user information, but also to avoid inconvenience to the user information memory