Patent ID: 11928672
Assignee: FEITIAN TECHNOLOGIES CO., LTD.
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The method as claimed in claim 1, wherein, that the upper computer generates or receives the first personalized information including the first master key; disperses the first master key to obtain the second dispersed key, and organizes the second personalized information including the second dispersed key, and organizes the personalized data package according to the second personalized information is replaced with such features that
generating, by the upper computer, a dispersing factor according to preset card identification information, dispersing a preset first master key by using the dispersing factor to obtain the first dispersed key, organizing the first personalized information including the first dispersed key; dispersing a preset master key by using the dispersing factor to obtain the second dispersed key, and organizing the second personalized information including the second dispersed key; and organizing the personalized data package according to the second personalized information.