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

Claim 3:
4. The method as claimed in claim 3, wherein the upper computer comprises the second upper computer and the third upper computer;
the upper computer which is mentioned in steps s1), s2) and s3) specifically is the second upper computer;
generating, by the upper computer, the dispersing factor according to a preset card account number and a card serial number, dispersing the 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 the 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 specifically includes the following steps:
w1) generating, by the third upper computer, the dispersing factor according to the preset card identification information, dispersing the preset master key by using the dispersing factor to obtain the first dispersed key, organizing the first personalized information including the first dispersed key; dispersing the preset second 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 sending the second personalized information to the second upper computer; and
w2) organizing, by the second upper computer, the personalized data package according to the second personalized information.