公开(公告)号：US20070165860A1

公开(公告)日：2007-07-19

申请号：US11579080

申请日：2005-05-02

申请人： Fukio Handa ,  Yoshihiro Yana ,  Takayuki Chikada ,  Syouzou Niwata

发明人： Fukio Handa ,  Yoshihiro Yana ,  Takayuki Chikada ,  Syouzou Niwata

IPC分类号： H04L9/00

CPC分类号： G07F7/1008 ,  G06Q20/341 ,  G06Q20/355 ,  G06Q20/40975 ,  H04L9/0833 ,  H04L9/0897

摘要： It is possible to issue an IC card storing unique encryption key information in such a manner that re-issuing is enabled and sufficient security can be assured. An IC card provider X delivers an IC card having a group code G(A) to a company A and an IC card having a group code G(B) to a company B. When a company staff α inputs a unique personal code P(α) and performs initialization, in the IC card, calculation is performed according to a predetermined algorithm using the P(α) and G(A). Data uniquely determined by the calculation is stored as encryption key information K(α) in the IC card. Even if the company staff α loses the IC card, it is possible to obtain the IC card having the same encryption key information K(α) as before by performing initialization again by using the IC card delivered by the IC card provider X.

摘要翻译： 可以发行存储唯一加密密钥信息的IC卡，使得能够重新发布并且可以确保足够的安全性。 IC卡提供商X向公司A提供具有组代码G（A）的IC卡和具有组代码G（B）的IC卡到公司B.当公司员工α输入唯一的个人代码P（ α）并执行初始化，在IC卡中，根据使用P（α）和G（A）的预定算法进行计算。 由计算唯一确定的数据作为加密密钥信息K（α）存储在IC卡中。 即使公司人员α失去IC卡，也可以通过使用由IC卡提供商X发送的IC卡再次执行初始化来获得具有与之前相同的加密密钥信息K（α）的IC卡。