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发明名称
METHOD AND SYSTEM FOR CONTROLLING KEY FOR ELECTRONIC SIGNATURE
摘要
申请公布号
EP0898260(A4)
申请公布日期
2004.05.19
申请号
EP19980900392
申请日期
1998.01.16
申请人
NTT DATA CORPORATION;NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人
TAKAHASHI, YOSHIO;MORIBATAKE, HIDEMI
分类号
H04L9/32;(IPC1-7):H04L9/32
主分类号
H04L9/32
代理机构
代理人
主权项
地址
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