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发明名称
DIGITAL SIGNATURE SYSTEM
摘要
申请公布号
JPH0382240(A)
申请公布日期
1991.04.08
申请号
JP19890218865
申请日期
1989.08.25
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
OKAMOTO TATSUAKI;OTA KAZUO
分类号
G09C1/00;H04L9/00;H04L9/08;H04L9/32
主分类号
G09C1/00
代理机构
代理人
主权项
地址
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