发明名称 |
KEY DISTRIBUTION FOR COMMUNICATION NETWORK |
摘要 |
In a cryptosystem, communication terminals and encryptors can be grouped physically and logically. The communication mode can be switched by the encryptor between ciphertext communication and plaintext communication. The encryptor includes the session key memorizing unit for memorizing the session key and the mode switch for switching the communication mode between ciphertext communication and plaintext communication. The key manager distributes the session key generated by the session key generating unit and the valid/invalid information set by the valid/invalid setting unit to each encryptor. The valid/invalid judging unit judges whether the communication data should be sent in ciphertext or plaintext using the mode switch and the valid/invalid information.
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申请公布号 |
KR100215100(B1) |
申请公布日期 |
1999.08.16 |
申请号 |
KR19970000412 |
申请日期 |
1997.01.10 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TAKEDO, NORIKA;SHINODA, SEIICHI;HASEYAMA, TOSHIO |
分类号 |
G09C1/00;H04L9/08;H04L29/06;(IPC1-7):H04L9/08 |
主分类号 |
G09C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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