发明名称 |
Key management method |
摘要 |
A key management method to prevent illegal eavesdropping in a network system. Keys of the network system are divided into several family subkeys and several communication subkeys. A plurality of trusted-key centers are provided for respectively preserving a part of the family subkeys and one of the communication subkeys, and generating a one-way hash value involving the preserved communication subkey and an open information. Each of the trusted-key centers passes the hash value to an eavesdropper according to an authority certificate. Each of the trusted-key centers interchanges the preserved family subkeys according to the authority certificate to obtain a session key which is passed to the eavesdropper. The eavesdropper combines all the hash values from the trusted-key centers to obtain a corresponding communication key which is accompanied by the session key to eavesdrop an authorized communication.
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申请公布号 |
US6658114(B1) |
申请公布日期 |
2003.12.02 |
申请号 |
US19990373081 |
申请日期 |
1999.08.11 |
申请人 |
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE |
发明人 |
FARN KWO-JEAN;CHAO CHENG-TSUNG;HSU CHI-KUO;SONG CHEN-HWA |
分类号 |
H04L9/08;(IPC1-7):G06F1/24 |
主分类号 |
H04L9/08 |
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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