| 发明名称 |
System for enabling lazy-revocation through recursive key generation |
| 摘要 |
A plurality of users may have access to a file. The file is encrypted with a key. Access for a user to the file is revoked. A new key is generated from the current key of the file in response to said revocation, and the file is encrypted with the new key. |
| 申请公布号 |
US7203317(B2) |
申请公布日期 |
2007.04.10 |
| 申请号 |
US20010984927 |
申请日期 |
2001.10.31 |
| 申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
KALLAHALLA MAHESH;RIEDEL ERIK;SWAMINATHAN RAM |
| 分类号 |
H04L9/00;G06F21/00;H04L9/08 |
主分类号 |
H04L9/00 |
| 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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