发明名称 |
Method and apparatus for providing security in a data processing system |
摘要 |
One embodiment relates to a data processing system having a cryptographic unit. The cryptographic unit includes cryptographic circuitry which performs a first cryptographic function to provide security for a portion of the cryptographic unit, and which performs a second cryptographic function to provide security for a portion of the data processing system external to the cryptographic unit. The cryptographic unit may therefore operate in a normal operating mode and in a secure operating mode. During a first secure operating mode a first key is used to decrypt first security configuration information which includes a second key. During a second secure operating mode, the second key is used to decrypt second security configuration information. The cryptographic unit may include a secure internal memory such that during the secure operating modes, the cryptographic unit may only process descriptors provided from this secure internal memory.
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申请公布号 |
US2005278549(A1) |
申请公布日期 |
2005.12.15 |
申请号 |
US20040865267 |
申请日期 |
2004.06.10 |
申请人 |
TORLA MICHAEL J;TKACIK THOMAS E |
发明人 |
TORLA MICHAEL J.;TKACIK THOMAS E. |
分类号 |
G06F11/30;(IPC1-7):G06F11/30 |
主分类号 |
G06F11/30 |
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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