发明名称 |
KEY STORAGE AND REVOCATION IN A SECURE MEMORY SYSTEM |
摘要 |
A technique for providing access to a first storage structure of a system includes exposing a first key of a plurality of first keys stored in a second storage structure in response to a select code based on a plurality of corresponding select records stored in one-time programmable storage elements of the second memory structure. The technique includes providing the first key as a current first key of a memory access controller. Only one of the plurality of first keys stored in the second storage structure may be exposed at a time and other first keys of the plurality of first keys stored in the second storage structure are inaccessible from the second storage structure at the time. |
申请公布号 |
US2016078251(A1) |
申请公布日期 |
2016.03.17 |
申请号 |
US201414487560 |
申请日期 |
2014.09.16 |
申请人 |
Freescale Semiconductor, Inc. |
发明人 |
Soja Richard;Amedeo Nancy H.;Strauss Timothy J. |
分类号 |
G06F21/72;H04L9/08;G06F21/82 |
主分类号 |
G06F21/72 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus comprising:
a memory controller configured to provide information from a first storage structure in response to authentication of an access to the first storage structure, the authentication being based on a current first key of a plurality of first keys; a second storage structure configured to store the plurality of first keys and a plurality of corresponding select records in corresponding one-time programmable storage elements; and a key controller configured to expose, to the memory controller, a first key of the plurality of first keys stored in the second storage structure, in response to a select code based on the plurality of corresponding select records, the memory controller being configured to use the first key as the current first key. |
地址 |
Austin TX US |