| 发明名称 |
Secure Switch Between Modes |
| 摘要 |
A state sensitive device is described, the device including a state register which stores a record of the effective-state of the device, a mask field having a value which varies according to a value of the state register, and a processor which changes the value of the mask field to a new value of the mask field when there is a change in the value of the state register, wherein, the processor performs a state dependent calculation requiring the value of the mask field as an operand in the state dependent calculation which will yield an incorrect result if the value of the mask field does not properly correspond to the value of the state register. Related methods, systems and apparatus are also described. |
| 申请公布号 |
US2014164788(A1) |
申请公布日期 |
2014.06.12 |
| 申请号 |
US201314100380 |
申请日期 |
2013.12.09 |
| 申请人 |
Cisco Technology Inc. |
发明人 |
Belenky Yaacov;Shen-Orr Chaim |
| 分类号 |
G06F9/30;G06F21/60 |
主分类号 |
G06F9/30 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A state sensitive device comprising:
a state register which stores a record having a value indicative of the effective-state of the device; a mask field having a value which varies according to a value of the state register; and a processor which changes the value of the mask field to a new value of the mask field when there is a change in the value of the state register, wherein, the processor performs a state dependent calculation requiring the value of the mask field as an operand in said state dependent calculation which will yield an incorrect result if the value of the mask field does not properly correspond to the value of the state register.
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| 地址 |
San Jose CA US |
