发明名称 Secure updating of integrated circuits
摘要 A method of attempting a write to an entity to cause performance of an action is provided in which a first message is sent to the entity which causes performance of the action and adjustment of initial values in respective security fields of the entity to respective first adjusted values, and a second message is sent to the entity which causes adjustment of the initial values to respective second adjusted values. The security fields have write restrictions which prevent values in the security fields being adjusted, in accordance with the first message, if the initial values have been adjusted in accordance with the second message, and vice versa. The action is only performed when the initial values have been adjusted in accordance with the first message. The respective first adjusted values are different than the respective second adjusted values.
申请公布号 US7996880(B2) 申请公布日期 2011.08.09
申请号 US20100697272 申请日期 2010.01.31
申请人 SILVERBROOK RESEARCH PTY LTD 发明人 WALMSLEY SIMON ROBERT
分类号 G06F7/04;B41J2/05;G06F3/00;G06F17/00;G06F21/00;H04L9/00;H04N1/405 主分类号 G06F7/04
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