| 摘要 |
<P>PROBLEM TO BE SOLVED: To protect information in an electronic device such as a disk drive and a solid-state data storage device from unauthorized external observation and control. <P>SOLUTION: The method includes: generating a statistically unique root key value; storing the root key value in a one-time programmable memory of the device; and isolating firmware in the device from access to the root key value. In general, the root key is used to encrypt other keys in the device. In different aspects, a root key test value, which is utilized to test the root key, and other security features such as a re-purpose number and a cipher block chaining re-purpose value are included to protect the electronic device from unauthorized access. An electronic device that includes these security features is also provided. <P>COPYRIGHT: (C)2009,JPO&INPIT |
