DYNAMIC ENV SETTING SIGNATURE BY TWO-DIMENSIONAL RANDOM KEY
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Sep 29, 2023
filing date -
Sep 29, 2023
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Abstract
During an initial bootup in a bootloader of an SOC, a random number that is unique to the device is stored in secured storage. During a first bootup, a two-dimensional random key is stored in secure storage for encoding the ENV parameters. During a second (subsequent) bootup, the ENV parameters that are current in unsecured storage are compared against the ENV parameters that previously existed in order to identify a mismatch. A remediation security action can be taken responsive to a mismatch between the baseline digest and a dynamic digest. Ultimately, an operating system can be loaded in the bootloader
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