Microcode patch authentication
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United States of America Patent
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N/A
Issued Date -
Oct 16, 2003
app pub date -
Apr 12, 2002
filing date -
Apr 12, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Microcode patches are encoded before delivery to a target processor that is to install the microcode patches. The target processor validates the microcode patches before installation. The security of the process may be enhanced by one or more of: 1) performing the validation in a secure memory, 2) using a public/private key pair for encryption and decryption of the microcode patch, 3) using at least one key that is embedded in the target processor and that cannot be read by non-secure software, and 4) using a hash value that is embedded in the target processor to validate at least one non-embedded key.
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