METHOD AND APPARATUS FOR PROTECTING SECURITY PARAMETERS USED BY A SECURITY MODULE
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United States of America Patent
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Issued Date -
Aug 9, 2012
app pub date -
Feb 4, 2011
filing date -
Feb 4, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A security module includes non-volatile memory, a key protection key generator, and volatile memory. The security module performs a method for protecting security parameters that includes: storing a secret key in the non-volatile memory, wherein the secret key is unique to the security module; applying a key split algorithm to a plurality of key split components to generate a key protection key, wherein the plurality of key split components includes the secret key; decrypting an encrypted first key using the key protection key; performing at least one of media encryption or media decryption using the decrypted first key; storing the key protection key and the decrypted first key in volatile memory.
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