Countering server-based attacks on encrypted content
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United States of America Patent
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Mar 22, 2016
Issued Date -
N/A
app pub date -
Feb 10, 2014
filing date -
Feb 10, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments of the present invention relate to providing encrypted content to authorized content consumers while providing robust traitor tracing. In one embodiment, a key bundle comprising at least one device key is read. A key block is read. A media key precursor is determined from the key block and the at least one device key. A security program is read. At least one encrypted block key is read. The security program is executed to determine a decrypted block key from the media key precursor and the encrypted block key. Encrypted content is read. The decrypted block key is applied to the encrypted content to obtain decrypted content.
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