Method of delivering direct proof private keys to devices using an on-line service
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United States of America Patent
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Feb 25, 2014
Grant Date -
Jun 17, 2010
app pub date -
Feb 23, 2010
filing date -
Jul 14, 2004
priority date (Note) -
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Abstract
Delivering a Direct Proof private key to a device installed in a client computer system in the field may be accomplished in a secure manner without requiring significant non-volatile storage in the device. A unique pseudo-random value is generated and stored in the device at manufacturing time. The pseudo-random value is used to generate a symmetric key for encrypting a data structure holding a Direct Proof private key and a private key digest associated with the device. The resulting encrypted data structure is stored on a protected on-line server accessible by the client computer system.
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