Invention Grant
- Patent Title: Revocation method and apparatus for secure content
- Patent Title (中): 用于安全内容的撤销方法和装置
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Application No.: US09939896Application Date: 2001-08-27
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Publication No.: US07672903B2Publication Date: 2010-03-02
- Inventor: Lane W. Lee , Timothy R. Feldman , Douglas M. Rayburn , Gary G. Kiwimagi
- Applicant: Lane W. Lee , Timothy R. Feldman , Douglas M. Rayburn , Gary G. Kiwimagi
- Applicant Address: US CO Longmont
- Assignee: DPHI Acquisitions, Inc.
- Current Assignee: DPHI Acquisitions, Inc.
- Current Assignee Address: US CO Longmont
- Agency: Haynes & Boone, LLP.
- Main IPC: G06F21/00
- IPC: G06F21/00

Abstract:
A system and method is provided for revoking a device. A method includes receiving a certificate from the device, the certificate including one or more of fields, at least one of the fields holding a signature, attempting to verify the signature, receiving a revocation list from a source, the revocation list identifying one or more data on the certificate as valid or invalid, the data including at least one of the fields of the certificate; and if one of one or more signatures identified unsuccessfully verified and one or more data is identified as invalid, preventing the transmission of a session key to the device, the session key being required to establish a secure communication channel.
Public/Granted literature
- US20030149668A1 Revocation method and apparatus for secure content Public/Granted day:2003-08-07
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