Cryptography – Communication system using cryptography – Wireless communication
Reexamination Certificate
2007-06-19
2011-11-15
Chai, Longbit (Department: 2431)
Cryptography
Communication system using cryptography
Wireless communication
C713S169000, C713S170000, C713S171000, C726S002000, C726S003000, C726S004000, C726S005000, C726S006000
Reexamination Certificate
active
08059817
ABSTRACT:
Disclosed is a method for encrypted communications. A first IPsec endpoint selects a security association (SA) from a security association database (SAD) by using a selector and then extracts an indexing parameter from SA. The indexing parameter is used to determine an active key location from a key storage database (KSD). Data packets are then encrypted using a key from the active key location. The first IPsec endpoint also forms a security parameter index (SPI) in a header of the data packet by using a keyID from the active key location and transmits the encrypted data packet with the header indicating the SPI to a second IPsec endpoint.
REFERENCES:
patent: 6330562 (2001-12-01), Boden
patent: 2003/0196081 (2003-10-01), Savarda
patent: 2006/0005012 (2006-01-01), Deshpande
PCT International Search Report Dated Jul. 16, 2008.
Australian Rejection for Counterpart Application Dated Dec. 8, 2009.
Australian Notice of Acceptance Dated Apr. 7, 2010.
Australian Letters Patent Dated Aug. 5, 2010.
Mexico Notice of Issuance for Counterpart Application Dated Oct. 1, 2010.
China Rejection for Counterpart Application Dated Oct. 8, 2010.
RFC 4301; Network Working Group; S. Kent, et al. “Security Architecture for the Internet Protocol”, Dec. 2005; pp. 11-61.
TIA Standard; TIA-102.Aacb, Nov. 19, 2002; Project 25-Over the Air Rekeying (OTAR) Operational Description, pp. 8-12.
TIA/EIA Standard; Tiaeia-102.AACA, Apr. 12, 2001; Project 25-Digital Radio Over the Air Rekeying (OTAR) Protocol; Sections 6.1 (pp. 13-17); 7 (pp. 29-31); Annex a (pp. 41-73) and Annex B (pp. 75-146).
Bright Michael W.
Chowdhary Dipendra M.
Kruegel Chris A.
Murrill Larry
Senese Thomas J.
Chai Longbit
Davis Valerie M.
Motorola Solutions, Inc.
Saladi Indira
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