Method and apparatus for indexing an inbound security...

Details Method and apparatus for indexing an inbound security... Method and apparatus for indexing an inbound security...

2003-04-21

2008-10-07

Zand, Kambiz (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Central trusted authority provides computer authentication

C726S002000

Reexamination Certificate

active

07434045

ABSTRACT:
Processes are disclosed in which an index value is generated for locating a security association in a security association database, such as an inbound SAD associated with the IPsec set of protocols. The index value is specified for insertion into a Security Parameter Index (SPI) field of a packet header, such as an IPsec header. For packets that are to be secured according to the policies and protocols identified in the header and the security association and that are transmitted to a particular network device or host, the index value is inserted into the SPI field of the packets by a packet sender. The packet is then parsed by a packet receiver, the index value determined from the SPI and used to identify the security association in the SAD, based solely on the index value determined from the SPI. Hence, a simple and efficient mechanism is provided for fast inbound security association lookups.

REFERENCES:
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Kent, S. Atkinson, R. RFC 2401. Networking Group. Security Architecture for the Internet Protocol. http://www.ietf.org/rfc/rfc2401.txt. Accessed on Sep. 6. 2007, p. 46.
R. Thayer, et al., “IP Security, Document Roadmap,” Nov. 1998, Network Working Group, Request for Comments: 2411, http://www.ietf.org/rfc/rfc2411.txt?number=2411, printed Jul. 25, 2003, pp. 1-11.
S. Kent, et al., “Security Architecture for the Internet Protocol,” Network Working Group, Request for Comments: 2401, pp. 1-59.

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