The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2008
Filed:
Apr. 21, 2003
Thomas Enderwick, San Jose, CA (US);
Ashwath Nagaraj, Los Altos, CA (US);
Ramakrishna Rao, San Jose, CA (US);
Benjamin Tseng, Palo Alto, CA (US);
Thomas Enderwick, San Jose, CA (US);
Ashwath Nagaraj, Los Altos, CA (US);
Ramakrishna Rao, San Jose, CA (US);
Benjamin Tseng, Palo Alto, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
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.