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:
Feb. 28, 2017
Filed:
Dec. 22, 2014
Applicant:
Marvell International Ltd., Hamilton, BM;
Inventors:
Assignee:
MARVELL INTERNATIONAL LTD., Hamilton, BM;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 12/02 (2009.01); H04W 12/04 (2009.01); H04L 29/12 (2006.01); H04W 80/04 (2009.01);
U.S. Cl.
CPC ...
H04W 12/04 (2013.01); H04W 12/02 (2013.01); H04L 61/6086 (2013.01); H04W 80/045 (2013.01);
Abstract
A method includes, in a receiver, identifying an event that involves replacement of a ciphering key used by the receiver. In response to the event, at least a portion of a payload of an Internet Protocol (IP) packet received by the receiver is deciphered using the replaced ciphering key. A verification is made whether a predefined location in the deciphered portion of the IP packet, which is expected to specify an IP version of the IP packet, indeed specifies a valid IP version. Upon detecting that the location does not specify the valid IP version, a recovery process that recovers from improper replacement of the ciphering key is initiated.