Patents by Inventor Raja P. Narayanan
Raja P. Narayanan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9432185Abstract: Provided is a method of providing secure communication between an initiator and a responder in a communication network. The method includes providing an encryption key for securing communications between an initiator and a responder in a communications network that includes the initiator generating an initiator Diffie-Hellman computed value, the initiator transmitting the initiator Diffie-Hellman computed value to the responder, the responder generating the encryption key and a responder Diffie-Hellman computed value, the responder transmitting the responder Diffie-Hellman computed value to the initiator, and the initiator generating the encryption key.Type: GrantFiled: June 28, 2013Date of Patent: August 30, 2016Assignee: Microsoft Technology Licensing, LLCInventors: Mohamed Khalil, Raja P. Narayanan, Haseeb Akhtar, Emad A. Qaddoura
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Publication number: 20130290721Abstract: Provided is a method of providing secure communication between an initiator and a responder in a communication network. The method includes providing an encryption key for securing communications between an initiator and a responder in a communications network that includes the initiator generating an initiator Diffie-Hellman computed value, the initiator transmitting the initiator Diffie-Hellman computed value to the responder, the responder generating the encryption key and a responder Diffie-Hellman computed value, the responder transmitting the responder Diffie-Hellman computed value to the initiator, and the initiator generating the encryption key.Type: ApplicationFiled: June 28, 2013Publication date: October 31, 2013Inventors: Mohamed Khalil, Raja P. Narayanan, Haseeb Akhtar, Emad A. Qaddoura
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Patent number: 8505088Abstract: Provided is a method of providing secure communication between an initiator and a responder in a communication network. The method includes presenting a registration request with one or more proposals for dynamically establishing a security association between the initiator and the responder, and receiving a registration response indicating whether any of the one or more proposals have been accepted for the security association.Type: GrantFiled: August 24, 2009Date of Patent: August 6, 2013Assignee: Microsoft CorporationInventors: Mohamed Khalil, Raja P. Narayanan, Haseeb Akhtar, Emad A. Qaddoura
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Publication number: 20090313692Abstract: Provided is a method of providing secure communication between an initiator and a responder in a communication network. The method includes presenting a registration request with one or more proposals for dynamically establishing a security association between the initiator and the responder, and receiving a registration response indicating whether any of the one or more proposals have been accepted for the security association.Type: ApplicationFiled: August 24, 2009Publication date: December 17, 2009Applicant: Nortel Networks LimitedInventors: Mohamed Khalil, Raja P. Narayanan, Haseeb Akhtar, Emad A. Qaddoura
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Patent number: 7590843Abstract: A key exchange for a network architecture. A mobile node that roams over a foreign domain transmits a registration request to a home domain using the foreign domain. The identity of the mobile node within the registration request is encrypted. The home domain receives the registration request and decrypts the mobile node identity. The home domain generates a registration reply that includes encryption keys for encrypting information to be transmitted between and among the home domain, the foreign domain, and the mobile node.Type: GrantFiled: October 4, 2000Date of Patent: September 15, 2009Assignee: Nortel Networks LimitedInventors: Mohamed Khalil, Raja P. Narayanan, Haseeb Akhtar, Emad A. Qaddoura
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Patent number: 7173917Abstract: An improved wireless mobile IP system including an apparatus and method for managing transmission of information. Agent advertisements are used to detect movement of the mobile node and derive care-of addressing information for the Home Agent. Foreign Agents and Home Agents currently periodically broadcast an agent advertisement on the data channel. The claimed system reduces the need for agent advertisements by detecting movement of a mobile user into a new network using either the mobile node or a routine on a low-level protocol layer. After detection of movement, an agent solicitation message is transmitted from the mobile node or from the cell-site transmitter. The mobility agent then transmits a single agent advertisement in response. Derived care-of addressing information will then be registered with the Home Agent to support “tunneling” of communications to the mobile node through the foreign network.Type: GrantFiled: March 31, 2000Date of Patent: February 6, 2007Assignee: Nortel Networks LimitedInventors: Raja P. Narayanan, Mohamed Khalil, Haseeb Akhtar, Emad A. Qaddoura
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Patent number: 7174018Abstract: In an IP-based mobile communications system, the Mobile Node changes its point of attachment to the network while maintaining network connectivity. Security concerns arise in the mobile system because authorized users are subject to the following forms of attack: (1) session stealing where a hostile node hijacks session from mobile node by redirecting packets, (2) spoofing where the identity of an authorized user is utilized in an unauthorized manner to obtain access to the network, and (3) eavesdropping and stealing of data during session with authorized user. No separate secure network exists in the IP-based mobility communications system, and therefore, it is necessary to protect information transmitted in the mobile system from the above-identified security attacks.Type: GrantFiled: June 16, 2000Date of Patent: February 6, 2007Assignee: Nortel Networks LimitedInventors: Basavaraj B. Patil, Raja P. Narayanan, Haseeb Akhtar, Emad A. Qaddoura
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Patent number: 6922404Abstract: A new extensions structure for mobile IP control message extensions is employed to conserve the type field. Certain types of extensions, such as network access identifiers, are initially aggregated and subtypes are employed to identify the precise content of the extension (e.g., mobile node network access identifier, home agent network access identifier, foreign agent network access identifier, etc.). Long and short formats for the new extension structure are defined, with the long format applicable to nonskippable extensions carrying more than 256 bytes and the short format backwards compatible with currently defined skippable extensions with less than 256 bytes of data. This will greatly reduce usage of the type field.Type: GrantFiled: October 13, 2000Date of Patent: July 26, 2005Assignee: Nortel Networks LimitedInventors: Raja P. Narayanan, Mohamed Khalil, Emad A. Qaddoura, Haseeb Akhtar
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Patent number: 6819652Abstract: A method and apparatus in a communications system for processing control messages for a session in a packet-based network within the communications system. A first indicator is set in a control message for handling a session within the communications system through the packet-based network. The control message is sent to a destination within the packet-based network. The control message is provided priority processing within the packet-based network based on the presence of the first indicator. A second indicator is set in a header of a packet used to transport the control message, such that nodes within the packet based network, which do not examine the control message, provide priority processing of the packet in sending the packet through the packet-based network to the destination.Type: GrantFiled: June 21, 2000Date of Patent: November 16, 2004Assignee: Nortel Networks LimitedInventors: Haseeb Akhtar, Lakshminarasimhan Aravamudhan, Emad A. Qaddoura, Raja P. Narayanan, Akram Hosain