US 2012/0084845 A1Published application

Fixed client identification system for positive identification of client to server

AssigneeCambridge Interactive Development Corp.

InventorDaniil Utin

Life of this patent

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Abstract

A tamperproof ClientID system to uniquely identify a client machine is invoked upon connection of a client application to a backend. Upon initial connection, the backend issues a unique ClientID containing a checksum. The client application prepares at least two different scrambled versions of the ClientID and stores them in respective predetermined locations on the client machine. Upon subsequent connection to the backend, the client application retrieves and unscrambles the values at the two locations, verifies the checksums and compares the values. If the checksums are both correct and the values match, the ClientID value is sent to the backend, otherwise the client application sends an error code.

Claims9

Dependent claims

A system for positively identifying a client machine running a client application to a backend, comprising

executing a ClientID storage process, including
upon connection by the client application to the backend, generating a unique ClientID containing a checksum at the backend for the client machine,
sending the ClientID to the client application,
reversibly scrambling the ClientID with the client application at the client machine and storing a first scrambled version of the ClientID at a first predetermined location on the client machine, and
reversibly scrambling the ClientID with the client application at the client machine and storing a second scrambled version different from the first version of the ClientID at a second predetermined location on the client machine.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/209,980Filed 15 Aug 2011
Priority: 25 Oct 2002
Published: 5 Apr 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06F 21/31
Authentication, i.e. establishing the identity or authorisation of security principals: user authentication
G06F 21/55
Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems: detecting local…
H04L 63/08
Network architectures or network communication protocols for network security: for authentication of entities
H04L 63/0876
For authentication of entities: based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or…

Family

Application60/421,285Us provisional application · filed 25 Oct 2002
Application10/532,542Continuation · filed 17 Nov 2005
Application12/364,816Continuation · filed 3 Feb 2009
Application13/209,980Continuation
US 2006/0156014 A1Published application
US 2009/0144555 A1Published application
US 7,487,350 B2Related patent
US 8,001,376 B2Related patent
US 8,683,561 B2Related patent
US 2012/0084845 A1This patent

From the US filing history. Foreign family members aren’t listed.

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