Apparatus for authenticating the validity of a device

• US 20070011023A1
• Filed: 09/14/2006
• Published: 01/11/2007
• Est. Priority Date: 07/15/1997
• Status: Abandoned Application

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia
• Application Number:
  US11/520,735
• Publication Number:
  US 20070011023A1
• Time in Patent Office: Days
• US Class Current: 705/50
• CPC Class Codes: B41J 2/01 Ink jet
• CPC Class Codes: B41J 2/14427 Structure of ink jet print heads with thermal bend detached actuators
• CPC Class Codes: B41J 2/16585 for paper-width or non-reciprocating print heads
• CPC Class Codes: B41J 2/17503 Ink cartridges
• CPC Class Codes: B41J 2/17513 Inner structure
• CPC Class Codes: B41J 2/17596 Ink pumps, ink valves
• CPC Class Codes: B41J 2002/041 Electromagnetic transducer
• CPC Class Codes: B41J 2202/21 Line printing
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: G06F 21/79 in semiconductor storage media, e.g. directly-addressable memories
• CPC Class Codes: G06F 21/86 Secure or tamper-resistant housings
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• CPC Class Codes: G06K 1/121 by printing code marks applying code marks to labels B65C9/46; marking or coding completed packages B65B61/26
• CPC Class Codes: G06K 19/06037 multi-dimensional coding
• CPC Class Codes: G06K 19/073 Special arrangements for circuits, e.g. for protecting identification code in memory protection against unauthorised use of computer memory G06F12/14
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06K 7/1417 2D bar codes
• CPC Class Codes: G06Q 30/018 Certifying business or products
• CPC Class Codes: G06Q 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: G07C 11/00 Arrangements, systems or apparatus for checking, e.g. the occurrence of a condition, not provided for elsewhere
• CPC Class Codes: G07C 2011/04 : related to queuing systems
• CPC Class Codes: G11C 11/56 : using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
• CPC Class Codes: H01L 2224/48091 : Arched
• CPC Class Codes: H01L 23/576 : using active circuits
• CPC Class Codes: H01L 2924/00 : Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 : the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/13091 : Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
• CPC Class Codes: H01L 2924/1461 : MEMS
• CPC Class Codes: H04L 2209/043 : of tables, e.g. lookup, substitution or mapping
• CPC Class Codes: H04L 9/3218 : using proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs
• CPC Class Codes: H04L 9/3236 : using cryptographic hash functions
• CPC Class Codes: H04N 1/00127 : Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
• CPC Class Codes: H04N 1/00326 : with a data reading, recognizing or recording apparatus, e.g. with a bar-code apparatus arrangements for the associated working of recording or reproducing apparatus with related apparatus G11B31/00
• CPC Class Codes: H04N 1/0044 : for image preview or review, e.g. to help the user position a sheet
• CPC Class Codes: H04N 1/00965 : using a plug-in memory module, e.g. memory card, memory stick
• CPC Class Codes: H04N 1/2112 : using still video cameras
• CPC Class Codes: H04N 1/2154 : the still video camera incorporating a hardcopy reproducing device, e.g. a printer
• CPC Class Codes: H04N 1/32133 : on the same paper sheet, e.g. a facsimile page header
• CPC Class Codes: H04N 2101/00 : Still video cameras
• CPC Class Codes: H04N 2201/0008 : Connection or combination of a still picture apparatus with another apparatus
• CPC Class Codes: H04N 2201/3222 : of processing required or performed, e.g. forwarding, urgent or confidential handling
• CPC Class Codes: H04N 2201/3261 : of multimedia information, e.g. a sound signal
• CPC Class Codes: H04N 2201/3264 : of sound signals
• CPC Class Codes: H04N 2201/3269 : of machine readable codes or marks, e.g. bar codes or glyphs
• CPC Class Codes: H04N 2201/3276 : of a customised additional information profile, e.g. a profile specific to a user ID
• CPC Class Codes: H04N 2201/328 : Processing of the additional information
• CPC Class Codes: H04N 23/00 : Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 5/2628 : Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Abstract

An apparatus is provided for validating the authenticity of a device. The apparatus comprises a first integrated circuit which: stores a secret key, is configured to generate a random number, and is configured to generate reference information using the generated random number and the secret key. A control system: is configured to receive the reference information from the first integrated circuit, is configured to receive authenticity information from a second integrated circuit positioned on the device whereby the authenticity information is generated by the second integrated circuit using the generated random number and the secret key, and is configured to compare the reference and authenticity information received from the integrated circuits to validate the authenticity of the device.

Claims

1. An apparatus for validating the authenticity of a device, the apparatus comprising:

a first integrated circuit which stores a secret key, is configured to generate a random number, and is configured to generate reference information using the generated random number and the secret key; and

a control system which is configured to receive the reference information from the first integrated circuit, is configured to receive authenticity information from a second integrated circuit positioned on the device whereby the authenticity information is generated by the second integrated circuit using the generated random number and the secret key, and is configured to compare the reference and authenticity information received from the integrated circuits to validate the authenticity of the device.

2. An apparatus as claimed in claim 1, wherein the first integrated circuit is configured to generate the reference information as a function of the generated random number and the secret key.

3. An apparatus as claimed in claim 2, wherein said function is a one-way function.

4. An apparatus as claimed in claim 1, wherein the first integrated circuit is configured to generate a vector of random numbers and is configured select the next sequential random number in the vector with each successive authentication attempt.

5. An apparatus as claimed in claim 4, wherein the first integrated circuit comprises a linear feedback shift register which generates the random number vector.

6. An apparatus as claimed in claim 1, wherein the control system is configured to validate the authenticity of the device if said reference and authenticity information are of equal value.

7. An apparatus as claimed in claim 1, wherein the authenticity information is generated as a function of the generated random number and the secret key.

8. An apparatus as claimed in claim 7, wherein said function is a one-way function.