Method for controlling information supplied from memory device
First Claim
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1. A method for supplying information on security features of a memory device, the method comprising:
- generating, by a memory device, a response to a query, the memory device storing a control structure which controls access to protected data on the memory device, the control structure including a publicly accessible component and a plurality of confidential components to which access is restricted to only authenticated entities, wherein different authenticated entities have access to different confidential components, such that an authenticated entity is authorized to access part but not all of the plurality of confidential components, and wherein the publicly accessible component and the plurality of confidential components control access to the protected data on the memory device, the generating includes;
(a) if the query is for the publicly accessible component, obtaining the publicly accessible component and including it in the response; and
(b) if the query is for one of the plurality of confidential components, obtaining such confidential component, provided that an entity which sent the query is authenticated to the memory device and is allowed to access this confidential component, and including such obtained confidential component in the response; and
(c) supplying the response to the query.
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Accused Products
Abstract
A memory storing public and confidential information is removably connected to a host device. General information on data stored in memory devices is accessible to the host device without authentication. Only a portion of confidential information stored in the memory device is accessible through the host device to an authenticated entity, where the entity has access rights to such portion. The entity is not able to access other portions of confidential information to which it has no rights. The public and confidential information is stored in a non-volatile storage medium, and a controller controls the supply of information. Preferably, the non-volatile storage medium and the controller are enclosed in a housing.
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Citations
20 Claims
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1. A method for supplying information on security features of a memory device, the method comprising:
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generating, by a memory device, a response to a query, the memory device storing a control structure which controls access to protected data on the memory device, the control structure including a publicly accessible component and a plurality of confidential components to which access is restricted to only authenticated entities, wherein different authenticated entities have access to different confidential components, such that an authenticated entity is authorized to access part but not all of the plurality of confidential components, and wherein the publicly accessible component and the plurality of confidential components control access to the protected data on the memory device, the generating includes; (a) if the query is for the publicly accessible component, obtaining the publicly accessible component and including it in the response; and (b) if the query is for one of the plurality of confidential components, obtaining such confidential component, provided that an entity which sent the query is authenticated to the memory device and is allowed to access this confidential component, and including such obtained confidential component in the response; and (c) supplying the response to the query. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A memory device comprising:
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a non-volatile storage medium storing a control structure which controls access to protected data on the memory device, the control structure including a publicly accessible component and a plurality of confidential components to which access is restricted to only authenticated entities, wherein different authenticated entities have access to different confidential components, such that an authenticated entity is authorized to access part but not all of the plurality of confidential components, and wherein the publicly accessible component and the plurality of confidential components control access to the protected data on the memory device; and a controller in communication with the non-volatile storage medium and operative to generate a response to a query, the generating includes; (a) if the query is for the publicly accessible component, obtaining the publicly accessible component and including it in the response; and (b) if the query is for one of the plurality of confidential components, obtaining such confidential component, provided that an entity which sent the query is authenticated to the memory device and is allowed to access this confidential component, and including such obtained confidential component in the response; and (c) supplying the response to the query. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification
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Current AssigneeSanDisk Technologies LLC (Western Digital Corporation)
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Original AssigneeSandisk Technologies Incorporated (Western Digital Corporation)
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InventorsHoltzman, Michael, Barzilai, Ron, Jogand-Coulomb, Fabrice
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Primary Examiner(s)Zand, Kambiz
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Assistant Examiner(s)GUIRGUIS, MICHAEL M
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Application NumberUS11/557,052Publication NumberTime in Patent Office2,136 DaysField of Search726/27, 726/17, 711/163US Class Current726/27CPC Class CodesG06F 21/6218 to a system of files or obj...G06F 21/78 to assure secure storage of...
