Apparatus and Method for Securing Data on a Portable Storage Device
First Claim
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1. A storage device comprising:
- an interface to a host device; and
a storage medium including a first storage area associated with a first range of logical addresses and a second storage area associated with a second range of logical addresses;
wherein the storage device is operative to;
offset a logical address received from the host device by an offset parameter to produce an offset logical address if the storage device is operating in a first mode of operation, wherein the logical address is outside of the second range of logical addresses and wherein the offset logical address is in the second range of logical addresses; and
transform the offset logical address to a physical address.
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Abstract
A portable storage device including a microprocessor and a secure user data area, the microprocessor operable to perform on-the-fly encryption/decryption of secure data stored on the storage device under a user password, the microprocessor also operable to exclude access to the secure user data area unless the user password is provided.
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Citations
26 Claims
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1. A storage device comprising:
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an interface to a host device; and a storage medium including a first storage area associated with a first range of logical addresses and a second storage area associated with a second range of logical addresses; wherein the storage device is operative to; offset a logical address received from the host device by an offset parameter to produce an offset logical address if the storage device is operating in a first mode of operation, wherein the logical address is outside of the second range of logical addresses and wherein the offset logical address is in the second range of logical addresses; and transform the offset logical address to a physical address. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for offsetting a logical address by an offset parameter, the method comprising:
performing by a storage device comprising a storage medium including a first storage area associated with a first range of logical addresses and a second storage area associated with a second range of logical addresses; offsetting a logical address received from a host device by an offset parameter to produce an offset logical address if the storage device is operating in a first mode of operation, wherein the logical address is outside of the second range of logical addresses and wherein the offset logical address is in the second range of logical addresses; and transforming the offset logical address to a physical address. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
Specification