Securely erasing flash-based memory
First Claim
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1. A method for use in securely erasing flash-based memory, the method comprising:
- receiving a new version of data for a logical location of a flash-based memory, an old version of the data of the logical location being stored in a first physical location in the flash-based memory;
causing the old version of the data to be subject to an obscure operation; and
causing the new version of the data to be stored in a second physical location in the flash-based memory.
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Abstract
A method is used in securely erasing flash-based memory. A new version of data is received for a logical location of a flash-based memory. An old version of the data of the logical location is stored in a first physical location in the flash-based memory. The old version of the data is caused to be subject to an obscure operation. The new version of the data is caused to be stored in a second physical location in the flash-based memory.
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Citations
19 Claims
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1. A method for use in securely erasing flash-based memory, the method comprising:
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receiving a new version of data for a logical location of a flash-based memory, an old version of the data of the logical location being stored in a first physical location in the flash-based memory; causing the old version of the data to be subject to an obscure operation; and causing the new version of the data to be stored in a second physical location in the flash-based memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for use in securely erasing flash-based memory, the system comprising:
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first logic receiving a new version of data for a logical location of a flash-based memory, an old version of the data of the logical location being stored in a first physical location in the flash-based memory; second logic causing the old version of the data to be subject to an obscure operation; and third logic causing the new version of the data to be stored in a second physical location in the flash-based memory. - View Dependent Claims (16, 17, 18, 19)
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Specification