Title:
METHOD AND DEVICE FOR SECURE DATA ERASURE
Document Type and Number:
WIPO Patent Application WO/2012/100730
Kind Code:
A3
Abstract:
Provided are a method and a device for secure data erasure, the method comprising: receiving instruction information for secure data erasure, the instruction information comprising a logic address of data requiring secure erasure (10); and acquiring, through searching for a pre-maintained mapping relationship, all physical addresses corresponding to the logic address, and erasing data in storage units corresponding to the acquired physical addresses (20). Every time data is written into a storage unit corresponding to a physical address, a mapping relationship between the physical address where the data is written and the logic address is established among other mapping relationships. In the present solution, data is erased from corresponding storage units of all physical addresses corresponding to a logic address where specified data is stored, so that data specified by a user can be completely erased from a storage medium, thereby effectively protecting secure information of the user.
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Inventors:
GAO ZHIHONG (CN)
YANG QINQIN (CN)
LI KE (CN)
YANG QINQIN (CN)
LI KE (CN)
Application Number:
PCT/CN2012/070650
Publication Date:
September 20, 2012
Filing Date:
January 20, 2012
Export Citation:
Assignee:
CHENGDU HUAWEI SYMANTEC TECH (CN)
GAO ZHIHONG (CN)
YANG QINQIN (CN)
LI KE (CN)
GAO ZHIHONG (CN)
YANG QINQIN (CN)
LI KE (CN)
International Classes:
G06F12/14
Foreign References:
| CN101673243A | 2010-03-17 | |||
| CN101030167A | 2007-09-05 | |||
| CN101714065A | 2010-05-26 | |||
| CN1351350A | 2002-05-29 |
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