CN113986126B - TCG data deleting method and device based on solid state disk and computer equipment - Google Patents
TCG data deleting method and device based on solid state disk and computer equipment Download PDFInfo
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0652—Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/20—Memory cell initialisation circuits, e.g. when powering up or down, memory clear, latent image memory
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Abstract
The application relates to a TCG data deleting method, device, computer equipment and storage medium based on a solid state disk, wherein the method comprises the following steps: acquiring a TCG data deleting request based on a solid state disk; checking Security Provider for status according to the TCG data delete request and restoring Security Provider to factory status release Security Provider; enabling a data deleting function to erase data of the Bytes Table, and updating the SP Table and attribute information thereof and then storing the SP Table and the attribute information thereof in the NAND; re-reading SP Table information to maintain data consistency; and executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data. The scheme provided by the invention realizes the data deleting function in the TCG write 2.00 protocol, and perfects the support of SSD to the TCG write 2.00 protocol.
Description
Technical Field
The present invention relates to the field of storage systems, and in particular, to a method, an apparatus, a computer device, and a storage medium for TCG data deletion based on a solid state disk.
Background
With the development of Solid State Disk technology, SSD (Solid State Disk) has been widely used in various occasions, and the PC market has gradually replaced the conventional HDD (Hard Disk Drive), so as to provide better experience for users in terms of reliability and performance.
At present, increasing importance is attached to computer security, and more SSD products need to support TCG (Trusted Computing Group) protocol, wherein the TCG Pyrite 2.00 protocol is one of many protocols of TCG, the application of the TCG Pyrite 2.00 protocol in SSD products is wide, and the TCG Pyrite 2.00 protocol needs to support DataRemoval Mechanism Feature (data deletion mechanism feature), however, the scheme capable of supporting the feature in the prior art is not common.
Disclosure of Invention
Accordingly, it is necessary to provide a TCG data deleting method, device, computer equipment and storage medium based on the solid state disk in order to solve the above technical problems.
A TCG data deletion method based on a solid state disk, the method comprising:
acquiring a TCG data deleting request based on a solid state disk;
checking Security Provider the status according to the TCG data delete request and restoring securyprovider to the factory status to release Security Provider;
enabling a data deleting function to erase data of the Bytes Table, and updating the SP Table and attribute information thereof and then storing the SP Table and the attribute information thereof in the NAND;
re-reading SP Table information to maintain data consistency;
and executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data.
In one embodiment, after the step of obtaining the TCG data deletion request based on the solid state disk, the method further includes:
checking a user data deleting mode, wherein the data deleting mode comprises block erasure and copying;
transmitting a user data erasure command to the back end through the Sanitize path;
checking the state of Sanitize waits for the back-end user data erasure to complete and checking Security Provider the state after user data deletion is complete.
In one embodiment, the step of enabling the data deleting function to erase the data of the Bytes tables and update the SP tables and their attribute information and then store the updated SP tables in the NAND further includes:
enabling a data deletion function erases data of Bytes tables including MBR tables and DataStore tables.
In one embodiment, the step of executing the background program after all tasks of the solid state disk are done and in an idle state to complete the function of deleting data further includes:
after the data delete function has been completed, the state of the state machine is changed to disable.
A TCG data deletion apparatus based on a solid state disk, the apparatus comprising:
the acquisition module is used for acquiring a TCG data deleting request based on the solid state disk;
a restoration module for checking the state of the security provider according to the TCG data deletion request and restoring Security Provider to a factory state to release Security Provider;
the enabling module is used for enabling the data deleting function to erase the data of the Bytes tables, updating the SP tables and attribute information thereof and then storing the SP tables and the attribute information thereof in the NAND;
the re-reading module is used for re-reading the SP Table information to keep the consistency of the data;
and the execution module is used for executing a background program after all tasks of the solid state disk are done and are in an idle state so as to complete the function of deleting data.
In one embodiment, the apparatus further comprises a data deletion module for:
checking a user data deleting mode, wherein the data deleting mode comprises block erasure and copying;
transmitting a user data erasure command to the back end through the Sanitize path;
checking the state of Sanitize waits for the back-end user data erasure to complete and checking Security Provider the state after user data deletion is complete.
In one embodiment, the enabling module is further configured to:
enabling a data deletion function erases data of Bytes tables including MBR tables and DataStore tables.
In one embodiment, the execution module is further configured to:
after the data delete function has been completed, the state of the state machine is changed to disable.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any one of the methods described above when the computer program is executed.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of any of the methods described above.
The TCG data deleting method, the device, the computer equipment and the storage medium based on the solid state disk acquire the TCG data deleting request based on the solid state disk; checking Security Provider status according to the TCG data delete request and restoring Security Provider to factory status to release securyprovider; enabling a data deleting function to erase data of the Bytes Table, and updating the SP Table and attribute information thereof and then storing the SP Table and the attribute information thereof in the NAND; re-reading SP Table information to maintain data consistency; and executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data. The scheme provided by the invention realizes the data deleting function in the TCG write 2.00 protocol, and perfects the support of SSD to the TCG write 2.00 protocol.
Drawings
FIG. 1 is an invention conception diagram of a TCG data deleting method based on a solid state disk in the invention;
FIG. 2 is a flow chart of a method for deleting TCG data based on a solid state disk in one embodiment;
FIG. 3 is a flowchart of a method for deleting TCG data based on a solid state disk in another embodiment;
FIG. 4 is a flowchart of a TCG data deleting method based on a solid state disk according to still another embodiment;
FIG. 5 is a block diagram of a TCG data deleting device based on a solid state disk in one embodiment;
FIG. 6 is a block diagram of a TCG data deleting device based on a solid state disk in another embodiment;
fig. 7 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
At present, increasing importance is attached to computer security, and more SSD products need to support TCG (Trusted Computing Group) protocol, wherein the TCG Pyrite 2.00 protocol is one of many protocols of TCG, the application of the TCG Pyrite 2.00 protocol in SSD products is wide, and the TCG Pyrite 2.00 protocol needs to support DataRemoval Mechanism Feature (data deletion mechanism feature), however, the scheme capable of supporting the feature in the prior art is not common.
Based on the method, the invention provides a TCG data deleting method based on the solid state disk. Specifically, refer to the inventive concept diagram of the TCG data deletion method based on the solid state disk shown in fig. 1. First, SP (Security Provider) is restored to factory settings and the data delete function is enabled. Then, the disk is waited for all tasks to be completed, and is in an idle state. And finally, executing a background program to complete the function of deleting the data.
In one embodiment, as shown in fig. 2, there is provided a TCG data deleting method based on a solid state disk, the method including:
step 202, obtaining a TCG data deleting request based on a solid state disk;
step 204, checking the state of Security Provider according to the TCG data delete request and restoring Security Provider to the factory state to release Security Provider;
step 206, enabling the data deleting function to erase the data of the Bytes tables, and updating the SP tables and the attribute information thereof and then storing the SP tables in the NAND;
step 208, re-reading the SP Table information to maintain the consistency of the data;
step 210, executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data.
In this embodiment, a TCG data deleting method based on a solid state disk is provided, and the specific implementation process of the method is as follows:
first, a TCG data deletion request based on the solid state disk is acquired, the state of Security Provider is checked according to the TCG data deletion request, and Security Provider is restored to the factory state to release Security Provider.
Specifically, a user data erase command may be sent to the backend through the Sanitize path. The state of Sanitize is then checked, waiting for the back-end user data erasure to complete. Sanitize is a user data delete command defined by the NVMe standard protocol. After the data erasure of the user is completed, the state of SP (Security Provider) is checked, the SP is restored to the default factory state, and the SP is released.
Then, the enable data delete function erases the data of Bytes tables, and updates SP (Security Provider) tables and their attribute information and saves them in the NAND. Then, the SP Table information is read again to maintain the consistency of the data.
In one embodiment, the step of enabling the data deletion function to erase the data of the Bytes tables and updating the sptables and their attribute information and then storing the updated sptables in the NAND further includes: enabling the data delete function erases data of Bytes tables, including MBR (Master Boot Record) tables and DataStore tables.
And finally, executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data.
In the embodiment, a TCG data deleting request based on a solid state disk is obtained; checking Security Provider for status according to the TCG data delete request and restoring Security Provider to factory status release Security Provider; enabling a data deleting function to erase data of Bytes tables, and updating SPtables and attribute information thereof and then storing the SPtables in NAND; re-reading SP Table information to maintain data consistency; and executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data. The scheme realizes the data deleting function in the TCG write 2.00 protocol, and improves the support of SSD to the TCG write 2.00 protocol.
In one embodiment, as shown in fig. 3, a TCG data deleting method based on a solid state disk is provided, where after the step of obtaining a TCG data deleting request based on a solid state disk, the method further includes:
step 302, checking a user data deleting mode, wherein the data deleting mode comprises block erasure and copying;
step 304, transmitting a user data erasure command to the back end through the Sanitize path;
in step 306, the state of saitize is checked to wait for the back-end user data erasure to complete, and the state of Security Provider is checked after the user data deletion is completed.
In one embodiment, the step of executing the background program after all tasks of the solid state disk are done and in an idle state to complete the function of deleting data further includes: after the data delete function has been completed, the state of the state machine is changed to disable.
Referring to fig. 4, in this embodiment, a method for completely implementing TCG data deletion based on a solid state disk is provided, where the specific implementation steps of the method are as follows:
step 1, checking a user data deleting mode, namely block erasing and copying.
And step 2, transmitting a user data erasure command to the back end through the Sanitize path.
And step 3, checking the state of Sanitize, and waiting for the completion of the data erasure of the back-end user.
And 4, after the user data is erased, checking the state of the SP, restoring the SP to a default factory state, and releasing the SP.
And 5, erasing data of the Bytes Table, wherein the Bytes Table comprises MBR (Membrane Bio-reactor) tables and DataStore tables.
And step 6, updating the SP Table and the attribute information thereof, and storing the SP Table and the attribute information thereof into the NAND.
And 7, re-reading the SP Table information, and keeping data consistency.
And 8, the data deleting function is completed, and the state of the state machine is changed to be disable.
It should be understood that, although the steps in the flowcharts of fig. 1-4 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 1-4 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily occur sequentially, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or steps.
In one embodiment, as shown in fig. 5, there is provided a TCG data deleting apparatus 500 based on a solid state disk, the apparatus including:
the acquiring module 501 is configured to acquire a TCG data deletion request based on a solid state disk;
a restoration module 502, configured to check a state of the security provider according to the TCG data deletion request, and restore Security Provider to a factory state, and release Security Provider;
an enabling module 503, configured to enable a data deletion function to erase data of Bytes tables, and update SP tables and attribute information thereof, and store the updated SP tables in NAND;
a re-reading module 504, configured to re-read the SP Table information to maintain data consistency;
and the execution module 505 is used for executing a background program after all tasks of the solid state disk are done and are in an idle state so as to complete the function of deleting data.
In one embodiment, as shown in fig. 6, there is provided a TCG data deleting apparatus 500 based on a solid state disk, the apparatus further including a data deleting module 506 configured to:
checking a user data deleting mode, wherein the data deleting mode comprises block erasure and copying;
transmitting a user data erasure command to the back end through the Sanitize path;
checking the state of Sanitize waits for the back-end user data erasure to complete and checking Security Provider the state after user data deletion is complete.
In one embodiment, the enabling module 503 is further configured to:
enabling a data deletion function erases data of Bytes tables including MBR tables and DataStore tables.
In one embodiment, the execution module 505 is further to:
after the data delete function has been completed, the state of the state machine is changed to disable.
For specific limitation of the TCG data deleting device based on the solid state disk, reference may be made to the limitation of the TCG data deleting method based on the solid state disk hereinabove, and the description thereof will not be repeated here.
In one embodiment, a computer device is provided, the internal structure of which may be as shown in FIG. 7. The computer device includes a processor, a memory, and a network interface connected by a device bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The nonvolatile storage medium stores an operating device, a computer program, and a database. The internal memory provides an environment for the operation of the operating device and the computer program in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements a solid state disk-based TCG data deletion method.
It will be appreciated by those skilled in the art that the structure shown in fig. 7 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided that includes a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the method embodiments above when executing the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the above method embodiments.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. The TCG data deleting method based on the solid state disk is characterized by comprising the following steps of:
acquiring a TCG data deleting request based on a solid state disk;
checking Security Provider for status according to the TCG data delete request and restoring Security Provider to factory status release Security Provider;
enabling a data deleting function to erase data of the Bytes Table, and updating the SP Table and attribute information thereof and then storing the SP Table and the attribute information thereof in the NAND;
re-reading SP Table information to maintain data consistency;
and executing a background program after all tasks of the solid state disk are done and are in an idle state, so as to complete the function of deleting data.
2. The TCG data deletion method based on a solid state disk according to claim 1, further comprising, after the step of obtaining the TCG data deletion request based on a solid state disk:
checking a user data deleting mode, wherein the data deleting mode comprises block erasure and copying;
transmitting a user data erasure command to the back end through the Sanitize path;
checking the state of Sanitize waits for the back-end user data erasure to complete and checking Security Provider the state after user data deletion is complete.
3. The TCG data deleting method based on the solid state disk of claim 1, wherein the step of enabling the data deleting function to erase the data of Bytes tables and to update the SP tables and their attribute information and store the updated SP tables in the NAND further comprises:
enabling a data deletion function erases data of Bytes tables including MBR tables and DataStore tables.
4. The TCG data deleting method based on a solid state disk according to any one of claims 1 to 3, wherein the step of executing a background program after all tasks of the solid state disk are completed and in an idle state to complete a function of deleting data further includes:
after the data delete function has been completed, the state of the state machine is changed to disable.
5. A TCG data deleting device based on a solid state disk, the device comprising:
the acquisition module is used for acquiring a TCG data deleting request based on the solid state disk;
a restoration module for checking the state of Security Provider according to the TCG data delete request and restoring Security Provider to the factory state release Security Provider;
the enabling module is used for enabling the data deleting function to erase the data of the Bytes tables, updating the SP tables and attribute information thereof and then storing the SP tables and the attribute information thereof in the NAND;
the re-reading module is used for re-reading the SP Table information to keep the consistency of the data;
and the execution module is used for executing a background program after all tasks of the solid state disk are done and are in an idle state so as to complete the function of deleting data.
6. The TCG data deletion apparatus based on a solid state disk of claim 5, further comprising a data deletion module configured to:
checking a user data deleting mode, wherein the data deleting mode comprises block erasure and copying;
transmitting a user data erasure command to the back end through the Sanitize path;
checking the state of Sanitize waits for the back-end user data erasure to complete and checking Security Provider the state after user data deletion is complete.
7. The TCG data deleting apparatus based on a solid state disk of claim 5, wherein the enabling module is further configured to:
enabling a data deletion function erases data of Bytes tables including MBR tables and DataStore tables.
8. The TCG data deleting apparatus based on a solid state disk of any one of claims 5-7, wherein the execution module is further configured to:
after the data delete function has been completed, the state of the state machine is changed to disable.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any one of claims 1 to 4 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 4.
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