CN104217180A - Encrypted storage disc - Google Patents
Encrypted storage disc Download PDFInfo
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- CN104217180A CN104217180A CN201410452377.0A CN201410452377A CN104217180A CN 104217180 A CN104217180 A CN 104217180A CN 201410452377 A CN201410452377 A CN 201410452377A CN 104217180 A CN104217180 A CN 104217180A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/72—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits
Abstract
The invention provides an encrypted storage disc. The encrypted storage disk has the functions of data encryption and decryption. The encrypted storage disk comprises a communication interface connector, a bridge control circuit, a common hard disk and an encryption and decryption circuit, wherein when a host stores the data in an encryption and decryption disk, the bridge control circuit sends the data to the encryption and decryption circuit for encrypting, then the bridge control circuit stores the encryption data in the common hard disk so as to realize the function of data encryption; when the host reads the data of the encryption storage disk, the bridge control circuit reads the data from the common hard disk and sends the data to the encryption and decryption circuit for decryption, then the bridge control circuit uploads the decrypted data to the host so as to realize the data decryption function. By adopting the encryption storage disk realized by the technical scheme of the invention, various encryption algorithms and communication interfaces can be flexibly allocated; the market requirements of different levels, different countries and regions can be satisfied.
Description
Technical field
The present invention relates to computer data to store and data security arts, particularly a kind of cryptographic storage dish with data encrypting and deciphering function.
Background technology
All the time, the data security of computer memory device (memory disc) receives much concern, and market is proposed successively the various memory disc with encryption function, such as cryptographic storage card, encrypted U disk, encipher hard disc etc.
The framework of general memory disc is made up of parts such as communication interface, disk controller chip (or bridge joint control chip) and storage mediums.The design proposal of exemplary cryptographic memory disc is that enciphering algorithm module is built in disk controller chip, also namely adopts one chip realization to the storage of data and encryption and decryption functions.There are the following problems and defect for the scheme of above-mentioned one chip: be difficult to compatible various cryptographic algorithm, especially new cryptographic algorithm, therefore the more difficult cryptographic algorithm demand of client meeting various level, country variant or area; The interface communication mode of disk controller chip and computer is more single in addition, and very flexible is difficult to the memory disc realizing different interface type, is also difficult to adopt the communication interface of new generation of more high transfer rate.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the invention provides a kind of cryptographic storage dish, there is the function of the data being stored in common hard disc being carried out to encryption and decryption, various level, different cryptographic algorithm demands can be met.
For solving prior art Problems existing, technical scheme of the present invention is:
A kind of cryptographic storage dish, this cryptographic storage dish has data encryption and decryption function, contains communication interface connector, bridge joint control circuit, common hard disc and encrypting and decrypting circuit; Wherein,
Described encrypting and decrypting circuit is used for being encrypted or decryption processing data;
Described communication interface connector is connected with bridge joint control circuit with main frame;
Described bridge joint control circuit is connected with encrypting and decrypting circuit with common hard disc, carries out data transmission and process for controlling described communication interface connector, encrypting and decrypting circuit and common hard disc.
Preferably, when data are stored in this cryptographic storage dish, under the control of described bridge joint control circuit, these data are first stored in described common hard disc again after described encrypting and decrypting circuit encrypts;
When reading data from this cryptographic storage dish, under the control of described bridge joint control circuit, first reading the data in described common hard disc, then these data are sent to main frame after described encrypting and decrypting circuitry decrypts.
Preferably, described communication interface connector, adopts as any one in lower connector: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC.
Preferably, described bridge joint control circuit comprises processor, interface circuit one, main buffer storage, memory buffer one, memory buffer two, interface circuit two, interface circuit three.
Preferably, described bridge joint control circuit is a circuit of single-chip integrated.
Preferably, described encrypting and decrypting circuit, comprises processor, interface circuit, memory buffer one, memory buffer two and encryption-decryption algorithm module;
Described encryption-decryption algorithm module is for performing encryption or decryption oprerations;
Described interface circuit is for receive from the order of bridge joint control circuit and data and by this deposit data in memory buffer one;
Described memory buffer one and memory buffer two are for data buffer storage, and wherein, described memory buffer one sends the data to encrypting and decrypting circuit; These data for the data of buffer memory after encrypting and decrypting circuit encrypts or deciphering, and are returned to bridge joint control circuit by described interface circuit by described memory buffer two.
Preferably, described encrypting and decrypting circuit is a circuit of single-chip integrated.
Preferably, the encryption of described encrypting and decrypting circuit or decipherment algorithm, adopt any one in following algorithm: the algorithm that polynomial expression scrambler, AES, DES, RSA, ECC, SHA, GOST or Chinese commercial cipher office formulate.
Preferably, described common hard disc is solid state hard disc or HDD hard disk.
Preferably, described interface circuit one adapts with described communication interface connector;
Described interface circuit two adapts with the interface of described common hard disc;
Described interface circuit three adapts with the interface of described encrypting and decrypting circuit;
Described interface circuit one, interface circuit two and interface circuit three adopt any one of following standard interface: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC.
Compared with prior art, technical scheme of the present invention, in data encryption, independent cryptographic algorithm chip is adopted to carry out encryption and decryption to data, configurable many algorithms, the cost of simultaneously upgrading due to the renewal of algorithm is lower, and does not affect the overall technical architecture framework of cryptographic storage dish; In addition in the communication interface and bridge joint of host computer, due to the restriction not by encryption function, bridge joint control circuit can be selected according to the market demand, communication interface and the communication speed of all size can be realized neatly.In a word, adopt technical scheme of the present invention, various cryptographic algorithm and communication interface can be configured neatly, meet the cryptographic storage dish market demand in different levels, country variant and area.
Accompanying drawing explanation
Fig. 1 shows the system architecture diagram according to a kind of cryptographic storage dish of the present invention;
Fig. 2 shows the inside theory diagram of the bridge joint control circuit in Fig. 1;
Fig. 3 shows the inside theory diagram of the encrypting and decrypting circuit in Fig. 1;
Fig. 4 shows the application example of cryptographic storage dish according to the present invention as the encryption mobile storage hard disk of USB interface;
Fig. 5 shows the Another Application example of cryptographic storage dish according to the present invention as the encryption solid state hard disc of SAS interface.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
Fig. 1 shows the system architecture diagram of the embodiment according to a kind of cryptographic storage dish of the present invention, and the cryptographic storage dish (2) in this example contains communication interface connector (21), bridge joint control circuit (22), common hard disc (23) and encrypting and decrypting circuit (24).
Encrypting and decrypting circuit (24) is for being encrypted or decryption processing data;
Communication interface connector (21) is connected with bridge joint control circuit (22) with main frame (1);
Bridge joint control circuit (22) is connected with encrypting and decrypting circuit (24) with common hard disc (23), carries out data transmission and process for controlling described communication interface connector (21), encrypting and decrypting circuit (24) and common hard disc (23); Be responsible for and host computer and the communication between encrypting and decrypting circuit and common hard disc and data transmission.
Data transmission procedure is specific as follows:
When data are stored in this cryptographic storage dish, under the control of described bridge joint control circuit (22), these data are first stored in described common hard disc (23) again after described encrypting and decrypting circuit (24) encryption;
When reading data from this cryptographic storage dish, under the control of described bridge joint control circuit (22), first read the data in described common hard disc (23), then these data are sent to main frame (1) after described encrypting and decrypting circuit (24) deciphering.
Communication interface connector (21) can be a kind of connector, adopts as any one of lower connector: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC.
The data of common hard disc (23) storage encryption can be the hard disks of non-volatile memory medium, also can be the hard disks of magnetic disc storage medium.
Described encrypting and decrypting circuit is a circuit of single-chip integrated, is built-in with enciphering and deciphering algorithm module, can adopt following one: the algorithm that polynomial expression scrambler, AES, DES, RSA, ECC, SHA, GOST or Chinese commercial cipher office formulate.
Fig. 2 show embodiment illustrated in fig. 1 in the inside theory diagram of bridge joint control circuit, bridge joint control circuit (22) can be integrated by separate circuitry, also can be a circuit of single-chip integrated.Comprise processor (2200), interface circuit one (2201), main buffer storage (2202), memory buffer one (2203), memory buffer two (2204), interface circuit two (2205), interface circuit three (2206).
Described interface circuit one (2201), connects outside communication interface connector (21), can adopt the interface of planting as one of given a definition: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC; Described interface circuit two (2204), connects outside common hard disc (23), can adopt the interface of planting as one of given a definition: USB, SCSI, IDE, SATA, PCI-E, SAS; Described interface circuit three (2206), connects outside encrypting and decrypting circuit (24), can adopt the interface of planting as one of given a definition: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC; Described processor (2200) is responsible for and host computer (1) and encrypting and decrypting circuit (24), the communication of common hard disc (23) and data transmission, also controls the running in each interface circuit, each buffer memory district simultaneously; Described main buffer storage (2202), the data of buffer memory and the communication of main frame institute; Described memory buffer one (2203), the data of buffer memory and the communication of common hard disc institute; Described buffer memory two (2204), the data of buffer memory and the communication of encrypting and decrypting circuit institute.
Fig. 3 show embodiment illustrated in fig. 1 in the inside theory diagram of encrypting and decrypting circuit, encrypting and decrypting circuit (24) can be integrated by separate circuitry, also can be a circuit of single-chip integrated, comprise processor (2400), interface circuit (2401), memory buffer one (2403), memory buffer two (2404) and enciphering and deciphering algorithm module (2402).
Described processor (2400), be responsible for and the order communication of bridge joint control circuit (22) and data transmit-receive, be responsible for control interface (2401), memory buffer one (2403), buffer memory two (2404), enciphering and deciphering algorithm module (2402); Described memory buffer one (2403), buffer memory from the data of interface circuit (2401), and sends to enciphering and deciphering algorithm module (2402) to carry out encryption and decryption operation under the control of processor (2400); Described memory buffer two (2404), buffer memory from the data of enciphering and deciphering algorithm module (2402), and sends to bridge joint control circuit (22) under the control of processor (2400), through interface circuit (2401); Described interface circuit (2401), following a kind of interface can be adopted: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC, and mate with the interface circuit three (2206) of bridge joint control circuit (22); Described interface circuit (2401), receives the order from bridge joint control circuit (22) and data, and by deposit data in memory buffer one (2403); Described enciphering and deciphering algorithm module (2402), under the scheduling and controlling of processor (2400), the data of read buffer memory one (2403) carry out cryptographic calculation, again by the data back after encryption to memory buffer two (2404), return to bridge joint control circuit (22) finally by interface circuit (2401).The encryption and decryption computing of data built-in in enciphering and deciphering algorithm module (2402), can adopt following a kind of algorithm: the algorithm that polynomial expression scrambler, AES, DES, RSA, ECC, SHA, GOST or Chinese commercial cipher office formulate.
When main frame (1) is to cryptographic storage dish (2) store data, bridge joint control circuit (22) receives the raw data of from host (1), and sends to encrypting and decrypting circuit (24) to be encrypted; After encrypting and decrypting circuit (24) is encrypted computing to data, the data after encryption are returned to bridge joint control circuit (22); Bridge joint control circuit (22) is stored in enciphered data in common hard disc (23) again, thus realizes the function of data encryption;
When main frame (1) reads data to cryptographic storage dish (2) time, bridge joint control circuit (22) is according to the reading order of main frame (1), read data (encryption) from common hard disc (23), and send encrypting and decrypting circuit (24) to and be decrypted; Data after deciphering, to after decrypt data computing, are returned to bridge joint control circuit (22) by encrypting and decrypting circuit (24); Bridge joint control circuit (22) again the data upload after deciphering to main frame (1), thus realize the function of data deciphering.
Existing composition graphs 1, Fig. 2 and Fig. 3, the encryption and decryption read-write flow process of a kind of cryptographic storage dish embodiment of the present invention and mechanism, embodiment is described below:
1. encryption write flow process:
1) main frame (1) sends write order, and will need the clear data of write, be transferred to cryptographic storage dish (2) by communication interface connector (21);
2) clear data received is buffered in main buffer storage (2202) by interface circuit one (2201);
3) processor (2200) sends encrypted command to encrypting and decrypting circuit (24), and data to be encrypted are dumped to buffer memory two (2204) from main buffer storage (220);
4) data of buffer storage two (2204) are issued encrypting and decrypting circuit (24) by interface circuit three (2206);
5) interface circuit (2401) of encrypting and decrypting circuit (24) by the data that receive stored in memory buffer one (2403);
6) processor (2400) sends the order of cryptographic operation to enciphering and deciphering algorithm module (2402);
7) data of enciphering and deciphering algorithm module (2402) read buffer memory one (2403), and carry out cryptographic calculation;
8) enciphering and deciphering algorithm module (2402) by encryption after data stored in memory buffer two (2404)
9) interface circuit (2401) is under the control of processor (2400), and the enciphered data of memory buffer two (2404) is issued bridge joint control circuit (22);
10) interface circuit three (2206) of bridge joint control circuit (22) by the enciphered data that receives stored in memory buffer two (2204);
11) the enciphered data unloading of memory buffer two (2204) is entered memory buffer one (2203) by processor (2200);
12) interface circuit two (2205) is under processor (2200) controls, by the enciphered data of memory buffer one (2203) write common hard disc (23), thus complete the encryption write operation of data, realize the encryption function to memory disc data.
2. flow process is read in deciphering:
1) main frame (1) sends data read command to cryptographic storage dish (2);
2) bridge joint control circuit (22) is according to the reading order of main frame, reads the data on common hard disc (23);
3) interface circuit two (2205) by the data that receive stored in memory buffer one (2203);
4) the enciphered data unloading of memory buffer one (2203) is entered memory buffer two (2204) by processor (2200);
5) processor (2400) sends the order of decryption oprerations to decipher circuit (24);
6) data of buffer storage two (2204) are issued encrypting and decrypting circuit (24) by interface circuit three (2206);
7) interface circuit (2401) of encrypting and decrypting circuit (24) by the data that receive stored in memory buffer one (2403);
8) data of enciphering and deciphering algorithm module (2402) read buffer memory one (2403), and carry out decrypt operation;
9) enciphering and deciphering algorithm module (2402) by deciphering after data stored in memory buffer two (2404)
10) interface circuit (2401) is under the control of processor (2400), and the data decryption of memory buffer two (2404) is issued bridge joint control circuit (22);
11) interface circuit three (2206) of bridge joint control circuit (22) by the data decryption that receives stored in memory buffer two (2204);
12) the data decryption unloading of memory buffer two (2204) is entered main buffer storage (2202) by processor (2200);
13) interface circuit one (2201) is under processor (2200) controls, by the data decryption of main buffer storage (2202), be transferred to main frame (1) through communication interface connector (21), thus complete the deciphering read operation of data, realize the decipher function to memory disc data.
Fig. 4 has shown the application example of cryptographic storage dish according to the present invention as the encryption mobile storage hard disk of USB interface.Cryptographic storage dish (2) is encryption portable hard drive, and wherein, communication interface connector (21) adopts USB connector; Bridge joint control circuit (22) adopts USB-SATA bridging chip; Encrypting and decrypting circuit (24) adopts encryption chip; The hard-disk interface of common hard disc (23) is SATA interface.
Decipher circuit (24) adopts the encryption chip of band aes algorithm, and inner hard disk then adopts SATA interface hard disk (23).
USB connector (21), for connecting host computer; USB-SATA bridging chip (22) adopts USB communications protocol and host computer communication, and adopt SATA communications protocol and inner SATA interface solid hard disk (23) to read and write, also adopt SATA communications protocol and encryption chip (24) to carry out communication and data transmission; Encryption chip (24) is built-in with aes algorithm, can carry out encryption and decryption computing to data; SATA interface hard disk (23), for common employing magnetic disc is as the hard disk of storage medium, for depositing the data of encryption.
The encryption and decryption read-write mechanism of the embodiments of the invention shown in Fig. 4 and flow process, can refer to explanation embodiment illustrated in fig. 1, do not repeat them here.
Fig. 5 shows according to the Another Application example of cryptographic storage dish of the present invention as the encryption solid state hard disc of SAS interface.The encryption solid state hard disc that cryptographic storage dish (2) is SAS interface, wherein, communication interface connector (21) adopts SAS connector (21); Bridge joint control circuit (22) adopts SAS-SATA bridging chip; Encrypting and decrypting circuit (24) adopts encryption chip; The hard-disk interface of common hard disc (23) is SATA interface.
Decipher circuit adopts the encryption chip (24) of band aes algorithm, and inner hard disk then adopts SATA interface solid hard disk (23).
Described SAS connector (21) is the SAS interface socket of standard, the SAS communication interface of accessible main frame;
Described SAS-SATA bridging chip (22) adopts SAS communications protocol and host computer communication, and adopt SATA communications protocol to read and write SATA interface solid hard disk (23), also adopt PCI-E communications protocol and encryption chip (24) to carry out communication and data transmission;
Described encryption chip (24) is built-in with aes algorithm, can carry out encryption and decryption computing to data;
Described SATA interface solid hard disk (23), adopts flash memory (NAND Flash) as storage medium, deposits the data of encryption.
The encryption and decryption read-write mechanism of the embodiments of the invention shown in Fig. 5 and flow process, can refer to explanation embodiment illustrated in fig. 1, do not repeat them here.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a cryptographic storage dish, it is characterized in that, this cryptographic storage dish has data encryption and decryption function, contains communication interface connector (21), bridge joint control circuit (22), common hard disc (23) and encrypting and decrypting circuit (24); Wherein,
Described encrypting and decrypting circuit (24) is for being encrypted or decryption processing data;
Described communication interface connector (21) is connected with bridge joint control circuit (22) with main frame (1);
Described bridge joint control circuit (22) is connected with encrypting and decrypting circuit (24) with common hard disc (23), carries out data transmission and process for controlling described communication interface connector (21), encrypting and decrypting circuit (24) and common hard disc (23).
2. a kind of cryptographic storage dish according to claim 1, is characterized in that,
When data are stored in this cryptographic storage dish, under the control of described bridge joint control circuit (22), these data are first stored in described common hard disc (23) again after described encrypting and decrypting circuit (24) encryption;
When reading data from this cryptographic storage dish, under the control of described bridge joint control circuit (22), first read the data in described common hard disc (23), then these data are sent to main frame (1) after described encrypting and decrypting circuit (24) deciphering.
3. a kind of cryptographic storage dish according to claim 1 and 2, it is characterized in that, described communication interface connector (21), adopts as any one in lower connector: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC.
4. a kind of cryptographic storage dish according to claim 1 and 2, it is characterized in that, described bridge joint control circuit (22) comprises processor (2200), interface circuit one (2201), main buffer storage (2202), memory buffer one (2203), memory buffer two (2204), interface circuit two (2205), interface circuit three (2206).
5. a kind of cryptographic storage dish according to claim 4, is characterized in that, described bridge joint control circuit (22) is a circuit of single-chip integrated.
6. a kind of cryptographic storage dish according to claim 1 and 2, it is characterized in that, described encrypting and decrypting circuit (24), comprises processor (2400), interface circuit (2401), memory buffer one (2403), memory buffer two (2404) and encryption-decryption algorithm module (2402);
Described encryption-decryption algorithm module (2402) is for performing encryption or decryption oprerations;
Described interface circuit (2401) is for receive from the order of bridge joint control circuit (22) and data and by this deposit data in memory buffer one (2403);
Described memory buffer one (2403) and memory buffer two (2404) are for data buffer storage, and wherein, described memory buffer one (2403) sends the data to encrypting and decrypting circuit (2402); These data for the data of buffer memory after encrypting and decrypting circuit (2402) encryption or deciphering, and are returned to bridge joint control circuit (22) by described interface circuit (2401) by described memory buffer two (2404).
7. a kind of cryptographic storage dish according to claim 6, is characterized in that, described encrypting and decrypting circuit (24) is a circuit of single-chip integrated.
8. according to a kind of cryptographic storage dish described in claim 6, it is characterized in that, the encryption of described encrypting and decrypting circuit (24) or decipherment algorithm, adopt any one in following algorithm: the algorithm that polynomial expression scrambler, AES, DES, RSA, ECC, SHA, GOST or Chinese commercial cipher office formulate.
9. a kind of cryptographic storage dish according to claim 1 and 2, is characterized in that, described common hard disc (23) is solid state hard disc or HDD hard disk.
10. according to a kind of cryptographic storage dish described in claim 4, it is characterized in that, described interface circuit one (2201) adapts with described communication interface connector (21);
Described interface circuit two (2205) adapts with the interface of described common hard disc (23);
Described interface circuit three (2206) adapts with the interface of described encrypting and decrypting circuit (24);
Described interface circuit one (2201), interface circuit two (2205) and interface circuit three (2206) adopt any one of following standard interface: USB, SCSI, IDE, SATA, PCI-E, SAS, RS232, UART, SD or MMC.
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| CN104580181A (en) * | 2014-12-29 | 2015-04-29 | 华为技术有限公司 | Device and method for data encryption and encryption accelerator engine |
| CN104866784A (en) * | 2015-06-03 | 2015-08-26 | 杭州华澜微科技有限公司 | BIOS encryption-based safety hard disk, and data encryption and decryption method |
| CN105468983A (en) * | 2015-11-17 | 2016-04-06 | 北京华虹集成电路设计有限责任公司 | Data transmission method and device based on SATA (Serial Advanced Technology Attachment) interface |
| CN105740733A (en) * | 2016-01-28 | 2016-07-06 | 山东超越数控电子有限公司 | Encrypted mobile hard disk and realization method thereof |
| CN106649156A (en) * | 2016-12-07 | 2017-05-10 | 英业达科技有限公司 | Server |
| CN106845254A (en) * | 2017-01-20 | 2017-06-13 | 杭州华澜微电子股份有限公司 | A kind of encrypted data transmission line for computer |
| CN106970889A (en) * | 2017-05-10 | 2017-07-21 | 山东鸿秦微电子科技有限公司 | A kind of SATA bridge connects chip and its method of work |
| CN112152802A (en) * | 2020-09-09 | 2020-12-29 | 深圳市欢太科技有限公司 | Data encryption method, electronic device and computer storage medium |
| CN112364323A (en) * | 2020-11-16 | 2021-02-12 | 深圳安捷丽新技术有限公司 | High-security storage access method and device based on user iris recognition |
| CN112685352A (en) * | 2020-12-31 | 2021-04-20 | 深圳安捷丽新技术有限公司 | Bridging chip for PCIE-SATA protocol and operation method thereof |
| WO2021190218A1 (en) * | 2020-03-27 | 2021-09-30 | 华为技术有限公司 | Data encryption method and control device |
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