CN104077243A - SATA hard disc device encryption method and system - Google Patents
SATA hard disc device encryption method and system Download PDFInfo
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- CN104077243A CN104077243A CN201410326909.6A CN201410326909A CN104077243A CN 104077243 A CN104077243 A CN 104077243A CN 201410326909 A CN201410326909 A CN 201410326909A CN 104077243 A CN104077243 A CN 104077243A
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Abstract
The invention relates to the field of hard disc encryption, in particular to an SATA hard disc device encryption method and system. The method comprises the following steps that a hard disc device is electrified, whether a secret key storage module exists is detected, if the secret key storage module exists, a device encryption module completes secret key loading, and if the secret key storage module does not exist, the step finishes; the device encryption module judges whether a secret key is correct, if the secret key is correct, the hard disc and a computer complete read and write functions, and if the secret key is incorrect, the computer and the hard disc cannot complete read and write. The system comprises the device encryption module for completing encryption and/or decryption of the data transmission between the hard disc and a main board and the secret key storage module for storing the secret key. By means of the SATA hard disc device encryption method and system, the whole disc encryption of the connected hard disc device is achieved, and sensitive data leakage caused by loss or theft of the hard disc device is avoided.
Description
Technical field
The present invention relates to HD encryption field, relate in particular to SATA hard disc apparatus encryption method and system.
Background technology
Information is as a kind of resource, and its ubiquity, sharing, appreciation, handlability and multi-purpose, make it have the meaning of particular importance for the mankind.The essence of information security wants protection information resource to avoid various types of threats, interference and destruction exactly, i.e. the security of guarantee information.According to the definition of ISO (International Standards Organization), the implication of Information Security mainly refers to information integrity, availability, confidentiality and reliability.Information security is the problem that any country, government, department, industry all must be attached great importance to, and is a National Security Strategy can not be ignored.
Current, hard disc apparatus, as the main carriers of Computer Data storage, has comprised mass data information in enterprise, public institution, government offices, and some is height confidential data for these data messages, how to guarantee the safety of these data messages, prevent information leakage and the stolen main bugbear that becomes.
A kind of solid state hard disc data encryption/decryption method and solid state hard disc system are disclosed in patent documentation CN103440209A; the solution of described document is software encryption and protection; complete and add shell by various cryptographic algorithm; but software cryptography is generally used for, in Internet Transmission and Small Scale Software, not being suitable for the data encryption of hard disc apparatus.
Fixed disk data enciphering card and the encipher-decipher method of supporting SATA interface are disclosed in patent documentation CN103345453A, the HD encryption that described document completes by encrypted card mode is only to complete encryption by write software program in encrypted card, once cryptographic algorithm is cracked, cannot stop the leakage of data message and stolen.
Summary of the invention
For the problem occurring in background technology, the invention provides a kind of SATA hard disc apparatus encryption method, for completing the encryption of hard disc apparatus, described method comprises the following steps successively:
Hard disc apparatus powers on, and whether detection key memory module exists;
If described cipher key storage block exists, devices encrypt module completes key loading, if described cipher key storage block does not exist step to finish;
Described devices encrypt module judges that whether described key is correct;
Described key correctly hard disk and computing machine complete read-write capability, the incorrect computing machine of described key and hard disk cannot complete read-write.
Preferably, described key comprises electronic key and personal information key.
In above-mentioned arbitrary scheme, preferably, described personal information key comprises at least one in fingerprint key, the individual random key of inputting.
In above-mentioned arbitrary scheme, preferably, described devices encrypt module, between computer motherboard and hard disk, by data line interception mode, is resolved, encrypts and recombinate Data Transport Protocol.
In above-mentioned arbitrary scheme, preferably, said method comprising the steps of: computing machine sends hard disc data write request; Devices encrypt module reads key from cipher key storage block; Described devices encrypt module is carried out cryptographic calculation to data stream, and the data after described cryptographic calculation are write in hard disk.
In above-mentioned arbitrary scheme, preferably, said method comprising the steps of: computing machine sends the hard disc data request of reading; Devices encrypt module reads key from cipher key storage block; Devices encrypt module is decrypted described hard disc data, and the data after described deciphering are sent to computing machine.
In above-mentioned arbitrary scheme, preferably, described devices encrypt module realizes the encryption of data by cryptographic algorithm.
In above-mentioned arbitrary scheme, preferably, described algorithm comprises aes algorithm.
In above-mentioned arbitrary scheme, preferably, the key of described cipher key storage block storage is random in advance to be generated and writes in electron key by programming.
The present invention also provides a kind of SATA hard disc apparatus encryption system, and for completing the encryption to hard disc apparatus, described system comprises:
Devices encrypt module, for completing encryption and/or the deciphering of data transmission between hard disk and mainboard;
Cipher key storage block, for storage key.
Preferably, described key comprises electronic key and personal information key.
In above-mentioned arbitrary scheme, preferably, described personal information key comprises at least one in fingerprint key, the individual random key of inputting.
In above-mentioned arbitrary scheme, preferably, described devices encrypt module, between computer motherboard and hard disk, by data line interception mode, is resolved, encrypts and recombinate Data Transport Protocol.
In above-mentioned arbitrary scheme, preferably, computing machine is during to hard disk data writing, and described devices encrypt module reads key from cipher key storage block, data stream is carried out to cryptographic calculation and write in hard disk again.
In above-mentioned arbitrary scheme, preferably, when computing machine reads hard disc data, devices encrypt module completes the deciphering of data, and the data after deciphering are sent to computing machine.
In above-mentioned arbitrary scheme, preferably, described devices encrypt module realizes the encryption of data by cryptographic algorithm.
In above-mentioned arbitrary scheme, preferably, the key of described cipher key storage block storage is random in advance to be generated and writes in electron key by programming.
Method and system provided by the invention has been realized the overall encryption to connect hard disc apparatus, prevents from losing or the stolen sensitive data leakage causing because of hard disc apparatus.
Brief description of the drawings
Fig. 1 is according to the schematic diagram of an exemplary embodiment of devices encrypt modular system structure of the present invention.
Fig. 2 is according to the process flow diagram of the hard disc apparatus encryption method shown in Fig. 1.
Fig. 3 is the process flow diagram that reads hard disc data according to the computing machine shown in Fig. 1.
Fig. 4 is the process flow diagram that writes hard disc data according to the computing machine shown in Fig. 1.
Fig. 5 is according to the process flow diagram of another exemplary embodiment of hard disc apparatus encryption method of the present invention.
Embodiment
Describe the present invention in conjunction with exemplary embodiment with reference to the accompanying drawings.
As shown in Figure 1, be according to the schematic diagram of an exemplary embodiment of devices encrypt modular system structure of the present invention.This devices encrypt module is between computer motherboard and hard disk, be used for connecting the two as independent module, computer motherboard is connected with encrypting module by SATA interface, encrypting module is connected with hard disc apparatus by SATA interface, wherein, SATA interface is the abbreviation of Serial ATA, i.e. serial ATA.This is a kind of Novel hard disk interface type that is different from Parallel ATA completely, owing to adopting serial mode transmission data to gain the name.SATA bus is used embedded clock signal, possesses stronger error correcting capability, the difference of its maximum compared with the past is to check transfer instruction (being not only data), if find wrong can automatic straightening, this has improved the reliability of data transmission to a great extent.Simple in structure, support hot plug that serial line interface also has advantages of.
Encrypting module, by data line interception mode, carries out encryption and decryption to SATA data, the Nth power that the figure place of encryption is 2.Wherein, the key storage of using is in outside electron key, and described key is generated at random and programmed by algorithm and writes, and has formed unique key.Key in described electron key has also comprised personal information key simultaneously, for example: individual subscriber finger print information, the information of random input etc., even if losing by other people, electron key obtains, still cannot complete the read-write capability of hard disk, because first need to carry out authentication after insertion electron key.
When use, encrypting module reads random key from electron key, and simultaneous verification personal identification key, is verified SATA data stream is encrypted to computing, is writing hard disc apparatus; When reading out data, be decrypted, send to computing machine.In Fig. 1, clock circuit provides work clock for encrypting module, and power-supply system provides 5V and 3.3V voltage for encrypting module, and kernel control module comprises: CPU, ROM firmware, SATA protocal analysis, cryptographic algorithm and key read in logic.Wherein, CPU is responsible for the software and hardware control of encrypting module, ROM firmware is for writing the software program of whole encrypting module, cryptographic algorithm part from simple to complex, algorithms different in n is provided, as DES, 3DES, RC2, RC4, IDE, RSA, DSA, AES etc., according to the key reading, SATA data stream is encrypted to computing, key reads in logic for reading key or fingerprint from external electrical key, SATA protocal analysis is for resolving the SATA data stream of scratchpad, and to SATA, order is not encrypted, and SATA packet is encrypted and is deciphered.
Encrypting, is to change original information data with certain special algorithm, even if make undelegated user obtain the information of having encrypted, but because not knowing the method for deciphering, still cannot understand the content of information.The basic process of data encryption is exactly to being that file or data are expressly processed by certain algorithm originally; become unreadable one section of code; be commonly referred to " ciphertext "; make it after the corresponding key of input, just can demonstrate original content, reach by such approach the object that protected data is not stolen, read by juridical-person.In the present embodiment, by the key of described encrypting module electron gain key, in hard disc apparatus ablation process, the encryption of complete paired data, obtains ciphertext, in reading out data process, completes deciphering, obtains name literary composition.
In described encrypting module, also comprise interface control logic and high-speed cache, wherein, interface control logic is according to SATA bus standard, the hardware logic of adaptive encrypting module and SATA interface and equipment room.Wherein, high-speed cache is SATA data stream for temporary read-write, its primitive meaning of cache memory (Cache) refers to a kind of RAM that access speed is come soon than general random access/memory body (RAM), generally speaking it uses DRAM technology unlike system memory main body, and use SRAM technology expensive but faster, also there is the title of memory cache body, in technical development of computer process, main memory access speed is always much slow than central processing unit operating speed, the high speed processing ability of central processing unit can not be given full play to, the work efficiency of whole system is affected.Have a lot of methods to can be used to relax the unmatched contradiction of speed between central processing unit and primary memory, as adopt multiple general-purpose registers, multibank interleaving access etc., in memory hierarchy, adopting cache memory is also one of conventional method.
I2C bus, spi bus, fingerprint input and SD/MMC in described encrypting module, are used.Wherein, I2C(Inter-Integrated Circuit) bus is the twin wire universal serial bus of being developed by PHILIPS company, for connecting microcontroller and peripherals thereof.It is a kind of bus standard that microelectronics Control on Communication field extensively adopts.It is a kind of special shape of synchronous communication, has interface line few, and control mode is simple, and device package form is little, and traffic rate is compared with advantages of higher, and I2C bus is supported any IC production run (CMOS, bipolarity).Be connected to transmission of information between the device of bus by serial data (SDA) line and serial clock (SCL) line.Wherein, spi bus is a kind of high speed, full duplex, and synchronous communication bus, and on the pin of chip, only take four lines, and save the pin of chip, in the layout for PCB, save space simultaneously, provide convenience.Fingerprint input is a kind of by the technology that image is processed and mode identification method carries out feature extraction and identification to fingerprint, fingerprint file or photo are transformed to digital picture with opto-electronic input device, by computing machine processing, extract the overall and minutia of fingerprint, and mutual relationship between definite feature, carry out on this basis editor, classification and the storage of file fingerprint, to set up fingerprint database, while supplying to need, retrieve, search and compare.The SD card of using in encrypting module is safe digital card, is a kind of memory device of new generation of based semiconductor fast-flash memory device, and it is used widely on mancarried device, such as digital camera, personal digital assistant (PDA) and multimedia player etc.
The system that the present embodiment provides realized the overall encryption to connect hard disc apparatus, prevented that hard disk is losing or the leakage of sensitive data when stolen.Meanwhile, be the important component part that data are revealed protection (DLP) technology, can be widely used in having on the computing machine of security requirements, be particularly suitable for protecting enterprise's trade secret information and individual privacy.
As shown in Figure 2, for according to the process flow diagram of the hard disc apparatus encryption method shown in Fig. 1, first booting computer powers up hard disc apparatus, now hard disc apparatus completes self-inspection, and self-inspection content comprises whether detection key carrier exists, and described cipher key carrier is HD encryption modular device, encrypting module is between computer motherboard and hard disk, be used for connecting the two as independent module, computer motherboard is connected with encrypting module by SATA interface, and encrypting module is connected with hard disc apparatus by SATA interface.If now monitoring result is that cipher key carrier exists, it is loaded, if now cipher key carrier does not exist, be common hard disc equipment, cannot complete the encryption to hard disk information, step finishes.In key loading procedure, system judges that whether key is correct, and wherein key storage is in outside electron key, described key is for passing through cryptographic algorithm, the random programming in advance generating has write in electron key, in the proof procedure of key, has also comprised the checking to personally identifiable information.For example, individual subscriber finger print information, even if electron key is lost, other people also cannot complete reading hard disk information by key after picking up.
After system equipment judges that key is correct, can complete the encryption to hard disk data writing.Encrypting module is connected with mainboard by SATA interface, the instruction of what receiving computer sent write hard disc data, and described data are encrypted, cryptographic algorithm comprises: DES, 3DES, RC2, RC4, IDE, RSA, DSA, AES etc., wherein, DES algorithm full name is Data Encryption Standard, i.e. data encryption algorithm, and Ta Shi IBM Corporation was in research success in 1975 and publish.The suction parameter of DES algorithm has three: Key, Data, Mode.Wherein Key is totally 64 of 8 bytes, is the working key of DES algorithm; Data is also 64 of 8 bytes, is to want encrypted or decrypted data.DES algorithm becomes the plaintext input block of 64 the ciphertext IOB of 64, and the key that it uses is also 64.Wherein, 3DES claims again Triple DES, is a kind of pattern of des encryption algorithm, and it uses the key of 3 56 to carry out three encryptions to data, and text is divided into 64 big or small text block and then is encrypted.Wherein, RC2 is that its input and output are all 64 bits by the one tradition symmetric block cipher algorithm of famous cryptologist Ron Rivest design.The length of key is variable to 128 bytes from 1 byte.
Completed the encryption of clear data is obtained to ciphertext by above-mentioned cryptographic algorithm, and described ciphertext is write in hard disk, after hard disk is finished using, user can pull up electron key and carry or store.In the time that computing machine reads hard disc data, by encrypting module, the data that exist in hard disk are carried out to corresponding deciphering, be sent to computing machine for showing.
The hard disc apparatus encryption method that the present embodiment provides, complete the encryption to hard disk by HD encryption module and electron key, stores key information in electron key, comprise electronic key and userspersonal information, in the time that user uses, insert electron key, first carry out personal verification, after being verified, complete the loading of electronic key by encrypting module, in the time that computing machine reads hard disc data and writes hard disc data, complete corresponding deciphering and encryption by encrypting module, in the time that user does not use hard disc apparatus, pull up electron key in order to prevent that hard disk information from revealing, other people are opening after computer, because hard disc data now is encrypted, find that hard-disk content is empty, cannot check hard-disk content information, even if find electron key due to the unsuccessful information of also cannot checking of personally identifiable information checking.Described hard disc apparatus encryption method has been carried out rational protection from electronic key and 4 aspects of personal information key of software cryptography algorithm, hardware encryption module and electron key to hard disk information; prevent the leakage of significant data information, reached the object of protection information safety.
As shown in Figure 3, read the process flow diagram of hard disc data for computing machine.In step 301, computing machine sends and reads hard disc data request, and in step 302, devices encrypt module reads key from cipher key storage block, now key is loaded and the deciphering to hard disc data for step 303.In step 304, the hard disc data after deciphering is sent to computer display apparatus by devices encrypt module, completes the read functions of computing machine to hard disc data.
As shown in Figure 4, write the process flow diagram of hard disc data for computing machine.In step 401, computing machine sends to the request of hard disk data writing, and in step 402, devices encrypt module reads key from cipher key storage block, now key is loaded and the encryption to hard disc data for step 403.In step 404, devices encrypt module writes hard disc apparatus, the encryption write-in functions of complete paired data by the data after encrypting.Now the data of hard-disc storage are enciphered data, in use, cannot see the data of storing in hard disk if data are not carried out to corresponding deciphering.
As shown in Figure 5, be the process flow diagram of another exemplary embodiment of hard disc apparatus encryption method of the present invention.In step 501, cipher key storage block random writing electronic key, electronic key now, in disk read-write process, is played into the encryption and decryption of hard disc data; In step 502, cipher key storage block writes personal key, and personal key now comprises that individual subscriber identity information is as fingerprint, can be also the personal key of individual subscriber input simultaneously; When electron key is connected with devices encrypt module be, in step 503, first devices encrypt module verifies personal key, now user need to be used for checking by the fingerprint of typing before or input personal key, after being proved to be successful, in step 504, devices encrypt module is written into electronic key and prepares the read-write for hard disk; If verify unsuccessfully, devices encrypt module cannot be carried out further work, and computing machine also cannot read out the data of hard disk.
In the present embodiment, electron key is carried out to the ciphering process of personal verification, even if electron key is lost or be stolen, accessed hard disc apparatus by people but owing to cannot passing through personal verification, also cannot complete the read-write of hard disk.Simultaneously, if hard disk corruptions need to be repaired to take away and be sent in the process of repairing, now user can complete by personal key the first checking of encrypting module, hard disk can normally be used, but due to the existence of electronic key, repairman cannot see that the content of hard disk can only keep in repair the hardware of hard disk, can well prevent the leakage of hard disc data.
In order to understand better the present invention, in conjunction with specific embodiments the present invention is explained in detail above.But, obviously can carry out different modification and remodeling and not exceed the wider spirit and scope of the present invention that claim limits the present invention.Therefore, above embodiment has exemplary and hard-core implication.
Claims (10)
1.SATA hard disc apparatus encryption method, for completing the encryption of hard disc apparatus, is characterized in that, described method comprises the following steps successively:
Hard disc apparatus powers on, and whether detection key memory module exists;
If described cipher key storage block exists, devices encrypt module completes key loading, if described cipher key storage block does not exist step to finish;
Described devices encrypt module judges that whether described key is correct;
Described key correctly hard disk and computing machine complete read-write capability, the incorrect computing machine of described key and hard disk cannot complete read-write.
2. SATA hard disc apparatus encryption method according to claim 1, is characterized in that, described key comprises electronic key and personal information key.
3. SATA hard disc apparatus encryption method according to claim 1, is characterized in that, described personal information key comprises at least one in fingerprint key, the individual random key of inputting.
4. SATA hard disc apparatus encryption method according to claim 1, is characterized in that, described devices encrypt module, between computer motherboard and hard disk, by data line interception mode, is resolved, encrypts and recombinate Data Transport Protocol.
5. SATA hard disc apparatus encryption method according to claim 4, is characterized in that, described method is further comprising the steps:
Computing machine sends hard disc data write request;
Devices encrypt module reads key from cipher key storage block;
Described devices encrypt module is carried out cryptographic calculation to data stream, and the data after described cryptographic calculation are write in hard disk.
6. SATA hard disc apparatus encryption method according to claim 4, is characterized in that, described method is further comprising the steps:
Computing machine sends the hard disc data request of reading;
Devices encrypt module reads key from cipher key storage block;
Devices encrypt module is decrypted described hard disc data, and the data after described deciphering are sent to computing machine.
7. SATA hard disc apparatus encryption method according to claim 1, is characterized in that, described devices encrypt module realizes the encryption of data by cryptographic algorithm.
8. SATA hard disc apparatus encryption method according to claim 7, is characterized in that, described cryptographic algorithm comprises aes algorithm.
9. SATA hard disc apparatus encryption method according to claim 1, is characterized in that, the key of described cipher key storage block storage is random in advance to be generated and writes in electron key by programming.
10.SATA hard disc apparatus encryption system, for completing the encryption to hard disc apparatus, is characterized in that, described system comprises:
Devices encrypt module, for completing encryption and/or the deciphering of data transmission between hard disk and mainboard;
Cipher key storage block, for storage key.
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| WO2017101122A1 (en) * | 2015-12-18 | 2017-06-22 | 深圳市振华微电子有限公司 | Computer encryption lock having separating management and use |
| CN108776765A (en) * | 2018-06-11 | 2018-11-09 | 山东超越数控电子股份有限公司 | A kind of hard disk data protection method and device |
| CN112865965A (en) * | 2021-02-02 | 2021-05-28 | 安徽量安通信息科技有限公司 | Train service data processing method and system based on quantum key |
| CN116597874A (en) * | 2023-05-13 | 2023-08-15 | 汇钜电科(东莞)实业有限公司 | Mobile hard disk with built-in static discharge sheet and method for preventing static accumulation |
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| CN116597874A (en) * | 2023-05-13 | 2023-08-15 | 汇钜电科(东莞)实业有限公司 | Mobile hard disk with built-in static discharge sheet and method for preventing static accumulation |
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Application publication date: 20141001 |