CN1912883A - Electronic media reading USB - Google Patents
Electronic media reading USB Download PDFInfo
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- CN1912883A CN1912883A CNA2006100296311A CN200610029631A CN1912883A CN 1912883 A CN1912883 A CN 1912883A CN A2006100296311 A CNA2006100296311 A CN A2006100296311A CN 200610029631 A CN200610029631 A CN 200610029631A CN 1912883 A CN1912883 A CN 1912883A
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- media reading
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Abstract
This invention relates to an electronic media reader reading for survival including a primary controller, a USB KEY part and a reading for survival part, in which, the reading for survival accesses with PC via the primary controller and carries out identity authentication by the safety operation of the USB KEY part or carries out ciphering/deciphering operation to the data of electronic reader in the reading part.
Description
Technical field
The present invention relates to the equipment of reading of depositing of electronic data, particularly relate to the electronic media reading USB device.
Background technology
Present paper media can only offer the service of consumer's complanation, and its circulation way is subjected to the restriction of time, region and capacity etc., can't give consumer's vision, the sense of hearing, in addition the sense of touch aspect shock and enjoyment.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of electronic media reading USB device for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: the electronic media reading USB device, it is characterized in that, comprise master controller, USB KEY part, deposit and read part, described storage reader is visited mutually by master controller and PC, and is carried out authentication or carried out the enciphering/deciphering operation to depositing the electronic medium reading matter data of reading in the part by the safe operation of USB KEY part.
Be provided with the synchronous high-speed acquisition chip in the described master controller, be provided with smart card module in the described USB KEY part, described depositing reads to be provided with some NAND Flash sheets in the part, and this is deposited the capacity of reading part and is determined by employed NAND Flash size.
Described synchronous high-speed acquisition chip is:
Have 32KB high density Flash program area, read/writable protection, and can online MacromediaFlash deposit and read;
Have 5KB RAM district, wherein 256 bytes can be used for storehouse;
External 12MHz crystal oscillator, inner phaselocked loop can produce 48MHz USB clock;
The dual power supply management can be automaticallyed switch between usb bus power supply and powered battery;
Programmable builtin voltage adjuster can adapt to the card of different voltage requests;
47 programmable I/O mouths;
Support the 12Mbps full speed USB port of DMA;
Mass storage interface (Mass StorageInterface) with DTC (Data Transfer Coprocessor), various memory devices be can support, Compact Flash, Multimedia Card, SecureDigital Card, SmartMedia Card, Sony Memory Stick, NAND Flash and ATA peripheral hardware etc. comprised;
Support communication interfaces such as SPI and I2C;
House dog and 2 16 bit timing devices with output function are arranged;
Support smart card ISO/IEC78163 interface.
Described USB KEY partly adopts HID (Human Interface Device, human interface device) agreement, and carries out data transmission by the full speed USB port.
Described depositing read part employing BOT (Bulk Only Transport) Data Transport Protocol, and promptly this is deposited and reads partly to be Mass Storage equipment.
The interface of described smart card module is by software simulation emulation ISO/IEC78163 interface, and the support of T=0 or T=1 agreement is realized by software.
Described safe operation comprises following mode according to the difference of security needs:
A. authentication mode: call the KEY function by general-purpose interface, keep relevant safe condition (comprising authentication result) and operation flag in the synchronous high-speed data acquisition internal memory, when calling Mass Storage function operation electronic media reading USB device, according to pre-set file security attribute, safe condition in the self-verifying internal memory and operation flag, the operation of satisfying safety requirements just allows to carry out;
B. encrypt the electronic media reading USB device of storage; The safe condition in checking internal memory, also need read in data/write fashionable, call the smart card function automatically and carry out corresponding data enciphering/deciphering operation; The mode that the enciphering/deciphering work of Large Volume Data all adopts PC software to combine with the KEY function, between the MassStorage of Microsoft function DLL and device drives, the DLL that adds one deck user oneself again, so that in concrete file manipulation command implementation, automatically call necessary KEY function (as password authentication etc.) by user DLL, operations such as data enciphering/deciphering that wherein relates to and file verification realize automatically at bottom;
C. at some to data security and the higher occasion of reliability requirement, can also adopt the mode of expansion specific command collection, all functions are all customized in advance; Have only by the specific command interface, obtain essential safety operation authority and just can carry out certain operation.
Compared with prior art, the present invention has advantages such as low, the erasable speed of operating voltage is fast, low in energy consumption, the life-span is long, cheap, control method is flexible, volume is little, a kind of brand-new reading notion is provided simultaneously and can be applied to multiple electric terminal.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a main hardware schematic diagram of the present invention;
Fig. 3 is a upper layer software (applications) process flow diagram of the present invention;
Fig. 4 is a bottom software process flow diagram of the present invention;
Fig. 5 is the special process flow diagram of accessing operation of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Shown in Fig. 1～5, the electronic media reading USB device, comprise master controller, USB KEY part, deposit and read part, described storage reader is visited mutually by master controller and PC, and is carried out authentication or carried out the enciphering/deciphering operation to depositing the electronic medium reading matter data of reading in the part by the safe operation of USB KEY part.
Be provided with the synchronous high-speed acquisition chip in the described master controller, be provided with smart card module in the described USB KEY part, described depositing reads to be provided with some NAND Flash sheets in the part, and this is deposited the capacity of reading part and is determined by employed NAND Flash size; Described synchronous high-speed acquisition chip is: have 32KB high density Flash program area, and read/writable protection, and can online MacromediaFlash deposit and read; Have the 5KBRAM district, wherein 256 bytes can be used for storehouse; External 12MHz crystal oscillator, inner phaselocked loop can produce 48MHz USB clock; The dual power supply management can be automaticallyed switch between usb bus power supply and powered battery; Programmable builtin voltage adjuster can adapt to the card of different voltage requests; 47 programmable I/O mouths; Support the 12Mbps full speed USB port of DMA; Mass storage interface (Mass Storage Interface) with DTC (Data Transfer Coprocessor), various memory devices be can support, Compact Flash, Multimedia Card, Secure Digital Card, SmartMedia Card, Sony Memory Stick, NAND Flash and ATA peripheral hardware etc. comprised; Support communication interfaces such as SPI and I2C; House dog and 2 16 bit timing devices with output function are arranged; Support smart card ISO/IEC78163 interface; Described USB KEY partly adopts HID (Human Interface Device, human interface device) agreement, and carries out data transmission by the full speed USB port; Described depositing read part employing BOT (Bulk Only Transport) Data Transport Protocol, and promptly this is deposited and reads partly to be Mass Storage equipment; The interface of described smart card module is by software simulation emulation ISO/IEC78163 interface, and the support of T=0 or T=1 agreement is realized by software; Described safe operation is according to the difference of security needs, comprise following mode: a. authentication mode: call the KEY function by general-purpose interface, keep relevant safe condition (comprising authentication result) and operation flag in the synchronous high-speed data acquisition internal memory, when calling Mass Storage function operation electronic media reading USB device, according to pre-set file security attribute, safe condition in the self-verifying internal memory and operation flag, the operation of satisfying safety requirements just allows to carry out; B. encrypt the electronic media reading USB device of storage; The safe condition in checking internal memory, also need read in data/write fashionable, call the smart card function automatically and carry out corresponding data enciphering/deciphering operation; The mode that the enciphering/deciphering work of Large Volume Data all adopts PC software to combine with the KEY function, between Mass Storage function DLL of Microsoft and device drives, the DLL that adds one deck user oneself again, so that in concrete file manipulation command implementation, automatically call necessary KEY function (as password authentication etc.) by user DLL, operations such as data enciphering/deciphering that wherein relates to and file verification realize automatically at bottom; C. at some to data security and the higher occasion of reliability requirement, can also adopt the mode of expansion specific command collection, all functions are all customized in advance; Have only by the specific command interface, obtain essential safety operation authority and just can carry out certain operation.
Electronic media reading USB device (abbreviation storage reader) is a kind of safe mobile electronic medium reading matter storer, even after power supply is closed, still can keep information, can wipe and programming again memory cell block, and not need extra program voltage.The electronic media reading USB utensil has advantages such as low, the erasable speed of operating voltage is fast, low in energy consumption, the life-span is long, cheap, control method is flexible, volume is little, and this storage reader provides a kind of brand-new reading notion and can be applied to multiple electric terminal simultaneously.
The security function of electronic media reading USB device is mainly realized by KEY.Therefore, for the system of different demands for security, can realize by selecting different KEY.For example, according to KEY to asymmetric arithmetics such as flow algorithm, RSA/ECC such as grouping such as DES/3DES algorithm, RC2/RC4/RC5, and the various combination supported of digest algorithm such as MD5/SHA1, can obtain the different level of securitys and the electronic media reading USB device of security strategy flexibly.
The electronic media reading USB device is that USB KEY and storage reader integration form.Its difference is that the file access system interface of electronic media reading USB device is not directly transparent to PC, but will control by KEY.Its structure as shown in Figure 1.
According to the difference of the controller of selecting, the controller of its master controller and KEY and storage reader can be independent separately, also may be integrated.
As can be seen from Figure 1, PC needs authentication or the operation of reading matter data enciphering/deciphering by KEY by the visit of master controller to storage reader, rather than directly storage.In this way, both can realize, also can realize the operation of high securities such as data encryption transmission, signature authentication and mandate deletion, thereby strengthen the security function of electronic media reading USB device by using storage reader after the authentication.
Electronic media reading USB device synchronous high-speed data acquisition chip has following characteristics:
32KB high density Flash program area, read/writable protection, and can realize that online MacromediaFlash deposits and read;
5KB RAM district, wherein 256 bytes can be used for storehouse;
External 12MHz crystal oscillator, inner phaselocked loop can produce 48MHz USB clock;
The dual power supply management can be automaticallyed switch between usb bus power supply and powered battery;
Programmable builtin voltage adjuster can adapt to the card of different voltage requests;
47 programmable I/O mouths;
Support the 12Mbps full speed USB interface of DMA;
Mass storage interface (Mass StorageInterface) with DTC (Data Transfer Coprocessor), various memory devices be can support, Compact Flash, Multimedia Card, SecureDigital Card, SmartMedia Card, Sony Memory Stick, NAND Flash and ATA peripheral hardware etc. comprised;
Support communication interfaces such as SPI and I2C;
House dog and 2 16 bit timing devices with output function are arranged;
Support smart card ISO/IEC78163 interface.
The principle of electronic media reading USB device:
From the characteristics of employing chip as can be seen, this is a chip that designs for electronic media reading USB device function specially, can be on identical hardware design basis, the different designs of the embedded software by controller chip realizes the security of electronic media reading USB device.
Hardware principle: if system does not have additional demand, adopt HID (Human Interface Device, human interface device) interface protocol, storage reader partly adopts BOT (Bulk OnlyTransport) agreement of Mass Storage equipment.Its main hardware principle as shown in Figure 2.
Wherein, storage reader is the Windows standard peripherals, and capacity is by the decision of employed NAND Flash size.
Intelligent card interface is by software simulation emulation ISO/IEC78163 interface, and the support of T=0 or T=1 agreement is realized by software.
Except that above-mentioned basic function, because storage reader synchronous high-speed data acquisition chip has abundant I/O interface resource, therefore for some the field of specific demand is arranged, also can increase real-time clock functional module, backup battery and charge management module thereof easily, and other SPI and I2C accommodation function module.
Software principle: be equivalent to insert simultaneously on the PC KEY and two equipment of storage reader, so its software flow is relatively independent to two-part operation.Wherein PC goes up software flow as shown in Figure 3.
The bottom software flow process of electronic media reading USB device as shown in Figure 4.
The function of electronic media reading USB device can be selected following several mode according to the difference of security needs:
1. call the KEY function by general-purpose interface, keep relevant safe condition (as authentication result etc.) and operation flag in the synchronous high-speed data acquisition chip internal memory.When calling Mass Storage function operation electronic media reading USB device, according to pre-set file security attribute, safe condition in the self-verifying internal memory and operation flag have only the operation of satisfying safety requirements just to allow to carry out.
2. the authentication in 1., also must encrypt store electrons medium reading USB device; The safe condition in checking internal memory, also need read in data/write fashionable, call the smart card function automatically and carry out corresponding data enciphering/deciphering operation.Since the communication speed of smart card and the limitation of execution speed, the mode that the enciphering/deciphering work of general Large Volume Data all adopts PC software to combine with the KEY function.Its software flow is similar to the base model software flow process among Fig. 3, just between Mass Storage function DLL of Microsoft and device drives, the DLL that adds one deck user oneself again, so that in concrete file manipulation command implementation, automatically call necessary KEY function (as password authentication etc.) by user DLL, to satisfy the needs of security.This layer operation is transparent to the user, need not user intervention, and therefore this mode is very practical.
Operations such as data enciphering/deciphering that wherein relates to and file verification realize automatically at bottom, to obtain higher security of system (because safe operation embed bottom can not shielding) and higher travelling speed (by the number of communications of minimizing PC and bottom).The difference of its bottom software flow process and basic model is to receive the command process component of BOT data, i.e. A part among Fig. 4.It carries out flow process as shown in Figure 5.
To data security and the higher occasion of reliability requirement, can also adopt the mode of expansion specific command collection at some, all functions are all customized in advance; Have only by the specific command interface, obtain essential safety operation authority and just can carry out certain operation.This mode can be carried out refinement with the condition and the attribute of various data manipulations, to obtain different effects.
The mode of electronic media reading USB device, can realize following security function easily:
Authentication and safety are read;
The electronic medium reading matter is encrypted storage and the protection of electronic medium reading matter security of system;
Electronic medium reading matter completeness check;
The visit of electronic medium reading matter and the data preparation of authorizing;
Electronic medium reading matter data realize the internet safe transmission by the function of KEY in the dish, guarantee privacy, integrality, reliability and the non-repudiation of electronic medium reading matter data.
Claims (7)
1. electronic media reading USB device, it is characterized in that, comprise master controller, USB KEY part, deposit and read part, described storage reader is visited mutually by master controller and PC, and is carried out authentication or carried out the enciphering/deciphering operation to depositing the electronic medium reading matter data of reading in the part by the safe operation of USB KEY part.
2. electronic media reading USB device according to claim 1, it is characterized in that, be provided with the synchronous high-speed acquisition chip in the described master controller, be provided with smart card module in the described USB KEY part, described depositing reads to be provided with some NAND Flash sheets in the part, and this is deposited the capacity of reading part and is determined by employed NAND Flash size.
3. electronic media reading USB device according to claim 2 is characterized in that, described synchronous high-speed acquisition chip is:
Have 32KB high density Flash program area, read/writable protection, and can online MacromediaFlash deposit and read;
Have 5KB RAM district, wherein 256 bytes can be used for storehouse;
External 12MHz crystal oscillator, inner phaselocked loop can produce 48MHz USB clock;
The dual power supply management can be automaticallyed switch between usb bus power supply and powered battery;
Programmable builtin voltage adjuster can adapt to the card of different voltage requests;
47 programmable I/O mouths;
Support the 12Mbps full speed USB port of DMA;
Mass storage interface (Mass StorageInterface) with DTC (Data Transfer Coprocessor), various memory devices be can support, Compact Flash, Multimedia Card, SecureDigital Card, SmartMedia Card, Sony Memory Stick, NAND Flash and ATA peripheral hardware etc. comprised;
Support communication interfaces such as SPI and 12C;
House dog and 2 16 bit timing devices with output function are arranged;
Support smart card ISO/IEC78163 interface.
4. electronic media reading USB device according to claim 3 is characterized in that, described USBKEY partly adopts HID (Human Interface Device, human interface device) agreement, and carries out data transmission by the full speed USB port.
5. electronic media reading USB device according to claim 3 is characterized in that, described depositing read part employing BOT (Bulk Only Transport) Data Transport Protocol, and promptly this is deposited and reads partly to be MassStorage equipment.
6. electronic media reading USB device according to claim 2 is characterized in that, the interface of described smart card module is by software simulation emulation ISO/IEC78163 interface, and the support of T=0 or T=1 agreement is realized by software.
7. electronic media reading USB device according to claim 1 is characterized in that, described safe operation comprises following mode according to the difference of security needs:
A. authentication mode: call the KEY function by general-purpose interface, keep relevant safe condition (comprising authentication result) and operation flag in the synchronous high-speed data acquisition internal memory, when calling Mass Storage function operation electronic media reading USB device, according to pre-set file security attribute, safe condition in the self-verifying internal memory and operation flag, the operation of satisfying safety requirements just allows to carry out;
B. encrypt the electronic media reading USB device of storage; The safe condition in checking internal memory, also need read in data/write fashionable, call the smart card function automatically and carry out corresponding data enciphering/deciphering operation; The mode that the enciphering/deciphering work of Large Volume Data all adopts PC software to combine with the KEY function, between the MassStorage of Microsoft function DLL and device drives, the DLL that adds one deck user oneself again, so that in concrete file manipulation command implementation, automatically call necessary KEY function (as password authentication etc.) by user DLL, operations such as data enciphering/deciphering that wherein relates to and file verification realize automatically at bottom;
C. at some to data security and the higher occasion of reliability requirement, can also adopt the mode of expansion specific command collection, all functions are all customized in advance; Have only by the specific command interface, obtain essential safety operation authority and just can carry out certain operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100296311A CN1912883A (en) | 2006-08-01 | 2006-08-01 | Electronic media reading USB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100296311A CN1912883A (en) | 2006-08-01 | 2006-08-01 | Electronic media reading USB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1912883A true CN1912883A (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100296311A Pending CN1912883A (en) | 2006-08-01 | 2006-08-01 | Electronic media reading USB |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872334A (en) * | 2010-05-26 | 2010-10-27 | 北京飞天诚信科技有限公司 | Compound type usb equipment and implementation method thereof |
| CN104378200A (en) * | 2014-11-19 | 2015-02-25 | 中城智慧科技有限公司 | Method for controlling validity period of secret key through clock |
-
2006
- 2006-08-01 CN CNA2006100296311A patent/CN1912883A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872334A (en) * | 2010-05-26 | 2010-10-27 | 北京飞天诚信科技有限公司 | Compound type usb equipment and implementation method thereof |
| CN104378200A (en) * | 2014-11-19 | 2015-02-25 | 中城智慧科技有限公司 | Method for controlling validity period of secret key through clock |
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Open date: 20070214 |