CN104810036A - Optical disk data encryption and decryption U disk and implementation method - Google Patents
Optical disk data encryption and decryption U disk and implementation method Download PDFInfo
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- CN104810036A CN104810036A CN201510212903.0A CN201510212903A CN104810036A CN 104810036 A CN104810036 A CN 104810036A CN 201510212903 A CN201510212903 A CN 201510212903A CN 104810036 A CN104810036 A CN 104810036A
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00876—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
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Abstract
The invention relates to an optical disk data encryption and decryption U disk and implementation method. The method includes allowing a U disk password storing module to load passwords, then entering a waiting mode; allowing an external keyboard to input the optical disk data in a write and read mode, if selecting optical disk data writing, allowing a computer to write the data to be written into the U disk, allowing a U disk firmware encryption module to encrypt the data, and allowing the computer to read and transmit the encrypted data to a read and write optical disk drive device to write into the optical disk; if selecting optical disk data reading, allowing the computer to read the encrypted data from the optical disk in the optical disk drive device and write into the U disk for storage; when the computer reads the encrypted data from the U disk, allowing a U disk firmware decryption module to decrypt and transmit the encrypted data to the computer. By the aid of the method, the sensitive data information written in the optical disk can be prevented from leakage effectively, the safety of important data is guaranteed, cost is low, and the application range is wide.
Description
Technical field
The present invention relates to cdrom encryption field, particularly relate to a kind of USB flash disk for optical disc information encrypting and decrypting and implementation method.
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 is exactly want protection information resource from various types of threat, interference and destruction, i.e. the security of guarantee information.According to the definition of ISO (International Standards Organization), the implication of Information Security mainly refers to the integrality of information, 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 that can not be ignored.
CD be with optical information as storing the carrier of thing, be used for storing a kind of article of data.Divide not erasable optical disk, as CD-ROM, DVD-ROM etc.; And erasable optical disk, as CD-RW, DVD-RAM etc.CD is the equipment utilizing Principles of Laser to read and write, and is a kind of supplementary storage developed rapidly, can deposits the Multimedia digital information such as various word, sound, figure, image and animation.
In prior art, publication number CN102592634A's patent discloses a kind of pure software level encryption method preventing dvd video disc to be copied illegally.To be characterized in the CD-disc catalogs VIDEO_TS after encrypting except having the source of parents data VTS after encryption, also there is multiple DVD Play System can not call and the false VTS that can not be used for actual play, vob file size in false VTS is consistent with source of parents data VTS's, can reach the object misleading and extract software; And containing causing copying the optical media replication control routine of makeing mistakes in a large number in optical disk system, thus effectively prevent optical media replication and software from extracting encrypted content.This scheme adopts the mode of pure software to be encrypted, and level of security is lower, is very easily cracked.
And for example publication number be CN101499304 patent discloses a kind of CD and DVD CD encryption method preventing CD bootlegging.Its step first adopts software to the encryption of source of parents mathematical logic, then in stamper preparation process, carries out laser burn damage in specific position to stamper.Obtain encryption stamper corresponding CD-enciphering produced by compressing tablet by these 2 processes, thus reach the requirement effectively preventing optical media replication.This scheme complicated operation is unfavorable for processing, and cost is higher simultaneously.
Summary of the invention
For institute's produced problem in background technology, the invention provides a kind of USB flash disk for data of optical disk information encryption deciphering, effectively prevent the sensitive data information leakage be burnt on CD and go out, protect the safety of significant data.Be particularly suitable for government's document that is confidential and files department to back up and preserve; Simultaneously because this encrypted U disk and common rewritable CD drive constitute a set of cheap apparatus to data of optical disk enciphering/deciphering, be also adapted to very much vast enterprises and individuals user, protect Enterprise business confidential information and individual privacy, described USB flash disk comprises:
USB flash disk firmware encrypting/deciphering module, for completing the encrypting and decrypting to data of optical disk information;
Password memory module, for storing password;
Mode selection module, for receiving the data of optical disk read-write mode that user is inputted by external keyboard.
Preferably, described USB flash disk, by read-write CD drive, completes being carved into the data encryption of CD and reading the deciphering of data of optical disk according to the instruction of computing machine.
In above-mentioned either a program preferably, the data of optical disk transmission mode of described external keyboard input comprises data of optical disk inscription encryption mode and data of optical disk reading decryption mode.
In above-mentioned either a program preferably, described USB flash disk firmware encrypting/deciphering module comprises firmware encrypting unit and firmware decryption unit.
In above-mentioned either a program preferably, described ciphering unit is used for wait in computing machine that inscribing data is encrypted, and computing machine reads described enciphered data from USB flash disk and inscribes to CD.
In above-mentioned either a program preferably, the enciphered data that described decryption unit is used for reading into USB flash disk from CD in computing machine is decrypted.
In above-mentioned either a program preferably, the password stored in described password memory module is inputted by external keyboard by user, must input password during use, password correctly then USB flash disk enter standby mode.
In above-mentioned either a program preferably, described USB flash disk firmware encrypting/deciphering module, by being bundled by the password stored in cryptographic algorithm and described password memory module, realizes the encrypting and decrypting to data of optical disk.
Present invention also offers a kind of USB flash disk implementation method for data of optical disk information encryption deciphering, utilize the hardware logic of USB flash disk and software algorithm to realize the encryption and decryption of data of optical disk, said method comprising the steps of:
USB flash disk device inserts computing machine USB port, after power-on self-test initialization, detects in password memory module the password whether having user and inputted by external keyboard;
If described password memory module has password and correct judgment, then USB flash disk firmware encrypting/deciphering module completes password loading, otherwise circular wait user inputs password again;
Password loads successfully, then USB flash disk device enters standby mode, waits for that user is by external keyboard input data of optical disk read-write mode.
Preferably, described USB flash disk, by read-write CD drive, completes being carved into the data encryption of CD and reading the deciphering of data of optical disk according to the instruction of computing machine.
In above-mentioned either a program preferably, the data of optical disk read-write mode of described external keyboard input comprises data of optical disk inscription encryption mode and data of optical disk reading decryption mode.
In above-mentioned either a program preferably, described USB flash disk firmware encrypting/deciphering module comprises firmware encrypting unit and firmware decryption unit.
In above-mentioned either a program preferably, described data of optical disk inscription encryption mode execution step comprises:
User selects data of optical disk to inscribe encryption mode;
Computing machine will be waited to inscribe data write USB flash disk;
USB flash disk firmware encrypting unit is encrypted these data;
Computing machine reads this enciphered data from USB flash disk and inscribes to CD.
In above-mentioned either a program preferably, described data of optical disk reading decryption mode execution step comprises further:
User selects CD data reading decryption mode;
Computing machine reads cdrom encryption data;
Described enciphered data write USB flash disk is preserved by computing machine;
When computing machine reads this enciphered data from USB flash disk, this decrypt encrypted data is transferred to computing machine by USB flash disk firmware decryption unit.
In above-mentioned either a program preferably, the password stored in described password memory module is inputted by external keyboard by user, must input password during use, password correctly then USB flash disk enter standby mode.
In above-mentioned either a program preferably, described USB flash disk firmware encrypting/deciphering module, by being bundled by the password stored in cryptographic algorithm and described password memory module, realizes the encrypting and decrypting to data of optical disk.
The invention provides and effectively prevent the sensitive data information leakage be burnt on CD and go out, protect the safety of significant data, simultaneously with low cost applied widely.
Accompanying drawing explanation
Fig. 1 is the USB flash disk system architecture schematic diagram for data of optical disk information encryption deciphering shown in the present invention one exemplary embodiment.
Fig. 2 is according to the USB flash disk implementation method process flow diagram for data of optical disk information encryption deciphering shown in the present invention.
Embodiment
In conjunction with exemplary embodiment, the application is described with reference to the accompanying drawings.
Embodiment 1:
Present embodiment discloses a kind of USB flash disk for data of optical disk information encryption deciphering, rely on computer platform, described USB flash disk comprises:
USB flash disk firmware encrypting/deciphering module, for completing the encrypting and decrypting to data of optical disk information;
Password memory module, for storing password;
Mode selection module, for receiving the data of optical disk read-write mode that user is inputted by external keyboard.
Wherein, described USB flash disk, by read-write CD drive, completes being carved into the data encryption of CD and reading the deciphering of data of optical disk according to the instruction of computing machine.The data of optical disk transmission mode of described external keyboard input comprises data of optical disk and inscribes encryption mode and data of optical disk reading decryption mode.Described USB flash disk firmware encrypting/deciphering module comprises firmware encrypting unit and firmware decryption unit.Described ciphering unit is used for wait in computing machine that inscribing data is encrypted, and computing machine reads described enciphered data from USB flash disk and inscribes to CD.The enciphered data that described decryption unit is used for reading into USB flash disk from CD in computing machine is decrypted.The password stored in described password memory module is inputted by external keyboard by user, must input password during use, password correctly then USB flash disk enter standby mode.Described USB flash disk firmware encrypting/deciphering module, by being bundled by the password stored in cryptographic algorithm and described password memory module, realizes the encrypting and decrypting to data of optical disk.
Beneficial effect: the USB flash disk for data of optical disk information encryption deciphering that the present embodiment provides effectively prevent the sensitive data information leakage be burnt on CD and goes out, and protects the safety of significant data.Be particularly suitable for government's document that is confidential and files department to back up and preserve; Simultaneously because this encrypted U disk and common rewritable CD drive constitute a set of cheap apparatus to data of optical disk enciphering/deciphering, be also adapted to very much vast enterprises and individuals user, protect Enterprise business confidential information and individual privacy.
Embodiment 2:
As shown in Figure 1, be the USB flash disk system architecture schematic diagram for data of optical disk information encryption deciphering shown in the present invention one exemplary embodiment.This system mainly comprises three parts: the encryption of data of optical disk, computer platform and data of optical disk or decryption portion.Data of optical disk encryption or decryption portion are realized by special USB flash disk, computing machine is only responsible for the transmission of information as the transmission medium between data of optical disk and USB flash disk and is sent simple instruction, computing machine completes the reading of cdrom encryption data by read-write CD drive and inscribes enciphered data to CD, and USB flash disk device connects computing machine by USB interface.In the reading of data of optical disk and scribing process, data are all in encrypted state, the i.e. data of this reading of extraneous None-identified or inscription in whole transmission link, the data downloaded in computing machine cannot carry out checking of information equally if do not completed deciphering by hardware USB flash disk, such as in company's routine work, employee all from disc reading corresponding data, but can cannot not complete information reading by encrypted U disk for enciphered message.
When user reads the content of needs from data of optical disk, computer platform is read data of optical disk information by read-write CD drive, and described data are encrypted state; Computer platform completes the further reading of information by the USB flash disk equipment that USB interface connects, reading computer-chronograph writes in USB flash disk equipment by the enciphered message read from CD, firmware decryption unit in USB flash disk completes the deciphering of information and data decryption is sent to computing machine, user can read data decryption, completes corresponding function.
When user has data to need to inscribe to CD, computing machine will be waited to inscribe data write USB flash disk, and the data of said write are encrypted by USB flash disk firmware encrypting unit, and computing machine reads described enciphered data from USB flash disk and inscribes to CD.
Described USB flash disk device comprises interface control logic: according to usb bus standard, the hardware logic between adaptive USB flash disk and USB interface of computer; Data of optical disk read-write mode selects logic: receive and preserve the pattern from external keyboard input; Password reads in logic: receive and preserve the password from external keyboard input; MCU: the soft and hardware being responsible for USB flash disk controls; ROM firmware: the software program of encrypted U disk, it includes again usb communication module, encrypt and decrypt algoritic module, FLASH module for reading and writing, and password is arranged and correction verification module; RAM: the temporary storage location of software program operational data; FLASH: preserve CD-enciphering data, decrypting disc data that computer-readable is write; Password memory module: preserve and password is set, and verify the password that comparison inputs from external keyboard.
Beneficial effect: the USB flash disk for data of optical disk information encryption deciphering that the present embodiment provides effectively prevent the sensitive data information leakage be burnt on CD and goes out, and protects the safety of significant data.Be particularly suitable for government's document that is confidential and files department to back up and preserve; Simultaneously because this encrypted U disk and common rewritable CD drive constitute a set of cheap apparatus to data of optical disk enciphering/deciphering, be also adapted to very much vast enterprises and individuals user, protect Enterprise business confidential information and individual privacy.
Embodiment 3:
Present embodiments provide a kind of USB flash disk implementation method for data of optical disk information encryption deciphering, utilize the hardware logic of USB flash disk and software algorithm to realize the encryption and decryption of data of optical disk, said method comprising the steps of:
USB flash disk device inserts computing machine USB port, after power-on self-test initialization, detects in password memory module the password whether having user and inputted by external keyboard; If described password memory module has password and correct judgment, then USB flash disk firmware encrypting/deciphering module completes password loading, otherwise circular wait user inputs password again;
Password loads successfully, then USB flash disk device enters standby mode, waits for that user is by external keyboard input data of optical disk read-write mode.
Wherein, described USB flash disk, by read-write CD drive, completes being carved into the data encryption of CD and reading the deciphering of data of optical disk according to the instruction of computing machine.The data of optical disk read-write mode of described external keyboard input comprises data of optical disk and inscribes encryption mode and data of optical disk reading decryption mode.Described USB flash disk firmware encrypting/deciphering module comprises firmware encrypting unit and firmware decryption unit.Described data of optical disk is inscribed encryption mode execution step and is comprised: user selects data of optical disk to inscribe encryption mode; Computing machine will be waited to inscribe data write USB flash disk; USB flash disk firmware encrypting unit is encrypted these data; Computing machine reads this enciphered data from USB flash disk and inscribes to CD.Described data of optical disk reads decryption mode execution step and comprises further: user selects CD data reading decryption mode; Computing machine reads cdrom encryption data; Described enciphered data write USB flash disk is preserved by computing machine; When computing machine reads this enciphered data from USB flash disk, this decrypt encrypted data is transferred to computing machine by USB flash disk firmware decryption unit.
The password stored in described password memory module is inputted by external keyboard by user, must input password during use, password correctly then USB flash disk enter standby mode.Described USB flash disk firmware encrypting/deciphering module, by being bundled by the password stored in cryptographic algorithm and described password memory module, realizes the encrypting and decrypting to data of optical disk.
Beneficial effect: the USB flash disk for data of optical disk information encryption deciphering that the present embodiment provides effectively prevent the sensitive data information leakage be burnt on CD and goes out, and protects the safety of significant data.Be particularly suitable for government's document that is confidential and files department to back up and preserve; Simultaneously because this encrypted U disk and common rewritable CD drive constitute a set of cheap apparatus to data of optical disk enciphering/deciphering, be also adapted to very much vast enterprises and individuals user, protect Enterprise business confidential information and individual privacy.
Embodiment 4:
As shown in Figure 2, be the USB flash disk implementation method process flow diagram for data of optical disk information encryption deciphering shown in the present invention one exemplary embodiment.
As shown in the figure, this encrypted U disk device inserts computing machine USB port, after power-on self-test initialization, detect in password memory module the password whether being present in user and being inputted by external keyboard, if described password memory module is present in password and correct judgment, then USB flash disk firmware encrypting module completes password loading, otherwise circular wait user inputs password again.Complete password to load, USB flash disk device just enters the mode of operation to data of optical disk encryption and/or deciphering, waits for that user selects input data of optical disk to inscribe or readout mode by external keyboard.If select data of optical disk to inscribe, then computing machine is by data to be inscribed write USB flash disk, is encrypted these data by the encrypting module of USB flash disk firmware, and computing machine reads this enciphered data again and transfers to read-write CD drive to write CD; If select CD data reading, then computing machine reads the enciphered data in CD drive in CD and writes USB flash disk and preserves, and when computing machine reads this enciphered data from USB flash disk, then this decrypt encrypted data is passed to computing machine by the deciphering module of USB flash disk firmware.
Beneficial effect: the USB flash disk for data of optical disk information encryption deciphering that the present embodiment provides effectively prevent the sensitive data information leakage be burnt on CD and goes out, and protects the safety of significant data.Be particularly suitable for government's document that is confidential and files department to back up and preserve; Simultaneously because this encrypted U disk and common rewritable CD drive constitute a set of cheap apparatus to data of optical disk enciphering/deciphering, be also adapted to very much vast enterprises and individuals user, protect Enterprise business confidential information and individual privacy.
In order to understand the present invention better, in conjunction with specific embodiments the present invention to be explained in detail above.But, obviously can carry out different modification and remodeling to the present invention and not exceed the wider spirit and scope of the present invention that claim limits.Therefore, above embodiment has exemplary and hard-core implication.
Claims (10)
1., for a USB flash disk for data of optical disk information encryption deciphering, rely on computer platform, it is characterized in that, described USB flash disk comprises:
USB flash disk firmware encrypting/deciphering module, for completing the encrypting and decrypting to data of optical disk information;
Password memory module, for storing password;
Mode selection module, for receiving the data of optical disk read-write mode that user is inputted by external keyboard.
2. the USB flash disk for data of optical disk information encryption deciphering according to claim 1, is characterized in that, described USB flash disk, by read-write CD drive, completes being carved into the data encryption of CD and reading the deciphering of data of optical disk according to the instruction of computing machine.
3. the USB flash disk for data of optical disk information encryption deciphering according to claim 1, is characterized in that, the data of optical disk transmission mode of described external keyboard input comprises data of optical disk and inscribes encryption mode and data of optical disk reading decryption mode.
4. the USB flash disk for data of optical disk information encryption deciphering according to claim 3, it is characterized in that, described USB flash disk firmware encrypting/deciphering module comprises firmware encrypting unit and firmware decryption unit.
5. the USB flash disk for data of optical disk information encryption deciphering according to claim 4, is characterized in that, described ciphering unit is used for wait in computing machine that inscribing data is encrypted, and computing machine reads described enciphered data from USB flash disk and inscribes to CD.
6. the USB flash disk for data of optical disk information encryption deciphering according to claim 4, is characterized in that, the enciphered data that described decryption unit is used for reading into USB flash disk from CD in computing machine is decrypted.
7. according to claim 1 for data of optical disk information encryption deciphering USB flash disk, it is characterized in that, the password stored in described password memory module is inputted by external keyboard by user, must input password during use, password correctly then USB flash disk enter standby mode.
8. the USB flash disk for data of optical disk information encryption deciphering according to claim 1, it is characterized in that, described USB flash disk firmware encrypting/deciphering module, by being bundled by the password stored in cryptographic algorithm and described password memory module, realizes the encrypting and decrypting to data of optical disk.
9., for a USB flash disk implementation method for data of optical disk information encryption deciphering, utilize the hardware logic of USB flash disk and software algorithm to realize the encryption and decryption of data of optical disk, it is characterized in that, said method comprising the steps of:
USB flash disk device inserts computing machine USB port, after power-on self-test initialization, detects in password memory module the password whether having user and inputted by external keyboard;
If described password memory module has password and correct judgment, then USB flash disk firmware encrypting/deciphering module completes password loading, otherwise circular wait user inputs password again;
Password loads successfully, then USB flash disk device enters standby mode, waits for that user is by external keyboard input data of optical disk read-write mode.
10. the USB flash disk implementation method for data of optical disk information encryption deciphering according to claim 9, it is characterized in that, described USB flash disk, by read-write CD drive, completes being carved into the data encryption of CD and reading the deciphering of data of optical disk according to the instruction of computing machine.
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| CN201510212903.0A CN104810036A (en) | 2015-04-30 | 2015-04-30 | Optical disk data encryption and decryption U disk and implementation method |
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| CN201510212903.0A CN104810036A (en) | 2015-04-30 | 2015-04-30 | Optical disk data encryption and decryption U disk and implementation method |
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Cited By (1)
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Application publication date: 20150729 |