CN105760744A - Image inputting equipment and security detecting method thereof - Google Patents
Image inputting equipment and security detecting method thereof Download PDFInfo
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- CN105760744A CN105760744A CN201610081467.2A CN201610081467A CN105760744A CN 105760744 A CN105760744 A CN 105760744A CN 201610081467 A CN201610081467 A CN 201610081467A CN 105760744 A CN105760744 A CN 105760744A
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- image input
- input device
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- equipment
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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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/44—Program or device authentication
Abstract
The invention discloses image inputting equipment and a security detecting method thereof. The method includes the steps that a read only memory (ROM) of the image inputting equipment obtains an equipment certificate of the image inputting equipment; according to a preset root certificate and a preset verification algorithm, whether the equipment certificate is valid or not is determined through a mechanism public key; when the equipment certificate is valid, whether equipment firmware of the image inputting equipment is credible is determined; when the equipment firmware is credible, first communication with a host is established; the image inputting equipment generates a random number and detects the security of the random number and the security of a key function; second communication between the image inputting equipment and the host is established to receive an instruction from the host.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of image input device and safety verification method thereof.
Background technology
Along with the development of technology, increasing equipment realizes removableization.And image input device is owing to being often connected with computer, and transmit file, easily infect virus hiding in computer, thus revised the firmware of image input device by computer, infringement equipment or other system for computer of its connection are attacked by image input device.
Summary of the invention
The invention aims to provide a kind of safety detection being capable of image input device, to avoid method and image input device thereof that the computer system of its connection is attacked.
For achieving the above object, first aspect, the invention provides a kind of safety verification method of image input device, the method includes:
Image input device is connected with main frame to obtain power supply.
The ROM of image input device obtains the device certificate of image input device.
By authority public key, ROM determines that whether device certificate is effective according to the root certificate preset and verification algorithm.
When determining that device certificate is effective, according to device certificate, ROM determines that whether the equipment firmware of image input device is credible.
When determining that equipment firmware is credible, set up the first communication connection with main frame.
Image input device generates random number.
The safety of image input device detection random number and the safety of Key Functions.
Image input device is set up second communication with main frame and is connected, and receives the instruction from main frame.
Alternatively, before whether the equipment firmware determining image input device according to device certificate is credible, method also includes:
Obtain the parameter value of equipment firmware, wherein, determine that according to device certificate whether the equipment firmware of equipment is credible, including: the preset parameter value of parameter value with the equipment firmware carried in device certificate is mated.When parameter value matches with preset parameter value, it is determined that equipment firmware is credible.When parameter value does not mate with preset parameter value, it is determined that equipment firmware is insincere.
Alternatively, set up second communication at image input device with main frame and be connected, receive and also include from method after the instruction of main frame:
The USB device information of image input device self is sent to main frame, in order to USB information is compared by main frame with the USB information prestored.
Image input device receives the read write command sent when the information of the USB device read matches with the USB information prestored.
Alternatively, when matching with the USB information prestored when the information of the USB device read, then after image input device being sent read write command, method also includes:
Image input device reads the video-audio data of the memorizer of image input device.
The video-audio data read is packaged and delivered to main frame by image input device.
Image input device receives and parses through the video-audio data bag that main frame issues.
Image input device is by the video-audio data write after parsing to memorizer.
Alternatively, image input device includes scanner, facsimile machine, video camera or photographing unit.Second aspect, the present invention also provides for a kind of image input device, and this equipment includes main control chip, ROM, coffret, and wherein, main control chip is connected with main frame by coffret and obtains power supply.Main control chip obtains the device certificate of image input device by ROM, determine that whether device certificate is effective according to default root certificate and verification algorithm by authority public key, when determining that device certificate is effective, according to device certificate, ROM determines that whether the equipment firmware of image input device is credible.If main control chip determines that equipment firmware is credible, set up the first communication connection by coffret and main frame.Main control chip also generates random number, and detects the safety of random number and the safety of Key Functions, and main control chip is set up second communication also by coffret with main frame and is connected, and receives the instruction from main frame by coffret.
Alternatively, main control chip obtains the parameter value of equipment firmware also by ROM.The preset parameter value of parameter value with the equipment firmware carried in device certificate is also mated by main control chip, when parameter value matches with preset parameter value, it is determined that equipment firmware is credible, when parameter is not mated with preset parameter value, it is determined that equipment firmware is insincere.
Alternatively, the USB device information of image input device is sent to main frame by coffret by main control chip, is compared with the USB information prestored by USB information for main frame.
Main control chip also receives the read write command sent when the information of the USB device that main frame reads matches with the USB information prestored.
Alternatively, equipment also includes plug type storage card, and main control chip reads the video-audio data in plug type storage card in response to the read write command from main frame received, and is packed by the video-audio data read and is sent to main frame by coffret.
Main control chip receives and parses through, also by coffret, the video-audio data bag that main frame issues, and writes the video-audio data after resolving to plug type storage card.
Based on technique scheme, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
Accompanying drawing explanation
The indicative flowchart of the safety verification method of a kind of image input device that Fig. 1 provides for the embodiment of the present invention；
The indicative flowchart of the safety verification method of the another kind of image input device that Fig. 2 provides for the embodiment of the present invention；
The indicative flowchart of the safety verification method of the another kind of image input device that Fig. 3 provides for the embodiment of the present invention；
The indicative flowchart of the safety verification method of the another kind of image input device that Fig. 4 provides for the embodiment of the present invention；
The schematic diagram of a kind of image input device that Fig. 5 provides for the embodiment of the present invention；
The schematic diagram of the another kind of image input device that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
What the technical scheme and advantage for making the embodiment of the present invention was expressed becomes apparent from, and below by drawings and Examples, technical scheme is described in further detail.
The indicative flowchart of the safety verification method of a kind of image input device that Fig. 1 provides for the embodiment of the present invention, as it is shown in figure 1, the method can comprise the following steps.
Step 101, image input device is connected with main frame to obtain power supply.Such as, image input device is connected with main frame by interfaces such as USB, thus obtaining power supply from computer.
Step 102, the ROM of image input device obtains the device certificate of image input device.Such as, image input device passes through read-only memorizer (ROM, Read-OnlyMemory) device certificate is obtained, this device certificate is the public CA mechanism by responsible institution or trust and authorized organization thereof, or the certificate containing signature that equipment production firm signs and issues voluntarily, and containing the cryptographic Hash calculated for data with equipment firmware in device certificate.Image input device is also by ROM obtaining means PKI, and this authority public key is the foundation of calibration equipment certificate validity.
Step 103, by authority public key, ROM determines that whether device certificate is effective according to the root certificate preset and verification algorithm.Such as, ROM is by the effectiveness of preset root certificate and verification algorithm calibration equipment certificate.Again such as, mechanism of the manufacturer certificate that ROM is generated voluntarily by the mechanism's certificate comprising PKI, chip manufacturer, the effectiveness of calibration equipment certificate, including information such as the effective date of calibration equipment certificate, Expiration Date, digital signature, the cryptographic Hash signing and issuing the main control chip equipment firmware comprised in mechanism and certificate.
Step 104, when determining that device certificate is effective, according to device certificate, ROM determines that whether the equipment firmware of image input device is credible.Such as, when determining that device certificate is effective, the ROM cryptographic Hash according to digital digest algorithm computing equipment firmware, the cryptographic Hash of the equipment firmware calculated is compared with the equipment firmware cryptographic Hash of statement in device certificate, think during data consistent that equipment firmware is credible, otherwise it is assumed that equipment firmware is insincere.
Step 105, when determining that equipment firmware is credible, sets up the first communication connection with main frame.Such as, the basis that image input device sets up physics by USB interface with main frame is connected.Such as image input device resets, and receives the instruction enumerating USB device that main frame issues, and the situation (such as device type, protocol type etc.) etc. of main frame image input device informed by image input device.Such as, image input device is after enumeration operation terminates, can to descriptor information such as main frame returning equipment descriptor, configuration description, interface descriptor, endpoint descriptors, main frame, after knowing these descriptor information, can send poweron order to image input device equipment.
Step 106, image input device generates random number.Step 107, the safety of image input device detection random number and the safety of Key Functions.
Step 108, when random number safety and Key Functions are safe, image input device is set up second communication with main frame and is connected, and receives the instruction from main frame.
Alternatively, image input device includes the equipment such as scanner, facsimile machine, video camera or photographing unit.
The safety verification method of the image input device that the embodiment of the present invention provides, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
The indicative flowchart of the safety verification method of the another kind of image input device that Fig. 2 provides for the embodiment of the present invention, as shown in Figure 2, the method is except the step included by above-described embodiment, in step 104, when determining that device certificate is effective, according to device certificate, ROM determines that whether the equipment firmware of image input device is credible before, the method can also include the steps of.
Step 201, obtains the parameter value of equipment firmware.Such as, determine that according to device certificate whether the equipment firmware of equipment is credible, including: the preset parameter value of parameter value with the equipment firmware carried in device certificate is mated.When parameter value matches with preset parameter value, it is determined that equipment firmware is credible.When parameter value does not mate with preset parameter value, it is determined that equipment firmware is insincere.
The safety verification method of the image input device that the embodiment of the present invention provides, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
The indicative flowchart of the safety verification method of the another kind of image input device that Fig. 3 provides for the embodiment of the present invention, as shown in Figure 3, the method is except the step included by above-described embodiment, in step 112, image input device is set up second communication with main frame and is connected, receiving from after the instruction of main frame, the method may also include that
Step 301, the USB device information of self is sent to main frame by image input device, in order to USB information is compared by main frame with the USB information prestored.Such as, the descriptor information such as device type, protocol type, device descriptor, configuration description, interface descriptor, endpoint descriptor are sent to main frame by image input device, and main frame is compared with the information of pre-stored with self after obtaining these information.
Step 302, image input device receives the read write command sent when the information of the USB device read matches with the USB information prestored.Such as, after main frame receives the above-mentioned information that image input device sends, compare with the information of pre-stored with self, it is determined that the information received is consistent with the information of pre-stored, then sending read write command to image input device, image input device then receives this read write command.
The safety verification method of the image input device that the embodiment of the present invention provides, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
The indicative flowchart of the safety verification method of the another kind of image input device that Fig. 4 provides for the embodiment of the present invention, as shown in Figure 4, the method is except the step included by above-described embodiment, in step 302, after image input device receives the read write command sent when the information of the USB device read matches with the USB information prestored, the method may also include that
Step 401, image input device reads the video-audio data of the memorizer of image input device.Such as, the video-audio data in image input device reader memorizer (such as TF card, SD card etc.).
Step 402, the video-audio data read is packaged and delivered to main frame by image input device.Such as, the video-audio data packing that image input device will read, then send data packets to main frame.
Step 403, image input device receives and parses through the video-audio data bag that main frame issues.Such as, image input device receives the video-audio data bag from main frame.
Step 404, image input device is by the video-audio data write after parsing to memorizer.Such as, the video-audio data Packet analyzing from main frame that image input device will receive, then video-audio data is stored in image input device reader memorizer (such as TF card, SD card etc.).
The safety verification method of the image input device that the embodiment of the present invention provides, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
The schematic diagram of a kind of image input device that Fig. 5 provides for the embodiment of the present invention, as it is shown in figure 5, this equipment includes: main control chip 20, ROM30, coffret 10.
Wherein, main control chip 20 is connected with main frame by coffret 10 and obtains power supply.Such as, the main control chip 20 of image input device is connected with main frame by coffrets 20 such as USB, thus obtaining power supply from computer.
Main control chip 20 obtains the device certificate of image input device by ROM30, determine that whether device certificate is effective according to default root certificate and verification algorithm by authority public key, when determining that device certificate is effective, according to device certificate, ROM30 determines that whether the equipment firmware of image input device is credible.
Such as, the main control chip of image input device passes through read-only memorizer (ROM, Read-OnlyMemory) device certificate is obtained, this device certificate is the public CA mechanism by responsible institution or trust and authorized organization thereof, or the certificate containing signature that equipment production firm signs and issues voluntarily, and containing the cryptographic Hash calculated for data with equipment firmware in device certificate.Image input device is also by ROM obtaining means PKI, and this authority public key is the foundation of calibration equipment certificate validity.ROM is by the effectiveness of preset root certificate and verification algorithm calibration equipment certificate.Again such as, mechanism of the manufacturer certificate that ROM is generated voluntarily by the mechanism's certificate comprising PKI, chip manufacturer, the effectiveness of calibration equipment certificate, including information such as the effective date of calibration equipment certificate, Expiration Date, digital signature, the cryptographic Hash signing and issuing the main control chip equipment firmware comprised in mechanism and certificate.Such as, when determining that device certificate is effective, the ROM cryptographic Hash according to digital digest algorithm computing equipment firmware, the cryptographic Hash of the equipment firmware calculated is compared with the equipment firmware cryptographic Hash of statement in device certificate, think during data consistent that equipment firmware is credible, otherwise it is assumed that equipment firmware is insincere.
If main control chip 20 determines that equipment firmware is credible, set up the first communication connection by coffret 10 and main frame.Such as, the main control chip 20 that image input device passes through is set up the basic of physics by the coffrets such as USB 20 with main frame and is connected.Such as image input device resets, and receives the instruction enumerating USB device that main frame issues, and the situation (such as device type, protocol type etc.) etc. of main frame image input device informed by image input device.Such as, image input device is after enumeration operation terminates, can to descriptor information such as main frame returning equipment descriptor, configuration description, interface descriptor, endpoint descriptors, main frame, after knowing these descriptor information, can send poweron order to image input device equipment.
Main control chip 20 also generates random number, and detects the safety of random number and the safety of Key Functions.When random number safety and Key Functions are safe, main control chip 20 is set up second communication also by coffret 10 with main frame and is connected, and receive the instruction from main frame by coffret 10.
Alternatively, main control chip 20 obtains the parameter value of equipment firmware also by ROM30.The preset parameter value of parameter value with the equipment firmware carried in device certificate is also mated by main control chip 20, when parameter value matches with preset parameter value, it is determined that equipment firmware is credible, when parameter is not mated with preset parameter value, it is determined that equipment firmware is insincere.
Alternatively, the USB device information of image input device is sent to main frame by coffret 10 by main control chip 20, is compared with the USB information prestored by USB information for main frame.Such as, the descriptor information such as device type, protocol type, device descriptor, configuration description, interface descriptor, endpoint descriptor are sent to main frame by coffret 10 by the main control chip 20 of image input device, and main frame is compared with the information of pre-stored with self after obtaining these information.
Main control chip 20 also receives the read write command sent when the information of the USB device that main frame reads matches with the USB information prestored.Such as, after main frame receives the above-mentioned information that image input device sends, compare with the information of pre-stored with self, determine that the information of information and the pre-stored received is consistent, then sending read write command to image input device, the main control chip 20 of image input device receives this read write command by coffret 10.
The image input device that the embodiment of the present invention provides, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
The schematic diagram of a kind of image input device that Fig. 6 provides for the embodiment of the present invention, as shown in Figure 6, this equipment includes: main control chip 20, ROM30, coffret 10 and plug type storage card 40.
Main control chip 20 reads the video-audio data in plug type storage card 40 in response to the read write command from main frame received, and being packed by the video-audio data read and passing through coffret 10 is sent to main frame.
Main control chip 20 receives and parses through, also by coffret 10, the video-audio data bag that main frame issues, and writes the video-audio data after resolving to plug type storage card 40.
Wherein, main control chip 20 is connected with main frame by coffret 10 and obtains power supply.
Main control chip 20 obtains the device certificate of image input device by ROM30, determine that whether device certificate is effective according to default root certificate and verification algorithm by authority public key, when determining that device certificate is effective, according to device certificate, ROM30 determines that whether the equipment firmware of image input device is credible.
If main control chip 20 determines that equipment firmware is credible, set up the first communication connection by coffret 10 and main frame.
Main control chip 20 is set up second communication also by coffret 10 with main frame and is connected, and receives the instruction from main frame by coffret 10.
Alternatively, main control chip 20 obtains the parameter value of equipment firmware also by ROM30.The preset parameter value of parameter value with the equipment firmware carried in device certificate is also mated by main control chip 20, when parameter value matches with preset parameter value, it is determined that equipment firmware is credible, when parameter is not mated with preset parameter value, it is determined that equipment firmware is insincere.
Alternatively, the USB device information of image input device is sent to main frame by coffret 10 by main control chip 20, is compared with the USB information prestored by USB information for main frame.
Main control chip 20 also receives the read write command sent when the information of the USB device that main frame reads matches with the USB information prestored.
The image input device that the embodiment of the present invention provides, the effectiveness of the device certificate checking equipment by being preset in image input device, and by generating random number and monitoring its safety, and according to calculating mistake monitoring code monitoring storage content, the mode utilizing hash operations and encryption and decryption realizes the safety detection of image input device, to avoid the computer system of its connection is attacked.
It should be noted last that; above example is only in order to illustrate technical scheme and unrestricted; although the present invention being described in detail with reference to preferred embodiment; it is it should be understood that; the foregoing is only the specific embodiment of the present invention, the protection domain being not intended to limit the present invention, all within the spirit and principles in the present invention; any amendment of being made, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (9)
1. the safety verification method of an image input device, it is characterised in that including:
Described image input device is connected with main frame to obtain power supply；
The ROM of described image input device obtains the device certificate of described image input device；
By authority public key, described ROM determines that whether described device certificate is effective according to the root certificate preset and verification algorithm；
When determining that described device certificate is effective, according to described device certificate, described ROM determines that whether the equipment firmware of described image input device is credible；
When determining that described equipment firmware is credible, set up the first communication connection with main frame；
Described image input device generates random number；
Described image input device detects the safety of described random number and the safety of Key Functions；
Described image input device is set up second communication with described main frame and is connected, and receives the instruction from main frame.
2. method according to claim 1, it is characterised in that before whether the described equipment firmware determining described image input device according to described device certificate is credible, described method also includes:
Obtain the parameter value of described equipment firmware,
Wherein, described determine that whether the equipment firmware of described equipment is credible according to described device certificate, including:
The preset parameter value of described parameter value with the described equipment firmware carried in described device certificate is mated；
When described parameter value matches with described preset parameter value, it is determined that described equipment firmware is credible；
When described parameter value does not mate with described preset parameter value, it is determined that described equipment firmware is insincere.
3. method according to claim 1, it is characterised in that set up second communication at described image input device with described main frame and be connected, receives and also includes from described method after the instruction of main frame:
The USB device information of described image input device self is sent to described main frame, in order to described USB information is compared by described main frame with the USB information prestored；
Described image input device receives the read write command sent when the information of the described USB device read matches with the described USB information prestored.
4. method according to claim 3, it is characterised in that when the described information when the described USB device read matches with the described USB information prestored, then after described image input device being sent read write command, described method also includes:
Described image input device reads the video-audio data of the memorizer of described image input device；
The video-audio data read is packaged and delivered to described main frame by described image input device；
Described image input device receives and parses through the video-audio data bag that described main frame issues；
Described image input device is by the video-audio data write after parsing to described memorizer.
5. method according to any one of claim 1 to 4, it is characterised in that described image input device includes scanner, facsimile machine, video camera or photographing unit.
6. an image input device, it is characterised in that include main control chip, ROM, coffret, wherein,
Described main control chip is connected with main frame by described coffret and obtains power supply；
Described main control chip obtains the device certificate of described image input device by ROM, determine that whether described device certificate is effective according to default root certificate and verification algorithm by authority public key, when determining that described device certificate is effective, according to described device certificate, described ROM determines that whether the equipment firmware of described image input device is credible；
If described main control chip determines that described equipment firmware is credible, set up the first communication connection by described coffret and main frame；
Described main control chip also generates random number, and detects the safety of described random number and the safety of Key Functions, sets up second communication also by described coffret with described main frame and is connected, and receives the instruction from main frame by coffret.
7. equipment according to claim 6, it is characterised in that described main control chip obtains the parameter value of described equipment firmware also by ROM；
The preset parameter value of described parameter value with the described equipment firmware carried in described device certificate is also mated by described main control chip, when described parameter value matches with described preset parameter value, determine that described equipment firmware is credible, when described parameter is not mated with described preset parameter value, it is determined that described equipment firmware is insincere.
8. equipment according to claim 6, it is characterised in that the USB device information of described image input device is sent to described main frame by coffret by described main control chip, is compared with the USB information prestored by described USB information for described main frame；
Described main control chip also receives the read write command sent when the information of the described USB device that described main frame reads matches with the described USB information prestored.
9. equipment according to claim 8, it is characterised in that described equipment also includes plug type storage card,
Described main control chip reads the video-audio data in described plug type storage card in response to the read write command from described main frame received, and is packed by the video-audio data read and is sent to described main frame by described coffret；
Described main control chip receives and parses through, also by described coffret, the video-audio data bag that described main frame issues, and writes the video-audio data after resolving to described plug type storage card.
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| CN201610081467.2A CN105760744A (en) | 2016-02-04 | 2016-02-04 | Image inputting equipment and security detecting method thereof |
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| CN201610081467.2A CN105760744A (en) | 2016-02-04 | 2016-02-04 | Image inputting equipment and security detecting method thereof |
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