CN115879085A - Control method and control device for safe transmission of printing data - Google Patents
Control method and control device for safe transmission of printing data Download PDFInfo
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- CN115879085A CN115879085A CN202111136004.9A CN202111136004A CN115879085A CN 115879085 A CN115879085 A CN 115879085A CN 202111136004 A CN202111136004 A CN 202111136004A CN 115879085 A CN115879085 A CN 115879085A
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Abstract
The embodiment of the invention provides a control method and a control device for safe transmission of printing data, wherein the method comprises the following steps: the print driver transmits a print start request to the image forming apparatus; the print start request includes unique identification information of the host computer; the image forming apparatus generates a random key in accordance with the print start request; the image forming apparatus returns a random key to the host; the printing driver encrypts the printing data according to the random key and sends the encrypted printing data to the image forming device; the image forming apparatus decrypts the print data based on the random key. According to the embodiment of the invention, the printing data is encrypted by the printing driving program and then transmitted to the image forming device, so that the leakage of the printing data is prevented.
Description
[ technical field ] A
The present invention relates to an image forming method, and more particularly, to a control method, a control apparatus, and an electronic apparatus capable of realizing secure transmission of print data.
[ background of the invention ]
In the prior art, a host (such as a personal computer) issues a print job to a printer, and a print driver on the host does not perform secure encryption processing on print data of the print job, which easily causes leakage of the print data.
[ summary of the invention ]
The embodiment of the invention provides a control method and a control device for printing data safety transmission, which aim to solve the problem that printing data transmission in the background technology has no safety protection.
In one aspect, an embodiment of the present invention provides a method for controlling secure transmission of print data, including:
the print driver transmits a print start request to the image forming apparatus; the printing start request indicates that a host needs to start sending printing data for printing, and the printing start request comprises unique identification information of the host;
the image forming apparatus generates a random key in accordance with the print start request; the random key is generated according to the unique identification information of the host, the unique identification information of the image forming device and the current system time of the image forming device;
the image forming apparatus returns the random key to the host;
the printing driver encrypts the printing data according to the random key and sends the printing data to the image forming device;
the image forming apparatus decrypts the print data in accordance with the random key.
On the other hand, an embodiment of the present invention provides a control apparatus for secure transmission of print data, including:
a transmission unit configured to transmit a print start request to the image forming apparatus; the printing start request indicates that a host needs to start sending printing data for printing, and the printing start request comprises unique identification information of the host;
a receiving unit configured to receive a random key fed back by the image forming apparatus; wherein the image forming apparatus generates the random key with the unique identification information of the host, the unique identification information of the image forming apparatus, and the current system time of the image forming apparatus according to the print start request;
the printing data generating unit encrypts the printing data according to the random key;
the transmitting unit transmits the encrypted print data to the image forming apparatus so that the image forming apparatus decrypts the print data based on the random key and outputs the decrypted print data.
An embodiment of the present invention further provides an electronic device, including: comprising a memory, a processor and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of the above.
An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is configured to implement the steps of any one of the methods described above when executed.
According to the embodiment of the invention, the printing data is encrypted by the printing driving program and then transmitted to the image forming device, so that the leakage of the printing data is prevented, and the safe transmission of the printing data and the safe confidentiality of the printing operation are ensured.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a diagram illustrating an exemplary system to which a control method for secure transmission of print data according to an embodiment of the present application is applied;
fig. 2 is a schematic flowchart of a control method for secure transmission of print data according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of a control apparatus for secure transmission of print data according to a second embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An image forming apparatus in an embodiment of the present invention is a device having at least one function related to image formation, which may include, but is not limited to: a print function, a scan function, a copy function, and a fax function. For example:
a single function printer: an image forming apparatus with only a printing function.
A multifunctional printer: the image forming apparatus with printing, copying, scanning and/or facsimile functions can also selectively set the number of paper cassettes.
The digital compound machine: based on the copying function, the laser printer has standard or optional printing, scanning and facsimile functions, adopts digital code principle, and laser printing mode to output file, and may be used in editing image and text as required.
The following exemplifies a scenario in which the control method for secure transmission of print data provided in the embodiment of the present application is applied. As shown in fig. 1, the system example diagram is applicable to the control method for secure transmission of print data according to the embodiment of the present application, and includes: a first electronic device 110 and an image forming device 120; the first electronic device 110 and the image forming device 120 have data communication therebetween. The image forming apparatus 120 may include, but is not limited to, the following devices: a single function printer, a multifunction printer, a complex machine, etc.
The first electronic device may be an electronic device installed with a print driver, such as a computer, or an electronic device capable of communicating with a printer, such as a mobile phone or a mobile tablet, and may also be generally referred to as a user end, a client end, or a host.
The connection mode between the first electronic device 110 and the image forming device 120 is not limited in the embodiment of the present application. In one possible implementation, the first electronic device 110 and the image forming device 120 may be connected through a local area network; in another possible implementation, the image forming device 120 may be connected to the first electronic device 110 through a USB cable; in another possible implementation manner, the image forming apparatus 120 may be connected to the first electronic apparatus 110 by a wireless method, such as bluetooth or Wi-Fi Direct.
In the embodiment of the present invention, the print job may be transmitted by the first electronic device 110 to the image forming device 120 to perform the printout. Generally, a print driver of the image forming apparatus 120 is installed in the first electronic device 110, so that an application program on the first electronic device 110 issues print data to the image forming apparatus 120.
First embodiment
The embodiment of the invention provides a control method for safe transmission of printing data, which ensures the safe transmission of the printing data.
As shown in fig. 2, a method for controlling secure transmission of print data includes:
step S201, the print driver transmits a print start request to the image forming apparatus; the printing start request indicates that the host needs to start sending printing data for printing, and the printing start request comprises unique identification information of the host;
step S202, the image forming device generates a random key according to the printing start request, and the image forming device returns the random key to the host; the random key is generated according to the unique identification information of the host, the unique identification information of the image forming device and the system time of the current image forming device;
step S203, the printing driver encrypts the printing data according to the random key and sends the printing data to the image forming device;
in step S204, the image forming apparatus decrypts the print data based on the random key.
By the embodiment of the invention, before the printing data is sent to the image forming device, the printing data can be encrypted according to the host information and the information generation key of the image forming device, so that the safe transmission of the printing data is protected.
The control method of the embodiment of the present invention further includes:
when the image forming apparatus cannot decrypt the received print data, a warning page is output. Optionally, the random key is also invalidated.
If the decryption of the printing data fails, the printing data which is encrypted by a fake key and then transmitted to the image forming device may exist, so that the image forming device cannot decrypt the printing data, and the printing warning page can remind a user of the reason of the decryption failure.
Alternatively, when the image forming apparatus cannot decrypt the received print data, the number of times of decryption failure is recorded, and when the number of times of recording reaches n times, locking the image forming apparatus cannot perform any operation. When the number of times of decryption failure reaches a predetermined value, for example, 3 times, there may be a problem that the current image forming apparatus faces an illegal user to perform illegal printing, and thus the image forming apparatus may be locked, and optionally, the image forming apparatus may be locked for a different predetermined time according to the number of times of decryption failure to protect the safe operation of the image forming apparatus.
Specifically, the generation of the random key depends on the MAC address of the image forming apparatus, the MAC address of the host, and the system time of the image forming apparatus. One random key corresponds to one image forming apparatus and one host. The unique identification information of the host includes, but is not limited to, a MAC address, an IP address, a host name, and a host serial number of the host; the unique identification information of the image forming apparatus includes, but is not limited to, a MAC address, an IP address, a device name, and a factory serial number of the image forming apparatus.
Alternatively, the random key is disposable, and the random key is invalidated after the image forming apparatus normally completes decryption of the print data. The printing data is safe and effective, and the condition that the secret key is still used for printing by an illegal user after being leaked is prevented. Alternatively, the random key may be invalidated after the image forming apparatus normally completes parsing of the print data or after the output printing.
The embodiment of the invention has the following technical effects:
1. the encryption and decryption keys of each print job are different, namely the encryption and decryption keys represent that the data of the same printed document are different every time the same printed document is printed;
2. the decryption failure times are limited, so that other people are effectively prevented from deciphering the encryption and decryption process by using an exhaustion method;
3. one secret key corresponds to one encryption and decryption process, and printing cannot be executed even if the secret key is acquired by other people.
In addition, when the print driver needs to transmit different print jobs, a corresponding random key is acquired to the image forming apparatus for each print job to encrypt each print job. The random key for each print job is not the same. And when different hosts issue print jobs to the image forming apparatus, the different hosts also obtain corresponding random keys from the image forming apparatus to encrypt each print job before issuing the print jobs. The image forming apparatus selects a corresponding random key for decryption according to different print jobs.
When different hosts send different print jobs, the image forming device selects a corresponding key according to the information of the hosts to decrypt the print jobs; when the same host computer issues different printing jobs, the image forming device sets a linked list according to the printing start request, the linked list stores the corresponding relation between the random key and the printing jobs, and when the same host computer issues different printing jobs, the image forming device obtains the corresponding random key according to the linked list to decrypt the corresponding printing jobs to obtain printing data; after the print job is decrypted, whether the decryption is failed or successful, the key corresponding to the print job in the linked list is invalid, and the corresponding information of the print job and the random key is deleted.
Second embodiment
An embodiment of the present invention provides a control device for secure transmission of print data, as shown in fig. 3, the control device 30 includes: a transmitting unit 31, a receiving unit 32, and a print data generating unit 33.
A transmission unit 31 for transmitting a print start request to the image forming apparatus; the printing start request indicates that the host needs to start sending printing data for printing, and the printing start request comprises unique identification information of the host;
a receiving unit 32 for receiving a random key fed back by the image forming apparatus; the image forming device generates a random key according to a printing start request by using the unique identification information of the host computer, the unique identification information of the image forming device and the system time of the current image forming device;
the print data generation unit 33 encrypts the print data based on the random key.
The transmitting unit transmits the encrypted print data to the image forming apparatus so that the image forming apparatus decrypts the print data based on the random key and outputs the decrypted print data.
According to the embodiment of the invention, before the printing driver sends the printing job, the information of the image forming device and the information of the host are acquired to encrypt the printing data, so that the safe transmission of the printing data is ensured.
Alternatively, the image forming apparatus outputs a warning page when the print data cannot be decrypted. So that the user knows the reason for the inability to decrypt.
Alternatively, the random key is invalidated after the image forming apparatus completes decryption of the print data. The key can be used only once, preventing the key from being reused to cause arbitrary output of print data.
Descriptions of the embodiments of the present invention are not repeated where they are the same as the above-described embodiments.
In addition, an embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the monitoring method described above.
Further, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the program is configured to implement the steps of the monitoring method when executed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A control method for printing data secure transmission is characterized by comprising the following steps:
the print driver transmits a print start request to the image forming apparatus; the printing start request indicates that a host needs to start sending printing data for printing, and the printing start request comprises unique identification information of the host;
the image forming apparatus generates a random key according to the print start request; the random key is generated according to the unique identification information of the host, the unique identification information of the image forming device and the current system time of the image forming device;
the image forming apparatus returns the random key to the host;
the printing driver encrypts the printing data according to the random key and sends the printing data to the image forming device;
the image forming apparatus decrypts the print data in accordance with the random key.
2. The control method according to claim 1, wherein a warning page is output when the image forming apparatus cannot decrypt the received print data.
3. The control method according to claim 1, characterized by further comprising:
when the image forming apparatus cannot decrypt the received print data, the number of times of decryption failure is recorded, and when the number of times of recording reaches n times, the image forming apparatus is locked and cannot perform a printing operation.
4. The control method according to claim 1, characterized by further comprising:
and after the image forming device normally finishes the decryption of the printing data, the random key is invalid.
5. A control apparatus for secure transmission of print data, comprising:
a transmission unit configured to transmit a print start request to the image forming apparatus; the printing start request indicates that a host needs to start sending printing data for printing, and the printing start request comprises unique identification information of the host;
a receiving unit configured to receive a random key fed back by the image forming apparatus; wherein the image forming apparatus generates the random key with the unique identification information of the host, the unique identification information of the image forming apparatus, and the current system time of the image forming apparatus according to the print start request;
the printing data generating unit encrypts the printing data according to the random key;
the transmitting unit transmits the encrypted print data to the image forming apparatus so that the image forming apparatus decrypts the print data based on the random key and outputs the decrypted print data.
6. The control device according to claim 5, characterized by further comprising:
the image forming apparatus outputs a warning page when the print data cannot be decrypted.
7. The control device according to claim 5, characterized by further comprising:
the random key is invalidated after the image forming apparatus completes decryption of the print data.
8. An electronic device comprising a memory, a processor and a computer program; wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-4.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed, carries out the steps of the method of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136004.9A CN115879085A (en) | 2021-09-27 | 2021-09-27 | Control method and control device for safe transmission of printing data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136004.9A CN115879085A (en) | 2021-09-27 | 2021-09-27 | Control method and control device for safe transmission of printing data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115879085A true CN115879085A (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111136004.9A Pending CN115879085A (en) | 2021-09-27 | 2021-09-27 | Control method and control device for safe transmission of printing data |
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| Country | Link |
|---|---|
| CN (1) | CN115879085A (en) |
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- 2021-09-27 CN CN202111136004.9A patent/CN115879085A/en active Pending
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