CN212411180U - Credible starting printer and printing system - Google Patents
Credible starting printer and printing system Download PDFInfo
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- CN212411180U CN212411180U CN202021182568.7U CN202021182568U CN212411180U CN 212411180 U CN212411180 U CN 212411180U CN 202021182568 U CN202021182568 U CN 202021182568U CN 212411180 U CN212411180 U CN 212411180U
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Abstract
Trusted boot printer and printing system, the printer includes: the data transmission interface is used for connecting data end equipment; the data transmission interface is connected with the data terminal equipment; a memory for storing data; the active measurement credibility root chip is used for actively measuring the credibility of the printer; the reset circuit is used for receiving the control of the active measurement trusted root chip so as to reset the master controller; the reset circuit is connected with the active measurement credible root chip; the main controller is used for processing the instructions sent by all the parts; the main controller is respectively connected with the data transmission interface, the memory and the reset circuit. The credibility of the printer main control board is judged by adopting an active measurement mode, the active measurement intervention time is earlier, the measurement range is larger, and the credibility is higher than that of passive measurement.
Description
Technical Field
The utility model belongs to the technical field of the printer, concretely relates to credible start-up printer and print system.
Background
The existing printer uses a passive measurement mode to perform credibility judgment on the printer, the passive measurement is to perform credibility judgment on a program after a boot program (boot) of an MCU (microprogrammed control unit), but when the judgment is not credible, the MCU is already in a boot state, and the printer is already in the boot state, which easily causes problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a credible start-up printer, include:
the data transmission interface is used for connecting data end equipment; the data transmission interface is connected with the data terminal equipment;
a memory for storing data;
the active measurement credibility root chip is used for actively measuring the credibility of the printer;
the reset circuit is used for receiving the control of the active measurement trusted root chip so as to reset the master controller; the reset circuit is connected with the active measurement credible root chip;
the main controller is used for processing the instructions sent by all the parts; the main controller is respectively connected with the data transmission interface, the memory and the reset circuit.
Preferably, the method further comprises the following steps: the data exchange interface is used for exchanging data between the data side equipment and the main controller; the data exchange interface is connected with the master controller.
The utility model also provides a credible start-up printing system, include:
a printer for printing;
the data terminal equipment is used for controlling the printer; the data terminal equipment is connected with the printer;
wherein the printer comprises a trusted boot printer as described in any of the above.
According to the credible starting printer and the printing system, the credibility of the main control board of the printer is judged in an active measurement mode, the active measurement intervention time is earlier, the measurement range is larger, the hardware control main controller prohibits the starting, and the credibility and the reliability are higher than those of passive measurement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a trusted boot printer according to the present invention;
FIG. 2 is a schematic diagram illustrating a connection of a trusted boot printing system according to the present invention; .
Fig. 3 is a schematic view of a usage flow of the trusted boot printer provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, in an embodiment of the present application, the present application provides a trusted boot printer, including:
the data transmission interface 1 is used for connecting data end equipment; the data transmission interface 1 is connected with the data terminal equipment;
a memory 2 for storing data;
the active measurement credibility root chip 3 is used for actively measuring the credibility of the printer;
the reset circuit 4 is used for receiving the control of the active measurement trusted root chip 3 to reset the master controller 5; the reset circuit 4 is connected with the active measurement trusted root chip 3;
the main controller 5 is used for processing instructions sent by all parts; the main controller 5 is connected to the data transmission interface 1, the memory 2, and the reset circuit 4, respectively.
As shown in fig. 3, when a trusted boot printer provided by the present application performs a trusted determination, the active measurement root-of-trust chip 3 starts first, and after starting, the active measurement root-of-trust chip 3 takes over the memory 2 (e.g., SPI FLASH) and measures the memory 2 with its built-in GM3 algorithm to determine whether it is trusted (i.e., not tampered with). If the trusted root chip is trusted, the active measurement trusted root chip 3 sends an instruction to the main controller 5, and the main controller 5 is reset through the reset circuit 5; meanwhile, the active measurement trusted root chip 3 releases the control right on the memory 2, so that the main controller 5 is normally powered on and started, and then the active measurement trusted root chip 3 is converted into a passive mode, can communicate with the main controller 5, and judges the trusted measurement of the online upgrading program in the memory 2 and the trusted measurement of the printing information.
As shown in fig. 1, in an embodiment of the present application, a trusted boot printer provided by the present application further includes: a data exchange interface 6, which is used for the data end equipment to exchange data with the main controller 5; the data exchange interface 6 is connected with the master controller 5.
In this embodiment of the application, the data transmission interface 1 includes an ethernet port, the data exchange interface 6 may be used for data side equipment to exchange data with the master controller 5, and the data exchange interface 6 includes a USB interface; the model of the active measurement root of trust chip 3 is Z32H330TC _ TCM.
As shown in fig. 2, in the embodiment of the present application, the utility model also provides a trusted boot printing system, including:
a printer 10 for printing;
a data terminal device 20 for controlling the printer 10; the data terminal equipment 20 is connected with the printer 10;
wherein the printer 10 comprises a trusted boot printer as described in fig. 1.
In the embodiment of the present application, the data side device 20 includes a PC.
According to the credible starting printer and the printing system, the credibility of the main control board of the printer is judged in an active measurement mode, the active measurement intervention time is earlier, the measurement range is larger, the hardware control main controller prohibits the starting, and the credibility and the reliability are higher than those of passive measurement.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (3)
1. A trusted boot printer, comprising:
the data transmission interface is used for connecting data end equipment; the data transmission interface is connected with the data terminal equipment;
a memory for storing data;
the active measurement credibility root chip is used for actively measuring the credibility of the printer;
the reset circuit is used for receiving the control of the active measurement trusted root chip so as to reset the master controller; the reset circuit is connected with the active measurement credible root chip;
the main controller is used for processing the instructions sent by all the parts; the main controller is respectively connected with the data transmission interface, the memory and the reset circuit.
2. The trusted boot printer of claim 1, further comprising: the data exchange interface is used for exchanging data between the data side equipment and the main controller; the data exchange interface is connected with the master controller.
3. A trusted boot printing system, comprising:
a printer for printing;
the data terminal equipment is used for controlling the printer; the data terminal equipment is connected with the printer;
wherein the printer comprises a trusted boot printer as claimed in any one of claims 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021182568.7U CN212411180U (en) | 2020-06-23 | 2020-06-23 | Credible starting printer and printing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021182568.7U CN212411180U (en) | 2020-06-23 | 2020-06-23 | Credible starting printer and printing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212411180U true CN212411180U (en) | 2021-01-26 |
Family
ID=74408138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021182568.7U Active CN212411180U (en) | 2020-06-23 | 2020-06-23 | Credible starting printer and printing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212411180U (en) |
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2020
- 2020-06-23 CN CN202021182568.7U patent/CN212411180U/en active Active
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