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A method for identifying multi-block encrypted cards

An identification method and encryption card technology, applied in the field of board card identification, can solve problems such as poor flexibility and increased cost, and achieve the effect of avoiding misoperation of the encryption card and having strong technical flexibility

Active Publication Date: 2020-10-09
TAIZHOU YUNYONG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution requires the addition of a TCA9555 chip, through which a one-to-one mapping relationship between each PCIE adapter card and each device is established, which not only increases the cost, but also pre-sets the level state, which has poor flexibility

Method used

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  • A method for identifying multi-block encrypted cards
  • A method for identifying multi-block encrypted cards
  • A method for identifying multi-block encrypted cards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-3 As shown, a method for identifying multiple encryption cards, the encryption card is determined and identified when the device is turned on, the encryption card is detected at the first time when the device is turned on, and the encryption card is operated, specifically Proceed as follows:

[0029] (1) Add a pull-up and pull-down judgment on the FPGA of the encryption card, the FPGA adopts the XC7Z015-1CLG485C chip, and the pull-up and pull-down judgment corresponds to the signal SDI_SEL. In a default state, the signal SDI_SEL is connected to a 22Ω resistor R2 to VCC, and at this time, the signal SDI_SEL is at a high level, with a value of 1. When the signal SDI_SEL is 1, the encryption card sets the value of the first register inside the FPGA to 1.

[0030] Use a jumper cap to short-circuit the 2P pin J1 of the encryption card that needs to be distinguished and identified, so that the signal SDI_SEL is connected to the 4.7K resistor R1 to GND; at ...

Embodiment 2

[0034] The difference from the first embodiment above is that, if Figure 4 As shown, the encryption card is determined and identified during the operation of the device, and the specific steps are as follows:

[0035] S1: By writing different values ​​to each encryption card in the internal second register, the device performs key storage operation and encryption on the encryption card by judging the value in the second register operation or decryption operation.

[0036] The specific method is:

[0037] The device automatically scans out all encryption cards in the device, and writes different values ​​to the second register of each encryption card by polling. For example, there are 3 encryption cards, and the first encryption card is written in sequence Write 001 into the second memory, write 002 into the second memory of the second encryption card, and write 003 into the second memory of the third encryption card. After different values ​​are written into the second reg...

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PUM

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Abstract

The invention discloses a method for identifying multiple encryption cards, which can accurately judge and identify the encryption cards when equipment is started or in the running process, and identify and distinguish the encryption cards through a pull-up and pull-down judgment signal on an FPGA (Field Programmable Gate Array) of the encryption cards. According to the invention, the encryption card can be accurately identified and distinguished when the equipment is started and in the operation process, and the problem of misoperation of the encryption card is avoided. Meanwhile, when the equipment is started, a judgment signal is changed into a low level through a technical mode of short-circuiting a jumper cap, so that the encryption card is identified and distinguished; in the runningprocess of the equipment, different values are written into each encryption card in the internal second register, so that the encryption cards are identified and distinguished, and the technical flexibility of the method is high.

Description

technical field [0001] The invention belongs to the technical field of card identification, in particular to an identification method for multiple encrypted cards. Background technique [0002] During the actual application of the encryption card, a key usually needs to be loaded and written into the storable area of ​​the encryption card externally. The performance of a single encryption card is limited. In practical applications, a single device often needs multiple encryption cards to meet high performance requirements. However, when a single device is equipped with multiple encryption cards, it is generally required that the key can only be stored in one of the encryption cards, and it has the function of destroying the key by pressing the key and opening the cover. , once the wrong encryption card is selected, the key will not be injected correctly or the injected key will be lost. Therefore, in the case where multiple encryption cards are configured in one device, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/72G06F21/77
CPCG06F21/72G06F21/77
Inventor 肖相生高渊刘杨李占才颜环宇赵丰
Owner TAIZHOU YUNYONG ELECTRONICS