Printer interface outgoing data encryption system based on BLOWFISH encryption algorithm
A technology for outgoing data and encryption algorithm, applied in the direction of encryption device with shift register/memory, etc., to achieve the effects of convenient use, low cost, and easy technical implementation
Inactive Publication Date: 2014-05-28
5JUST DALIAN COMP SYST RES & DEV
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[0016] Such as figure 1 and figure 2 The system for encrypting data transmitted from the printer interface based on the BLOWFISH encryption algorithm as shown is characterized in that it includes the following steps:
[0017] 1) The data identification unit transmitted from the printer interface monitors in real time whether the computer central processing unit has issued an instruction to send out data;
[0018] 2) Once the data identification unit sent out from the printer interface finds that the computer central processing unit has issued an instruction to send data out, it sends a signal to notify the active unit;
[0019] 3) The main control unit automatically establishes a connection with the computer central processing unit, retrieves the data to be sent by the computer central processing unit, and then sends it to the BLOWFISH encryption unit for encryption processing;
[0020] 4) Finally, the main control unit feeds back the encrypted data to the computer central ...
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The invention discloses a printer interface outgoing data encryption system based on the BLOWFISH encryption algorithm. The encryption system is characterized in that the encryption comprises the following steps: 1) real-time monitoring is performed on the condition whether a computer central processing unit makes an instruction of sending data to the outside or not through a printer interface outgoing data identification unit; 2) once the printer interface outgoing data identification unit finds that the computer central processing unit makes the instruction of sending data to the outside, a signal is sent to notice a master control unit; 3) the master control unit establishes connection with the computer central processing unit automatically to obtain the data that the computer central processing unit is about to send and then send the data to a BLOWFISH encryption unit for encryption; 4) and finally, the encrypted data is fed back to the computer central processing unit by the master control unit for further being processed by the computer central processing unit. The system provided in the invention has advantages, such as convenient utilization, fast processing speed, easy technology implementation, etc.
Description
technical field [0001] The invention relates to a system for encrypting data transmitted from a printer interface based on a BLOWFISH encryption algorithm. Background technique [0002] With the general promotion of enterprise modernization, paperless office has been accepted by more and more enterprises because of its advantages such as high office efficiency, convenient file transfer, resource and cost saving. It is precisely because of its convenient file transfer that the risk of leaking corporate secrets is greatly increased. [0003] Especially for enterprises to encrypt the data transmitted by the printer interface, it is necessary for the office staff of the enterprise to set the printer and its corresponding computer for encryption settings in advance. Today, efficiency is the first priority, and it is required that every printer and every connected computer be encrypted. Encryption settings on a computer are almost impossible. Therefore, a system capable of encry...
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IPC IPC(8): H04L9/06
Inventor 孙凯歌
Owner 5JUST DALIAN COMP SYST RES & DEV