A POS and mobile terminal communication method, encryption method and device, and a POS

A mobile terminal communication and mobile terminal technology, applied in the field of encryption, can solve the problems of information leakage, low operation rate, restricted use, etc., and achieve the effects of less hardware resources, high uniqueness, and small amount of calculation.

Active Publication Date: 2017-05-17
FUJIAN LANDI COMML EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. In the existing wireless communication between financial POS and mobile terminals, information is sent in clear text, and there is a risk of information leakage;
[0007] 2. The efficiency of using DES encryption algorithm to encrypt the data stream transmitted by financial POS and mobile terminal is too low, the password life cycle is short, the calculation rate is low, the use is not flexible, and the use of mobile terminal scenarios is limited

Method used

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  • A POS and mobile terminal communication method, encryption method and device, and a POS
  • A POS and mobile terminal communication method, encryption method and device, and a POS
  • A POS and mobile terminal communication method, encryption method and device, and a POS

Examples

Experimental program
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Effect test

Embodiment 1

[0038] see figure 1 , the present embodiment is a kind of encryption method of financial POS and mobile terminal communication, comprises steps:

[0039] S1, the financial POS and the mobile terminal generate a common temporary key K master .

[0040] S2. The mobile terminal sends the Bluetooth address BD_ADDR to the financial POS, and the mobile terminal and the financial POS respectively send the temporary key K master Bring the Bluetooth address BD_ADDR of the mobile terminal into the key generation formula to generate the encryption key K cipher ;

[0041] S3. The financial POS or the mobile terminal performs an XOR operation on the plaintext data stream to be sent and the encryption key to generate encrypted transmission ciphertext.

[0042] In this embodiment, the temporary key K master and encryption key K cipher The length is 128 bits, so it greatly reduces the amount of calculation for key generation and the amount of calculation when using the encryption key to...

Embodiment 2

[0068] see figure 2 , the present invention also provides a kind of financial POS and mobile terminal communication method, the data of this communication transmission adopts above-mentioned encryption method to encrypt, after encrypting, also comprise steps:

[0069] S10. The financial POS or mobile terminal combines the plaintext data stream to be transmitted with the binary encryption key K cipher Perform XOR operation on the bit stream to obtain the encrypted transmission ciphertext, and send the encrypted transmission ciphertext;

[0070] S20, the mobile terminal or financial POS will receive the transmission ciphertext and the binary encryption key K cipher The bit stream is XORed to generate a plaintext data stream.

[0071] In this embodiment, the financial POS and mobile terminal communication method data encryption encryption key length is short, the algorithm is simple, and occupies less software and hardware resources, so it is especially suitable for financial ...

Embodiment 3

[0073] see image 3 , the present invention also provides an encryption device for communication between a financial POS and a mobile terminal, the encryption device includes a mobile terminal and a financial POS, and the financial POS includes a first temporary key K master Generating module 10, first encryption key K cipher Generating module 20 and first encryption module 30, described mobile terminal comprises the second temporary key K master r generation module 40, the second encryption key K cipher Generating module 50 and second encryption module 60;

[0074] The first ephemeral key K master Generation module 10 and second temporary key K master Generating module 40 is respectively used for financial POS and mobile terminal to generate common temporary key K master ;

[0075] The second encryption key K cipher The generating module 50 is used to send the bluetooth address BD_ADDR to the financial POS, and the temporary key K master Bring the Bluetooth address BD...

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Abstract

Disclosed is an encryption method for communication between a financial POS and a mobile terminal. The encryption method for communication comprises the steps: the financial POS and the mobile terminal generate a common temporary key Kmaster, the mobile terminal sends a Bluetooth address BD_ADDR to the financial POS, and the mobile terminal and the financial POS separately add the temporary key Kmaster and the Bluetooth address BD_ADDR of the mobile terminal into a key generation formula to generate an encryption key Kcipher; and the financial POS or the mobile terminal performs an exclusive OR operation on a plaintext data stream to be sent and the encryption key to generate an encrypted transmission ciphertext. The encryption method of the present invention enables data to be transmitted securely, provides a simple algorithm and occupies fewer software and hardware resources, thereby effectively ensuring a communication rate between the financial POS and the mobile terminal.

Description

technical field [0001] The invention relates to the encryption field, in particular to a financial POS and a mobile terminal communication method, a communication encryption method, a device and a financial POS. Background technique [0002] With the continuous development of online payment, it has become a trend to communicate between financial POS and mobile terminals to realize payment. Financial POS and mobile terminals can communicate through wired or wireless methods, where wired methods include USB interface data cables, audio data cables, etc.; wireless methods include WIFI, ibeacon Bluetooth, infrared and sound wave communications, etc. However, wired communication needs to be connected with various data lines, which is extremely inconvenient to use, so it is not accepted by people. However, wireless communication data is easily intercepted during transmission, which is not conducive to data confidentiality and security. Therefore, it is imperative to encrypt data ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04W12/04
CPCG06Q20/327G06Q20/3823H04L63/0435H04W12/50
Inventor 张炽成吴衍
Owner FUJIAN LANDI COMML EQUIP CO LTD
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